Paper | Title | Other Keywords | Page |
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MOAL01 | Maturity of the MAX IV Laboratory in Operation and Phase II Development | controls, experiment, detector, data-acquisition | 1 |
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MAX~IV Laboratory, the first 4th generation synchrotron located in the south of Sweden, entered operation in 2017 with the first three experimental stations. In the past two years the project organisation has been focused on phase II of the MAX IV Laboratory development, aiming to raise the number of beamlines in operation to 16. The KITS group, responsible for the control and computing systems of the entire laboratory, was a major actor in the realisation of this phase as well as in the continuous up-keep of the user operation. The challenge consisted principally of establishing a clear project management plan for the support groups, including KITS, to handle this high load in an efficient and focused way, meanwhile gaining the experience of operating a 4th generation light source. The momentum gained was impacted by the last extensive shutdown due to the pandemic and shifted toward the remote user experiment, taking advantage of web technologies. This article focuses on how KITS has handled this growing phase in term of technology and organisation, to finally describe the new perspective for the MAX IV Laboratory, which will face a bright future. | |||
Slides MOAL01 [79.837 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOAL01 | ||
About • | Received ※ 10 October 2021 Revised ※ 22 November 2021 Accepted ※ 13 December 2021 Issue date ※ 22 December 2021 | ||
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MOAL03 | From SKA to SKAO: Early Progress in the SKAO Construction | software, TANGO, controls, real-time | 14 |
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The Square Kilometre Array telescopes have recently started their construction phase, after years of pre-construction effort. The new SKA Observatory (SKAO) intergovernmental organisation has been created, and the start of construction (T0) has already happened. In this talk, we summarise the construction progress in our facility, and the role that agile software development and open-source collaboration, and in particular the development of our TANGO-based control system, is playing. | |||
Slides MOAL03 [17.847 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOAL03 | ||
About • | Received ※ 15 October 2021 Accepted ※ 04 November 2021 Issue date ※ 11 February 2022 | ||
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MOAR01 | Modernizing the SNS Control System | controls, EPICS, hardware, software | 21 |
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The Spallation Neutron Source at Oak Ridge National Laboratory has been operating since 2006. An upgrade to double the machine power from 1.4 MW to 2.8 MW is currently underway and a project to add a second target station is in the preliminary design phase. While each project will add the controls needed for their specific scope, the existing control system hardware, software, and infrastructure require upgrades to maintain high availability and ensure the system will meet facility requirements into the future. While some systems have received new hardware due to obsolescence, much of the system is original apart from some maintenance and technology refresh. Software will also become obsolete and must be upgraded for sustainability. Further, requirements for system capacity can be expected to increase as more subsystems upgrade to smarter devices capable of higher data rates. This paper covers planned improvements to the integrated control system with a focus on reliability, sustainability, and future capability. | |||
Slides MOAR01 [3.215 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOAR01 | ||
About • | Received ※ 11 October 2021 Accepted ※ 03 November 2021 Issue date ※ 18 November 2021 | ||
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MOBL02 | Real-Time Framework for ITER Control Systems | controls, real-time, plasma, framework | 45 |
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The ITER Real-Time Framework (RTF) is a middleware providing common services and capabilities to build real-time control applications in ITER such as the Plasma Control System (PCS) and plasma diagnostics. The RTF dynamically constructs applications at runtime from the configuration. The principal building blocks that compose an application process are called Function Blocks (FB), which follow a modular structure pattern. The application configuration defines the information that can influence control behavior, such as the connections among FBs, their corresponding parameters, and event handlers. The consecutive pipeline process in a busy-waiting mode and a data-driven pattern minimizes jitter and hardens the deterministic system behavior. In contrast, infrastructural capabilities are managed differently in the service layer using non-real-time threads. The deployment configuration covers the final placement of a program instance and thread allocation to the appropriate computing infrastructure. In this paper, we will introduce the architecture and design patterns of the framework as well as the real-life examples used to benchmark the RTF. | |||
Slides MOBL02 [3.192 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOBL02 | ||
About • | Received ※ 10 October 2021 Accepted ※ 11 November 2021 Issue date ※ 24 January 2022 | ||
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MOBL03 | Machine Learning Platform: Deploying and Managing Models in the CERN Control System | controls, network, experiment, embedded | 50 |
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Recent advances make machine learning (ML) a powerful tool to cope with the inherent complexity of accelerators, the large number of degrees of freedom and continuously drifting machine characteristics. A diverse set of ML ecosystems, frameworks and tools are already being used at CERN for a variety of use cases such as optimization, anomaly detection and forecasting. We have adopted a unified approach to model storage, versioning and deployment which accommodates this diversity, and we apply software engineering best practices to achieve the reproducibility needed in the mission-critical context of particle accelerator controls. This paper describes CERN Machine Learning Platform - our central platform for storing, versioning and deploying ML models in the CERN Control Center. We present a unified solution which allows users to create, update and deploy models with minimal effort, without constraining their workflow or restricting their choice of tools. It also provides tooling to automate seamless model updates as the machine characteristics evolve. Moreover, the system allows model developers to focus on domain-specific development by abstracting infrastructural concerns. | |||
Slides MOBL03 [0.687 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOBL03 | ||
About • | Received ※ 07 October 2021 Accepted ※ 16 November 2021 Issue date ※ 07 February 2022 | ||
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MOBL04 | Karabo Data Logging: InfluxDB Backend and Grafana UI | FEL, controls, GUI, database | 56 |
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The photon beam lines and instruments at the European XFEL (EuXFEL) are operated using the Karabo* control system that has been developed in house since 2011. Monitoring and incident analysis requires quick access to historic values of control data. While Karabo’s original custom-built text-file-based data logging system suits well for small systems, a time series data base offers in general a faster data access, as well as advanced data filtering, aggregation and reduction options. EuXFEL has chosen InfluxDB** as backend that is operated since summer 2020. Historic data can be displayed as before via the Karabo GUI or now also via the powerful Grafana*** web interface. The latter is e.g. used heavily in the new Data Operation Center of the EuXFEL. This contribution describes the InfluxDB setup, its transparent integration into Karabo and the experiences gained since it is in operation.
* Steffen Hauf et al., J. Synchrotron Rad. (2019). 26, 1448-1461 ** https://docs.influxdata.com/influxdb/ *** https://grafana.com/grafana/ |
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Slides MOBL04 [3.204 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOBL04 | ||
About • | Received ※ 13 October 2021 Accepted ※ 16 November 2021 Issue date ※ 06 January 2022 | ||
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MOPV006 | The New Small Wheel Low Voltage Power Supply DCS for the ATLAS Experiment | controls, detector, experiment, radiation | 111 |
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The present ATLAS Small Wheel detector will be replaced with the New Small Wheel(NSW) which is expected to be installed in the ATLAS underground cavern by the end of the LS2. Due to its complexity and long-term operation, NSW requires the development of a sophisticated Detector Control System. The use of such a system is necessary to allow the detector to function consistently as a seamless interface to all sub-detectors and the technical infrastructure of the experiment. The central system handles the transition between the possible operating states while ensuring monitoring and archiving of the system’s parameters. The part that will be described is the modular system of Low Voltage. The new LV Intermediate Control Station will be used to power all the boards of the NSW and through them providing readout and trigger data while functioning safely. Among its core features are remote control, split of radiation sensitive parts from parts that can be housed in a hostile area and compatibility with operation under radiation and magnetic field as in the ATLAS cavern. | |||
Poster MOPV006 [4.251 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV006 | ||
About • | Received ※ 10 October 2021 Revised ※ 18 October 2021 Accepted ※ 21 December 2021 Issue date ※ 24 December 2021 | ||
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MOPV009 | The HV DCS System for the New Small Wheel Upgrade of the ATLAS Experiment | detector, controls, hardware, status | 115 |
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The ATLAS muon spectrometer will exceed its design capabilities in the high background radiation as expected during the upcoming runs and at HL-LHC. In order to cope with the foreseen limitations, it was decided to replace the SW with a New SW (NSW) system, by combining two prototype detectors, the sTGC & and resistive Micromegas. Both technologies are ’aligned’ to the ATLAS general baselines for the NSW upgrade project, maintaining in such way the excellent performance of the muon system beyond Run-3. Complementary to the R&D of these detectors, an intuitive control system was of vital importance. The Micromegas DCS (MMG HV) and the sTGC DCS (STG HV) for the NSW have been developed, following closely the existing look, feel and command architecture of the other Muon sub-systems. The principal task of the DCS is to enable the coherent and safe operation of the detector by continuously monitoring its operational parameters and its overall state. Both technologies will be installed in ATLAS and will be readout and monitored through the common infrastructure. Aim of this work is the description of the development and implementation of a DCS for the HV system of both technologies.
This paper has been submitted on behalf of the ATLAS Muon Collaboration |
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Poster MOPV009 [7.747 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV009 | ||
About • | Received ※ 10 October 2021 Accepted ※ 16 December 2021 Issue date ※ 22 December 2021 | ||
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MOPV011 | The Inclusion of White Rabbit into the Global Industry Standard IEEE 1588 | network, hardware, framework, electron | 126 |
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White Rabbit (WR) is the first CERN-born technology that has been incorporated into a global industry standard governed by the Institute of Electrical and Electronics Engineers (IEEE), the IEEE 1588 Precision Time Protocol (PTP). This showcase of technology transfer has been beneficial to both the standard and to WR technology. For the standard, it has allowed the PTP synchronisation performance to be increased by several orders of magnitude, opening new markets and opportunities for PTP implementers. While for WR technology, the review during its standardisation and its adoption by industry makes it future-proof and drives down prices of the WR hardware that is widely used in scientific installations. This article provides an insight into the 7-year-long WR standardisation process, describing its motivation, benefits, costs and the final result. After a short introduction to WR, it describes the process of reviewing, generalising and translating it into an IEEE standard. Finally, it retrospectively evaluates this process in terms of efforts and benefits to conclude that basing new technologies on standards and extending them bears short-term costs that bring long-term benefits. | |||
Poster MOPV011 [1.283 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV011 | ||
About • | Received ※ 08 October 2021 Accepted ※ 03 November 2021 Issue date ※ 15 February 2022 | ||
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MOPV014 | Upgrade of the NewSUBARU Control System | controls, linac, storage-ring, PLC | 143 |
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NewSUBARU has constructed a new dedicated injector in order to separate the operation from SPring-8 and to operate independently. In designing this injector, we tried to share the same components as those of the Tohoku Synchrotron Radiation Facility, which will be completed in 2023, in order to make effective use of human resources. The control system of the injector and the existing storage ring must be constructed as unified system, so the file server, DB server, backbone network, etc. were redesigned using the control system used in SPring-8/SACLA as a control framework. MTCA.4 was used to control the injector, and EtherCAT was used to communicate with the PLC. For the control of the storage ring, the existing equipment configuration was retained and the control framework was migrated. In this paper, we report the details of the NewSUBARU control system. | |||
Poster MOPV014 [1.048 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV014 | ||
About • | Received ※ 08 October 2021 Revised ※ 17 October 2021 Accepted ※ 24 January 2022 Issue date ※ 28 February 2022 | ||
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MOPV015 | Control System of the SRILAC Project at RIBF | controls, EPICS, power-supply, PLC | 147 |
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At RIKEN Nishina Center, the SRILAC project has been launched for the search experiments of super-heavy-elements with atomic numbers of 119 and higher. The main points of the SRILAC project are as follows. Superconducting RIKEN Linear Accelerator (SRILAC) was newly installed at downstream of existing accelerator (RIKEN Linear Accelerator: RILAC) to enhance beam energy. Additionally, a new RIKEN 28-GHz superconducting electron cyclotron resonance ion source has been implemented at the frontend of SRILAC to increase beam intensity. With that, the SRILAC control system requires corrections and upgrades to the shortcomings of previous RILAC control system, for example control methods for electromagnet power supplies, an machine protection system and an archive system. Moreover, there was also a issue to be solved for methods of integration with small LabVIEW-based systems. To operate efficiently in the SRILAC project, a distributed control system utilizing EPICS should be adopted as in RIBF, a higher-level application protocol needs to be integrated to EPICS Channel Access protocol. In this conference, we report the system implementation, developed tool in detail about SRILAC project. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV015 | ||
About • | Received ※ 13 October 2021 Revised ※ 22 October 2021 Accepted ※ 25 February 2022 Issue date ※ 05 March 2022 | ||
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MOPV017 | CERN SCADA Systems 2020 Large Upgrade Campaign Retrospective | SCADA, controls, software, interface | 156 |
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In this paper we report the experience from a large-scale upgrade campaign of SCADA control systems performed during the second LHC Long Shutdown at CERN. Such periodical upgrades are dictated by the ever evolving SCADA WinCC OA system and the CERN frameworks evolution used in those control systems. These upgrades concern: accelerator control systems, e.g. quench protection system, powering interlocks, magnet alignment; control systems devoted to accelerator facilities such as cryogenics, vacuum, gas… and other global technical infrastructure systems as well as the CERN electrical distribution system. Since there are more than 200 SCADA projects covering the CERN accelerator complex and technical infrastructure, any disruption requires careful coordination, planning and execution with process owners. Having gained experience from previous campaigns and reaching a new level of automation we were able to make visible improvements by shortening the required time and reducing the personnel required. Activities, lessons learned and further improvements are presented as well as a comprehensive statistical insight of the whole campaign. | |||
Poster MOPV017 [4.222 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV017 | ||
About • | Received ※ 09 October 2021 Revised ※ 14 October 2021 Accepted ※ 04 November 2021 Issue date ※ 18 November 2021 | ||
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MOPV021 | Upgrading the National Ignition Facility’s (NIF) Integrated Computer Control System to Support Optical Thompson Scattering (OTS) Diagnostic | controls, laser, database, alignment | 173 |
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Funding: This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. With the ability to deliver 2.1 MJ of 500 TW ultraviolet laser light to a target, the National Ignition Facility (NIF) is the world’s most energetic laser. This combination of energy and power allows the study of materials under conditions similar to the center of the sun. On fusion ignition experiments, plasma generated in the interior of the target shell can detrimentally impact the implosion symmetry and the resulting energy output. We are in the final stages of commissioning a significant new diagnostic system that will allow us to better understand the plasma conditions and improve our symmetry control techniques. This Optical Thompson Scattering (OTS) system consists of two major components: a probe laser beamline capable of delivering a world first 1 J of energy at 211 nm, and a diagnostic that both reflects the probe laser into the target and collects the scattered photons. Between these two components, the control system enhancements required integration of over 450 components into the existing automation suite. This talk will provide an overview of the system upgrade approach and the tools used to efficiently manage and test changes to both our data and software. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV021 | ||
About • | Received ※ 09 October 2021 Accepted ※ 10 February 2022 Issue date ※ 21 February 2022 | ||
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MOPV030 | Application of EPICS Software in Linear Accelerator | software, interface, rfq, controls | 193 |
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The institute of modern physics (IMP) has two sets of linear accelerator facilities, they are CAFe (China ADS front-end demo linac) and LEAF (Low Energy Accelerator Facility). The Main equipment of LEAF facility consists of ion source, LEBT (Low Energy Beam Transport), RFQ (Radio Frequency Quadrupole) and some experiment terminals. Compare with LEAF, CAFe equipment has more and adds MEBT (Middle Energy Beam Transport) and four sets of superconducting cavity strings at the back end of RFQ. In the process of commissioning and running linac equipment, The EPICS Archiver application and Alarm system are used. According to the refined control requirements of the facility sites, we have completed the software upgrade and deployment of the archiver and alarm systems. The upgraded software systems have made the operation of linac machines more effective in term of monitoring, fault-diagnostic and system recovery, and becomes more user-friendly as well. | |||
Poster MOPV030 [0.692 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV030 | ||
About • | Received ※ 09 October 2021 Revised ※ 20 November 2021 Accepted ※ 24 February 2022 Issue date ※ 16 March 2022 | ||
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MOPV036 | Porting Control System Software From Python 2 to 3 - Challenges and Lessons | software, controls, factory, MMI | 217 |
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Obsolescence is one of the challenges facing all long-term projects. It not only affects hardware platforms, but also software. Python 2.x reached official End Of Life status on 1 January 2020. In this paper we review our efforts to port to the replacement, Python 3.x. While the two versions are very similar, there are important differences which can lead to incompatibility or changes in behaviour. We discuss our motivation and strategy for porting our code base of approximately 200 k source lines of code over 20 Python packages. This includes aspects such as internal and external dependencies, legacy and proprietary software that cannot be easily ported, testing and verification, and why we selected a phased approach rather than "big bang". We also report on the challenges and lessons learnt - notably why good test coverage is so important for software maintenance. Our application is the 64-antenna MeerKAT radio telescope in South Africa - a precursor to the Square Kilometre Array | |||
Poster MOPV036 [2.277 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV036 | ||
About • | Received ※ 11 October 2021 Accepted ※ 04 February 2022 Issue date ※ 03 March 2022 | ||
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MOPV039 | UCAP: A Framework for Accelerator Controls Data Processing @ CERN | controls, experiment, framework, software | 230 |
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The Unified Controls Acquisition and Processing (UCAP) framework provides a means to facilitate and streamline data processing in the CERN Accelerator Control System. UCAP’s generic structure is capable of tackling classic "Acquisition - Transformation - Publishing/Presentation" use cases, ranging from simple aggregations to complex machine reports and pre-processing of software interlock conditions. In addition to enabling end-users to develop data transformations in Java or Python and maximising integration with other controls sub-systems, UCAP puts an emphasis on offering self-service capabilities for deployment, operation and monitoring. This ensures that accelerator operators and equipment experts can focus on developing domain-specific transformation algorithms, without having to pay attention to typical IT tasks, such as process management and system monitoring. UCAP is already used by Linac4, PSB and SPS operations and will be used by most CERN accelerators, including LHC by the end of 2021. This contribution presents the UCAP framework and gives an insight into how we have productively combined modern agile development with conservative technical choices. | |||
Poster MOPV039 [7.998 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV039 | ||
About • | Received ※ 09 October 2021 Accepted ※ 04 November 2021 Issue date ※ 20 December 2021 | ||
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MOPV040 | Introducing Python as a Supported Language for Accelerator Controls at CERN | controls, software, network, GUI | 236 |
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In 2019, Python was adopted as an officially supported language for interacting with CERN’s accelerator controls. In practice, this change of status was as much pragmatic as it was progressive - Python has been available as part of the underlying operating system for over a decade and unofficial Python interfaces to controls have existed since at least 2015. So one might ask: what really changed when Python’s adoption became official? This paper will discuss what it takes to officially support Python in a controls environment and will focus on the cultural and technological shifts involved in running Python operationally. It will highlight some of the infrastructure that has been put in place at CERN to facilitate a stable and user-friendly Python platform, as well as some of the key decisions that have led to Python thriving in CERN’s accelerator controls domain. Given its general nature, it is hoped that the approach presented in this paper can serve as a reference for other scientific organisations from a broad range of fields who are considering the adoption of Python in an operational context. | |||
Poster MOPV040 [2.133 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV040 | ||
About • | Received ※ 09 October 2021 Revised ※ 15 October 2021 Accepted ※ 04 November 2021 Issue date ※ 12 January 2022 | ||
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MOPV043 | CERN Controls Configuration Service - Event-Based Processing of Controls Changes | controls, database, hardware, software | 253 |
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The Controls Configuration Service (CCS) is a core component of the data-driven Control System at CERN. Built around a central database, the CCS provides a range of client APIs and graphical user interfaces (GUI) to enable efficient and user-friendly configuration of Controls. As the entry point for all the modifications to Controls system configurations, the CCS provides the means to ensure global data coherency and propagation of changes across the distributed Controls sub-systems and services. With the aim of achieving global data coherency in the most efficient manner, the need for an advanced data integrator emerged. The Controls Configuration Data Lifecycle manager (CCDL) is the core integration bridge between the distributed Controls sub-systems. It aims to ensure consistent, reliable, and efficient exchange of information and triggering of workflow actions based on events representing Controls configuration changes. The CCDL implements and incorporates cutting-edge technologies used successfully in the IT industry. This paper describes the CCDL architecture, design and technology choices made, as well as the tangible benefits that have been realised since its introduction. | |||
Poster MOPV043 [2.770 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-MOPV043 | ||
About • | Received ※ 09 October 2021 Revised ※ 20 October 2021 Accepted ※ 21 December 2021 Issue date ※ 23 February 2022 | ||
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TUAR01 | Upgrade of the CMS ECAL Detector Control System During the CERN Large Hadron Collider Long Shutdown II | controls, software, detector, framework | 297 |
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As part of the Compact Muon Solenoid (CMS) experiment, the Electromagnetic Calorimeter (ECAL) Detector Control System (DCS) is undergoing a large software and hardware upgrade during the second long shutdown (LS2) of the CERN Large Hadron Collider (LHC). The DCS software running under the WinCC Open Architecture (OA) platform, required fundamental changes in the architecture as well as several other upgrades on the hardware side. The extension of the current long shutdown (2019-2021) is offering a unique opportunity to perform more updates, improve the detector safety and robustness during operations and achieve new control features with an increased modularity of the software architecture. Starting from the main activities of the ECAL DCS upgrade plan, we present the updated agenda for the LS2. This covers several aspects such as the different software migrations of the DCS, the consolidation of toolkits as well as some other improvements preceding the major ECAL upgrade foreseen for the next long shutdown (2025-2026). | |||
Slides TUAR01 [1.966 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUAR01 | ||
About • | Received ※ 10 October 2021 Revised ※ 20 October 2021 Accepted ※ 30 November 2021 Issue date ※ 22 December 2021 | ||
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TUBL01 | Distributed Caching at Cloud Scale with Apache Ignite for the C2MON Framework | distributed, database, controls, software | 307 |
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The CERN Control and Monitoring platform (C2MON) is an open-source platform for industrial controls data acquisition, monitoring, control and data publishing. Its high availability, fault tolerance and redundancy make it a perfect fit to handle the complex and critical systems present at CERN. C2MON must cope with the ever-increasing flows of data produced by the CERN technical infrastructure, such as cooling and ventilation or electrical distribution alarms, while maintaining integrity and availability. Distributed caching is a common technique to dramatically increase the availability and fault tolerance of redundant systems. For C2MON we have replaced the existing legacy Terracotta caching framework with Apache Ignite. Ignite is an enterprise grade, distributed caching platform, with advanced cloud-native capabilities. It enables C2MON to handle high volumes of data with full transaction support and makes C2MON ready to run in the cloud. This article first explains the challenges we met when integrating Apache Ignite into the C2MON framework, and then demonstrates how Ignite enhances the capabilities of a monitor and control system in an industrial controls environment. | |||
Slides TUBL01 [0.817 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUBL01 | ||
About • | Received ※ 07 October 2021 Revised ※ 20 October 2021 Accepted ※ 01 March 2022 Issue date ※ 05 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUBL04 | CI-CD Practices at SKA | TANGO, software, controls, framework | 322 |
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The Square Kilometre Array (SKA) is an international effort to build two radio interferometers in South Africa and Australia forming one Observatory monitored and controlled from global headquarters (GHQ) based in the United Kingdom at Jodrell Bank. SKA is highly focused on adopting CI/CD practices for its software development. CI/CD stands for Continuous Integration \& Delivery and/or Deployment. Continuous Integration is the practice of merging all developers’ local copies into the mainline frequently. Continuous Delivery is the approach of developing software in short cycles ensuring it can be released anytime, and Continuous Deployment is the approach of delivering the software into operational use frequently and automatically. This paper analyses the decisions taken by the Systems Team (a specialized agile team devoted to developing and maintaining the tools that allow continuous practices) to promote the CI/CD practices with the TANGO-controls framework. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUBL04 | ||
About • | Received ※ 07 October 2021 Accepted ※ 05 December 2021 Issue date ※ 01 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUBL05 | Pysmlib: A Python Finite State Machine Library for EPICS | EPICS, controls, interface, software | 330 |
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In the field of Experimental Physics and Industrial Control Systems (EPICS)*, the traditional tool to implement high level procedures is the Sequencer*. While this is a mature, fast, and well-proven software, it comes with some drawbacks. For example, it’s based on a custom C-like programming language which may be unfamiliar to new users and it often results in complex, hard to read code. This paper presents pysmlib, a free and open source Python library developed as a simpler alternative to the EPICS Sequencer. The library exposes a simple interface to develop event-driven Finite State Machines (FSM), where the inputs are connected to Channel Access Process Variables (PV) thanks to the PyEpics** integration. Other features include parallel FSM with multi-threading support and input sharing, timers, and an integrated watchdog logic. The library offers a lower barrier to enter and greater extensibility thanks to the large ecosystem of scientific and engineering python libraries, making it a perfect fit for modern control system requirements. Pysmlib has been deployed in multiple projects at INFN Legnaro National Laboratories (LNL), proving its robustness and flexibility.
* L. R. Dalesio, M. R. Kraimer, and A. J. Kozubal. "EPICS architecture." ICALEPCS. Vol. 91. 1991. ** M. Newville, et al., pyepics/pyepics Zenodo. http://doi.org/10.5281/zenodo.592027 |
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Slides TUBL05 [1.705 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUBL05 | ||
About • | Received ※ 08 October 2021 Revised ※ 22 October 2021 Accepted ※ 22 December 2021 Issue date ※ 10 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV001 | The Mirror Systems Benches Kinematics Development for Sirius/LNLS | controls, interface, alignment, MMI | 358 |
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Funding: Ministry of Science, Technology and Innovation (MCTI) At Sirius, many of the optical elements such as mirror systems, monochromators, sample holders and detectors are attached to the ground with high stiffnesses to reduce disturbances at the beam during experiments. Granite benches were developed to couple the optical device to the floor and allow automatic movements, via com-manded setpoints on EPICS that runs an embedded kinematics, during base installation, alignment, commis-sioning and operation of the beamline. They are com-posed by stages and each application has its own geome-try, a set number of Degrees-of-Freedom (DoF) and mo-tors, all controlled by Omron Delta Tau Power Brick LV. In particular, the mirror system was the precursor motion control system for other benches. Since the me-chanical design aims on stiffness, the axes of mirror are not controlled directly, the actuators are along the granite bench. A geometric model was created to simplify the mirror operation, which turn the actuators motion trans-parent to the user and allow him to directly control the mirror axes. |
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Poster TUPV001 [1.229 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV001 | ||
About • | Received ※ 10 October 2021 Revised ※ 18 October 2021 Accepted ※ 20 November 2021 Issue date ※ 22 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV002 | Motion Control Improvements for the Kirkpatrick-Baez Mirror System for Sirius/LNLS EMA Beamline | controls, interface, feedback, EPICS | 362 |
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Funding: Ministry of Science, Technology and Innovation (MCTI) The Kirkpatrick-Baez (KB) mirror system is composed of a vertical focusing mirror (VFM) and a horizontal fo-cusing mirror. Both concave mirrors focus the X-ray beam by reflecting it at small grazing angles. The relocation of this system from UVX XDS beamline to Sirius EMA beamline facilitated a full revision of the motion control system, whose controller was migrated to Omron Delta Tau Power Brick LV. The beam focus is controlled by bending the mirrors through camshaft mechanisms cou-pled to low current Faulhaber motors. Although the am-plifier is designed for higher currents, controller settings allowed the use of lower currents. Another improvement made is the ability to drive both bender motors in gantry mode and still control the lag between them. Each bender has a capacitive sensor to monitor the position of the center of the mirror, which is read by the analog input of the controller and made available by EPICS [1]. The VFM is supported by a tripod and a new kinematics was devel-oped to reference the center of the mirror as the point of control. This paper presents the implementation of the new motion control KB system and its results at Sirius EMA beamline. |
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Poster TUPV002 [1.167 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV002 | ||
About • | Received ※ 09 October 2021 Revised ※ 18 October 2021 Accepted ※ 20 November 2021 Issue date ※ 30 November 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV003 | The Control System of the Four-Bounce Crystal Monochromators for SIRIUS/LNLS Beamlines | controls, feedback, synchrotron, alignment | 365 |
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Funding: Ministry of Science, Technology, and Innovation (MCTI) CARNAÚBA (Coherent X-ray Nanoprobe) and CATERETÊ (Coherent and Time Resolved Scattering) are the longest beamlines in Sirius - the 4th generation light source at the Brazilian Synchrotron Light Laboratory (LNLS). They comprise Four-Bounce Crystal Monochromators (4CM) for energy selection with strict stability and performance requirements. The motion control architecture implemented for this class of instruments was based on Omron Delta Tau Power Brick LV, controller with PWM amplifier. The 4CM was in-house designed and consists of two channel-cut silicon crystals whose angular position is given by two direct-drive actuators. A linear actuator mounted between the crystals moves a diagnostic device and a mask used to obstruct spurious diffractions and reflections. The system is assembled in an ultra-high vacuum (UHV) chamber onto a motorized granite bench that permits the alignment and the operation with pink-beam. This work details the motion control approach for axes coordination and depicts how the implemented methods led to the achievement of the desired stability, considering the impact of current control, in addition to benchmarking with manufacturer solution. |
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Poster TUPV003 [1.477 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV003 | ||
About • | Received ※ 10 October 2021 Revised ※ 20 October 2021 Accepted ※ 21 December 2021 Issue date ※ 30 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV004 | The FPGA-Based Control Architecture, EPICS Interface and Advanced Operational Modes of the High-Dynamic Double-Crystal Monochromator for Sirius/LNLS | controls, undulator, FPGA, EPICS | 370 |
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Funding: Ministry of Science, Technology and Innovation (MCTI) The High-Dynamic Double-Crystal Monochromator (HD-DCM) has been developed since 2015 at Sirius/LNLS with an innovative high-bandwidth mechatronic architecture to reach the unprecedented target of 10 nrad RMS (1 Hz - 2.5 kHz) in crystals parallelism also during energy fly-scans. After the initial work in Speedgoat’s xPC rapid prototyping platform, for beamline operation the instrument controller was deployed to NI’s CompactRIO (cRIO), as a rugged platform combining FPGA and real-time capabilities. Customized libraries needed to be developed in LabVIEW and a heavily FPGA-based control architecture was required to finally reach a 20 kHz control loop rate. This work summarizes the final control architecture of the HD-DCM, highlighting the main hardware and software challenges; describes its integration with the EPICS control system and user interfaces; and discusses its integration with an undulator source. *Geraldes, R. R., et al. "The status of the new High-Dynamic DCM for Sirius." Proc. MEDSI 2018 (2018). |
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Poster TUPV004 [2.549 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV004 | ||
About • | Received ※ 13 October 2021 Accepted ※ 20 November 2021 Issue date ※ 27 November 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV012 | Automated Device Error Handling in Control Applications | controls, EPICS, framework, interface | 408 |
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When integrating devices into a control system, the device applications usually contain a large fraction of error handling code. Many of these errors are run time errors which occur when communicating with the hardware, and usually have similar handling strategies. Therefore we extended ChimeraTK, a software toolkit for the development of control applications in various control system frameworks, such that the repetition of error handling code in each application can be avoided. ChimeraTK now also features automatic error reporting, recovery from device errors, and proper device initialisation after malfunctioning and at application start. | |||
Poster TUPV012 [2.255 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV012 | ||
About • | Received ※ 10 October 2021 Revised ※ 22 October 2021 Accepted ※ 20 November 2021 Issue date ※ 18 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV036 | An Evaluation of Schneider M580 HSBY PLC Redundancy in the R744 System A Cooling Unit | PLC, network, controls, power-supply | 484 |
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The Detector Technologies group at CERN has developed a 2-stage transcritical R744 cooling system as a service for future detector cooling. This is the first system in operation at CERN where Schneider HSBY (Hot Standby) redundant PLCs are used. This cooling system provides a good opportunity to test the Schneider redundant PLC system and understand the operation, limitations and probability of failure in a con-trolled environment. The PLC redundancy is achieved by connecting Schneider M580 HSBY redundant PLCs to the system where one is the primary which operates the system and the other is in standby mode. A series of tests have been developed to understand the operation and failure modes of the PLCs by simulating different primary PLC failures and observing whether the standby PLC can seamlessly take over the system operation. | |||
Poster TUPV036 [1.154 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV036 | ||
About • | Received ※ 09 October 2021 Revised ※ 29 October 2021 Accepted ※ 20 November 2021 Issue date ※ 31 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV037 | Modular Software Architecture for the New CERN Injector Wire-Scanners | controls, hardware, software, interface | 487 |
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In the scope of the LHC injector upgrade, new wire-scanner devices have been installed in the LHC injector circular accelerators. This paper outlines the software architecture and choices taken in order to provide the scanner experts with comprehensive diagnostics as well as operators with straightforward size measurements. The underlying electronics acquire large amounts of data that need to be accessible for expert and machine develop-ment use and need to be processed before being present-ed for daily operational use, in the shape of a beam pro-file and its derived size. Data delivery and measurement computation are accomplished by means of a modular structure, using functionally distributed real-time process-es that handle the different data views, with minimal interference in the processing, and minimal exchange of data among modules. | |||
Poster TUPV037 [1.214 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV037 | ||
About • | Received ※ 09 October 2021 Revised ※ 18 October 2021 Accepted ※ 20 November 2021 Issue date ※ 08 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
TUPV050 | Control System Upgrade of the High-Pressure Cell for Pressure-Jump X-Ray Diffraction | controls, EPICS, network, detector | 524 |
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This paper reports on the upgrade of the control system of a sample environment used to pressurise samples to 500 MPa at temperatures between -20 °C and 120 °C. The equipment can achieve millisecond pressure jumps for use in X-ray scattering experiments. It has been routinely available in beamline I22 at Diamond. The millisecond pressure-jump capability is unique. Example applications were the demonstration of pressure-induced formation of super crystals from PEGylated gold nanoparticles and the study of controlled assembly and disassembly of nanoscale protein cages. The project goal was to migrate the control system for the improved integration to EPICS and the GDA data acquisition software. The original control system uses National Instruments hardware controlled from LabView. The project looked at mapping the old control system hardware to alternatives in use at Diamond and migrating the control software. The paper discusses the choice of equipment used for ADC acquisition and equipment protection, using Omron PLCs and Beckhoff EtherCAT modules, a custom jump-trigger circuit, the calibration of the system and the next steps for testing the system. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-TUPV050 | ||
About • | Received ※ 13 October 2021 Revised ※ 29 October 2021 Accepted ※ 21 December 2021 Issue date ※ 22 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEAL02 | A Framework for High Level Machine Automation Based on Behavior Tree | TANGO, controls, GUI, database | 534 |
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In order to carry out complex tasks on particle accelerators, physicists and operators need to know the correct sequence of actions usually performed through a large number of graphical panels. The automation logics often embedded in the GUIs prevents its reuse by other programs, thus limiting the level of automation a control system can achieve. In order to overcome this limitation we have introduced a new automation framework for shifting the logics from GUIs to server side, where simple tasks can be easily organized, inspected and stacked up to build more complex actions. This tool is based on Behavior Trees (BT) which has been recently adopted in the gaming industry for in-game AI player opponents. They are able to create very complex tasks composed by simple decoupled self-contained tasks (nodes), regardless how they are implemented. The automation framework has been deployed in the Elettra and FERMI TANGO-based control systems to implement autonomous operations. A dedicated Qt GUI and a web interface allow to inspect the BTs and dynamically go through a tree, visualize the dependencies, monitor the execution and display any running action. | |||
Slides WEAL02 [1.809 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEAL02 | ||
About • | Received ※ 08 October 2021 Revised ※ 18 October 2021 Accepted ※ 21 November 2021 Issue date ※ 08 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEAR02 | Adaptations to COVID-19: How Working Remotely Has Made Teams Work Efficiently Together | software, controls, database, status | 550 |
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Funding: This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. The National Ignition Facility (NIF) is the world’s largest 192 laser beam system for Inertial Confinement Fusion (ICF) and High Energy Density Physics (HEDP) experiments. The NIF’s Integrated Computer Control System (ICCS) team conducts quarterly software releases, with two to three patches in between. Each of these software upgrades consists of deployment, regression testing, and a test shot. All of these are done with the team members inside the NIF control room. In addition, the NIF ICCS database team also performs the Database Installation and Verification Procedure dry run before each software upgrade. This is to anticipate any issue that may arise on the day of the release, prepare a solution for it, and make sure that the database part of the upgrade will be completed within the allotted time slot. This talk is about how the NIF ICCS software teams adapted when the LLNL workforce began working remotely due to the COVID-19 pandemic. These adaptations led to a better and more efficient way of conducting the NIF ICCS software upgrades. LLNL-ABS-821815 |
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Slides WEAR02 [1.586 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEAR02 | ||
About • | Received ※ 12 October 2021 Accepted ※ 09 February 2022 Issue date ※ 15 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEAR03 | Agility in Managing Experiment Control Software Systems | software, framework, project-management, controls | 553 |
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Most software development teams are proponents of Agile methodologies. Control system software teams, working at science facilities, are not always just developers, they undertake operations work, and may also be responsible for infrastructure from computer hardware to networks. Parts of the workflow this team interacts with may be Agile, but others may not be, and they may enforce deadlines that do not align with the typical agile implementations. There is the need to be more reactive when the facility is operating, which will impact any development work plans. Similarly, friction can occur between an Agile approach and more familiar existing long-standing risk-averse organisational approaches used on hardware projects. Based on experiences gained during the development of IBEX, the experiment control software used at the ISIS Pulsed Neutron and Muon source, this presentation will aim to explore what being Agile means, what challenges a multi-functional team can experience, and some solutions we have employed. | |||
Slides WEAR03 [4.449 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEAR03 | ||
About • | Received ※ 09 October 2021 Revised ※ 18 October 2021 Accepted ※ 25 February 2022 Issue date ※ 05 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEBR02 | Towards the Optimization of the Safety Life-Cycle for Safety Instrumented Systems | PLC, hardware, controls, software | 586 |
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The design and development of Safety Instrumented Systems (SIS) according to the IEC 61511 standard is a long and costly process. Although the standard gives recommendations and guidelines for each phase of the safety life-cycle, implementing them is not a simple task. Access to reliability data, hardware and systematic safety integrity analysis, software verification, generation of reports, guarantee of traceability between all the phases and management of the project are some of the main challenges. In addition, some of the industrial processes or test-benches of large scientific installations are in continuous evolution and changes are very common. This adds extra complexity to the management of these projects. This paper presents an analysis of the safety life-cycle workflow and discusses the biggest challenges based on our experience at CERN. It also establishes the basis for a selection of the tools for some of the safety life-cycle phases, proposes report templates and management procedures and, finally, describes the roles of the different members in our functional safety projects. | |||
Slides WEBR02 [2.603 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEBR02 | ||
About • | Received ※ 07 October 2021 Revised ※ 22 October 2021 Accepted ※ 21 December 2021 Issue date ※ 25 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEBR03 | The Fast Protection System for CSNS Accelerator | ion-source, hardware, power-supply, linac | 593 |
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The fast protection system for CSNS accelerator is a FPGA based protection system. The VME bus and SFP was adopted by the FPS. The FPS includes one central station and several sub-stations, and connnections between the central and the sub-stations are in star style. Two kinds of beam stopping modes are designed and implemented by FPS, one is the transient beam stopping and auto recovery mode, the other is the permanent beam stopping mode. The measured response time for the FPS is less than 1.5 micro-seconds. | |||
Slides WEBR03 [2.773 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEBR03 | ||
About • | Received ※ 19 October 2021 Revised ※ 25 January 2022 Accepted ※ 06 February 2022 Issue date ※ 11 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEBR05 | Integrated Supervision for Conventional and Machine-Protection Configuration Parameters at ITER | controls, interface, target, GUI | 602 |
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Configuration parameters for ITER’s I&C systems are predominantly high-coupled due to the nature of the process under control. Subsequently, I&C re-configuration requires an integrated supervision approach that addresses coupling through abstraction, automation, scalability, changeability, robustness and re-usability. Moreover, high-coupling might manifest at any tier of the I&C, and certainly spans configuration parameters across both conventional and machine-protection I&C. Stemming from ITER design guidelines, the handling of machine-protection configuration parameters needs to meet the goals of IEC61508-3. These goals are mostly in congruence with the main concerns of integrated supervision identified above. However they also extend requirements that bind the supervision process with traceability and audit capabilities from sources to final self-test (run-time) diagnostics. This presentation describes the provisions for integrated supervision at ITER and elaborates how these provisions can be used to handle machine-protection parameters in compliance with IEC61508-3. | |||
Slides WEBR05 [0.510 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEBR05 | ||
About • | Received ※ 07 October 2021 Revised ※ 18 October 2021 Accepted ※ 21 December 2021 Issue date ※ 27 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV001 | Temperature Control for Beamline Precision Systems of Sirius/LNLS | controls, cryogenics, hardware, experiment | 607 |
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Funding: Ministry of Science, Technology and Innovation (MCTI) Precision beamline systems, such as monochromators and mirrors, as well as sample stages and sample holders, may require fine thermal management to meet performance targets. Regarding the optical elements, the main aspects of interest include substrate integrity, in case of high power loads and densities; wavefront preservation, due to thermal distortions of the optical surfaces; and beam stability, related to thermal drift. Concerning the sample, nanometer positioning control, for example, may be affected by thermal drifts and the power management of some electrical elements. This work presents the temperature control architecture developed in house for precision elements at the first beamlines of Sirius, the 4th-generation light source at the Brazilian Synchrotron Light Laboratory (LNLS). Taking some optical components as case studies, the predictive thermal-model-based approach, the system identification techniques, the controller design workflow and the implementation in hardware are described, as well as the temperature stability results. |
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Poster WEPV001 [0.914 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV001 | ||
About • | Received ※ 15 October 2021 Accepted ※ 22 December 2021 Issue date ※ 21 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV002 | Position Scanning Solutions at the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS | controls, detector, experiment, MMI | 613 |
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Funding: Ministry of Science, Technology and Innovation (MCTI) TARUMÃ is the sub-microprobe station of the CARNAÚBA beamline at Sirius/LNLS*. Covering the range from 2.05 to 15keV, the probe consists of a fully-coherent monochromatic beam varying from 550 to 120nm with flux of up to 1e11ph/s/100mA after the achromatic focusing optics. Hence, positioning requirements span from nanometer-level errors for high-resolution experiments to fast continuous trajectories for high throughput, whereas a large flexibility is required for different sample setups and simultaneous multi-technique X-ray analyses, including tomography. To achieve this, the overall architecture of the station relies on a pragmatic sample positioning solution, with a rotation stage with a range of 220°, coarse stages for sub-micrometer resolution in a range of 20mm in XYZ and a fine piezo stage for nanometer resolution in a range of 0.3mm in XYZ. Typical scans consist of continuous raster 2D trajectories perpendicularly to the beam, over ranges that vary from tens to hundreds of micrometers, with acquisition times in range of milliseconds. Positioning is based on 4th order trajectories and feedforward, triggering includes the multiple detectors and data storage is addressed * Geraldes, R.R., et al. ’Design and Commissioning of the TARUMÃ Station at the CARNAÚBA Beamline at Sirius/LNLS’ Proc. MEDSI20 (2020). |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV002 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 05 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV006 | Automated Operation of ITER Using Behavior Tree Semantics | framework, interface, MMI, controls | 628 |
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The inherent complexity of the ITER machine and the diversity of the ways it will be operated in different phases, like commissioning or engineering operation, poses a great challenge for striking the right balance between operability, integration and automation. To facilitate the creation and execution of operational procedures in a robust and repeatable way, a software framework was developed: the Sequencer. As a supporting framework for tasks that are mostly goal-oriented, the Sequencer’s semantics are based on a behavior tree model that also supports concurrent flows of execution. In view of its intended use in very diverse situations, from small scale tests to full integrated operation, the architecture was designed to be composable and extensible from the start. User interactions with the Sequencer are fully decoupled and can be linked through dependency injection. The Sequencer library is currently feature-complete and comes with a command line interface for the encapsulation of procedures as system daemons or simple interactive use. It is highly maintainable due to its small and low complexity code base and dependencies to third party libraries are properly encapsulated. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV006 | ||
About • | Received ※ 08 October 2021 Accepted ※ 21 November 2021 Issue date ※ 30 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV010 | R&D of the KEK Linac Accelerator Tuning Using Machine Learning | injection, linac, network, electron | 640 |
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We have developed a machine-learning-based operation tuning scheme for the KEK e−/e+ injector linac (Linac), to improve the injection efficiency. The tuning scheme is based on the various accelerator operation data (control parameters, monitoring data and environmental data) of Linac. For the studies, we use the accumulated Linac operation data from 2018 to 2021. To solve the problems on the accelerator tuning of, 1. A lot of parameters (~1000) should be tuned, and these parameters are intricately correlated with each other; and 2. Continuous environmental change, due to temperature change, ground motion, tidal force, etc., affects to the operation tuning; We have developed, 1. Visualization of the accelerator parameters (~1000) trend/correlation distribution based on the dimensionality reduction using Variational Autoencoder (VAE), to see the long-term correlation between the accelerator operation parameters and the environmental data, and 2. Accelerator tuning method using the deep neural network, which is continuously updated with the short-term accelerator data to adapt the environment changes. In this presentation, we report the current status of the R&D. | |||
Poster WEPV010 [1.997 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV010 | ||
About • | Received ※ 10 October 2021 Revised ※ 19 October 2021 Accepted ※ 21 November 2021 Issue date ※ 11 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV012 | Beam Fast Recovery Study and Application for CAFe | linac, status, proton, controls | 648 |
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Based on the MASAR (MAchine Snapshot, Archiving, and Retrieve) system, a beam fast recovery system was designed and tested in CAFe (Chinese ADS Front-end Demo Superconducting Linac) at IMP/CAS for high cur-rent CW (Continuous Wave) beam. The proton beam was accelerated to about 20 MeV with 23 SC (Superconduct-ing) cavities, and the maximum current reaches about 10 mA. The fast-recovery system plays a major role in the 100-hours-100-kW long-term test, during which the aver-age time of the beam recovery is 7 second, achieving the availability higher than 90%. The system verifies the possibility for high current beam fast recovery in CiADS (China initiative Accelerator Driven sub-critical System). | |||
Poster WEPV012 [0.469 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV012 | ||
About • | Received ※ 10 October 2021 Revised ※ 22 October 2021 Accepted ※ 21 November 2021 Issue date ※ 02 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV015 | Development of the RF Phase Scan Application for the Beam Energy Measurement at KOMAC | EPICS, controls, interface, monitoring | 656 |
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The Korea Multi-purpose Accelerator Complex (KOMAC) proton accelerator consists of 11 Drift Tube Linac (DTL) tanks, and each tank’s RF phase setting must be matched to increase synchronous acceleration of continuous tanks. A series of processes operate on the basis of JAVA and MatLAB languages, and the phase scanning program and the analytical program are classified and used independently. To integrate the two programs, the new integrated program of the RF scan application is developed based on python and epics scan module for the stability with some upgrade functions. | |||
Poster WEPV015 [1.051 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV015 | ||
About • | Received ※ 08 October 2021 Revised ※ 19 October 2021 Accepted ※ 21 November 2021 Issue date ※ 16 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV019 | Renovation of the Beam-Based Feedback Controller in the LHC | controls, feedback, framework, optics | 671 |
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This work presents an extensive overview of the design choices and implementation of the Beam-Based Feedback System (BBFS) used in operation until the LHC Run 2. The main limitations of the BBFS are listed and a new design called BFCLHC, which uses the CERN Front-End Software Architecture (FESA), framework is proposed. The main implementation details and new features which improve upon the usability of the new design are then emphasised. Finally, a hardware agnostic testing framework developed by the LHC operations section is introduced. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV019 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 12 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV021 | Machine Learning for RF Breakdown Detection at CLARA | cavity, network, detector, gun | 681 |
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Maximising the accelerating gradient of RF structures is fundamental to improving accelerator facility performance and cost-effectiveness. Structures must be subjected to a conditioning process before operational use, in which the gradient is gradually increased up to the operating value. A limiting effect during this process is breakdown or vacuum arcing, which can cause damage that limits the ultimate operating gradient. Techniques to efficiently condition the cavities while minimising the number of breakdowns are therefore important. In this paper, machine learning techniques are applied to detect breakdown events in RF pulse traces by approaching the problem as anomaly detection, using a variational autoencoder. This process detects deviations from normal operation and classifies them with near perfect accuracy. Offline data from various sources has been used to develop the techniques, which we aim to test at the CLARA facility at Daresbury Laboratory. These techniques could then be applied generally. | |||
Poster WEPV021 [1.565 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV021 | ||
About • | Received ※ 09 October 2021 Accepted ※ 21 November 2021 Issue date ※ 24 November 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV023 | Development of a Smart Alarm System for the CEBAF Injector | network, vacuum, solenoid, quadrupole | 691 |
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Funding: This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Award Number DE-SC0019682. RadiaSoft and Jefferson Laboratory are working together to develop a machine-learning-based smart alarm system for the CEBAF injector. Because of the injector’s large number of parameters and possible fault scenarios, it is highly desirable to have an autonomous alarm system that can quickly identify and diagnose unusual machine states. We present our work on artificial neural networks designed to identify such undesirable machine states. In particular, we test both auto-encoders and inverse models as possible tools for differentiating between normal and abnormal states. These models are being developed using both supervised and unsupervised learning techniques, and are being trained using CEBAF injector data collected during dedicated machine studies as well as during regular operations. Lastly, we discuss tradeoffs between the two types of models. |
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DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV023 | ||
About • | Received ※ 10 October 2021 Accepted ※ 19 January 2022 Issue date ※ 14 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV037 | Development of a Voltage Interlock System for Normal-Conducting Magnets in the Neutrino Experimental Facility at J-PARC | experiment, power-supply, proton, controls | 738 |
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We are upgrading a beamline of neutrino experimental facility at J-PARC to realize its 1.3MW operation. One of the upgrade items is to strengthen machine protection interlocks at the beamline. So far, we have developed an interlock system that monitors the output current of the power supplies for normal-conducting(NC) magnets at the primary beamline. On the other hand, we observed an event that a coil-short in one of bending magnets at a beam transport line at J-PARC (3-50BT) happened in 2019 and it caused a drift of beam orbit over the time. Our present interlock system can not detect a similar coil-short in the magnet while such change of the beam orbit may cause a serious trouble. One of possible way to detect such coil-short is to monitor a voltage of the magnet coil. Actually, a significant voltage drop between layers of the coil was observed for the 3-50BT magnet coil-short. Focusing on the fact, we are developing a system that constantly monitors the voltage value of the magnets at primary beamline and issues an interlock when there is a fluctuation exceeding a threshold value. We report the progress of development of the system. | |||
Poster WEPV037 [7.195 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV037 | ||
About • | Received ※ 27 October 2021 Revised ※ 11 November 2021 Accepted ※ 21 November 2021 Issue date ※ 12 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV038 | Performance Verification of New Machine Protection System Prototype for RIKEN RI Beam Factory | FPGA, controls, PLC, factory | 742 |
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We report on performance verification of a prototype of a new machine protection system for the RIKEN Radioactive Isotope Beam Factory (RIBF). This prototype was developed to update a beam interlock system (BIS) in operation since 2006. The new system, like the BIS, is configured using a programmable logic controller (PLC). We applied the prototype to a small part of RIBF and started its operation in Sept., 2020. It consists of two separate PLC stations, and there are 28 digital inputs and 23 analog inputs as interlock signals, and 5 digital outputs are used to stop a beam in total. The observed response time averaged 2 ms and 5.7 ms, respectively, within one station and with both stations. When deploying the prototype in the same scale as the BIS, which consists of 5 PLC stations with roughly 400 signals, the response time is estimated to be over 10 ms, which means that it is too long to protect the equipment when the intensity of the beam accelerated at RIBF becomes higher. Therefore, we are starting to redesign a system by adding a field-programmable gate array (FPGA) to shorten the response time significantly rather than repeating minor improvements to save a few milliseconds. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV038 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 24 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV039 | Novel Personnel Safety System for HLS-II | radiation, controls, PLC, EPICS | 746 |
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Funding: Supported by the National Natural Science Foundation of China (No.113751861) The Hefei Light Source-II (HLS-II) is a vacuum ultraviolet synchrotron light source. The Personnel Safety System (PSS) is the crucial part to protect staff and users from radiation damages. In order to share access control information and improve the reliability for HLS-II, the novel PSS is designed based on Siemens redundant PLC under EPICS environment which is composed by the safety interlock system, access control system and the radiation monitoring system. This paper will demonstrate the architecture and the specific design of this novel PSS and shows the operation performance after it has been implemented for 2 years. |
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Poster WEPV039 [3.318 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV039 | ||
About • | Received ※ 30 September 2021 Revised ※ 22 October 2021 Accepted ※ 21 November 2021 Issue date ※ 02 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV040 | Design of Machine Protection System for SXFEL-UF | FEL, controls, interface, vacuum | 750 |
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Shanghai Soft X-ray Free-Electron Laser (SXFEL) facility is divided into two phases: the SXFEL test facility (SXFEL-TF) and the SXFEL user facility (SXFEL-UF). SXFEL-TF has met all the design specifications and has been available in beam operating state. SXFEL-UF is currently under commissioning and is planned to generate 3 nm FEL radiation using a 1.5 GeV electron LINAC. To protect the critical equipment rapidly and effectively from unexpected damage, a reliable safety interlocking system needs to be designed. Machine Protection System (MPS) is designed by Programmable Logic Controller (PLC) and Experimental Physics and Industrial Control System (EPICS) which is based on a master-slave architecture. In order to meet different commissioning and operation requirements, the management and switching functions of eight operation modes are introduced in the MPS system. There are two FEL line in user facility named SXFEL beamline project (BSP) and undulator (UD) , and the corresponding design of MPS is completed. This paper focuses on the progress and challenges associated with the SXFEL-UF MPS. | |||
Poster WEPV040 [0.883 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV040 | ||
About • | Received ※ 10 October 2021 Revised ※ 20 October 2021 Accepted ※ 21 November 2021 Issue date ※ 07 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV044 | Beam Profile Measurements as Part of the Safe and Efficient Operation of the New SPS Beam Dump System | software, status, target, MMI | 764 |
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In the framework of the LHC Injectors Upgrade (LIU) project, the Super Proton Synchrotron (SPS) accelerator at CERN is undergoing a profound upgrade including a new high-energy beam dump. The new Target Internal Dump Vertical Graphite (TIDVG#5) is designed to withstand an average dumped beam power as high as 235 kW to cope with the increased intensity and brightness of the LIU beams whose energies in the SPS range from 14 to 450 GeV. Considering such highly demanding specifications, the constant monitoring of the device’s status and the characteristics of the beams that are dumped to it is of utmost importance to guarantee an efficient operation with little or no limitations. While the former is ensured with several internal temperature sensors, a Beam Observation system based on a scintillating screen and a digital camera is installed to extract the profile of the beam dumped in TIDVG#5 for post mortem analysis. This paper describes the overall system that uses the BTV images to contribute to the safe and efficient operation of the SPS Beam Dump System (SBDS) and hence the accelerator. | |||
Poster WEPV044 [0.723 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV044 | ||
About • | Received ※ 10 October 2021 Revised ※ 22 October 2021 Accepted ※ 22 December 2021 Issue date ※ 09 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
WEPV047 | Supporting Flexible Runtime Control and Storage Ring Operation with the FAIR Settings Management System | storage-ring, controls, timing, experiment | 768 |
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The FAIR Settings Management system has now been used productively for the GSI accelerator facility operating synchrotrons, storage rings, and transfer lines. The system’s core is being developed in a collaboration with CERN, and is based on CERN’s LHC Software Architecture (LSA) framework. At GSI, 2018 was dedicated to integrating the Beam Scheduling System BSS. Major implementations for storage rings were performed in 2019, while 2020 the main focus was on optimizing the performance of the overall control system. Integrating with the BSS allows us to configure the beam execution directly from the settings management system. Defining signals and conditions enables us to control the runtime behavior of the machine. The storage ring mode supports flexible operation with features allowing to pause the machine and execute in-cycle modifications, using concepts like breakpoints, repetitions, skipping, and manipulation. After providing these major new features and their successful productive use, the focus was shifted on optimizing their performance. The performance was analyzed and improved based on real-word scenarios defined by operations and machine experts. | |||
Poster WEPV047 [0.692 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-WEPV047 | ||
About • | Received ※ 09 October 2021 Accepted ※ 23 November 2021 Issue date ※ 22 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THAL03 | Machine Learning Based Middle-Layer for Autonomous Accelerator Operation and Control | controls, linac, vacuum, gun | 797 |
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The Singularity project, led by National Laboratories of Frascati of the National Institute for Nuclear Physics (INFN-LNF), aim to develop automated machine-independent middle-layer to control accelerator operation through machine learning (ML) algorithms like Reinforcement Learning (RL) and Cluster integrated with accelerator’s sub-systems. In this work we will present architecture and of the middle-layer made with main purpose to drive user requests through the control framework backend and allow users to enjoy a better User Experience (UX) handling system performances without facing problems due to the interaction with control system. We will report the strategy to develop autonomous operation control with RL algorithms together with the fault detection capability improved by Clustering approach as breakdown and waveguide and RF cavity thermal stability monitor. Results of the first period of operation of this system, currently operating at the electron-positron LINAC of the Dafne complex in Frascati, autonomously controlling accelerator performance in terms of beam transport, beam current optimization and RF cavity phase-jitter compensation will be reported. | |||
Slides THAL03 [0.960 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THAL03 | ||
About • | Received ※ 19 October 2021 Accepted ※ 22 December 2021 Issue date ※ 16 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THAR01 | MINT, an ITER Tool for Interactive Visualization of Data | interface, GUI, electron, experiment | 809 |
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ITER will produce large volumes of data that need to be visualized and analyzed. This paper describes the development of a graphical data visualization and exploration tool, MINT (Make Informative and Nice Trends), for plant engineers, operators and physicists. It describes the early development phase from requirements capture to first release covering the mistakes, lessons learnt and future steps. The requirements were collected by interviewing the various stakeholders. The initial neglect of the architecture and user-friendliness turned out to be key points when developing such a tool for a project with a long lifetime like ITER. Modular architecture and clear definition of generic interfaces (abstraction layer) is crucial for such a long lifetime project and makes it ready for future adaptations to new plotting, processing and GUI libraries. The MINT application is based upon the development of an independent plotting library, which acts as a wrapper to the underlying graphical library. This allows scientists and engineers to develop their own specific tools, which are immune to changes of graphical library. The development based on Python uses Qt5 as the visual backend. | |||
Slides THAR01 [5.386 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THAR01 | ||
About • | Received ※ 08 October 2021 Revised ※ 22 October 2021 Accepted ※ 17 November 2021 Issue date ※ 23 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THBL03 | The State of Containerization in CERN Accelerator Controls | controls, software, Linux, hardware | 829 |
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In industry, containers have dramatically changed the way system administrators deploy and manage applications. Developers are gradually switching from delivering monolithic applications to microservices. Using containerization solutions provides many advantages, such as: applications running in an isolated manner, decoupled from the operating system and its libraries; run-time dependencies, including access to persistent storage, are clearly declared. However, introducing these new techniques requires significant modifications of existing computing infrastructure as well as a cultural change. This contribution will explore practical use cases for containers and container orchestration within the CERN Accelerator Controls domain. We will explore challenges that have been arising in this field for the past two years and technical choices that we have made to tackle them. We will also outline the foreseen future developments. | |||
Slides THBL03 [0.863 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THBL03 | ||
About • | Received ※ 08 October 2021 Revised ※ 24 October 2021 Accepted ※ 06 January 2022 Issue date ※ 28 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV005 | Virtual Reality and Control Systems: How a 3D System Looks Like | controls, interface, software, feedback | 864 |
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Virtual Reality (VR) technology and its derivatives are mature enough to be used in environments like a nuclear research laboratory, to provide useful tools and procedures to optimize the tasks of developers and operators. Preliminary tests were performed [*] to understand the feasibility of this technology applied to a nuclear physics laboratory with promising feedback. Due to the fact this technology is rapidly diffusing in several different professional heterogeneous environments, such as medicine, architecture, the military and industry, we tried to evaluate the impact coming from a new kind of Human-Machine Interface based on VR.
* L.Pranovi et al., ’Vr as a Service: Use of Virtual Reality in a Nuclear Accelerator Facility’, ICALEPCS 2019, New York, NY, USA |
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Poster THPV005 [2.374 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV005 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 19 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV010 | Scaling Up the ALBA Cabling Database and Plans to Turn into an Asset Management System | controls, database, electron, electronics | 878 |
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The "Cabling and Controls Database" (CCDB) is a central repository where the different teams of ALBA manage the information of installed racks, equipment, cables and connectors, and their connections and technical specifications. ALBA has modernized this web application for sustainability reasons and fit new needs detected throughout the last years of operation in our facility. The application has been linked to Jira to allow tracking problems in specific installed equipment or locations. In addition, it also connects to the ALBA Inventory Pools application, the warehouse management system, where the stock of physical equipment and components are maintained to get information on the life cycle of the different devices. These new features, integrated with proprietary products like Jira and Insight, aim to become ALBA’s asset management system. This paper aims to describe the main features of the recent application upgrade, currently in continuous development. | |||
Poster THPV010 [1.145 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV010 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 05 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV012 | LHC Collimation Controls System for Run III Operation | alignment, collimation, controls, software | 888 |
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The Large Hadron Collider (LHC) collimation system is designed to protect the machine against unavoidable beam losses. The collimation system for the LHC Run 3, starting in 2022, consists of more than 100 movable collimators located along the 27 km long ring and in the transfer lines. The cleaning performance and machine protection role of the system critically depend on the accurate positioning of the collimator jaws. The collimation control system in place enables remote control and appropriate diagnostics of the relevant parameters. This ensures that the collimators dynamically follow optimum settings in all phases of the LHC operational cycle. In this paper, an overview of the top-level software tools available for collimation control from the control room is given. These tools range from collimator alignment applications to generation tools for collimator settings, as well as collimator scans, settings checks and machine protection sequences. Amongst these tools the key upgrades and newly introduced tools for the Run 3 are presented. | |||
Poster THPV012 [5.521 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV012 | ||
About • | Received ※ 07 October 2021 Revised ※ 25 October 2021 Accepted ※ 16 December 2021 Issue date ※ 01 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV014 | Adopting PyQt for Beam Instrumentation GUI Development at CERN | GUI, controls, interface, MMI | 899 |
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As Java GUI toolkits become deprecated, the Beam Instrumentation (BI)group at CERN has investigated alternatives and selected PyQt as one of the suitable technologies for future GUIs, in accordance with the paper presented at ICALEPCS19. This paper presents tools created, or adapted, to seamlessly integrate future PyQt GUI development alongside current Java oriented workflows and the controls environment. This includes (a) creating a project template and a GUI management tool to ease and standardize our development process, (b) rewriting our previously Java-centric Expert GUI Launcher to be language-agnostic and (c) porting a selection of operational GUIs from Java to PyQt, to test the feasibility of the development process and identify bottlenecks. To conclude, the challenges we anticipate for the BI GUI developer community in adopting this new technology are also discussed. | |||
Poster THPV014 [1.451 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV014 | ||
About • | Received ※ 10 October 2021 Accepted ※ 29 November 2021 Issue date ※ 23 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV021 | TATU: A Flexible FPGA-Based Trigger and Timer Unit Created on CompactRIO for the First Sirius Beamlines | FPGA, controls, EPICS, experiment | 908 |
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In the modern synchrotron light sources, the higher brilliance leads to shorter acquisition times at the experimental stations. For most beamlines of the fourth-generation source SIRIUS, it was imperative to shift from the usual software-based synchronization of operations to the much faster triggering by hardware of some key equipment involved in the experiments. As a basis of their control system for devices, the SIRIUS beamlines have standard CompactRIO controllers and I/O modules along the hutches. Equipped with a FPGA and a hard processor running Linux Real-Time, this platform could deal with the triggers from and to other devices, in the order of ms and µs. TATU (Time and Trigger Unit) is a code running in a CompactRIO unit to coordinate multiple triggering conditions and actions. TATU can be either the master pulse generator or the follower of other signals. Complex trigger pattern generation is set from a user-friendly standardized interface. EPICS process variables (by means of LNLS Nheengatu*) are used to set parameters and to follow the execution status. The concept and first field test results in at least four SIRIUS beamlines are presented.
* D. Alnajjar, G. S. Fedel, and J. R. Piton, "Project Nheengatu: EPICS support for CompactRIO FPGA and LabVIEW-RT", ICALEPCS’19, New York, NY, USA, Oct. 2019, paper WEMPL002. |
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Poster THPV021 [0.618 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV021 | ||
About • | Received ※ 10 October 2021 Accepted ※ 21 November 2021 Issue date ※ 02 February 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV022 | MRF Timing System Design at SARAF | timing, controls, EPICS, interface | 912 |
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CEA Saclay Irfu is in charge of an important part of the control system of the SARAF LINAC accelerator based at Soreq (Israel). This includes, among other, the control of the timing system (synchronization and timestamping). CEA has already installed and uses successfully the timing distribution with MRF on test benches for ESS or IPHI, so it has been decided to use the same technologies. The reference frequency will be distributed along the accelerator by a master oscillator Wenzel and the UTC time will be based on a Meridian II GPS, these 2 devices will be connected to the Event Master (EVM) card which is the main element of the timing system architecture. Through an optical fiber network, the MRF timing system allows to distribute downstream and upstream events with a µs propagation time. Currently, we are working on development in order to also use it for the machine protection system of the accelerator. In this paper, hardware, timing architecture, software developments and tests will be presented. | |||
Poster THPV022 [1.539 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV022 | ||
About • | Received ※ 08 October 2021 Revised ※ 20 October 2021 Accepted ※ 23 January 2022 Issue date ※ 01 March 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV027 | Application of the White Rabbit System at SuperKEKB | distributed, timing, controls, linac | 919 |
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We employ the White Rabbit system to satisfy the increasing requests from the SuperKEKB operations. The SuperKEKB-type slave node was developed based on the SPEC board and FMC-DIO card. The firmware was customized slightly to realize the SuperKEKB needs. The device/driver for EPICS was developed. The five slave nodes have been operated since the 2021 autumn run. The delivery of the beam permission signal from the central control building to the injector linac is taken care of by new slave nodes. The timing of the abort request signal and the trigger for the abort kicker magnet are recorded with the distributed TDC system. More slave nodes will be installed in the next year to enhance the role of the distributed TDC system. | |||
Poster THPV027 [1.186 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV027 | ||
About • | Received ※ 10 October 2021 Revised ※ 25 October 2021 Accepted ※ 21 November 2021 Issue date ※ 08 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV028 | Analysis of AC Line Fluctuation for Timing System at KEK | timing, injection, linac, positron | 923 |
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The timing system controls the injection procedure of the accelerator by performing signal synchronization and trigger delivery to the devices all over the installations at KEK. The trigger signals is usually generated at the same phase of an AC power line to reduce the unwanted variation of the beam quality. This requirement originates from the power supply systems. However, the AC line synchronization conflicts with the bucket selection process of SuperKEKB low energy ring (LER) which stores the positron beam. The positron beam is firstly injected into a damping ring (DR) to lower the emittance before entering desired RF bucket in LER. A long bucket selection cycle for DR and LER makes it difficult to coincide with AC line every injection pulse. This trouble is solved by grouping several injection pulses into various of injection sequences and manipulating the length of sequences to adjust the AC line arrival timing. Therefore, the timing system is sensitive to drastically AC line fluctuation. The failure of timing system caused by strong AC line fluctuation and solutions are introduced in this work. | |||
Poster THPV028 [1.010 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV028 | ||
About • | Received ※ 17 October 2021 Revised ※ 28 October 2021 Accepted ※ 21 November 2021 Issue date ※ 09 December 2021 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV029 | Development of Timing Read-Back System for Stable Operation of J-PARC | timing, LLRF, proton, controls | 927 |
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Since 2006, the Japan Proton Accelerator Research Complex (J-PARC) timing system has been operated successfully. However, there were some unexpected trig-ger-failure events, typically missing trigger events, during the operation over 15 years. When a trigger-failure event occurred, it was often tough to find the one with the fault among many suspected modules. To solve the problem more easily, a unique device, triggered scaler, was devel-oped for reading back accelerator signals. The performance of the module has been evaluated in 2018. In 2021, we measured and observed an LLRF sig-nal as the first signal of the read-back system for beam operation. After firmware upgrades of the module, some customized timing read-back systems were developed, and successfully demonstrated as coping strategies for past trigger-failure events. In addition, a future plan to apply the read-back system to other facilities is discussed. More details are given in the paper. | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV029 | ||
About • | Received ※ 20 October 2021 Accepted ※ 21 November 2021 Issue date ※ 13 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV031 | Upgrade of Timing System at HZDR ELBE Facility | timing, hardware, controls, GUI | 931 |
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The ELBE center for high power radiation sources is operating an electron linear accelerator to generate various secondary radiation like neutrons, positrons, intense THz and IR pulses and Bremsstrahlung. Timing system, that is currently in operation, has been modified and extended in the last two decades to enable new experiments. At the moment parts of this timing system are using obsolete components which makes maintenance a very challenging endeavour. To make ELBE timing system again a more homogenous system, that will allow for easier adaption to new and more complex trigger patterns, an upgrade based on Micro Research Finland (MRF) hardware platform is currently in progress. This upgrade will enable parallel operation of two electron sources and subsequent kickers to serve multiple end stations at the same time. Selected hardware enables low jitter emission of timing patterns and a long-term delay compensation of the distribution network. We are currently in the final phase of development and with plans for commissioning to be completed in 2022. | |||
Poster THPV031 [2.801 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV031 | ||
About • | Received ※ 11 October 2021 Revised ※ 20 October 2021 Accepted ※ 21 November 2021 Issue date ※ 11 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
THPV038 | Plug-in-Based Ptychography & CDI Reconstruction User Interface Development | interface, framework, synchrotron, detector | 950 |
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Synchrotron beamlines have a wide range of fields, and accordingly, various open source and commercial softwares are being used for data analysis. Inevitable, the user interface differs between programs and there is little shared part, so the user had to spend a lot of effort to perform a new experimental analysis and learn how to use the program newly. In order to overcome these shortcomings, the same user interface was maintained using the Xi-cam framework, and different analysis algorithms for each field were introduced in a plugin method. In this presentation, user interfaces designed for ptychography and cdi reconstruction will be introduced. | |||
Poster THPV038 [1.333 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV038 | ||
About • | Received ※ 08 October 2021 Revised ※ 25 October 2021 Accepted ※ 21 November 2021 Issue date ※ 12 December 2021 | ||
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THPV040 | New Machine Learning Model Application for the Automatic LHC Collimator Beam-Based Alignment | alignment, injection, flattop, software | 953 |
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A collimation system is installed in the Large Hadron Collider (LHC) to protect its sensitive equipment from unavoidable beam losses. An alignment procedure determines the settings of each collimator, by moving the collimator jaws towards the beam until a characteristic loss pattern, consisting of a sharp rise followed by a slow decay, is observed in downstream beam loss monitors. This indicates that the collimator jaw intercepted the reference beam halo and is thus aligned to the beam. The latest alignment software introduced in 2018 relies on supervised machine learning (ML) to detect such spike patterns in real-time*. This enables the automatic alignment of the collimators with a significant reduction in the alignment time**. This paper analyses the first-use performance of this new software focusing on solutions to the identified bottleneck caused by waiting a fixed duration of time when detecting spikes. It is proposed to replace the supervised ML model with a Long-Short Term Memory model able to detect spikes in time windows of varying lengths, waiting for a variable duration of time determined by the spike itself. This will allow to further speed up the automatic alignment.
*G. Azzopardi et al., "Automatic spike detection in beam loss signals for LHC collimator alignment", NIMA 2019. **G. Azzopardi et al., "Operational Results of LHC collimator alignment using ML", IPAC’19. |
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Poster THPV040 [0.894 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV040 | ||
About • | Received ※ 08 October 2021 Accepted ※ 21 November 2021 Issue date ※ 10 December 2021 | ||
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THPV041 | Innovative Methodology Dedicated to the CERN LHC Cryogenic Valves Based on Modern Algorithm for Fault Detection and Predictive Diagnostics | cryogenics, controls, diagnostics, experiment | 959 |
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The European Organization for Nuclear Research (CERN) cryogenic infrastructure is composed of many equipment, among them there are the cryogenic valves widely used in the Large Hadron Collider (LHC) cryogenic facility. At present time, diagnostic solutions that can be integrated into the process control systems, capable to identify leak failures in valves bellows, are not available. The authors goal has been the development of a system that allows the detection of helium leaking valves during normal operation using available data extracted from the control system. The design constraints has driven the development towards a solution integrated in the monitoring systems in use, not requiring manual interventions. The methodology presented in this article is based on the extraction of distinctive features (analyzing the data in time and frequency domain) which are exploited in the next phase of machine learning. The aim is to identify a list of candidate valves with a high probability of helium leakage. The proposed methodology, which is at very early stage now, with the evolution of the data set and the iterative approach is aiming toward a cryogenic valves targeted maintenance. | |||
Poster THPV041 [1.120 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV041 | ||
About • | Received ※ 06 October 2021 Revised ※ 26 October 2021 Accepted ※ 22 December 2021 Issue date ※ 02 March 2022 | ||
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THPV043 | Using AI for Management of Field Emission in SRF Linacs | radiation, cavity, detector, linac | 970 |
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Funding: This work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Contract No. DE-AC05-06OR23177. Field emission control, mitigation, and reduction is critical for reliable operation of high gradient superconducting radio-frequency (SRF) accelerators. With the SRF cavities at high gradients, the field emission of electrons from cavity walls can occur and will impact the operational gradient, radiological environment via activated components, and reliability of CEBAF’s two linacs. A new effort has started to minimize field emission in the CEBAF linacs by re-distributing cavity gradients. To measure radiation levels, newly designed neutron and gamma radiation dose rate monitors have been installed in both linacs. Artificial intelligence (AI) techniques will be used to identify cavities with high levels of field emission based on control system data such as radiation levels, cryogenic readbacks, and vacuum loads. The gradients on the most offending cavities will be reduced and compensated for by increasing the gradients on least offensive cavities. Training data will be collected during this year’s operational program and initial implementation of AI models will be deployed. Preliminary results and future plans are presented. |
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Poster THPV043 [1.857 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV043 | ||
About • | Received ※ 08 October 2021 Revised ※ 21 October 2021 Accepted ※ 21 November 2021 Issue date ※ 14 December 2021 | ||
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THPV049 | Virtualisation and Software Appliances as Means for Deployment of SCADA in Isolated Systems | controls, SCADA, software, network | 985 |
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The paper discusses the use of virtualisation as a way to deliver a complete pre-configured SCADA (Supervisory Control And Data Acquisition) application as a software appliance to ease its deployment and maintenance. For the off-premise control systems, it allows for deployment to be performed by the local IT servicing teams with no particular control-specific knowledge, providing a "turn-key" solution. The virtualisation of a complete desktop allows to deliver and reuse the existing feature-rich Human-Machine Interface experience for local operation; it also resolves the issues of hardware and software compatibilities in the deployment sites. The approach presented here was employed to provide replicas of the "LUCASZ" cooling system to collaborating laboratories, where the on-site knowledge of underlying technologies was not available and required to encapsulate the controls as a "black-box" so that for users, the system is operational soon after power is applied. The approach is generally applicable for international collaborations where control systems are contributed and need to be maintained by remote teams | |||
Poster THPV049 [2.954 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-THPV049 | ||
About • | Received ※ 08 October 2021 Revised ※ 30 November 2021 Accepted ※ 19 February 2022 Issue date ※ 25 February 2022 | ||
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FRAL01 | The Laser MegaJoule Facility Status Report | target, laser, experiment, diagnostics | 989 |
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The Laser MegaJoule (LMJ), the French 176-beam laser facility, is located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy on targets, for high energy density physics experiments, including fusion experiments. The first bundle of 8-beams was commissioned in October 2014. By the end of 2021, ten bundles of 8-beams are expected to be fully operational. In this paper, we will present: - The LMJ Bundles Status report - The main evolutions of the LMJ facility since ICALEPS 2019: the new target diagnostics commissioned and a new functionality to manage final optic damage with the implementation of blockers in the beam. - the result of a major milestone for the project : ‘Fusion Milestone’ | |||
Slides FRAL01 [7.812 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-FRAL01 | ||
About • | Received ※ 09 October 2021 Revised ※ 01 February 2022 Accepted ※ 22 February 2022 Issue date ※ 01 March 2022 | ||
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FRAR02 | canone3: A New Service and Development Framework for the Web and Platform Independent Applications* | controls, interface, TANGO, framework | 1023 |
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Funding: * inspiration by Alessio Igor Bogani, Elettra, Trieste, Italy On the wake of former web interfaces developed at ELETTRA as well as in other institutes, the service and development framework for the web and platform independent applications named PUMA has been substantially enhanced and rewritten, with the additional objectives of high availability, scalability, load balancing, responsiveness and customization. Thorough analysis of Websocket limits led to an SSE based server technology relying on channels (Nchan over NGINX) to deliver the events to the clients. The development of the latter is supported by JQuery, Bootstrap, D3js, SVG and QT and helps build interfaces ranging from mobile to dashboard. Ultimate developments led to successful load balancing and failover actions, owing to the joint cooperation of a dedicated service supervisor and the NGINX upstream module. |
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Slides FRAR02 [3.605 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-FRAR02 | ||
About • | Received ※ 08 October 2021 Revised ※ 10 November 2021 Accepted ※ 21 December 2021 Issue date ※ 01 March 2022 | ||
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FRBL01 | Machine Learning for Anomaly Detection in Continuous Signals | network, neutron, controls, software | 1032 |
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Funding: UKRI / STFC High availability at accelerators such as the ISIS Neutron and Muon Source is a key operational goal, requiring rapid detection and response to anomalies within the accelerator’s subsystems. While monitoring systems are in place for this purpose, they often require human expertise and intervention to operate effectively or are limited to predefined classes of anomaly. Machine learning (ML) has emerged as a valuable tool for automated anomaly detection in time series signal data. An ML pipeline suitable for anomaly detection in continuous signals is described, from labeling data for supervised ML algorithms to model selection and evaluation. These techniques are applied to detecting periods of temperature instability in the liquid methane moderator on ISIS Target Station 1. We demonstrate how this ML pipeline can be used to improve the speed and accuracy of detection of these anomalies. |
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Slides FRBL01 [12.611 MB] | |||
DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2021-FRBL01 | ||
About • | Received ※ 08 October 2021 Revised ※ 27 October 2021 Accepted ※ 21 December 2021 Issue date ※ 24 January 2022 | ||
Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||