Integrating Diverse Systems
Paper Title Page
MOCPL01
 Orchestrating a System  
 
  • A.C. Lombrozo
    Sandia National Laboratories, Albuquerque, New Mexico, USA
  
  Funding: US Department of Energy's National Nuclear Security Administration under contract DE-AC04AL85000
Pulsed power facilities require a wide variety of control systems to operate efficiently. Relatively slow distributed control systems that process water are okay taking hundreds of milliseconds to respond to a physical change while small pulsed power lasers may need to reliably respond to a change within hundreds of nanoseconds. Building these control systems requires more than just the ability to write lines of code and wire up embedded controllers. Knowledge of hardware capability and planning appropriately will end up saving lots of time. Tailoring your hardware/software choices to the environment in which the system is expected to function and correctly choosing a solution that will fit your needs will contribute to the overall success and longevity of your control system. In this presentation, we will cover some of the design decisions that go into 'making things work fast enough' while providing a real-world example of a system that is 'good enough'. 		 
video icon Talk as video stream: https://youtu.be/xg1sJ3tdIyU  
slides icon Slides MOCPL01 [3.345 MB]  
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MOCPL02 Experiences with Laser Survey Instrument Based Approach to National Ignition Facility Diagnostic Alignments 52
 
  • E.F. Wilson, M.A. Fedorov, J.R. Hoffman, W.A. Howes, M.J. Lewis, C.L.M. Martinez-Nieves, V. Pacheu, N. Shingleton
    LLNL, Livermore, California, USA
  
  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) uses powerful lasers to compress targets, to study high energy density physics. Sophisticated diagnostics are placed close to the targets to record the results of each shot. The placement of these diagnostics relative to the target is critical to the mission, with alignment tolerances on the order of 500 microns. The integration of commercial laser-based survey instruments into the NIF control system has improved diagnostic alignment in many ways. The Advanced Tracking Laser Alignment System (ATLAS) project incorporates commercial Faro laser tracker instruments into the diagnostic factory and the target chamber, improving alignment accuracy over prior systems. The system uses multiple retroreflectors mounted on each of the diagnostic positioners to translate to a 6D position in the NIF target chamber volume. This enables a closed loop alignment process to align each diagnostic. This paper provides an overview of how the laser tracker is used in diagnostic alignment, and discusses challenges met by the control system to achieve this integration. 		 
video icon Talk as video stream: https://youtu.be/AIK4GBUOmCw  
slides icon Slides MOCPL02 [278.247 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL02  
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MOCPL03 PROFINET Communication Card for the CERN Cryogenics Crate Electronics Instrumentation 59
 
  • R.K. Mastyna, E. Blanco Viñuela, J. Casas, N. Trikoupis
    CERN, Geneva, Switzerland
  • M. Felser
    BFH, Bern, Switzerland
  
  The ITER-CERN collaboration agreement initiated the development of a PROFINET communication interface which may replace the WorldFIP interface in non-radiation areas. The main advantage of PROFINET is a simplified integration within the CERN controls infrastructure that is based on Programmable Logic Controllers (PLCs). CERN prepared the requirements and subcontracted the design of a communication card prototype to the Technical University of Bern. The designed PROFINET card prototype uses the NetX Integrated Circuit (IC) for PROFINET communication and a FPGA to collect the electrical signals from the back-panel (electrical signals interface for instrumentation conditioning cards). CERN is implementing new functionalities involving programming, automation engineering and electronics circuit design. The communication between the card and higher layers of control is based on the OPC UA protocol. The configuration files supporting new types of instrumentation cards are being developed and are compatible with the SIEMENS SIMATIC automation environment. It is worth to mention that all required data calculations and protocol handling are performed using a single netX50 chip.  
video icon Talk as video stream: https://youtu.be/sbCUmUi8VVc  
slides icon Slides MOCPL03 [3.277 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL03  
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MOCPL04 LTE/3G Based Wireless Communications for Remote Control and Monitoring of PLC-Controlled Vacuum Mobile Devices 64
 
  • R. Ferreira, S. Blanchard, P. Gomes, G. Pigny
    CERN, Geneva, Switzerland
  • T.R. Fernandes
    ESTGL, Leiria, Portugal
  
  All particle accelerators and most experiments at CERN require high (HV) or ultra-high (UHV) vacuum levels. Contributing to vacuum production are two types of mobile devices: Turbo-Molecular Pumping Groups and Bakeout Racks. During accelerator stops, these PLC-controlled devices are temporarily installed in the tunnels and integrated in the Vacuum SCADA, through wired Profibus-DP. This method, though functional, poses cer-tain issues which a wireless solution would greatly miti-gate. The CERN private LTE/3G network is available in the accelerators through a leaky-feeder antenna cable which spans the whole length of the tunnels. This paper describes the conception and implementation of an LTE/3G-based modular communication system for PLC-controlled vacuum mobile devices. It details the hardware and software architecture of the system and lays the foun-dation of a solution that can be easily adapted to systems other than vacuum.  
video icon Talk as video stream: https://youtu.be/1u6WmPACSs8  
slides icon Slides MOCPL04 [4.354 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL04  
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MOCPL05 ECMC, the Open Source Motion Control Package for EtherCAT Hardware at the ESS 71
 
  • T. Gahl, D.P. Brodrick, T. Bögershausen, O. Kirstein, T. Korhonen, D.P. Piso, A. Sandström
    ESS, Lund, Sweden
  
  In industry the open standard EtherCAT* is well established as a real-time fieldbus for largely distributed and synchronised systems. Open source solutions for the bus master have been first introduced in scientific installations by Diamond Light Source** and PSI using EtherCAT hardware for digital and analog I/Os. The European Spallation Source (ESS) decided to establish open source EtherCAT systems for mid-performance data acquisition and motion control on accelerator applications. In this contribution we present the motion control software package ECMC developed at the ESS using the open source Etherlab*** master to control the EtherCAT bus. The motion control interfaces with a model 3 driver to the EPICS motor record supporting it's functionalities like positioning, jogging, homing and soft/hard limits. Advanced functionalities supported by ECMC are full servo-loop feedback, a scripting language for custom synchronisation of different axes, virtual axes, externally triggered position capture and interlocking. On the example of prototyping a 2-axis wire scanner we show a fully EPICS integrated application of ECMC on different EtherCAT and CPU hardware platforms.
* http://www.ethercat.org
** R. Mercado, I. J. Gillingham, J. H. Rowland, K. Wilkinson "Integrating EtherCAT based IO into EPICS at Diamond." ICALEPCS 2011, Grenoble 2011
*** http://www.etherlab.org 		 
video icon Talk as video stream: https://youtu.be/SuQiKSMbfvs  
slides icon Slides MOCPL05 [1.081 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL05  
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MOCPL06 MARWIN: A Mobile Autonomous Robot for Maintenance and Inspection 76
 
  • A. Dehne, T. Hermes, N. Moeller
    hs21, Buxtehude, Germany
  • R. Bacher
    DESY, Hamburg, Germany
  
  MARWIN is a mobile autonomous robot platform designed for performing maintenance and inspection tasks alongside the European XFEL accelerator installation in operation in Hamburg, Germany. It consists of a 4-wheel drive chassis and a manipulator arm. Due to the unique Mecanum drive technology in combination with the manipulator arm the whole robot provides three degrees of freedom. MARWIN can be operated in a pre-configured autonomous as well as a remotely controlled mode. Its operation can be supervised through various cameras. The primary use case of MARWIN is measuring radiation fields. For this purpose MARWIN is equipped with both a mobile Geiger-Mueller tube mounted at the tip of the manipulator arm and a stationary multi-purpose radiation detector attached to the robot's chassis. This paper describes the mechanical and electrical setup of the existing prototype, the architecture and implementation of the controls routines, the strategy implemented to handle radiation-triggered malfunctions, and the energy management. In addition, it reports on recent operations experiences, envisaged improvements and further use cases.  
video icon Talk as video stream: https://youtu.be/SRnZSWMhgQg  
slides icon Slides MOCPL06 [27.173 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL06  
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MOCPL07 The Integrated Alarm System of the Alma Observatory 81
 
  • A. Caproni, E. Schmid
    ESO, Garching bei Muenchen, Germany
  
  ALMA is composed of many hardware and software systems each of which must be properly functioning to ensure the maximum efficiency. Operators in the control room, follow the operational state of the observatory by looking at a set of non-homogeneous panels. In case of problems, they have to find the reason by looking at the right panel, interpret the information and implement the counter-action that is time consuming so after an investigation, we started the development of an integrated alarm system that takes monitor point values and alarms from the monitored systems and presents alarms to operators in a coherent, efficient way. A monitored system has a hierarchical structure modeled with an acyclic graph whose nodes represent the components of the system. Each node digests monitor point values and alarms against a provided transfer function and sets its output as working or non nominal, taking into account the operational phase. The model can be mapped in a set of panels to increase operators' situation awareness and improve the efficiency of the facility.  
video icon Talk as video stream: https://youtu.be/HC-eOY97EME  
slides icon Slides MOCPL07 [2.428 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL07  
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TUMPA05 OPC UA to DOOCS Bridge: A Tool for Automated Integration of Industrial Devices Into the Accelerator Control Systems at FLASH and European XFEL 344
 
  • F. Peters, I. Hartl, C. Mohr, L. Winkelmann
    DESY, Hamburg, Germany
  
  Integrating off-the-shelf industrial devices into an accelerator control system often requires resource-consuming and error-prone software development to implement device-specific communication protocols. With recent progress in standards for industrial controls, more and more devices leverage the OPC UA machine-to-machine communication protocol to publish their functionality via an embedded information model. Here we present a generic DOOCS server, which uses a device's published OPC UA information model for automatic integration into the accelerator control systems of the FLASH and European XFEL free-electron laser facilities. The software makes all the device's variables and methods immediately accessible as DOOCS properties, reducing software development time and errors. We demonstrate that the server's and protocol's latency allows DOOCS-based burst-to-burst feedback in the 10Hz operation modes of FLASH and European XFEL and is capable of handling more than 104 data update events per second, without degrading performance. We also report on the successful integration of a commercial laser amplifier, as well as our own PLC-based laser protection system into DOOCS.  
slides icon Slides TUMPA05 [0.817 MB]  
poster icon Poster TUMPA05 [1.190 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA05  
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TUPHA126 The State Machine for the Accelerator System Working in the National Synchrotron Radiation Centre Solaris 706
 
  • P. Sagało, P.B. Borowiec, P. Bulira, Ł.J. Dudek, P. Galuszka, M.B. Jaglarz, K. Kedron, A. Kisiel, W.T. Kitka, A.M. Marendziak, T. Szymocha, A.I. Wawrzyniak, K. Wawrzyniak, J. Wikłacz
    Solaris National Synchrotron Radiation Centre, Jagiellonian University, Kraków, Poland
  
  A state in which accelerator system works at a given moment of time is determined by the state machine. The idea of the project has been based on FSM - finite state machine, in which each of the states is precisely determined by assigned specified operations on subsystem devices of the accelerator system such as e.g. magnets of storage rings, RF transmitters etc. To ensure high reliability, the main part of the project has been based on PLC - Programmable Logic Controller. StateMachine wich is a TangoClass has been written in Python using the facadedevice library, that allows information from the control system to be delivered to the PLC system. By using an universal Tango Class AllenBradleyEIP the state machine shering an informationa about accelerator system to the Tango control system. This information is archived in Cassandra database system by using the Tango HDB++ archiving system.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA126  
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TUPHA128 Using LabVIEW to Build Distributed Control System of a Particle Accelerator 714
 
  • V.V. Aleinikov, I.V. Borina, A.I. Krylov, K.P. Sychev
    JINR/FLNR, Moscow region, Russia
  • S. Pachtchenko
    JINR, Dubna, Moscow Region, Russia
  
  New isochronous cyclotron DC-280 is being created at the FLNR, JINR. Total amount of the process variables is about 4000. The variety of field devices of different types is 20. This paper describes architecture and basic principles of the distributed control system using LabVIEW DSC module.  
poster icon Poster TUPHA128 [2.255 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA128  
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TUPHA129 Motion Control System for the European Spallation Source Target Wheel 717
 
  • D.P. Brodrick, T. Gahl, B. Gallese, K. Jurisic, M. Larsson, U. Odén, A. Sandström, K. Sjögreen
    ESS, Lund, Sweden
  
  The European Spallation Source (ESS) linear accelerator will deliver high energy proton bunches to tungsten sectors on a rotating Target Wheel, which will produce neutrons through a nuclear process. The motion control system of the Target Wheel presents engineering challenges, such as: velocity and phase stability requirements to precisely align individual tungsten sectors with proton bunches from the accelerator; a high moment of inertia due to the composition and distribution of mass on the wheel; limitations on the physical space to integrate control components, and components for associated safety systems; and, some components being exposed to a high radiation environment. The motion control system being prototyped employs components that satisfy the constraints on the physical space and radiation environment. Precise velocity and phasing of the Target Wheel are achieved by generating a series of pulses as each tungsten sector passes a fiducial point in the rotational cycle, and implementing a motion control algorithm to correctly synchronise the Target Wheel with reference signals from the centralised ESS timing system, which also controls the timing of the accelerator.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA129  
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TUPHA130 Design and Development of the Control System for a Compact Carbon-14 AMS Facility 722
 
  • K.N. Li, Y.W. Bao, M. He, Y.M. Hu, S. Jiang, S.Y. Su, Q.B. You, J.M. Zhou
    CIAE, Beijing, People's Republic of China
  
  Funding: Beijing Science and Technology Committee
A compact AMS facility which is special used for further analyzing atmospheric pollution especially in north China via carbon-14 measurement was developed at CIAE (China Institute of Atomic Energy). This machine is a single acceleration stage AMS, running with the highest accelerate voltage of 200kV. The control system is based on distributed Ethernet control system, using standard TCP/IP protocol as main communication protocol. In order to connect to the main control network freely, device-level data-link layers were developed also. A LabVIEW client, developing virtual machine applied environment, provides friendly graphical user interface for the devices management and measurement data processing. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA130  
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TUPHA131 PLC Based Vacuum Controller Upgrade and Integration at the Argonne Tandem Linear Accelerator System 724
 
  • C.E. Peters, C. Dickerson, A.E. Germain, Y. Luo, M.A. Power, R.C. Vondrasek
    ANL, Argonne, Illinois, USA
  
  Funding: This work was supported by the U.S. Department of Energy, Contract No. DE-AC02-06CH11357. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility.
The installation of a new Electron Beam Ion Source (EBIS) to the Argonne Tandem Linear Accelerating System (ATLAS) at Argonne National Laboratory requires a vacuum system capable of providing pressures in the region of 10-10 Torr. Historically, vacuum interlocks have been provided via analog logic chassis which are difficult to upgrade and maintain. In order to provide sufficient interlocks to protect high voltage components of the EBIS, a new programmable logic controller (PLC) based Vacuum control system has been developed and integrated into the rest of the accelerator supervisory control system. The PLC interfaces not only with fast acting relay based interlock signals but also with RS-485 based serial devices to monitor and control lower priority parameters such as pump speeds, vacuum pressure readout and set points, run hours and more. This work presents the structure and interface logic necessary to communicate with a range of vacuum gauges, turbo-molecular pumps and ion pump controllers. In addition, the strategy to interface vacuum control with the rest of the accelerator control system is presented. 		 
poster icon Poster TUPHA131 [5.089 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA131  
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TUPHA132 Design and Implementation of Power Supply Control System on HI-13 728
 
  • J.M. Zhou, Y.M. Hu, K.N. Li, X.F. Wang
    CIAE, Beijing, People's Republic of China
  
  On the HI-13 tandem accelerator, steer power supply and quadrupole lens power supply provides three different types of control interface, Remote control system of these power supplies implemented by using Siemens S7 series PLC, serial server, OPC server and WINCC, Long-time operation show that the control system is easy to be operated and its performance is reliable. Keywords: HI-13, power supply control system, WINCC  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA132  
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TUPHA134 Do You Really Need a Low Current Amplifier to Drive a Low Current Motor? 730
 
  • O. Ivashkevych, A. Munoz, D. Poshka
    BNL, Upton, Long Island, New York, USA
  
  NSLS2 is standardized on Geo Brick LV Delta Tau 5A motor controller, suitable to drive majority of stepper and servo motors. Standardization allows less spare inventory and common skill set to maintain. However, some applications especially instruments in the space confined endstations require using small, or even miniature motors. The question that we address, what are the options in customizing the 5A unit for driving low current motors, and what are the limitations? In this paper, we present a quantitative comparison of drive currents and performance data collected with Delta Tau PeWin software and external test equipment for a variety of low current steppers and servomotors with and without encoders ranging from 45mA to 250mA. Delta Tau Geo Brick LV comes in different amplifier configurations: a combination of 5A, 1A, and 0.25A amplifiers. While all configurations are tested, research goal is focused on performance and limitations of 5A driver, avoiding using step and direction option with extra hardware. Performance of widely used Newport MFA-PP and MFA-CC also will be discussed.  
poster icon Poster TUPHA134 [1.071 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA134  
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TUPHA135 Online Simulation Framework Through HTTP Services 734
 
  • K.A. Brown, M. Harvey, Y.C. Jing, P. K. Kankiya, S. Seletskiy
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
The development of HTTP service interfaces* to the BNL Collider-Accelerator Department (C-AD) controls system opens up the ability to more quickly and easily adapt existing codes developed for other systems for use at RHIC. A simple particle accelerator online model built for commissioning the NSLS II** was adapted for use with the Low Energy RHIC electron Cooling project (LEReC)*** and the Coherent Electron Cooling (CeC)**** proof of principle experiment. For this project, a set of python modules and a python application were adapted for use in RHIC by replacing NSLS II control system interfaces with python modules that interface to the C-AD controls HTTP services. This paper will discuss the new interfaces and the status of commissioning them for operations.
* T. D'Ottavio, et al., these proceedings
** S. Seletskiy et al., TUPMA054, IPAC15, 2015.
*** A. Fedotov et al., WEA4CO05, NAPAC16, 2016.
**** V.N. Litvinenko et al., THPS009, IPAC11, 2011
 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA135  
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TUPHA139 ESRF Ramping Injector Power Supply Controlled by Tango 739
 
  • P.V. Verdier, R. Bourtembourg, J-F. B. Bouteille, P. Falaise, J.M. Koch
    ESRF, Grenoble, France
  
  A new design of ESRF booster power supply system has been developed and installed. A multiple power supplies control through network including real time control is now operational at ESRF. It manages 4 power supplies to generate 3 waveforms defined with 3x1600 values in a setpoint file. The power supplies states are managed by PLCs. The ramping waveforms are managed by a real time program running on a FPGA board. And a high level control on top of them is assumed by a TANGO multiple classes system. This paper presents how these three levels of controls are interlinked and show the results achieved  
poster icon Poster TUPHA139 [1.214 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA139  
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TUPHA141 Integration of Sample Environment Systems at ESS 741
 
  • A. Pettersson, D.P. Brodrick, T. Brys, M.A. Hartl
    ESS, Lund, Sweden
  
  The European Spallation Source ERIC (ESS) will consist of 22 different neutron instruments. Each instrument is able to use a large variety of devices to control the environment parameters of the sample during the experiments. Users must be able to control this equipment and the instruments as well as storing and retrieving experiment data. For this purpose, Experimental Physics and Industrial Control System (EPICS) will be used as the backbone control system. This work shows a typical use case where a Sample Environment System (SES) comprised by a Closed Cycle Refrigerator (CCR), spectrometer, temperature and pressure controller has been integrated into the ESS control system, from hardware to user interface.  
poster icon Poster TUPHA141 [9.247 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA141  
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TUPHA143 A Database to Store EPICS Configuration Data 745
 
  • M. Ritzert
    Heidelberg University, Heidelberg, Germany
  
  Funding: This work has been supported by the German Federal Ministry of Education and Research (BMBF).
The operation of extensive control systems cannot be performed by adjusting all parameters one by one manually. Instead, a set of parameters is loaded and applied in bulk. We present a system to store such parameter sets in a type-safe fashion into and retrieve them from a configuration database. The configuration database is backed by an SQL database. Interfaces to store and retrieve data exist for the C++, Java and Python programming languages. GUIs are available both as a standalone program using C++ and Qt, and integrated into Control System Studio (CSS). The version integrated into CSS supports data validators implemented as Eclipse plugins that are run before each commit. The format of the configuration data that can be stored is XML-like, and export and import to/from XML is implemented. The database can hold several completely independent "files" of configuration data. In each file, several branches can be stored, each branch consisting of a chain of commits. Each commit can easily be retrieved at any time. For each entry, the modification history can easily be queried.
For the DEPFET collaboration. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA143  
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TUPHA146 Interface Between EPICS and ADO 748
 
  • A. Sukhanov, J.P. Jamilkowski, A. Marusic
    BNL, Upton, Long Island, New York, USA
  
  Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department of Energy.
EPICS is widely used software infrastructure to control Particle Accelerators, its Channel Access (CA) network protocol for communication with Input/Output Controllers (IOCs) is easy to implement in hardware. Many vendors provide CA support for their devices. The RHIC Control System provides control of more than 400, 000 parameters through Accelerator Data Objects (ADO) software abstraction layer. In this paper we present software bridge, which allows to cross-communicate between ADO and EPICS devices. It consists of two separate programs: an ADO manager, which hosts the ADO parameters and executes caput() request to modify EPICS PV when parameter is changed; and an epics2ado program which monitors the EPICS PVs and notifies the ADO manager. This approach have been implemented in integration of the NSLSII PSC hardware interface into RHIC Controls System. 		 
poster icon Poster TUPHA146 [0.435 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA146  
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TUPHA148 Next Generation Control System Using the EtherCAT Technology 751
 
  • M. Ishii, Y. Ishizawa, M.T. Takeuchi
    JASRI/SPring-8, Hyogo-ken, Japan
  • T. Fukui
    RIKEN SPring-8 Center, Innovative Light Sources Division, Hyogo, Japan
  
  Toward the SPring-8 upgrade, which we call SPring-8-II, new innovative technologies are introduced at a control framework, a platform, and a fieldbus. We adopted EtherCAT having a master/slave topology as a network based fieldbus. Since a cyclic data transfer time is less than 1msec, EtherCAT can be provided enough performance for a fast control and a feedback system. Synchronization between slaves can be realized easily by the distributed clock technology. Controllers and sensors are set near equipment, and input and output data to/from a master via an Ethernet cable. It reduces the number of wires and the working time for wiring. In 2016, we installed EtherCAT into three types of equipment control systems. One was a prototype digital LLRF system in the high power rf test stand at SPring-8. Another was sub-encoder readout for an undulator at SPring-8. The other was a control system for a kicker magnet power supply at SACLA. An XMC typed EtherCAT Master module was implemented into each of these systems and connected to multi vendor slaves. In this paper, we report the status of new control system using the EtherCAT technology and future plan.  
poster icon Poster TUPHA148 [0.888 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA148  
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TUPHA149 MADOCA to EPICS Gateway 755
 
  • A. Kiyomichi, T. Masuda
    JASRI/SPring-8, Hyogo-ken, Japan
  
  MADOCA-to-EPICS gateway has been developed for easy and rapid integration of EPICS ready devices into MADOCA, the control software framework for SPring-8 and SACLA. MADOCA uses equipment control software called Equipment Manager (EM) in the device control layer. The MADOCA-to-EPICS gateway is implemented as a general-purpose EM to handle EPICS IOCs. The gateway consists of EM functions that interact with IOCs using Channel Access (CA) protocol corresponding to EPICS commands such as caget, caput and camonitor. We can build the gateway for the target EPICS device by editing the EM configuration file, without any programming. We have applied the gateway to the Libera Brilliance+ installed in the SPring-8 storage ring for the evaluation towards the SPring-8 upgrade project. In addition, it has been applied to the Libera Brilliance Single Pass and Spark installed in beam transport line, and the Libera Spark and Cavity installed in SACLA. The gateway brings us the benefits to minimize the installation time and effort even for the different platform (CPU and OS) devices. We will report on the development and advantage as well as the performance improvement of the MADOCA-to-EPICS gateway.  
poster icon Poster TUPHA149 [3.431 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA149  
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THPHA130 Control and Interlock Systems for the LIGHT Prototype 1683
 
  • R. Moser, M. Cerv, S. Magnoni, H. Pavetits, P. Paz Neira, K. Stachyra
    ADAM SA, Geneva, Switzerland
  
  LIGHT (Linac Image Guided Hadron Technology) is a particle therapy system* developed by Advanced Oncotherapy plc. Accelerator, control and interlock systems are developed by its subsidiary A.D.A.M.SA, a CERN spin-off. The system is being designed to accelerate protons up to 230 MeV using a modular and compact 25-meter-long linear accelerator. It is being designed to operate in pulsed mode where beam properties (energy, pulse charge and spot size) can be changed at 200 Hz. A proof-of-concept accelerator is being assembled and tested at CERN (Geneva, Switzerland). Control and interlock systems are developed using an exploratory prototyping approach and COTS hardware. Requirements for the final LIGHT control and interlock systems are iteratively clarified through creation and refinement of these prototypes. We will continue to support the proof-of-concept accelerator activities while starting to design the final LIGHT control and interlock systems in parallel, building upon the knowledge acquired with the proof-of-concept accelerator. The matured final LIGHT control and interlock systems will gradually replace the prototypes to automate procedures and test the system before deployment
* The LIGHT Proton Therapy System is still subject to conformity assessment by AVO's Notified Body as well as clearance by the USA-FDA 		 
poster icon Poster THPHA130 [7.669 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA130  
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THPHA132 Preliminary Scanning Integration at MAX IV Beamlines 1688
 
  • J.J. Jamróz, P.J. Bell, J. Lidón-Simon, P. Sjöblom, D.P. Spruce
    MAX IV Laboratory, Lund University, Lund, Sweden
  
  Funding: MAX IV Laboratory
The MAX IV Laboratory is in a stage where beamlines are starting to welcome users that will collect data utilizing various scanning methods. This paper focuses on the different motion and synchronization techniques, hardware integration, software solutions, data acquisition and experiment supervision at MAX IV beamlines. 		 
poster icon Poster THPHA132 [0.532 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA132  
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THPHA133 MicroTCA.4 Integration at ESS: From the Front-End Electronics to the EPICS OPI 1692
 
  • J.P.S. Martins, S. Farina, J.H. Lee, D.P. Piso
    ESS, Lund, Sweden
  
  The European Spallation Source (ESS) is a collaboration of 17 European countries that is building a leading neutron research center in Lund, Sweden. The ESS facility will have the most powerful neutron source in the world, providing 5 MW of beam power. The Integrated Control Systems Division (ICS) is responsible for all the control systems for the whole facility. For the accelerator control system, ICS will provide different hardware platforms according to the requirements of each specific system. For high performance systems, demanding high data throughput, the hardware platform is the MicroTCA.4 standard. This work presents the software stack that makes the integration of a high-end MicroTCA.4 hardware into the ESS Control System, with the implementation details of the FPGA firmware framework, kernel and userspace drivers, EPICS device support and finally the EPICS IOC that controls the MicroTCA.4 boards.  
poster icon Poster THPHA133 [2.193 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA133  
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THPHA134 Ground Vibration Monitoring at CERN as Part of the International Seismic Network 1695
 
  • C. Charrondière, M. Cabon, K. Develle, M. Guinchard
    CERN, Geneva, Switzerland
  
  The civil engineering activities in the framework of the High Luminosity LHC project, the Geneva GEothermie 2020 and the continuous monitoring of the LHC civil infrastructures triggered the need for the installation of a seismic network at CERN. A 24 bits data acquisition system has been deployed in 3 places at CERN: ATLAS, CMS and the Prévessin site. The system is sending all the raw data to the Swiss Seismological Service and performs FFT on the fly to be stored in the LHC database. The system has shown a good sensitivity of 10-16 (m/s)2/Hz at 1 Hz.  
poster icon Poster THPHA134 [2.775 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA134  
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THPHA135 Wall Current Monitor Using PXI and LabVIEW at CERN 1699
 
  • C. Charrondière, M. Delrieux, R. Limpens
    CERN, Geneva, Switzerland
  
  The new data acquisition system for the PS ring wall current monitors installed in the PS is able to perform higher frequency measurements of a beam bunch up to a frequency of 2.7 GHz. This is an important improvement, since the oscillating signal within the bandwidth 500-700 MHz, is related to losses of a beam bunch. The losses can be reduced by measuring the frequency and classifying the cause of the oscillations. The PXI-5661 is used to carry out spectral analysis of this signal. The acquisition is performed on a PXI running LabVIEW Real-Time and synchronized using a trigger from the accelerator timing system.  
poster icon Poster THPHA135 [2.390 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA135  
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THPHA137 Distributing Near Real Time Monitoring and Scheduling Data for Integration With Other Systems at Scale 1703
 
  • F. Joubert, M.J. Slabber
    SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa
  
  Funding: National Research Foundation (South Africa)
The MeerKAT radio telescope control system generates monitoring and scheduling data that internal and external systems require to operate. Distributing this data in near real-time, requires a scalable messaging strategy to ensure optimal performance regardless of the number of systems connected. Internal systems include the MeerKAT Graphical User Interfaces, the MeerKAT Science Data Processing subsystem and the MeerKAT Correlator Beamformer subsystem. External systems include Pulsar Timing User Supplied Equipment, MeerLICHT and the Search for Extraterrestrial Intelligence (SETI). Many more external systems are expected to join MeerKAT in the future. This paper describes the strategy adopted by the Control and Monitoring team to distribute near real-time monitoring and scheduling data at scale. This strategy is implemented using standard web technologies and the publish/subscribe design pattern. 		 
poster icon Poster THPHA137 [6.692 MB]  
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THPHA138 YCPSWASYN: EPICS Driver for FPGA Register Access and Asynchronous Messaging 1707
 
  • J.A. Vásquez, J.M. D'Ewart, K.H. Kim, T. Straumann, E. Williams
    SLAC, Menlo Park, California, USA
  
  The Linac Coherent Light Source II (LCLS-II) is a major upgrade of the LCLS facility at SLAC, scheduled to start operations in 2020. The High Performance Systems (HPS) defines a set of LCLS-II controls sub-systems which are directly impacted by its 1 MHz operation. It is formed around a few key concepts: ATCA based packaging, digital and analog application boards, and 10G Ethernet based interconnections for controls. The Common Platform provides the common parts of the HPS in term of hardware, firmware, and software. The Common Platform Software (CPSW) provides a standardized interface to the common platform's FPGA for all high-level software. YAML is used to define the hardware topology and all necessary parameters. YCPSWASYN is an asynPortDriver based EPICS module for FPGA register access and asynchronous messaging using CPSW. YCPSWSYN has two operation modes: an automatic mode where PVs are automatically created for all registers and the record's fields are populated with information found in YAML; and a manual mode where the engineer can choose which register to expose via PVs and freely choose the record's filed information.  
poster icon Poster THPHA138 [1.189 MB]  
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THPHA141 Design of the Front-End Detector Control System of the ATLAS New Small Wheels 1710
 
  • P.V. Moschovakos, A. Koulouris
    NTUA, Athens, Greece
  
  Funding: For the ATLAS Muon Collaboration
The foreseen upgrades of the LHC accelerator and the experiments will drastically increase the data and trigger rates. To cope with the vast and low latency data flow, the ATLAS small wheel muon detector will be replaced with a New Small Wheel. Among the upgrades needed, is a radiation tolerant Slow Control Adapter (GBT-SCA) ASIC dedicated for the on-detector control and monitoring. The ASIC employs various interfaces, making it flexible to match the needs of the different operations. On the backend, the Front-End Link eXchange system will be the interface between the data handling system and the detector front-end and trigger electronics. A dedicated slow control data component was developed as the middleware from FELIX to the end users. It is based on the OPC Unified Architecture protocol and it is comprised of an OPC-UA server, that will handle the slow control traffic from the control room to the GBT-SCA and vice versa. Ultimately, various scope-oriented OPC-UA clients, connected to the OPC-UA server, will be employed to configure and calibrate the ASICs, program the FPGAs, oversee the well-functioning of the boards and monitor the environmental parameters of the detector. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA141  
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THPHA142 The SKA Dish SPF and LMC Interaction Design: Interfaces, Simulation, Testing and Integration 1712
 
  • A. Marassi
    INAF-OAT, Trieste, Italy
  • J. Kotze, T.J. Steyn, C. van Niekerk
    EMSS Antennas, Stellenbosch, South Africa
  • S. Riggi, F. Schillirò
    INAF-OACT, Catania, Italy
  • G. Smit
    SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa
  
  The Square Kilometre Array (SKA) project is responsible for developing the SKA Observatory, the world's largest radio telescope ever built: eventually two arrays of radio antennas - SKA1-Mid and SKA1-Low - will be installed in the South Africa's Karoo region and Western Australia's Murchison Shire respectively, each covering a different range of radio frequencies. In particular, the SKA1-Mid array will comprise of 133 15m diameter dish antennas observing in the 350 MHz-14 GHz range, each locally managed by a Local Monitoring and Control (LMC) system and remotely orchestrated by the SKA Telescope Manager (TM) system. All control system functionality run on the Tango Controls platform. The Dish Single Pixel Feed (SPF) work element will design the combination of feed elements, orthomode transducers (OMTs), and low noise amplifiers (LNAs) that receive the astronomical radio signals. Some SPFs have cryogenically cooled chambers to obtain the sensitivity requirements. This paper gives a status update of the SKA Dish SPF and LMC interaction design, focusing on SPF, LMC simulators and engineering/operational user interfaces, prototypes being developed and technological choices.  
poster icon Poster THPHA142 [0.321 MB]  
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THPHA143 Synchronous Motion with S7-1500 PLCs in Neutron Instruments 1716
 
  • H. Kleines
    FZJ, Jülich, Germany
  
  Control systems of neutron instruments are responsible for the movement of a variety of mechanical axes. In the TANGO based control systems developed by Forschungszentrum Jülich for neutron instruments, Siemens S7-300 PLCs with single axis stepper motor controllers from Siemens or Phytron have been used for this purpose in the past. Synchronous coordinated movement of several axes has been implemented with dedicated 4-axes NC modules (FM357) for the S7-300. In future, the recent S7-1500 PLC family shall be used for motion tasks. With the S7-1500, stepper motor control is possible with low-cost fast digital outputs, so called PTOs (pulse trade outputs). The integrated motion functions of the S7-1500 directly support synchronous movement. The function block interface defined by PLCopen serves as a homogeneous programming interface which is independent of a specific motion controller. For the single crystal diffractometer HEiDi at the research reactor FRM-II a replacement for a S7-300 with FM357 has been implemented based on a S7-1500 PLCs and a PTO module.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA143  
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THPHA144 Industrial Stepping Motors Integration in the UNICOS-CPC Framework 1720
 
  • J. Fernandez Cortes, E. Blanco Viñuela, L.A. Gonzalez
    CERN, Geneva, Switzerland
  
  A large number of movable devices are present in the field of accelerators and must often be integrated in a control system. Typical examples of these systems are phase shifters and magnetic dipoles among others. The standard industrial control system UNICOS-CPC (UNified Industrial COntrol System for Continuous Process Control) provides a set of generic device types which matches the majority of the industrial equipment employed in process control. This new development extends it with additional device types for precise positioning equipment based on stepping motors. The paper focuses on how the integration on UNICOS was fulfilled, the potential use of the solution and the automatic integration with the CERN real-time FESA (FrontEnd Software Architecture) framework. Finally, it illustrates a couple of use cases that already incorporate the solution: the CTF3 facility, the two-beam acceleration scheme envisioned for CLIC (Compact Linear Collider) and the EuroCirCol project for the measurements of the beam screen prototype for the FCC-hh (Future Circular Collider proton-proton).  
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THPHA145 Integration of PLC and PXI Control Systems 1725
 
  • A. Antoine, C. Boucly, T. Gharsa
    CERN, Geneva, Switzerland
  
  Engineers are often challenged with the need to integrate several technologies to find optimal solutions when designing new control architectures. Generally, the technical solutions chosen require the combination of various industrial products such as PXI systems for applications requiring fast acquisition, analysis and reaction times, while PLCs are commonly used for their reliability and their ability to withstand industrial environments. The needs to exchange information between these different technologies can today be solved by using industrial fieldbuses such as Profibus DP or Profinet IO. This paper describes the technical aspects of the two options, focussing on their advantages and constraints. The experience gained with integrating PXI and PLC systems as part of the 2016 consolidation project of the control of the kicker systems of the Antiproton Decelerator (AD) at CERN will be presented.  
poster icon Poster THPHA145 [1.559 MB]  
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THPHA146 LCLS-II Cryomodule and Cryogenic Distribution Control 1729
 
  • K.J. Mattison, M. Boyes, C. Cyterski, D. Fairley, B. Lam
    SLAC, Menlo Park, California, USA
  • C. Hovater
    JLab, Newport News, Virginia, USA
  • J.A. Kaluzny, A. Martinez
    Fermilab, Batavia, Illinois, USA
  
  LCLS-II is a superconducting upgrade to the existing Linear Coherent Light Source at the SLAC National Accelerator Laboratory. Construction is underway with a planned continuous wave beam rate of up to 1 MHz. Two cryogenic plants provide helium to a distribution system, and 37 cryomodules with superconducting cavities will operate with Liquid helium at 2.2K. The cryomodules and distribution system is controlled with networked PLC's and EPICS as an integrated system that work in concert for controlling valves, pressure, flow, and temperature. Interlocks and critical process information is communicated with the Low Level Radio Frequency, vacuum, and magnet systems. Engaging the controls community proved vital in advancing the controls architecture from a conventional design to a centralized, reliable, and cost-effective distributed platform.  
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THPHA147 Conceptual Design of Vacuum Control System for ILSF 1732
 
  • A. Khalilzadeh, M. Akbari, M. Jafarzadeh, J. Rahighi
    ILSF, Tehran, Iran
  
  Funding: ILSF
The Iranian Light Source Facility (ILSF) is a new 3 GeV third generation synchrotron light source facility with circumference of 528 m, which is in the design stage. In this paper conceptual design of vacuum control system is presented. The control system architecture, Software toolkit and controller in device layer are discussed in this paper. 		 
poster icon Poster THPHA147 [2.578 MB]  
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THPHA148 Conceptual Design of Power Supply Control System for ILSF 1734
 
  • A. Bayramiyan, M. Akbari, M. Jafarzadeh, A. Khalilzadeh, J. Rahighi, E.H. Yousefi
    ILSF, Tehran, Iran
  
  The Iranian Light Source Facility which is currently under design is a new 3 GeV third generation synchrotron light source. The storage ring circumference is 538 m. The conceptual design of power supply control system is presented in this paper which contain control system architecture, software toolkit and controller in device layer of the power supply.  
poster icon Poster THPHA148 [2.443 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA148  
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THPHA149 Software and Gateware Development for Sirius BPM Electronics Using a Service-Oriented Architecture 1736
 
  • L.M. Russo
    LNLS, Campinas, Brazil
  
  The Brazilian Synchrotron Light Laboratory (LNLS) is in the final stages of developing an open-source BPM system for Sirius, a 4th-generation synchrotron light source under construction in Brazil. The system is based on the MicroTCA.4 standard comprising AMC FPGA boards carrying FMC digitizers and a CPU module. The software is built with the HALCS framework [1] and employs a service- oriented architecture (SOA) to export a flexible interface between the gateware modules and its clients, providing a set of loosely-coupled components favoring reusability, extensibility and maintainability. In this paper, the BPM system will be discussed in detail focusing on how specific functionalities of the system are integrated and developed in the framework to provide SOA services. In particular, two domains will be covered: (i) gateware modules, such as the ADC interface, acquisition engine and digital signal processing; (ii) software services counterparts, showing how these modules can interact with each other in a uniform way, easing integration with control systems.
[1] L.M. Russo, J.V. Ferreira Filho, "Gateware and Software Frameworks for Sirius BPM Electronics", PCaPAC16, paper THDAPLCO03. 		 
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THPHA150 Introducing Fast Interlocks in the UNICOS-CPC Framework 1742
 
  • J.O. Ortola Vidal, E. Blanco Viñuela, M. Vazquez Muñiz
    CERN, Geneva, Switzerland
  
  The CERN UNified Industrial COntrol System framework (UNICOS) with its Continuous Control Package (UNICOS-CPC) is the CERN standard solution for the design and implementation of continuous industrial process control applications. The need of adapting the framework capabilities to the different processes at CERN has brought new challenges. Reacting as fast as possible to an interlock situation to protect equipment is a new requirement which has been introduced in UNICOS-CPC. This paper present the challenges, design and test results of the seamless integration of fast interlocks capabilities in the current UNICOS-CPC package based on conventional PLCs (Programmable Logic Controllers), with a heightened level of flexibility and maturity. The first implementation is employing SIEMENS PLCs but the underlying technique is extensible to the other UNICOS-CPC compliant platforms.  
poster icon Poster THPHA150 [0.428 MB]  
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THPHA151 MARS: Easing Maintenance and Interventions for CERN Controls 1748
 
  • F. Varela, U. Epting, M. Gonzalez Corral, E. Mandilara, S. Podgorski
    CERN, Geneva, Switzerland
  
  Industrial control systems for the CERN technical infrastructure and accelerator complex consist of a myriad of devices and components geographically distributed around the CERN facilities. In the event of an intervention in such systems, the on-call engineer or the system expert needs detailed information about the nature of the problem, e.g. what device, what problem, intervention procedures, and contextual data like the location of the device, current access conditions to this place, the list of access rights required and whether he/she is granted with these rights. This is of special relevance when the person responsible for the intervention has only limited knowledge of the control system as it is the case for some on-call services. At CERN, this information is scattered over a number of data sources. This paper presents MARS, a web-based tool designed to federate data from heterogeneous sources with the aim of providing support for interventions and maintenance activities. The information can be displayed in a single web page or be accessed through a REST API.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA151  
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THPHA214 Rapid Control Prototyping Tool for the Sirius High-Dynamic DCM Control System 1941
 
  • G.B.Z.L. Moreno, R.M. Caliari, R.R. Geraldes, M.A.L. Moraes
    LNLS, Campinas, Brazil
  
  Funding: The authors would like to gratefully acknowledge the funding by the Brazilian Ministry of Science, Technology, Innovation and Communication.
The monochromator is known to be one of the most critical optical elements of a synchrotron beamline. It directly affects the beam quality with respect to energy and position, demanding high stability performance and fine position control. The new high-dynamic double-crystal monochromator (HD-DCM) [1], prototyped at the Brazilian Synchrotron Light Laboratory (LNLS), was designed for the future X-ray undulator and superbend beamlines of Sirius, the new Brazilian 4th generation synchrotron [2]. At this kind of machine, the demand for stability is even higher and conflicts with factors such as high-power loads, power load variation, and vibration sources. To identify and ensure sufficient control of the dynamic behaviour of all subcomponents in the proto-type, an implementation in MATLAB/Simulink Real-Time environment in a Speedgoat Real-Time Perfor-mance Machine was developed. This approach enables rapid prototyping, by allowing a shared environment for system modeling and testing. The tool was developed in a modular architecture aiming at practical model itera-tion and platform migration to standard beamline con-trollers, which can prove portability and scalability fea-tures.
[*]R. R. Geraldes et. al., 'Método de controle de grau de liberdade em sistemas mecatrÃ’nicos e monocromador de duplo cristal'
[**]A. R. D. Rodrigues et al., 'Sirius Status Report' 		 
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THSH201 Integration of MeerKAT and SKA Telescopes using KATCP/Tango Translators 1964
 
  • K. Madisa, N. Marais, A.J.T. Ramaila, L. Van den Heever
    SKA South Africa, National Research Foundation of South Africa, Cape Town, South Africa
  
  Funding: National Research Foundation of South Africa
The MeerKAT radio telescope control system uses the KATCP protocol and technology stack developed at SKA SA. The future SKA project chose the TANGO controls technology stack. However, MeerKAT and phase 1 of the SKA-mid telescope are intimately related: SKA-mid will be co-located with MeerKAT at the SKA SA Karoo site; the first SKA-mid prototype dishes will be tested using MeerKAT systems; MeerKAT will later be incorporated into SKA-mid. To aid this interoperation, TANGO to KATCP and KATCP to TANGO translators were developed. A translator process connects to a device server of protocol A, inspects it and exposes an equivalent device server of protocol B. Client interactions with the translator are proxied to the real device. The translators are generic, needing no device-specific configuration. While KATCP and TANGO share many concepts, differences in representation fundamentally limits the abilities of a generic translator. Experience integrating TANGO devices into the MeerKAT and of exposing MeerKAT KATCP interfaces to TANGO based tools are presented. The limits of generic translation and strategies for handling complete use cases are discussed. 		 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THSH201  
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THSH203 Internet of Things (IoT): Wireless Diagnostics Solutions 1975
 
  • R. Homs-Puron, S. Astorga, G. Cuní, D. Fernández-Carreiras, O. Matilla, A. Rubio
    ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
  • R. Montaño
    ESS, Lund, Sweden
  
  ALBA requires a diagnostic system, where mainly include the temperature acquisition around the facility, such as tunnel, service area, experimental area, laboratories and auxiliary facilities. There is a big area to be covered and the location of the sensors may not be fixed, those measurement spots require a strong correlation to the machine startup configuration. This has an impact on the size whether a traditional wired installation is used, due the huge of measurement points to be covered; in addition, the restricted machine access schedule makes difficult their installation. In this paper we intend to describe one solution based on ESP8266 system-on-a-chip (SoC).  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THSH203  
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