Paper | Title | Other Keywords | Page |
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MOCOBAB04 | The Advanced Radiographic Capability, a Major Upgrade of the Computer Controls for the National Ignition Facility | controls, software, laser, operation | 39 |
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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. #LLNL-ABS-633793 The Advanced Radiographic Capability (ARC) currently under development for the National Ignition Facility (NIF) will provide short (1-50 picoseconds) ultra high power (>1 Petawatt) laser pulses used for a variety of diagnostic purposes on NIF ranging from a high energy x-ray pulse source for backlighter imaging to an experimental platform for fast-ignition. A single NIF Quad (4 beams) is being upgraded to support experimentally driven, autonomous operations using either ARC or existing NIF pulses. Using its own seed oscillator, ARC generates short, wide bandwidth pulses that propagate down the existing NIF beamlines for amplification before being redirected through large aperture gratings that perform chirped pulse compression, generating a series of high-intensity pulses within the target chamber. This significant effort to integrate the ARC adds 40% additional control points to the existing NIF Quad and will be deployed in several phases over the coming year. This talk discusses some new unique ARC software controls used for short pulse operation on NIF and integration techniques being used to expedite deployment of this new diagnostic. |
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Slides MOCOBAB04 [3.279 MB] | ||
MOCOBAB06 | Integrated Monitoring and Control Specification Environment | controls, framework, EPICS, interface | 47 |
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Monitoring and control solutions for large one-off systems are typically built in silos using multiple tools and technologies. Functionality such as data processing logic, alarm handling, UIs, device drivers are implemented by manually writing configuration code in isolation and their cross dependencies maintained manually. The correctness of the created specification is checked using manually written test cases. Non-functional requirements – such as reliability, performance, availability, reusability and so on – are addressed in ad hoc manner. This hinders evolution of systems with long lifetimes. For ITER, we developed an integrated specifications environment and a set of tools to generate configurations for target execution platforms, along with required glue to realize the entire M&C solution. The SKA is an opportunity to enhance this framework further to include checking for functional and engineering properties of the solution based on domain best practices. The framework includes three levels: domain-specific, problem-specific and target technology-specific. We discuss how this approach can address three major facets of complexity: scale, diversity and evolution. | |||
MOMIB06 | Personnel Protection of the CERN SPS North Hall in Fixed Target Primary Ion Mode | ion, proton, extraction, PLC | 66 |
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While CERN's Super Proton Synchrotron (SPS) is able to deliver both secondary proton and primary ion beams to fixed targets in the North Area, the experimental areas (North Hall) are widely accessible during beam. In ion mode all normal safety elements involved in producing secondary beams are removed, so that an accidental extraction of a high-intensity proton beam into the North Hall would expose personnel present there to a radiation hazard. This has required an injector reconfiguration restricting operation to either ions or protons. However, demands for operational flexibility of CERN accelerators have led to a need to mix within the same SPS super-cycle both high-intensity proton cycles for LHC or HiRadMat and ion cycles for the North Area. We present an active interlock designed to mitigate this hazard: Beam Current Transformers are used to measure the level of beam intensity, and if above a set threshold, pulsing of the extraction septa is vetoed. The safety function is implemented by means of two logically equivalent but diverse and separate interlock chains. This interlock is expected to be in place once the SPS resumes operation after the first Long Shutdown in 2014. | |||
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Slides MOMIB06 [0.236 MB] | ||
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Poster MOMIB06 [4.250 MB] | ||
MOPPC022 | Remote Control of Heterogeneous Sensors for 3D LHC Collimator Alignment | PLC, controls, alignment, LabView | 103 |
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Periodically the alignment of LHC collimators needs to be verified. Access for personnel is limited due to the level of radiation close to the collimators. The required measurements precision must be comparable to the other equipment in the LHC tunnel, meaning 0.15 mm in a sliding window of 200 m. Hence conventional measurements would take 4 days for a team of 3 people. This presentation covers the design, development and commissioning of a remotely controlled system able performs the same measurements in 1 h with one operator. The system includes the integration of a variety of industrial devices ranging from position sensors, inclination sensors to video cameras, all linked to a PXI system running LabVIEW. The control of the motors is done through a PLC based system. The overall performance and user experience are reported. | |||
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Poster MOPPC022 [19.665 MB] | ||
MOPPC041 | Machine Protection System for TRIUMF's ARIEL Facility | controls, TRIUMF, electron, operation | 175 |
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Phase 1 of the Advanced Rare Isotope & Electron Linac (ARIEL) facility at TRIUMF is scheduled for completion in 2014. It will utilize an electron linear accelerator (eLinac) capable of currents up to 10mA and energy up to 75MeV. The eLinac will provide CW as well as pulsed beams with durations as short as 10uS. A Machine Protection System (MPS) will protect the accelerator and the associated beamline equipment from the nominal 500kW beam. Hazardous situations require the beam to be extinguished at the electron gun within 10uS of detection. Beam loss accounting is an additional requirement of the MPS. The MPS consists of an FPGA based controller module, Beam Loss Monitor VME modules developed by JLAB, and EPICS -based controls to establish and enforce beam operating modes. This paper describes the design, architecture, and implementation of the MPS. | |||
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Poster MOPPC041 [1.345 MB] | ||
MOPPC042 | Machine Protection System for the SPIRAL2 Facility | controls, beam-losses, PLC, diagnostics | 178 |
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The phase 1 of the SPIRAL2 facility, the extension project of the GANIL laboratory, is under construction in Caen, France. The accelerator is based on a linear solution, mainly composed of a normal conducting RFQ and a superconducting linac. One of its specificities is to be designed to accelerate high power deuteron and heavy ion beams from 40 to 200kW, and medium intensity heavy ion beams as well to a few kW. A Machine Protection System, has been studied to control and protect the accelerator from thermal damages for a very large range of beam intensities and powers. This paper presents the technical solutions chosen for this system which is based on two technical subsystems: one dedicated to thermal protection which requires a first PLC associated with a fast electronic system and a second dedicated to enlarged protection which is based on a safety products. | |||
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Poster MOPPC042 [2.220 MB] | ||
MOPPC045 | Cilex-Apollon Synchronization and Security System | laser, TANGO, distributed, software | 188 |
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Funding: CNRS, MESR, CG91, CRiDF, ANR Cilex-Apollon is a high intensity laser facility delivering at least 5 PW pulses on targets at one shot per minute, to study physics such as laser plasma electron or ion accelerator and laser plasma X-Ray sources. Under construction, Apollon is a four beam laser installation with two target areas. Apollon control system is based on Tango. The Synchronization and Security System (SSS) is the heart of this control system and has two main functions. First one is to deliver triggering signals to lasers sources and diagnostics and the second one is to ensure machine protection to guarantee optic components integrity by avoiding damages caused by abnormal operational modes. The SSS is composed of two distributed systems. Machine protection system is based on a distributed I/O system running a Labview real time application and the synchronization part is based on the distributed Greenfield Technology system. The SSS also delivers shots to the experiment areas through programmed sequences. The SSS are interfaced to Tango bus. The article presents the architecture, functionality, interfaces to others processes, performances and feedback from a first deployment on a demonstrator. |
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Poster MOPPC045 [1.207 MB] | ||
MOPPC084 | ESS Integrated Control System and the Agile Methodology | controls, software, feedback, neutron | 296 |
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The stakeholders of the ESS Integrated Control System (ICS) reside in four parts of the ESS machine: accelerator, target, neutron instruments and conventional facilities. ICS plans to meet the stakeholders’ needs early in the Construction phase, to accelerate and facilitate the Commissioning process by providing and delivering required tools earlier. This introduces the risk that stakeholders will not have had the full set of information required available early enough for the development of the interfacing systems (e.g. missing requirements, undecided design etc.) In order for ICS to accomplish its objectives it is needed to establish a development process that allows a quick adaptation to any change in the requirements with a minimum impact in the execution of the projects. Agile Methodology is well known for its ability to adapt quickly to change, as well as for involving users in the development process and producing working and reliable software from a very early stage in the project. The paper will present the plans, the tools, the organization of the team and the preliminary results of the setup work. | |||
MOPPC138 | Continuous Integration for Automated Code Generation Tools | controls, software, framework, PLC | 431 |
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The UNICOS* (UNified Industrial COntrol System) framework was created back in 1998 as a solution to build object-based industry-like control systems. The Continuous Process Control package (CPC**) is a UNICOS component that provides a methodology and a set of tools to design and implement industrial control applications. UAB** (UNICOS Application Builder) is the software factory used to develop UNICOS-CPC applications. The constant evolution of the CPC component brought the necessity of creating a new tool to validate the generated applications and to verify that the modifications introduced in the software tools do not create any undesirable effect on the existing control applications. The uab-maven-plugin is a plug-in for the Apache Maven build manager that can be used to trigger the generation of the CPC applications and verify the consistency of the generated code. This plug-in can be integrated in continuous integration tools - like Hudson or Jenkins – to create jobs for constant monitoring of changes in the software that will trigger a new generation of all the applications located in the source code management.
* "UNICOS a framework to build industry like control systems: Principles & Methodology". ** "UNICOS CPC6: Automated code generation for process control applications". |
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Poster MOPPC138 [4.420 MB] | ||
MOPPC148 | Not Dead Yet: Recent Enhancements and Future Plans for EPICS Version 3 | EPICS, software, controls, Linux | 457 |
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Funding: Work supported by U.S. Department of Energy, Office of Science, under Contract No. DE-AC02-06CH11357. The EPICS Version 4 development effort* is not planning to replace the current Version 3 IOC Database or its use of the Channel Access network protocol in the near future. Interoperability is a key aim of the V4 development, which is building upon the older IOC implementation. EPICS V3 continues to gain new features and functionality on its Version 3.15 development branch, while the Version 3.14 stable branch has been accumulating minor tweaks, bug fixes, and support for new and updated operating systems. This paper describes the main enhancements provided by recent and upcoming releases of EPICS Version 3 for control system applications. * Korhonen et al, "EPICS Version 4 Progress Report", this conference. |
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Poster MOPPC148 [5.067 MB] | ||
MOPPC157 | Application of Transparent Proxy Servers in Control Systems | controls, operation, framework, collider | 475 |
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Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Proxy servers (Proxies) have been a staple of the World Wide Web infrastructure since its humble beginning. They provide a number of valuable functional services like access control, caching or logging. Historically, controls system have had little need for full fledged proxied systems as direct, unimpeded resource access is almost always preferable. This still holds true today, however unbound direct asset access can lead to performance issues, especially on older, underpowered systems. This paper describes an implementation of a fully transparent proxy server used to moderate asynchronous data flow between selected front end computers (FECs) and their clients as well as infrastructure changes required to accommodate this new platform. Finally it ventures into the future by examining additional untapped benefits of proxied control systems like write-through caching and runtime read-write modifications. |
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Poster MOPPC157 [1.873 MB] | ||
TUCOAAB01 | Status of the National Ignition Facility (NIF) Integrated Computer Control and Information Systems | controls, diagnostics, laser, software | 483 |
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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. #LLNL-ABS-631632 The National Ignition Facility (NIF) is operated by the Integrated Computer Control System in an object-oriented, CORBA-based system distributed among over 1800 front-end processors, embedded controllers and supervisory servers. At present, NIF operates 24x7 and conducts a variety of fusion, high energy density and basic science experiments. During the past year, the control system was expanded to include a variety of new diagnostic systems, and programmable laser beam shaping and parallel shot automation for more efficient shot operations. The system is also currently being expanded with an Advanced Radiographic Capability, which will provide short (<10 picoseconds) ultra-high power (>1 Petawatt) laser pulses that will be used for a variety of diagnostic and experimental capabilities. Additional tools have been developed to support experimental planning, experimental setup, facility configuration and post shot analysis, using open-source software, commercial workflow tools, database and messaging technologies. This talk discusses the current status of the control and information systems to support a wide variety of experiments being conducted on NIF including ignition experiments. |
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Slides TUCOAAB01 [4.087 MB] | ||
TUCOAAB02 | The Laser Megajoule Facility: Control System Status Report | controls, laser, software, alignment | 487 |
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The French Commissariat à l’Énergie Atomique (CEA) is currently building the Laser Megajoule (LMJ), a 176-beam laser facility, at the CEA Laboratory CESTA near Bordeaux. It is designed to deliver about 1.4 MJ of energy to targets for high energy density physics experiments, including fusion experiments. The assembly of the first lines of amplification is almost achieved and functional tests are planed for next year. The first part of the presentation is a photo album of the progress of the assembly of the bundles in the four laser bay, and the equipements in the target bay. The second part of the presentation illustrates a particularity of the LMJ commissioning: a secondary control room is dedicated to successive bundles commissioning, while the main control room allows shots and fusion experiments with already commissioned bundles | |||
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Slides TUCOAAB02 [3.928 MB] | ||
TUPPC072 | Flexible Data Driven Experimental Data Analysis at the National Ignition Facility | data-analysis, diagnostics, software, framework | 747 |
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Funding: This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-632532 After each target shot at the National Ignition Facility (NIF), scientists require data analysis within 30 minutes from ~50 diagnostic instrument systems. To meet this goal, NIF engineers created the Shot Data Analysis (SDA) Engine based on the Oracle Business Process Execution Language (BPEL) platform. While this provided for a very powerful and flexible analysis product, it still required engineers conversant in software development practices in order to create the configurations executed by the SDA engine. As more and more diagnostics were developed and the demand for analysis increased, the development staff was not able to keep pace. To solve this problem, the Data Systems team took the approach of creating a database table based scripting language that allows users to define an analysis configuration of inputs, input the data into standard processing algorithms and then store the outputs in a database. The creation of the Data Driven Engine (DDE) has substantially decreased the development time for new analysis and simplified maintenance of existing configurations. The architecture and functionality of the Data Driven Engine will be presented along with examples. |
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Poster TUPPC072 [1.150 MB] | ||
TUPPC073 | National Ignition Facility (NIF) Dilation X-ray Imager (DIXI) Diagnostic Instrumentation and Control System | diagnostics, timing, controls, instrumentation | 751 |
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Funding: * This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-633832 X-ray cameras on inertial confinement fusion facilities can determine the implosion velocity and symmetry of NIF targets by recording the emission of X-rays from the target gated as a function of time. To capture targets that undergo ignition and thermonuclear burn, however, cameras with less than 10 picosecond shutter times are needed. A Collaboration between LLNL, General Atomics and Kentech Instruments has resulted in the design and construction of an X-ray camera which converts an X-ray image to an electron image, which is stretched, and then coupled to a conventional shuttered electron camera to meet this criteria. This talk discusses target diagnostic instrumentation and software used to control the DIXI diagnostic and seamlessly integrate it into the National Ignition Facility (NIF) Integrated Computer Control System (ICCS). |
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Poster TUPPC073 [3.443 MB] | ||
TUPPC077 | Experiment Automation with a Robot Arm Using the Liquids Reflectometer Instrument at the Spallation Neutron Source | neutron, alignment, controls, experiment | 759 |
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Funding: U.S. Government under contract DE-AC05-00OR22725 with UT-Battelle, LLC, which manages the Oak Ridge National Laboratory. The Liquids Reflectometer instrument installed at the Spallation Neutron Source (SNS) enables observations of chemical kinetics, solid-state reactions and phase-transitions of thin film materials at both solid and liquid surfaces. Effective measurement of these behaviors requires each sample to be calibrated dynamically using the neutron beam and the data acquisition system in a feedback loop. Since the SNS is an intense neutron source, the time needed to perform the measurement can be the same as the alignment process, leading to a labor-intensive operation that is exhausting to users. An update to the instrument control system, completed in March 2013, implemented the key features of automated sample alignment and robot-driven sample management, allowing for unattended operation over extended periods, lasting as long as 20 hours. We present a case study of the effort, detailing the mechanical, electrical and software modifications that were made as well as the lessons learned during the integration, verification and testing process. |
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Poster TUPPC077 [17.799 MB] | ||
TUPPC081 | IcePAP: An Advanced Motor Controller for Scientific Applications in Large User Facilities | controls, hardware, software, interface | 766 |
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Synchrotron radiation facilities and in particular large hard X-ray sources such as the ESRF are equipped with thousands of motorized position actuators. Combining all the functional needs found in those facilities with the implications related to personnel resources, expertise and cost makes the choice of motor controllers a strategic matter. Most of the large facilities adopt strategies based on the use of off-the-shelf devices packaged using standard interfaces. As this approach implies severe compromises, the ESRF decided to address the development of IcePAP, a motor controller designed for applications in a scientific environment. It optimizes functionality, performance, ease of deployment, level of standardization and cost. This device is adopted as standard and is widely used at the beamlines and accelerators of ESRF and ALBA. This paper provides details on the architecture and technical characteristics of IcePAP as well as examples on how it implements advanced features. It also presents ongoing and foreseen improvements as well as introduces the outline of an emerging collaboration aimed at further development of the system making it available to other research labs. | |||
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Poster TUPPC081 [0.615 MB] | ||
TUPPC094 | Em# Project. Improvement of Low Current Measurements at Alba Synchrotron | controls, FPGA, hardware, feedback | 798 |
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After two years with 50 four-channels electrometer measurement units working successfully at Alba beamlines, new features implementation have forced a complete instrument architecture change. This new equipment is taking advantage of the targets achieved as the remarkable low noise in the current amplifier stage and implements new features currently not available in the market. First an embedded 18 bits SAR ADC able to work under up to 500V biasing has been implemented looking for the highest possible accuracy. The data stream is analysed by a flexible data processing based on a FPGA which is able to execute sample-by-sample real-time calculation aimed to be applied in experiments as the current normalization absorption between two channel acquisitions; being able to optimize the SNR of an absorption spectrum. The equipment is oriented from the design stage to be integrated in continuous scans setups, implementing low level timestamp compatible with multiple clock sources standards using an SFP port. This port could also be used in the future to integrate XBPM measures into the FOFB network for the accelerator beam position correction. | |||
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Poster TUPPC094 [0.545 MB] | ||
TUPPC109 | MacspeechX.py Module and Its Use in an Accelerator Control System | controls, hardware, software, interface | 829 |
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macspeechX.py is a Python module to accels speech systehsis library on MacOSX. This module have been used in the vocal alert system in KEKB and J-PARC accelrator cotrol system. Recent upgrade of this module allow us to handle non-English lanugage, such as Japanse, through this module. Implementation detail will be presented as an example of Python program accessing system library. | |||
TUPPC126 | Visualization of Experimental Data at the National Ignition Facility | diagnostics, software, framework, database | 879 |
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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. #LLNL-ABS-633252 An experiment on the National Ignition Facility (NIF) may produce hundreds of gigabytes of target diagnostic data. Raw and analyzed data are accumulated into the NIF Archive database. The Shot Data Systems team provides alternatives for accessing data including a web-based data visualization tool, a virtual file system for programmatic data access, a macro language for data integration, and a Wiki to support collaboration. The data visualization application in particular adapts dashboard user-interface design patterns popularized by the business intelligence software community. The dashboard canvas provides the ability to rapidly assemble tailored views of data directly from the NIF archive. This design has proven capable of satisfying most new visualization requirements in near real-time. The separate file system and macro feature-set support direct data access from a scientist’s computer using scientific languages such as IDL, Matlab and Mathematica. Underlying all these capabilities is a shared set of web services that provide APIs and transformation routines to the NIF Archive. The overall software architecture will be presented with an emphasis on data visualization. |
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Poster TUPPC126 [4.900 MB] | ||
TUPPC128 | Machine History Viewer for the Integrated Computer Control System of the National Ignition Facility | controls, GUI, software, database | 883 |
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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. #LLNL-ABS-633812 The Machine History Viewer is a recently developed capability of the Integrated Computer Control System (ICCS) software to the National Ignition Facility (NIF) that introduces the capability to analyze machine history data to troubleshoot equipment problems and to predict future failures. Flexible time correlation, text annotations, and multiple y-axis scales will help users determine cause and effect in the complex machine interactions at work in the NIF. Report criteria can be saved for easy modification and reuse. Integration into the already-familiar ICCS GUIs makes reporting easy to access for the operators. Reports can be created that will help analyze trends over long periods of time that lead to improved calibration and better detection of equipment failures. Faster identification of current failures and anticipation of potential failures will improve NIF availability and shot efficiency. A standalone version of this application is under development that will provide users remote access to real-time data and analysis allowing troubleshooting by experts without requiring them to come on-site. |
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Poster TUPPC128 [4.826 MB] | ||
TUPPC132 | Accelerator Control Data Visualization with Google Map | controls, status, GUI, survey | 897 |
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Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. Using geological map data to serve as a visualization for components of a Controls System provides Main Control Room Operators an easy way to both identify and locate conditions within specific parts of an accelerator complex that may require attention. Google's Map API provides a simple and convenient way to display some of C-AD's Controls System data and provide location and status feedback using dynamic symbols and animations. This paper describes the details of how chipmunk and beam loss data visualization can be implemented for the AGS/RHIC Controls system. Most of the server side and client site software can be easily adapted to many other similar types of data visualizations. Wenge Fu, Seth Nemesure, Brookhaven National Laboratory, Upton, NY 11973, USA |
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Poster TUPPC132 [2.086 MB] | ||
TUCOCA08 | Personnel and Machine Protection Systems in The National Ignition Facility (NIF) | controls, laser, operation, monitoring | 933 |
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Funding: * This work performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory (LLNL) under Contract DE-AC52-07NA27344. #LLNL-ABS-633232 The National Ignition Facility (NIF) is the world’s largest and most energetic laser system and has the potential to generate significant levels of ionizing radiation. The NIF employs real time safety systems to monitor and mitigate the potential hazards presented by the facility. The Machine Safety System (MSS) monitors key components in the facility to allow operations while also protecting against configurations that could damage equipment. The NIF Safety Interlock System (SIS) monitors for oxygen deficiency, radiological alarms, and controls access to the facility preventing exposure to laser light and radiation. Together the SIS and MSS control permissives to the hazard generating equipment and annunciate hazard levels in the facility. To do this reliably and safely, the SIS and MSS have been designed as fail safe systems with a proven performance record now spanning over 12 years. This presentation discusses the SIS and MSS, design, implementation, operator interfaces, validation/verification, and the hazard mitigation approaches employed in the NIF. A brief discussion of common failures encountered in the design of safety systems and how to avoid them will be presented. |
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Slides TUCOCA08 [2.808 MB] | ||
WECOBA05 | Understanding NIF Experimental Results: NIF Target Diagnostic Automated Analysis Recent Accompolishments | diagnostics, database, laser, software | 1008 |
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Funding: This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-632818 The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory is the most energetic laser system in the world. During a NIF laser shot, a 20-ns ultraviolet laser pulse is split into 192 separate beams, amplified, and directed to a millimeter-sized target at the center of a 10-m target chamber. To achieve the goals of studying energy science, basic science, and national security, NIF laser shot performance is being optimized around key metrics such as implosion shape and fuel mix. These metrics are accurately quantified after each laser shot using automated signal and image processing routines to analyze raw data from over 50 specialized diagnostics that measure x-ray, optical and nuclear phenomena. Each diagnostic’s analysis is comprised of a series of inverse problems, timing analysis, and specialized processing. This talk will review the framework for general diagnostic analysis, give examples of specific algorithms used, and review the diagnostic analysis team’s recent accomplishments. The automated diagnostic analysis for x-ray, optical, and nuclear diagnostics provides accurate key performance metrics and enables NIF to achieve its goals. |
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Slides WECOBA05 [3.991 MB] | ||
THCOAAB05 | Rapid Application Development Using Web 2.0 Technologies | framework, software, interface, experiment | 1058 |
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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. #LLNL-ABS-632813 The National Ignition Facility (NIF) strives to deliver reliable, cost effective applications that can easily adapt to the changing business needs of the organization. We use HTML5, RESTful web services, AJAX, jQuery, and JSF 2.0 to meet these goals. WebGL and HTML5 Canvas technologies are being used to provide 3D and 2D data visualization applications. JQuery’s rich set of widgets along with technologies such as HighCharts and Datatables allow for creating interactive charts, graphs, and tables. PrimeFaces enables us to utilize much of this Ajax and JQuery functionality while leveraging our existing knowledge base in the JSF framework. RESTful Web Services have replaced the traditional SOAP model allowing us to easily create and test web services. Additionally, new software based on NodeJS and WebSocket technology is currently being developed which will augment the capabilities of our existing applications to provide a level of interaction with our users that was previously unfeasible. These Web 2.0-era technologies have allowed NIF to build more robust and responsive applications. Their benefits and details on their use will be discussed. |
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Slides THCOAAB05 [0.832 MB] | ||
THMIB04 | Optimizing Blocker Usage on NIF Using Image Analysis and Machine Learning | site, laser, optics, scattering | 1079 |
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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. #LLNL-ABS-633358 To optimize laser performance and minimize operating costs for high energy laser shots it is necessary to locally shadow, or block, flaws from laser light exposure in the beamline optics. Blockers are important for temporarily shadowing a flaw on an optic until the optic can be removed and repaired. To meet this need, a combination of image analysis and machine learning techniques have been developed to accurately define the list of locations where blockers should be applied. The image analysis methods extract and measure evidence of flaw candidates and their correlated downstream hot spots and this information is passed to machine learning algorithms which rank the probability that candidates are flaws that require blocking. Preliminary results indicate this method will increase the percentage of true positives from less than 20% to about 90%, while significantly reducing recall – the total number of candidates brought forward for review. |
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Slides THMIB04 [0.243 MB] | ||
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Poster THMIB04 [2.532 MB] | ||
THPPC083 | Software Tool Leverages Existing Image Analysis Results to Provide In-Situ Transmission of the NIF Disposable Debris Shields | software, laser, optics, alignment | 1270 |
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Funding: * This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-632472 The Disposable Debris-Shield (DDS) Attenuation Tool is software that leverages Automatic Alignment image analysis results and takes advantage of the DDS motorized insertion and removal to compute the in-situ transmission of the 192 NIF DDS. The NIF employs glass DDS to protect the final optics from debris and shrapnel generated by the laser-target interaction. Each DDS transmission must be closely monitored and replaced when its physical characteristics impact laser performance. The tool was developed to calculate the transmission by obtaining the total pixel intensity of acquired images with the debris shield inserted and removed. These total intensities existed in the Automatic Alignment image processing algorithms. The tool uses this data, adding the capability to specify DDS to test, moves the DDS, performs calculations, and saves data to an output file. It operates on all 192 beams of the NIF in parallel, and has shown a discrepancy between laser predictive models and actual. As qualification the transmission of new DDS were tested, with known transmissions supplied by the vendor. This demonstrated the tool capable of measuring in-situ DDS transmission to better than 0.5% rms. |
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Poster THPPC083 [2.362 MB] | ||
THPPC115 | Fast Orbit Feedback Implementation at Alba Synchrotron | software, FPGA, real-time, hardware | 1328 |
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After the successful accelerator commissioning and with the facility already in operation one of the top short term objectives pointed out by accelerator division was the Fast Orbit Feedback implementation (FOFB). The target of the FOFB system is to hold the electron beam position at submicron range both in vertical and horizontal planes correcting the inestabilities up to 120Hz. This increased beam stability performance is considered a major asset for the beamlines user operation. To achieve this target, the orbit position is acquired from the 88 Libera BPMs at a 10KHz sampling rate, distributed through an independent network and the corrections are calculated and sent to the 176 power supplies that drive the corrector coils. All this correction loop is executed at 10 KHz and the total latency of the system is characterized and minimized optimizing the bandwidth response. | |||
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Poster THPPC115 [0.732 MB] | ||
THPPC123 | Online Luminosity Optimization at the LHC | luminosity, experiment, controls, proton | 1351 |
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The online luminosity control of the LHC experiments consists of an automatic slow real-time feedback system controlled by a specific experiment software that communicates directly with an LHC application. The LHC application drives a set of corrector magnets to adjust the transversal beam overlap at the interaction point in order to keep the instantaneous luminosity aligned to the target luminosity provided by the experiment. This solution was proposed by the LHCb experiment and tested first in July 2010. It has been in routine operation during the first two years of physics luminosity data taking, 2011 and 2012, in LHCb. It was also adopted for the ALICE experiment during 2011. The experience provides an important basis for the potential future need of levelling the luminosity in all the LHC experiments. This paper describes the implementation of the LHC application controlling the luminosity at the experiments and the information exchanged that allows this automatic control. | |||
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Poster THPPC123 [1.344 MB] | ||
THPPC141 | Automatic Alignment Upgrade of Advanced Radiographic Capability for the National Ignition Facility | alignment, laser, operation, vacuum | 1384 |
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Funding: This work was performed under the auspices of the Lawrence Livermore National Security, LLC, (LLNS) under Contract No. DE-AC52-07NA27344. #LLNL-ABS-632633 For many experiments planned on the National Ignition Facility (NIF), high-energy x-ray backlighters are an important diagnostic. NIF will be deploying this year a new Advanced Radiographic Capability (ARC) for generating these high-energy short-pulses. The precision of the Automatic Alignment (AA) for ARC is an important element in the success of the enhancement. A key aspect of the ARC AA is integration of the new alignment capabilities without disturbing the existing AA operations of NIF. Small pointing tolerances of 5 micron precision to a 10 micron target are required. After main amplification the beams are shortened by up to 1,000x in time in the ARC compressor vessel and aimed at backlighter targets in the NIF target chamber. Alignment Stability and Verification of the compressor gratings is critical to ensuring the ARC pulses meet their experimental specifications. |
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Poster THPPC141 [4.485 MB] | ||
THCOBB03 | Automating Control of the Beams for the NASA Space Radiation Laboratory | ion, ion-source, booster, laser | 1392 |
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Funding: Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. The NASA Space Radiation Laboratory (NSRL) at BNL uses many different beams to do experiments associated with evaluating the possible risks to astronauts in space environments. This facility became operational in 2003 and operates from the AGS Booster synchrotron. In order to simulate the space radiation environment some of these experiments need to make use of beams of various energies. To simulate solar flare events, we implemented the Solar Particle Simulator in 2005. This system put in modifications to the accelerator controls to allow beam energies to be changed automatically, enabling target samples to be irradiated with many energies of the same type of ion, without having to make use of degraders. To simulate Galactic Cosmic events, they need to also be able to automatically change the ions used to irradiate a single sample. This project aims to allow NSRL to change ions as well as beam energies within a very short period of time. To do this requires modifications to existing controls as well as building new controls for a laser ion source. In this paper we describe NSRL, our plans to implement the Galactic Cosmic Event Simulator, and the status of the laser ion source. |
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Slides THCOBB03 [4.853 MB] | ||
THCOCB02 | The Role of Data Driven Models in Optimizing the Operation of the National Ignition Facility | laser, experiment, operation, simulation | 1426 |
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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. #LLNL-ABS-633233 The Virtual Beam Line (VBL) code is essential to operate, maintain and validate the design of laser components to meet the performance goals at Lawrence Livermore National Laboratory’s National Ignition Facility (NIF). The NIF relies upon the Laser Performance Operations Model (LPOM), whose physics engine is the Virtual Beam Line (VBL) code, to automate the setup of the laser by simulating the laser energetics of the as-built system. VBL simulates paraxial beam propagation, amplification, aberration and modulation, nonlinear self-focusing and focal behavior. Each of the NIF’s 192 beam lines are modeled in parallel on the LPOM Linux compute cluster during shot setup and validation. NIF achieved a record 1.8 MJ shot in July 2012, and LPOM (with VBL) was key to achieving the requested pulse shape. We will discuss some examples of how the VBL physics code is used to model the laser phenomena and operate the NIF laser system. |
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Slides THCOCB02 [4.589 MB] | ||
THCOCB05 | The LHCb Online Luminosity Monitoring and Control | luminosity, controls, detector, experiment | 1438 |
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The LHCb experiment searches for New Physics by precision measurements in heavy flavour physics. The optimization of the data taking conditions relies on accurate monitoring of the instantaneous luminosity, and many physics measurements rely on accurate knowledge of the integrated luminosity. Most of the measurements have potential systematic effects associated with pileup and changing running conditions. To cope with these while aiming at maximising the collected luminosity, a control of the LHCb luminosity was put in operation. It consists of an automatic real-time feedback system controlled from the LHCb online system which communicates directly with an LHC application which in turn adjusts the beam overlap at the interaction point. It was proposed and tested in July 2010 and has been in routine operation during 2011-2012. As a result, LHCb has been operating at well over four times the design pileup, and 95% of the integrated luminosity has been recorded within 3% of the desired luminosity. This paper motivates and describes the implementation and the experience with the online luminosity monitoring and control, including the mechanisms to perform the luminosity calibrations. | |||
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Slides THCOCB05 [1.368 MB] | ||
THCOCA03 | High-Precision Timing of Gated X-Ray Imagers at the National Ignition Facility | timing, laser, experiment, detector | 1449 |
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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. #LLNL-ABS-633013 The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory is a stadium-sized facility that contains a 192-beam, 1.8-Megajoule, 500-Terawatt, ultraviolet laser system together with a 10-meter diameter target chamber. We describe techniques used to synchronize data acquired by gated x-ray imagers with laser beams at the National Ignition Facility (NIF). Synchronization is achieved by collecting data from multiple beam groups with spatial and temporal separation in a single NIF shot. By optimizing the experimental setup and data analysis, repeatable measurements of 15ps or better have been achieved. This demonstrates that the facility timing system, laser, and target diagnostics, are highly stable over year-long time scales. |
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Slides THCOCA03 [1.182 MB] | ||
THCOCA05 | Laser MegaJoule Timing System | laser, timing, diagnostics, high-voltage | 1457 |
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The French Commissariat à l’Énergie Atomique et aux Énergies alternatives (CEA) is currently building the Laser Megajoule (LMJ). This facility is designed to deliver laser energy to targets for high energy density physics experiments, including fusion experiments. The Integrated Timing and Triggering System (ITTS) is one of the critical LMJ components, in charge of timing distribution for synchronizing the laser beams and triggering the shot data acquisitions. The LMJ ITTS Control System provides a single generic interface to its users at the Supervisory level, built around the key concept of “Synchronized Channels Group”, a set of delay channels triggered simultaneously. Software common components provide basic mechanisms: communication with its users, channel registration User-defined delays are specified with respect to a given reference(target chamber center, quadruplet or beam reference times), these delays are then translated into hardware delays according to different parameters such as electronic cards temperatures(for thermal drift correction) and transit delays. Equipments are mainly off-the-shelf timing equipments delivering trigger signals with jitter down to 15ps rms. | |||
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Slides THCOCA05 [0.974 MB] | ||
FRCOAAB04 | Data Driven Campaign Management at the National Ignition Facility | experiment, diagnostics, interface, database | 1473 |
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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. #LLNL-ABS-633255 The Campaign Management Tool Suite (CMT) provides tools for establishing the experimental goals, achieving reviews and approvals, and ensuring readiness for a NIF experiment. Over the last 2 years, CMT has significantly increased the number of diagnostics that supports to around 50. Meeting this ever increasing demand for new functionality has resulted in a design whereby more and more of the functionality can be specified in data rather than coded directly in Java. To do this support tools have been written that manage various aspects of the data and to also handle potential inconsistencies that can arise from a data driven paradigm. For example; drop down menus are specified in the Part and Lists Manager, the Shot Setup reports that lists the configurations for diagnostics are specified in the database, the review tool Approval Manager has a rules engine that can be changed without a software deployment, various template managers are used to provide predefined entry of hundreds parameters and finally a stale data tool validates that experiments contain valid data items. The trade-offs, benefits and issues of adapting and implementing this data driven philosophy will be presented. |
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Slides FRCOAAB04 [0.929 MB] | ||