ICALEPCS2017 - List of Keywords (laser)

Paper	Title	Other Keywords	Page
MOCPL02	Experiences with Laser Survey Instrument Based Approach to National Ignition Facility Diagnostic Alignments	ion, alignment, diagnostics, target	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.
	Talk as video stream: https://youtu.be/AIK4GBUOmCw
	Slides MOCPL02 [278.247 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOCPL06	MARWIN: A Mobile Autonomous Robot for Maintenance and Inspection	ion, radiation, software, FEL	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.
	Talk as video stream: https://youtu.be/SRnZSWMhgQg
	Slides MOCPL06 [27.173 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL06
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TUCPA02	Leveraging Splunk for Control System Monitoring and Management	ion, controls, monitoring, alignment	253
	M.A. Fedorov, P. Adams, G.K. Brunton, B.T. Fishler, M.S. Flegel, K.C. Wilhelmsen, E.F. Wilson 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) is the world's largest and most energetic laser experimental facility with 192 beams capable of delivering 1.8 megajoules and 500-terawatts of ultraviolet light to a target. To aid in NIF control system troubleshooting, the commercial product Splunk was introduced to collate and view system log files collected from 2,600 processes running on 1,800 servers, front-end processors, and embedded controllers. We have since extended Splunk's access into current and historical control system configuration data, as well as experiment setup and results. Leveraging Splunk's built-in data visualization and analytical features, we have built custom tools to gain insight into the operation of the control system and to increase its reliability and integrity. Use cases include predictive analytics for alerting on pending failures, analyzing shot operations critical path to improve operational efficiency, performance monitoring, project management, and in analyzing and monitoring system availability. This talk will cover the various ways we've leveraged Splunk to improve and maintain NIF's integrated control system. LLNL-ABS-728830
	Slides TUCPA02 [1.762 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUCPA02
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TUCPA05	Laser Damage Image Pre-processing Based on Total Variation	ion, optics, site, electron	272
	J. Luo, Z. Ni, X. Xie, X. Zhou CAEP, Sichuan, People's Republic of China
	The inspection and tracking of laser-induced damages of optics play a significant role in high-power laser systems. Laser-induced defects or flaws on the surfaces of optics are presented in images acquired by specific charge coupled devices (CCDs), hence the identification of defects from laser damage images is essential. Despite a great effort we have made to improve the imaging results, the defect identification is a challenging task. The proposed research focuses on the pre-processing of laser damage images, which assists identifying optic defects. We formulate the image pre-processing as a total variation (TV) based image reconstruction problem, and further develop an alternating direction method of multipliers (ADMM) algorithm to solve it. The use of TV regularization makes the pre-processed image sharper by preserving the edges or boundaries more accurately. Experimental results demonstrate the effectiveness of this method.
	Slides TUCPA05 [0.538 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUCPA05
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUMPA05	OPC UA to DOOCS Bridge: A Tool for Automated Integration of Industrial Devices Into the Accelerator Control Systems at FLASH and European XFEL	ion, controls, PLC, feedback	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 TUMPA05 [0.817 MB]
	Poster TUMPA05 [1.190 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA05
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TUMPA07	Advances in Automatic Performance Optimization at FERMI	ion, FEL, electron, experiment	352
	G. Gaio, N. Bruchon, M. Lonza Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy L. Saule University of Trieste, Trieste, Italy
	Despite the large number of feedback loops running simultaneously at the FERMI Free Electron Laser (FEL), they are not sufficient to keep the optimal machine working point in the long term, in particular when the machine is tuned in such a way to be more sensitive to drifts of the critical parameters. In order to guarantee the best machine performance, a novel software application which minimizes the shot to shot correlation between these critical parameters and the FEL radiation has been implemented. This application, which keeps spatially and temporally aligned the seed laser and the electron beam, contrary to many algorithms that inject noise in the system to be optimized, run transparently during the experiment beam times. In this paper we will also present a newly developed method to calculate a beam 'quality factor' starting from the images provided by a photon spectrometer, which tries to mimic the evaluation of machine physicists, as well as the results obtained using two model-less algorithms to optimize the FEL performance through maximization of the quality factor.
	Slides TUMPA07 [0.846 MB]
	Poster TUMPA07 [1.124 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA07
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TUPHA083	The TimIQ Synchronization for Sub-Picoseconds Delay Adjustment	ion, synchrotron, electron, experiment	604
	J.P. Ricaud, N. Hubert, M. Labat, C. Laulhé SOLEIL, Gif-sur-Yvette, France H. Enquist MAX IV Laboratory, Lund University, Lund, Sweden C. Laulhé Université Paris-Saclay, Saint-Aubin, France
	Synchrotron facilities provides short, regular and high frequency flashes of light. These pulses are used by the scientific community for time resolved experiments. To improve the time resolution, demands for always shorter X-ray pulses are growing. To achieve this goal, Synchrotron SOLEIL and MAX IV laboratory have developed special operating modes such as low-alpha and femtoslicing, as well as a single pass linear accelerator. For the most demanding experiments, the synchronization between short light pulses and pump-probe devices requires sub-picoseconds delay adjustment. The TimIQ system has been developed for that purpose. It is a joint development between Synchrotron Soleil and MAX IV Laboratory. It is aimed to be used on three beamlines at Soleil and one at MAX IV. Based on IQ modulation technics, it allows shifting a radio frequency clock by steps of #100 fs. This paper is a description of this system and of its performances.
	Poster TUPHA083 [1.727 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA083
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TUPHA125	The Bunch Arrival Time Monitor at FLASH and European XFEL	ion, controls, electron, FEL	701
	M. Viti, M.K. Czwalinna, H. Dinter, C. Gerth, K.P. Przygoda, R. Rybaniec, H. Schlarb DESY, Hamburg, Germany
	In modern free electron laser facilities like FLASH I/II and European XFEL at DESY a high resolution intra bunch train arrival time measurement is mandatory, providing a crucial information for the beam based feedback system. For this purpose a Bunch Arrival Time Monitor (BAM) was developed, based on an electro-optical scheme where an ultra-short pulsed laser is employed. A BAM is composed of several subsystems, including stepper motors, power management, dedicated readout board, management board for voltage settings, temperature sensors and temperature controller and optical amplifier. Part of the electronics is developed using the MicroTCA standard. We will present in this poster the basic requirements for the BAM, software design and implementation developed to manage the subsystems and their interactions.
	Poster TUPHA125 [1.356 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA125
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TUPHA166	New Developments for the HDB++ TANGO Archiving System	ion, TANGO, GUI, SRF	801
	L. Pivetta, G. Scalamera, G. Strangolino, L. Zambon Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy R. Bourtembourg, S. James, J.L. Pons, P.V. Verdier ESRF, Grenoble, France S. Rubio-Manrique ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain
	TANGO HDB++ is a high performance event-driven archiving system which stores data with micro-second resolution timestamps, using archivers written in C++. HDB++ currently supports MySQL and Apache Cassandra back-ends but could be easily extended to support additional back-ends. Since the initial release many improvements and new features have been added to the HDB++. In addition to bug-fixes and optimizations, the support for context-based archiving allows to define an archiving strategy for each attribute, specifying when it has to be archived or not. Temporary archiving is supported by means of a time-to-live parameter, available on a per-attribute basis. The Cassandra back-end is using Cassandra TTL native feature underneath to implement the time-to-live feature. With dynamic loading of specific libraries switching back-ends can be done on-the-fly and is as simple as changing a property. Partition and maintenance scripts are now available for HDB++ and MySQL. The HDB++ tools, such as extraction libraries and GUIs, followed HDB++ evolution to help the user to take full advantage of the new features.
	Poster TUPHA166 [1.957 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA166
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TUSH202	The Laser Megajoule Facility: Personnel Safety System	ion, Windows, controls, experiment	994
	M.G. Manson CEA, LE BARP cedex, France
	The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on the way. The presentation gives an overview of the Personnel Safety System architecture, focusing on the wired safety subsystem named BT2. We describe the specific software tool used to develop wired safety functions. This tool simulates hardware and bus interfaces, helps writing technical specifications, conducts functional analysis, performs functional tests and generates documentation. All generated documentation and results from the tool are marked with a unique digital signature. We explain how the tool demonstrates SIL3 compliance of safety functions by integrating into a standard V-shaped development cycle.
	Poster TUSH202 [3.406 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUSH202
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WEAPL05	PARC: A Computational System in Support of Laser Megajoule Facility Operations	ion, interface, software, GUI	1034
	J-P. Airiau, V. Beau, E. Bordenave, T.C. Chies, H. CoÃ¯c, V. Denis, P. Fourtillan, X. Julien, L. Lacamapgne, C. Lacombe, L. Le Deroff, S. Mainguy, M. Sozet, S. Vermersch CEA, LE BARP cedex, France
	The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on the way. PARC * is the computational system used to automate the laser setup and the generation of shot report with all the results acquired during the shot sequence process (including alignment and synchronization). It has been designed to run sequence in order to perform a setup computation or a full facility shot report in less than 15 minutes for 1 or 176 beams. This contribution describes how this system solves this challenge and enhances the overall process. * PARC: French acronym for automatic bundle settings prediction.
	Talk as video stream: https://youtu.be/mLWJffxeMdo
	Slides WEAPL05 [2.032 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL05
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THPHA025	LCLS-II Injector Laser System	ion, controls, electron, timing	1397
	S.C. Alverson, D.E. Anderson, S. Gilevich SLAC, Menlo Park, California, USA
	Funding: SLAC National Accelerator Lab - LCLS-II The Linac Coherent Light Source II (LCLSII) is a new Free Electron Laser (FEL) facility being built as an upgrade to the existing LCLS-I and is planned for early commissioning this year (2017) and full operation in 2020. The injector laser which hits the cathode to produce the electrons for this FEL source is conceptually similar to LCLS-I, but will utilize an upgraded controls architecture in order to be compatible with the faster repetition rate (1 MHz) of the beam. This includes moving to industrial PCs from VME and utilizing SLAC designed PCIe timing cards and camera framegrabbers. This poster discusses the overall architecture planned for this installation and discusses the reasoning behind the choices of hardware and control scheme.
	Poster THPHA025 [1.381 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA025
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THPHA108	Versatile Service for the Protection of Experimental Areas at CERN	ion, controls, FPGA, software	1634
	F. Valentini, M. Munoz-Codoceo, P. Ninin CERN, Geneva, Switzerland
	In addition to the large LHC experiments, CERN hosts a number of other experimental areas with a rich research program ranging from fundamental physics to medical applications. The risk assessments have shown a large palette of potential hazards (radiological, electrical, chemical, laser, etc.) that need to be properly mitigated in order to ensure the safety of personnel working inside these areas. A Personnel Protection System, typically, accomplishes this goal by implementing a certain number of heterogeneous functionalities as interlocks of critical elements, management of a local HMI, data monitoring and interfacing with RFID badge readers. Given those requirements, reducing system complexity and costs are key parameters to be optimized in the solution. This paper is aimed at summarizing the findings, in terms of costs, complexity and maintenance reduction, offered by a technology from National Instruments® based on cRIO controllers and a new series of SIL-2 certified safety I/O modules. A use case based on a service for the protection of Class 4 laser laboratories will be described in detail.
	Poster THPHA108 [2.553 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA108
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THPHA171	Control System Software Development Environment in ELI Beamlines	ion, software, controls, interface	1831
	P. Bastl Institute of Physics of the ASCR, Prague, Czech Republic O. Janda, A. Kruchenko, P. Pivonka, B. Plötzeneder, S. Saldulkar, J. Trdlicka ELI-BEAMS, Prague, Czech Republic
	The ELI Beamlines facility is a Petawatt laser facility in the final construction and commissioning phase in Prague, Czech Republic. The central control system operates and controls complex subsystems (lasers, beam transport, beamlines, experiments, facility systems, safety systems) with huge ammount of devices and computers. Therefore standards for software development were established: - Model based development - Standard approach to user interfaces - Standard approaches to device interfaces - Third party envirnment interfaces TANGO framework was choosen for communication in distributed control system environment.
	Poster THPHA171 [3.324 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA171
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FRAPL05	Hardware Architecture of the ELI Beamlines Control and DAQ System	ion, controls, network, hardware	2000
	P. Bastl Institute of Physics of the ASCR, Prague, Czech Republic V. Gaman, O. Janda, P. Pivonka, B. Plötzeneder, J. Sys, J. Trdlicka ELI-BEAMS, Prague, Czech Republic
	The ELI Beamlines facility is a Petawatt laser facility in the final construction and commissioning phase in Prague, Czech Republic. End 2017, a first experiment will be performed. In the end, four lasers will be used to control beamlines in six experimental halls. The central control system connects and controls more than 40 complex subsystems (lasers, beam transport, beamlines, experiments, facility systems, safety systems), with high demands on network, synchronisation, data acquisition, and data processing. It relies on a network based on more than 15.000 fibres, which is used for standard technology control (PowerLink over fibre and standard Ethernet), timing (WhiteRabbit) and dedicated high-throughput data acquisition. Technology control is implemented on standard industrial platforms (B&R) in combination with uTCA for more demanding applications. The data acquisition system is interconnected via Infiniband, with an option to integrate OmniPath. Most control hardware installations are completed, and many subsystems are already successfully in operation. An overview and status will be given.
	Talk as video stream: https://youtu.be/W2TF37cRWTo
	Slides FRAPL05 [5.051 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-FRAPL05
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FRAPL06	The Laser MegaJoule Facility: Control System Status Report	ion, controls, operation, target	2007
	H. Durandeau CEA, LE BARP cedex, France
	The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on their way. There are three steps for the validation of a new bundle and its integration to the existing control system. The first step is to verify the ability of every command control subsystems to drive the new bundle using a secondary independent supervisory. It is performed from a dedicated integration control room. The second is to switch the bundle to the main operations control room supervisory. At this stage, we perform the global system tests to validate the commissioning of the new bundle. In this paper we focus on the switch of a new bundle from the integration control room to the main operations control room. We have to connect all equipment controllers of the bundle to the operations network and update the Facility Configuration Management.
	Talk as video stream: https://youtu.be/lAAFjDIKlwo
	Slides FRAPL06 [4.115 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-FRAPL06
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOCPL02

Experiences with Laser Survey Instrument Based Approach to National Ignition Facility Diagnostic Alignments

ion, alignment, diagnostics, target

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.

Talk as video stream: https://youtu.be/AIK4GBUOmCw

Slides MOCPL02 [278.247 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOCPL06

MARWIN: A Mobile Autonomous Robot for Maintenance and Inspection

ion, radiation, software, FEL

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.

Talk as video stream: https://youtu.be/SRnZSWMhgQg

Slides MOCPL06 [27.173 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-MOCPL06

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUCPA02

Leveraging Splunk for Control System Monitoring and Management

ion, controls, monitoring, alignment

253

M.A. Fedorov, P. Adams, G.K. Brunton, B.T. Fishler, M.S. Flegel, K.C. Wilhelmsen, E.F. Wilson
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) is the world's largest and most energetic laser experimental facility with 192 beams capable of delivering 1.8 megajoules and 500-terawatts of ultraviolet light to a target. To aid in NIF control system troubleshooting, the commercial product Splunk was introduced to collate and view system log files collected from 2,600 processes running on 1,800 servers, front-end processors, and embedded controllers. We have since extended Splunk's access into current and historical control system configuration data, as well as experiment setup and results. Leveraging Splunk's built-in data visualization and analytical features, we have built custom tools to gain insight into the operation of the control system and to increase its reliability and integrity. Use cases include predictive analytics for alerting on pending failures, analyzing shot operations critical path to improve operational efficiency, performance monitoring, project management, and in analyzing and monitoring system availability. This talk will cover the various ways we've leveraged Splunk to improve and maintain NIF's integrated control system.
LLNL-ABS-728830

Slides TUCPA02 [1.762 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUCPA02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUCPA05

Laser Damage Image Pre-processing Based on Total Variation

ion, optics, site, electron

272

J. Luo, Z. Ni, X. Xie, X. Zhou
CAEP, Sichuan, People's Republic of China

The inspection and tracking of laser-induced damages of optics play a significant role in high-power laser systems. Laser-induced defects or flaws on the surfaces of optics are presented in images acquired by specific charge coupled devices (CCDs), hence the identification of defects from laser damage images is essential. Despite a great effort we have made to improve the imaging results, the defect identification is a challenging task. The proposed research focuses on the pre-processing of laser damage images, which assists identifying optic defects. We formulate the image pre-processing as a total variation (TV) based image reconstruction problem, and further develop an alternating direction method of multipliers (ADMM) algorithm to solve it. The use of TV regularization makes the pre-processed image sharper by preserving the edges or boundaries more accurately. Experimental results demonstrate the effectiveness of this method.

Slides TUCPA05 [0.538 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUCPA05

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUMPA05

OPC UA to DOOCS Bridge: A Tool for Automated Integration of Industrial Devices Into the Accelerator Control Systems at FLASH and European XFEL

ion, controls, PLC, feedback

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 TUMPA05 [0.817 MB]

Poster TUMPA05 [1.190 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA05

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TUMPA07

Advances in Automatic Performance Optimization at FERMI

ion, FEL, electron, experiment

352

G. Gaio, N. Bruchon, M. Lonza
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
L. Saule
University of Trieste, Trieste, Italy

Despite the large number of feedback loops running simultaneously at the FERMI Free Electron Laser (FEL), they are not sufficient to keep the optimal machine working point in the long term, in particular when the machine is tuned in such a way to be more sensitive to drifts of the critical parameters. In order to guarantee the best machine performance, a novel software application which minimizes the shot to shot correlation between these critical parameters and the FEL radiation has been implemented. This application, which keeps spatially and temporally aligned the seed laser and the electron beam, contrary to many algorithms that inject noise in the system to be optimized, run transparently during the experiment beam times. In this paper we will also present a newly developed method to calculate a beam 'quality factor' starting from the images provided by a photon spectrometer, which tries to mimic the evaluation of machine physicists, as well as the results obtained using two model-less algorithms to optimize the FEL performance through maximization of the quality factor.

Slides TUMPA07 [0.846 MB]

Poster TUMPA07 [1.124 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUMPA07

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TUPHA083

The TimIQ Synchronization for Sub-Picoseconds Delay Adjustment

ion, synchrotron, electron, experiment

604

J.P. Ricaud, N. Hubert, M. Labat, C. Laulhé
SOLEIL, Gif-sur-Yvette, France
H. Enquist
MAX IV Laboratory, Lund University, Lund, Sweden
C. Laulhé
Université Paris-Saclay, Saint-Aubin, France

Synchrotron facilities provides short, regular and high frequency flashes of light. These pulses are used by the scientific community for time resolved experiments. To improve the time resolution, demands for always shorter X-ray pulses are growing. To achieve this goal, Synchrotron SOLEIL and MAX IV laboratory have developed special operating modes such as low-alpha and femtoslicing, as well as a single pass linear accelerator. For the most demanding experiments, the synchronization between short light pulses and pump-probe devices requires sub-picoseconds delay adjustment. The TimIQ system has been developed for that purpose. It is a joint development between Synchrotron Soleil and MAX IV Laboratory. It is aimed to be used on three beamlines at Soleil and one at MAX IV. Based on IQ modulation technics, it allows shifting a radio frequency clock by steps of #100 fs. This paper is a description of this system and of its performances.

Poster TUPHA083 [1.727 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA083

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TUPHA125

The Bunch Arrival Time Monitor at FLASH and European XFEL

ion, controls, electron, FEL

701

M. Viti, M.K. Czwalinna, H. Dinter, C. Gerth, K.P. Przygoda, R. Rybaniec, H. Schlarb
DESY, Hamburg, Germany

In modern free electron laser facilities like FLASH I/II and European XFEL at DESY a high resolution intra bunch train arrival time measurement is mandatory, providing a crucial information for the beam based feedback system. For this purpose a Bunch Arrival Time Monitor (BAM) was developed, based on an electro-optical scheme where an ultra-short pulsed laser is employed. A BAM is composed of several subsystems, including stepper motors, power management, dedicated readout board, management board for voltage settings, temperature sensors and temperature controller and optical amplifier. Part of the electronics is developed using the MicroTCA standard. We will present in this poster the basic requirements for the BAM, software design and implementation developed to manage the subsystems and their interactions.

Poster TUPHA125 [1.356 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA125

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TUPHA166

New Developments for the HDB++ TANGO Archiving System

ion, TANGO, GUI, SRF

801

L. Pivetta, G. Scalamera, G. Strangolino, L. Zambon
Elettra-Sincrotrone Trieste S.C.p.A., Basovizza, Italy
R. Bourtembourg, S. James, J.L. Pons, P.V. Verdier
ESRF, Grenoble, France
S. Rubio-Manrique
ALBA-CELLS Synchrotron, Cerdanyola del Vallès, Spain

TANGO HDB++ is a high performance event-driven archiving system which stores data with micro-second resolution timestamps, using archivers written in C++. HDB++ currently supports MySQL and Apache Cassandra back-ends but could be easily extended to support additional back-ends. Since the initial release many improvements and new features have been added to the HDB++. In addition to bug-fixes and optimizations, the support for context-based archiving allows to define an archiving strategy for each attribute, specifying when it has to be archived or not. Temporary archiving is supported by means of a time-to-live parameter, available on a per-attribute basis. The Cassandra back-end is using Cassandra TTL native feature underneath to implement the time-to-live feature. With dynamic loading of specific libraries switching back-ends can be done on-the-fly and is as simple as changing a property. Partition and maintenance scripts are now available for HDB++ and MySQL. The HDB++ tools, such as extraction libraries and GUIs, followed HDB++ evolution to help the user to take full advantage of the new features.

Poster TUPHA166 [1.957 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUPHA166

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TUSH202

The Laser Megajoule Facility: Personnel Safety System

ion, Windows, controls, experiment

994

M.G. Manson
CEA, LE BARP cedex, France

The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on the way. The presentation gives an overview of the Personnel Safety System architecture, focusing on the wired safety subsystem named BT2. We describe the specific software tool used to develop wired safety functions. This tool simulates hardware and bus interfaces, helps writing technical specifications, conducts functional analysis, performs functional tests and generates documentation. All generated documentation and results from the tool are marked with a unique digital signature. We explain how the tool demonstrates SIL3 compliance of safety functions by integrating into a standard V-shaped development cycle.

Poster TUSH202 [3.406 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-TUSH202

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WEAPL05

PARC: A Computational System in Support of Laser Megajoule Facility Operations

ion, interface, software, GUI

1034

J-P. Airiau, V. Beau, E. Bordenave, T.C. Chies, H. CoÃ¯c, V. Denis, P. Fourtillan, X. Julien, L. Lacamapgne, C. Lacombe, L. Le Deroff, S. Mainguy, M. Sozet, S. Vermersch
CEA, LE BARP cedex, France

The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on the way. PARC * is the computational system used to automate the laser setup and the generation of shot report with all the results acquired during the shot sequence process (including alignment and synchronization). It has been designed to run sequence in order to perform a setup computation or a full facility shot report in less than 15 minutes for 1 or 176 beams. This contribution describes how this system solves this challenge and enhances the overall process.
* PARC: French acronym for automatic bundle settings prediction.

Talk as video stream: https://youtu.be/mLWJffxeMdo

Slides WEAPL05 [2.032 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-WEAPL05

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THPHA025

LCLS-II Injector Laser System

ion, controls, electron, timing

1397

S.C. Alverson, D.E. Anderson, S. Gilevich
SLAC, Menlo Park, California, USA

Funding: SLAC National Accelerator Lab - LCLS-II
The Linac Coherent Light Source II (LCLSII) is a new Free Electron Laser (FEL) facility being built as an upgrade to the existing LCLS-I and is planned for early commissioning this year (2017) and full operation in 2020. The injector laser which hits the cathode to produce the electrons for this FEL source is conceptually similar to LCLS-I, but will utilize an upgraded controls architecture in order to be compatible with the faster repetition rate (1 MHz) of the beam. This includes moving to industrial PCs from VME and utilizing SLAC designed PCIe timing cards and camera framegrabbers. This poster discusses the overall architecture planned for this installation and discusses the reasoning behind the choices of hardware and control scheme.

Poster THPHA025 [1.381 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA025

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THPHA108

Versatile Service for the Protection of Experimental Areas at CERN

ion, controls, FPGA, software

1634

F. Valentini, M. Munoz-Codoceo, P. Ninin
CERN, Geneva, Switzerland

In addition to the large LHC experiments, CERN hosts a number of other experimental areas with a rich research program ranging from fundamental physics to medical applications. The risk assessments have shown a large palette of potential hazards (radiological, electrical, chemical, laser, etc.) that need to be properly mitigated in order to ensure the safety of personnel working inside these areas. A Personnel Protection System, typically, accomplishes this goal by implementing a certain number of heterogeneous functionalities as interlocks of critical elements, management of a local HMI, data monitoring and interfacing with RFID badge readers. Given those requirements, reducing system complexity and costs are key parameters to be optimized in the solution. This paper is aimed at summarizing the findings, in terms of costs, complexity and maintenance reduction, offered by a technology from National Instruments® based on cRIO controllers and a new series of SIL-2 certified safety I/O modules. A use case based on a service for the protection of Class 4 laser laboratories will be described in detail.

Poster THPHA108 [2.553 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA108

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THPHA171

Control System Software Development Environment in ELI Beamlines

ion, software, controls, interface

1831

P. Bastl
Institute of Physics of the ASCR, Prague, Czech Republic
O. Janda, A. Kruchenko, P. Pivonka, B. Plötzeneder, S. Saldulkar, J. Trdlicka
ELI-BEAMS, Prague, Czech Republic

The ELI Beamlines facility is a Petawatt laser facility in the final construction and commissioning phase in Prague, Czech Republic. The central control system operates and controls complex subsystems (lasers, beam transport, beamlines, experiments, facility systems, safety systems) with huge ammount of devices and computers. Therefore standards for software development were established: - Model based development - Standard approach to user interfaces - Standard approaches to device interfaces - Third party envirnment interfaces TANGO framework was choosen for communication in distributed control system environment.

Poster THPHA171 [3.324 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-THPHA171

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FRAPL05

Hardware Architecture of the ELI Beamlines Control and DAQ System

ion, controls, network, hardware

2000

P. Bastl
Institute of Physics of the ASCR, Prague, Czech Republic
V. Gaman, O. Janda, P. Pivonka, B. Plötzeneder, J. Sys, J. Trdlicka
ELI-BEAMS, Prague, Czech Republic

The ELI Beamlines facility is a Petawatt laser facility in the final construction and commissioning phase in Prague, Czech Republic. End 2017, a first experiment will be performed. In the end, four lasers will be used to control beamlines in six experimental halls. The central control system connects and controls more than 40 complex subsystems (lasers, beam transport, beamlines, experiments, facility systems, safety systems), with high demands on network, synchronisation, data acquisition, and data processing. It relies on a network based on more than 15.000 fibres, which is used for standard technology control (PowerLink over fibre and standard Ethernet), timing (WhiteRabbit) and dedicated high-throughput data acquisition. Technology control is implemented on standard industrial platforms (B&R) in combination with uTCA for more demanding applications. The data acquisition system is interconnected via Infiniband, with an option to integrate OmniPath. Most control hardware installations are completed, and many subsystems are already successfully in operation. An overview and status will be given.

Talk as video stream: https://youtu.be/W2TF37cRWTo

Slides FRAPL05 [5.051 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-FRAPL05

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FRAPL06

The Laser MegaJoule Facility: Control System Status Report

ion, controls, operation, target

2007

H. Durandeau
CEA, LE BARP cedex, France

The Laser MegaJoule (LMJ) is a 176-beam laser facility, located at the CEA CESTA Laboratory near Bordeaux (France). It is designed to deliver about 1.4 MJ of energy to targets, for high energy density physics experiments, including fusion experiments. The first 8-beams bundle was operated in October 2014 and a new bundle was commissioned in October 2016. The next two bundles are on their way. There are three steps for the validation of a new bundle and its integration to the existing control system. The first step is to verify the ability of every command control subsystems to drive the new bundle using a secondary independent supervisory. It is performed from a dedicated integration control room. The second is to switch the bundle to the main operations control room supervisory. At this stage, we perform the global system tests to validate the commissioning of the new bundle. In this paper we focus on the switch of a new bundle from the integration control room to the main operations control room. We have to connect all equipment controllers of the bundle to the operations network and update the Facility Configuration Management.

Talk as video stream: https://youtu.be/lAAFjDIKlwo

Slides FRAPL06 [4.115 MB]

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reference for this paper ※ https://doi.org/10.18429/JACoW-ICALEPCS2017-FRAPL06

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