Keyword: laser
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MOPKN011 CERN Alarms Data Management: State & Improvements database, data-management, controls, operation 110
  • Z. Zaharieva, M. Buttner
    CERN, Geneva, Switzerland
  The CERN Alarms System - LASER is a centralized service ensuring the capturing, storing and notification of anomalies for the whole accelerator chain, including the technical infrastructure at CERN. The underlying database holds the pre-defined configuration data for the alarm definitions, for the Operators alarms consoles as well as the time-stamped, run-time alarm events, propagated through the Alarms Systems. The article will discuss the current state of the Alarms database and recent improvements that have been introduced. It will look into the data management challenges related to the alarms configuration data that is taken from numerous sources. Specially developed ETL processes must be applied to this data in order to transform it into an appropriate format and load it into the Alarms database. The recorded alarms events together with some additional data, necessary for providing events statistics to users, are transferred to the long-term alarms archive. The article will cover as well the data management challenges related to the recently developed suite of data management interfaces in respect of keeping data consistency between the alarms configuration data coming from external data sources and the data modifications introduced by the end-users.  
poster icon Poster MOPKN011 [4.790 MB]  
MOPKS012 Design and Test of a Girder Control System at NSRRC controls, network, storage-ring, interface 183
  • H.S. Wang, J.-R. Chen, M. L. Chen, K.H. Hsu, W.Y. Lai, S.Y. Perng, Y.L. Tsai, T.C. Tseng
    NSRRC, Hsinchu, Taiwan
  A girder control system is proposed to quickly and precisely adjust the displacement and rotating angle of all girders in the storage ring with little manpower at the Taiwan Photon Source (TPS) project at National Synchrotron Research Center (NSRRC). In this control girder system, six motorized cam movers supporting a girder are driven on three pedestals to perform six-axis adjustments of a girder. A tiltmeter monitors the pitch and roll of each girder; several touch sensors measure the relative displacement between consecutive girders. Moreover, a laser position sensitive detector (PSD) system measuring the relative displacement between straight-section girders is included in this girder control system. Operator can use subroutines developed by MATLAB to control every local girder control system via intranet. This paper presents details of design and tests of the girder control system.  
MOPKS019 Electro Optical Beam Diagnostics System and its Control at PSI controls, software, electron, electronics 195
  • P. Chevtsov, F. Müller, V. Schlott, D.M. Treyer
    Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  • P. Peier
    PSI, Villigen, Switzerland
  • B. Steffen
    DESY, Hamburg, Germany
  Electro Optical (EO) techniques are very promising non-invasive methods for measuring extremely short (in a sub-picosecond range) electron bunches. A prototype of an EO Bunch Length Monitoring System (BLMS) for the future SwissFEL facility is created at PSI. The core of this system is an advanced fiber laser unit with pulse generating and mode locking electronics. The system is integrated into the EPICS based PSI controls, which significantly simplifies its operations. The paper presents main components of the BLMS and its performance.  
poster icon Poster MOPKS019 [0.718 MB]  
MOPMN025 New SPring-8 Control Room: Towards Unified Operation with SACLA and SPring-8 II Era. controls, operation, status, network 296
  • A. Yamashita, R. Fujihara, N. Hosoda, Y. Ishizawa, H. Kimura, T. Masuda, C. Saji, T. Sugimoto, S. Suzuki, M. Takao, R. Tanaka
    JASRI/SPring-8, Hyogo-ken, Japan
  • T. Fukui, Y. Otake
    RIKEN/SPring-8, Hyogo, Japan
  We have renovated the SPring-8 control room. This is the first major renovation since its inauguration in 1997. In 2011, the construction of SACLA (SPring-8 Angstrom Compact Laser Accelerator) was completed and it is planned to be controlled from the new control room for close cooperative operation with the SPring-8 storage ring. It is expected that another SPring-8 II project will require more workstations than the current control room. We have extended the control room area for these foreseen projects. In this renovation we have employed new technology which did not exist 14 years ago, such as a large LCD and silent liquid cooling workstations for comfortable operation environment. We have incorporated many ideas which were obtained during the 14 years experience of the design. The operation in the new control room began in April 2011 after a short period of the construction.  
MOPMS002 LHC Survey Laser Tracker Controls Renovation software, interface, hardware, controls 316
  • C. Charrondière, M. Nybø
    CERN, Geneva, Switzerland
  The LHC survey laser tracker control system is based on an industrial software package (Axyz) from Leica Geosystems™ that has an interface to Visual Basic 6.0™, which we used to automate the geometric measurements for the LHC magnets. As the Axyz package is no longer supported and the Visual Basic 6.0™ interface would need to be changed to Visual Basic. Net™ we have taken the decision to recode the automation application in LabVIEW™ interfacing to the PC-DMIS software, proposed by Leica Geosystems. This presentation describes the existing equipment, interface and application showing the reasons for our decisions to move to PC-DMIS and LabVIEW. We present the experience with the first prototype and make a comparison with the legacy system.  
poster icon Poster MOPMS002 [1.812 MB]  
TUDAUST01 Inauguration of the XFEL Facility, SACLA, in SPring-8 controls, electron, experiment, operation 585
  • R. Tanaka, Y. Furukawa, T. Hirono, M. Ishii, M. Kago, A. Kiyomichi, T. Masuda, T. Matsumoto, T. Matsushita, T. Ohata, C. Saji, T. Sugimoto, M. Yamaga, A. Yamashita
    JASRI/SPring-8, Hyogo-ken, Japan
  • T. Fukui, T. Hatsui, N. Hosoda, H. Maesaka, T. Ohshima, T. Otake, Y. Otake, H. Takebe
    RIKEN/SPring-8, Hyogo, Japan
  The construction of the X-ray free electron laser facility (SACLA) in SPring-8 started in 2006. After 5 years of construction, the facility completed to accelerate electron beams in February 2011. The main component of the accelerator consists of 64 C-band RF units to accelerate beams up to 8GeV. The beam shape is compressed to a length of 30fs, and the beams are introduced into the 18 insertion devices to generate 0.1nm X-ray laser. The first SASE X-ray was observed after the beam commissioning. The beam tuning will continue to achieve X-ray laser saturation for frontier scientific experiments. The control system adopts the 3-tier standard model by using MADOCA framework developed in SPring-8. The upper control layer consists of Linux PCs for operator consoles, Sybase RDBMS for data logging and FC-based NAS for NFS. The lower consists of 100 Solaris-operated VME systems with newly developed boards for RF waveform processing, and the PLC is used for slow control. The Device-net is adopted for the frontend devices to reduce signal cables. The VME systems have a beam-synchronized data-taking link to meet 60Hz beam operation for the beam tuning diagnostics. The accelerator control has gateways to the facility utility system not only to monitor devices but also to control the tuning points of the cooling water. The data acquisition system for the experiments is challenging. The data rate coming from 2D multiport CCD is 3.4Gbps that produces 30TB image data in a day. A sampled data will be transferred to the 10PFlops supercomputer via 10Gbps Ethernet for data evaluation.  
slides icon Slides TUDAUST01 [5.427 MB]  
TUDAUST03 Control System in SwissFEL Injector Test Facility controls, EPICS, electron, network 593
  • M. Dach, D. Anicic, D.A. Armstrong, K. Bitterli, H. Brands, P. Chevtsov, F. Haemmerli, M. Heiniger, C.E. Higgs, W. Hugentobler, G. Janser, G. Jud, B. Kalantari, R. Kapeller, T. Korhonen, R.A. Krempaska, M.P. Laznovsky, T. Pal, W. Portmann, D. Vermeulen, E. Zimoch
    Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
  The Free Electron Laser (SwissFEL) Test Facility is an important milestone for realization of a new SwissFEL facility. The first beam in the Test Facility was produced on the 24th of August 2010 which inaugurated the operation of the Injector. Since then, beam quality in various aspects has been greatly improved. This paper presents the current status of the Test Facility and is focused on the control system related issues which led to the successful commissioning. In addition, the technical challenges and opportunities in view of the future SwissFEL facility are discussed.  
slides icon Slides TUDAUST03 [3.247 MB]  
TUDAUST05 The Laser MegaJoule Facility: Control System Status Report controls, target, software, experiment 600
  • J.I. Nicoloso
    CEA/DAM/DIF, Arpajon, France
  • J.P.A. Arnoul
    CEA, Le Barp, France
  The French Commissariat à l'Energie 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. LMJ technological choices were validated with the LIL, a scale 1 prototype of one LMJ bundle. The construction of the LMJ building itself is now achieved and the assembly of laser components is on-going. A Petawatt laser line is also being installed in the building. The presentation gives an overview of the general control system architecture, and focuses on the hardware platform being installed on the LMJ, in the aim of hosting the different software applications for system supervisory and sub-system controls. This platform is based on the use of virtualization techniques that were used to develop a high availability optimized hardware platform, with a high operating flexibility, including power consumption and cooling considerations. This platform is spread over 2 sites, the LMJ itself of course, but also on the software integration platform built outside LMJ, and intended to provide system integration of various software control system components of the LMJ.  
slides icon Slides TUDAUST05 [9.215 MB]  
WEBHAUST03 Large-bandwidth Data Acquisition Network for XFEL Facility, SACLA network, controls, site, experiment 626
  • T. Sugimoto, Y. Joti, T. Ohata, R. Tanaka, M. Yamaga
    JASRI/SPring-8, Hyogo-ken, Japan
  • T. Hatsui
    RIKEN/SPring-8, Hyogo, Japan
  We have developed a large-bandwidth data acquisition (DAQ) network for user experiments at the SPring-8 Angstrom Compact Free Electron Laser (SACLA) facility. The network connects detectors, on-line visualization terminals and a high-speed storage of the control and DAQ system to transfer beam diagnostic data of each X-ray pulse as well as the experimental data. The development of DAQ network system (DAQ-LAN) was one of the critical elements in the system development because the data with transfer rate reaching 5 Gbps should be stored and visualized with high availability. DAQ-LAN is also used for instrument control. In order to guarantee the operation of both the high-speed data transfer and instrument control, we have implemented physical and logical network system. The DAQ-LAN currently consists of six 10-GbE capable network switches exclusively used for the data transfer, and ten 1-GbE capable network switches for instrument control and on-line visualization. High-availability was achieved by link aggregation (LAG) with typical convergence time of 500 ms, which is faster than RSTP (2 sec.). To prevent network trouble caused by broadcast, DAQ-LAN is logically separated into twelve network segments. Logical network segmentation are based on DAQ applications such as data transfer, on-line visualization, and instrument control. The DAQ-LAN will connect the control and DAQ system to the on-site high performance computing system, and to the next-generation super computers in Japan including K-computer for instant data mining during the beamtime, and post analysis.  
slides icon Slides WEBHAUST03 [5.795 MB]  
WEPMN028 Development of Image Data Acquisition System for 2D Detector at SACLA (SPring-8 XFEL) detector, data-acquisition, interface, FPGA 947
  • A. Kiyomichi, A. Amselem, T. Hirono, T. Ohata, R. Tanaka, M. Yamaga
    JASRI/SPring-8, Hyogo-ken, Japan
  • T. Hatsui
    RIKEN/SPring-8, Hyogo, Japan
  The x-ray free electron laser facility SACLA (SPring-8 Angstrom Compact free electron LAser) was constructed and started beam commissioning from March 2011. For the requirements of proposed experiments at SACLA, x-ray multi-readout ports CCD detectors (MPCCD) have been developed to realize a system with the total amount of 4 Mega-pixels area and 16bit wide dynamic range at a frame rate of 60Hz shot rate. We have developed the image data-handling scheme using the event-synchronized data-acquisition system. The front-end system used the CameraLink interface that excels in abilities of real-time triggering and high-speed data transfer. For the total data rate up to 4Gbps, the image data are collected by dividing the CCD detector into eight segments, which handles 0.5M pixels each, and then sent to high-speed data storage in parallel. We prepared two types of Cameralink imaging system for the VME and PC base. The Image Distribution board is made up of logic-reconfigurable VME board with CameraLink mezzanine card. The front-end system of MPCCD detector consists of eight sets of Image Distribution boards. We plan to introduce the online lossless compression using FPGA with arithmetic coding algorithm. For wide adaptability of user requirements, we also prepared the PC based imaging system, which consists of Linux server and commercial CameraLink PCI interface. It does not contain compression function, but supports various type of CCD camera, for example, high-definition (1920x1080) single CCD camera.  
poster icon Poster WEPMN028 [5.574 MB]  
WEPMS019 Measuring Angle with Pico Meter Resolution electronics, FPGA, ion, controls 1014
  • P. Mutti, M. Jentschel, T. Mary, F. Rey
    ILL, Grenoble, France
  • G. Mana, E. Massa
    INRIM, Turin, Italy
  The kilogram is the only remaining fundamental unit within the SI system that is defined in terms of a material artefact (a PtIr cylinder kept in Paris). Therefore, one of the major tasks of modern metrology is the redefinition of the kilogram on the basis of a natural quantity or of a fundamental constant. However, any kilogram redefinition must approach a 10-8 relative accuracy in its practical realization. A joint research project amongst the major metrology institutes in Europe has proposed the redefinition of the kilogram based on the mass of the 12C atom. The goal can be achieved by counting in a first step the number of atoms in a macroscopic weighable object and, in a second step, by weighing the atom by means of measuring its Compton frequency vC. It is in the second step of the procedure, where the ILL is playing a fundamental role with GAMS, the high-resolution γ-ray spectrometer. Energies of the γ-rays emitted in the decay of the capture state to the ground state of a daughter nucleus after a neutron capture reaction can be measured with high precision. In order to match the high demand in angle measurement accuracy, a new optical interferometer with 10 picorad resolution and linearity over a total measurement range of 15° and high stability of about 0.1 nrad/hour has been developed. To drive the interferometer, a new FPGA based electronics for the heterodyne frequency generation and for real time phase measurement and axis control has been realized. The basic concepts of the FPGA implementation will be revised.  
poster icon Poster WEPMS019 [6.051 MB]  
WEPMU009 The Laser MégaJoule Facility: Personnel Security and Safety Interlocks controls, interlocks, GUI, operation 1070
  • J.-C. Chapuis, J.P.A. Arnoul, A. Hurst, M.G. Manson
    CEA, Le Barp, France
  The French CEA (Commissariat à l'Énergie Atomique) is currently building the LMJ (Laser MégaJoule), at the CEA Laboratory CESTA near Bordeaux. The LMJ is designed to deliver about 1.4 MJ of 0.35 μm light to targets for high energy density physics experiments. Such an installation entails specific risks related to the presence of intense laser beams, and high voltage power laser amplifiers. Furthermore, the thermonuclear fusion reactions induced by the experiment also produce different radiations and neutrons burst and also activate some materials in the chamber environment. Both risks could be lethal. This presentation (paper) discusses the SSP (system for the personnel safety) that was designed to prevent accidents and protect personnel working in the LMJ. To achieve the security level imposed on us by labor law and by the French Safety Authority, the system consists of two independent safety barriers based on different technologies, whose combined effect can reduce to insignificant level the occurrence probability of all accidental scenarios identified during the risk analysis.  
WEPMU013 Development of a Machine Protection System for the Superconducting Beam Test Facility at FERMILAB controls, operation, status, FPGA 1084
  • L.R. Carmichael, M.D. Church, R. Neswold, A. Warner
    Fermilab, Batavia, USA
  Funding: Operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.
Fermilab’s Superconducting RF Beam Test Facility currently under construction will produce electron beams capable of damaging the acceleration structures and the beam line vacuum chambers in the event of an aberrant accelerator pulse. The accelerator is being designed with the capability to operate with up to 3000 bunches per macro-pulse, 5Hz repetition rate and 1.5 GeV beam energy. It will be able to sustain an average beam power of 72 KW at the bunch charge of 3.2 nC. Operation at full intensity will deposit enough energy in niobium material to approach the melting point of 2500 °C. In the early phase with only 3 cryomodules installed the facility will be capable of generating electron beam energies of 810 MeV and an average beam power that approaches 40 KW. In either case a robust Machine Protection System (MPS) is required to mitigate effects due to such large damage potentials. This paper will describe the MPS system being developed, the system requirements and the controls issues under consideration.
poster icon Poster WEPMU013 [0.755 MB]  
THCHAUST04 Management of Experiments and Data at the National Ignition Facility controls, target, experiment, diagnostics 1224
  • S.G. Azevedo, R.G. Beeler, R.C. Bettenhausen, E.J. Bond, A.D. Casey, H.C. Chandrasekaran, C.B. Foxworthy, M.S. Hutton, J.E. Krammen, J.A. Liebman, A.A. Marsh, T. M. Pannell, D.E. Speck, J.D. Tappero, A.L. Warrick
    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.
Experiments, or "shots", conducted at the National Ignition Facility (NIF) are discrete events that occur over a very short time frame (tens of ns) separated by hours. Each shot is part of a larger campaign of shots to advance scientific understanding in high-energy-density physics. In one campaign, energy from the 192-beam, 1.8-Megajoule pulsed laser in NIF will be used to implode a hydrogen-filled target to demonstrate controlled fusion. Each shot generates gigabytes of data from over 30 diagnostics that measure optical, x-ray, and nuclear phenomena from the imploding target. Because of the low duty cycle of shots, and the thousands of adjustments for each shot (target type, composition, shape; laser beams used, their power profiles, pointing; diagnostic systems used, their configuration, calibration, settings) it is imperative that we accurately define all equipment prior to the shot. Following the shot, and the data acquisition by the automatic control system, it is equally imperative that we archive, analyze and visualize the results within the required 30 minutes post-shot. Results must be securely stored, approved, web-visible and downloadable in order to facilitate subsequent publication. To-date NIF has successfully fired over 2,500 system shots, and thousands of test firings and dry-runs. We will present an overview of the highly-flexible and scalable campaign setup and management systems that control all aspects of the experimental NIF shot-cycle, from configuration of drive lasers all the way through presentation of analyzed results.
slides icon Slides THCHAUST04 [5.650 MB]  
THCHMUST01 Control System for Cryogenic THD Layering at the National Ignition Facility target, cryogenics, controls, hardware 1236
  • M.A. Fedorov, O.D. Edwards, E.A. Mapoles, J. Mauvais, T.G. Parham, R.J. Sanchez, J.M. Sater, B.A. 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 largest and most energetic laser system for Inertial Confinement Fusion (ICF). In 2010, NIF began ignition experiments using cryogenically cooled targets containing layers of the tritium-hydrogen-deuterium (THD) fuel. The 75 μm thick layer is formed inside of the 2 mm target capsule at temperatures of approximately 18 K. The ICF target designs require sub-micron smoothness of the THD ice layers. Formation of such layers is still an active research area, requiring a flexible control system capable of executing the evolving layering protocols. This task is performed by the Cryogenic Target Subsystem (CTS) of the NIF Integrated Computer Control System (ICCS). The CTS provides cryogenic temperature control with the 1 mK resolution required for beta layering and for the thermal gradient fill of the capsule. The CTS also includes a 3-axis x-ray radiography engine for phase contrast imaging of the ice layers inside of the plastic and beryllium capsules. In addition to automatic control engines, CTS is integrated with the Matlab interactive programming environment to allow flexibility in experimental layering protocols. The CTS Layering Matlab Toolbox provides the tools for layer image analysis, system characterization and cryogenic control. The CTS Layering Report tool generates qualification metrics of the layers, such as concentricity of the layer and roughness of the growth boundary grooves. The CTS activities are automatically coordinated with other NIF controls in the carefully orchestrated NIF Shot Sequence.
slides icon Slides THCHMUST01 [8.058 MB]