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| MOC001 |
LLRF System Requirement Engineering for the European XFEL
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13 |
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- Z. Geng, G. Ayvazyan, M. K. Grecki, S. Simrock
DESY, Hamburg
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The LLRF system of the European XFEL must fulfill the requirements of various stakeholders: Photon beam users, accelerator operators, rf experts, controls system, beam diagnostics and many others. Besides stabilizing the accelerating fields the system must be easy to operate, to maintain, and to upgrade. Furthermore it must guarantee high availability and it must be well understood. The development, construction, commissioning and operation with an international team requires excellent documentation of the requirements, designs and acceptance test. For the RF control system of the XFEL the new system modelling language SySML has been chosen to facilitate the system engineering and to document the system. SysML uses 9 diagram types to describe the structure and behavior of the system. The hierarchy of the diagrams allows individual task managers to develop detailed subsystem descriptions in a consistent framework. We present the description of functional and non-functional requirements, the system design and the test cases. An attempt of costing the software effort based on the use case point analysis is also presented.
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Slides
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| MOC002 |
Strategy for the Integration of the LMJ (Laser Megajoule) Control System
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16 |
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- F. P. Signol, J. C. Picon
CESTA, Le Barp
- P. J. Betremieux, J. J. Dupas, J. I. Nicoloso
CEA, Arpajon
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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 1.8 MJ of 0.35 0m light to targets for high energy density physics experiments. CEA has imposed an industrial policy by dividing the LMJ development and construction into a dozen major contracts. Each of these contracts supplies the hardware (e.g. Capacitor bank) and the associated control System. CEA is the project manager of the centralized supervisor and the communication protocols between the several subsystems. CEA is also responsible for the integration of the subsystems which is a major challenge. This presentation discusses the integration strategy. It is a three step process, each taking place in a different site: factory acceptance tests at the subsystem level, Integration tests of the whole control system on a dedicated 'Integration Platform', and finally on site tests from an 'integration control room' (which is different from the operation control). This paper will describe the necessary integration and simulation tools and the tasks related to the three steps.
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Slides
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| MOC003 |
SOLEIL Control and Acquisition Hardware Installation and Maintenance Management
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19 |
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- P. Betinelli, M. Abdelbaki, Y.-M. Abiven, J. Bisou, F. Blache, D. Corruble, P. Monteiro, G. Renaud, J. P. Ricaud
SOLEIL, Gif-sur-Yvette
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SOLEIL is a third generation Synchrotron radiation source located in France near Paris. The construction began in 2002. Now, the Storage Ring delivers photon beam to 20 beamlines with global reliability better than 95%. In a few years, we have installed and deployed many hardware equipments: 145 CPCI systems, 175 PLC systems, 154 Motion Systems. Around 6000 cables are connected to our hardware equipments. We are distributing around 600 timing signals, driving more than 760 motors, and piloting more than 500 IO CPCI boards. To achieve the high reliability required, we have applied industrial installation and maintenance methods. From the beginning we have defined standard products and connexions, installation procedures, PV forms… Configurations, Cabling Folders and PV forms are saved in an EDMS (Engineering document management system). We use a CMMS (computerized maintenance management system) to inventory, localize and keep the history of the installed equipments. Each intervention is reported in it to follow the demands of evolutions, the maintenance, the problems and interventions. The result of this organization is a control and acquisition hardware's availability of 99,98%.
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Slides
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| MOC004 |
Controls Request Tracker
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1 |
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- K. S. White, S. M. Hartman, K.-U. Kasemir
ORNL, Oak Ridge, Tennessee
- I. Verstovsek
Cosylab, Ljubljana
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Funding: SNS is managed by UT-Battelle, LLC, under contract DE-AC05-00OR22725 for the U. S. Department of Energy
Controls groups at large accelerators are routinely called upon to build and support controls for virtually all machine systems. While construction projects within the US DOE system are normally carefully planned and tracked by project management professionals, this support ends when construction milestones are met. However, once construction is complete, work continues as the group performs ongoing support and maintenance while also implementing requested system improvements and upgrades. With customers from virtually every accelerator and experiment group, the demands on the group often exceed the capacity of available resources. This type of diverse workload needs to be well organized and managed in order set proper priorities and ensure efficient use of resources. At SNS, we have collaborated with Cosylab to develop Controls Request Tracker (CRT), which is adapted from the Cosylab Project Manager (CPM) software. The resulting system not only provides standard request tracking features, but is interfaced to the SNS Logbook and work control system. This paper will discuss CRT and how we use it to manage the work of our controls group.
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Slides
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| MOC005 |
Development of the ITER CODAC Core Systems
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22 |
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- F. Di Maio, J. Y. Journeaux, W.-D. Klotz, K. Mahajan, P. Makijarvi, D. Stepanov, N. Utzel, A. Wallander
ITER, St Paul lez Durance
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The duration of the construction period for ITER is ten years, from 2008. The procurement model is such that the ITER Plant Systems will mostly be provided 'in kind' to be integrated into the ITER control infrastructure. In the coming three years, the earliest plant systems will be built and some test facilities will also be required. As a result, the CODAC group (Controls, Data Access & Communications) is already preparing the systems that implement the core functions such as operator interface, alarms handling, communications or data storage, in incremental versions, reduced and tailored for the development and tests of the plant systems before integration. The work is executed in partnership with labs and industries from the ITER parties and has to be organized as a continuous process to match the consecutive integration and commissioning phases of the ITER project. This paper reports on these tasks, including schedules and decisions, with details on two systems named Plant System Host and Mini-CODAC.
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Slides
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| MOC006 |
Towards Model Re-usability for the Development of Telescope Control Systems
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25 |
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- R. Karban, L. Andolfato, M. Zamparelli
ESO, Garching bei Muenchen
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During the life-cycle of a project, the development team often discovers similarities among system components within the same or previous projects, with the potential for cost and time savings. We have encountered this discovery mechanism also in the telescope control system domain. The overall development effort can be dramatically reduced by reusing the different modeling artifacts like core requirements, functional design, and structural design. The paper illustrates some results, using the Active Phasing Experiment (APE) project as a case-study, where modeling is used as key technique to identify common system properties. APE is an opto-mechatronical technology demonstrator which was installed on the Very Large Telescope (VLT) at the Paranal observatory. When moving along a vertical cut from implementation to requirements we observed an increase of re-usability with increasing abstraction level requiring different approaches for capturing commonalities. An adequately tailored modeling strategy and an application framework based on state machines are used to create a repository of reusable artifacts with SysML and UML.
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Slides
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