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| MOAB01 |
The Status of the LHC Controls System Shortly Before Injection of Beam
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5 |
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- P. Charrue, H. Schmickler
CERN, Geneva
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At the time of the ICALEPCS 2007 conference, the LHC main accelerator will be close to its final state of installation, and major components will have passed the so-called “hardware commissioning.” In this paper the requirements and the main components of the LHC control system will be described very briefly. Out of its classical 3-tier architecture, those solutions will be presented, which correspond to major development work done here at CERN. Focus will be given to the present status of these developments and to lessons learned in the past months.
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Slides
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| MOAB02 |
The Laser Megajoule Facility: Control System Status Report
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10 |
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- J. P. Arnoul, J. J. Dupas, J. I. Nicoloso, P. J. Betremieux
CEA, Bruyères-le-Châtel
- F. P. Signol
CESTA, Le Barp
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The French Commissariat à l'Énergie Atomique (CEA) is currently building the Laser MegaJoule (LMJ), a 240-beam laser facility, at the CEA Laboratory CESTA near Bordeaux. LMJ will be a cornerstone of CEA's "Programme Simulation," the French Stockpile Stewardship Program. LMJ is designed to deliver about 2 MJ of 0.35 μm light to targets for high energy density physics experiments, including fusion experiments. LMJ technological choices were validated with the Ligne d'Intégration Laser (LIL), a scale 1 prototype of one LMJ bundle, built at CEA/CESTA. Plasma experiments started at the end of 2004 on LIL. The construction of the LMJ building itself started in March 2003. An important milestone was successfully achieved in November 2006 with the introduction of the target chamber into the building. LMJ will be gradually commissioned from 2011 and will then begin an experimental program toward fusion. The presentation discusses LIL experience feedback, transverse requirements intended to ultimately federate control packages from different contractors, strategy for developing the Centralized Supervisory Controls, and process for computer control system global integration.
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Slides
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| MOAB03 |
Trends in Software for Large Astronomy Projects
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13 |
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- K. K. Gillies
Gemini Observatory, Southern Operations Center, Tucson, AZ
- B. D. Goodrich, S. B. Wampler
Advanced Technology Solar Telescope, National Solar Observatory, Tucson
- J. M. Johnson, K. McCann
W. M. Keck Observatory, Kamuela
- S. Schumacher
National Optical Astronomy Observatories, La Serena, Chile
- D. R. Silva
AURA/Thirty Meter Telescope, Pasadena/CA
- A. Wallander, G. Chiozzi
ESO, Garching bei Muenchen
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The current 8-10M ground-based telescopes require complex real-time control systems that are large, distributed, fault-tolerant, integrated, and heterogeneous. New challenges are on the horizon with new instruments, AO, laser guide stars, and the next generation of even larger telescopes. These projects are characterized by increasing complexity, where requirements cannot be met in isolation due to the high coupling between the components in the control and acquisition chain. Additionally, the high cost for the observing time imposes very challenging requirements in terms of system reliability and observing efficiency. The challenges presented by the next generation of telescopes go beyond a matter of scale and may even require a change in paradigm. Although our focus is on control systems, it is essential to keep in mind that this is just one of the several subsystems integrated in the whole observatory end-to-end operation. In this paper we show how the astronomical community is responding to these challenges in the software arena. We analyze the evolution in control system architecture and software infrastructure, looking into the future for these two generations of projects.
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Slides
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