ICALEPCS2011 - List of Authors (Arnoul, J.P.A.)

Paper

Title

Page

The Laser MegaJoule Facility: Control System Status Report

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 TUDAUST05 [9.215 MB]

WEPMU009

The Laser MégaJoule Facility: Personnel Security and Safety Interlocks

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.

Paper	Title	Page
TUDAUST05	The Laser MegaJoule Facility: Control System Status Report	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 TUDAUST05 [9.215 MB]

WEPMU009	The Laser MégaJoule Facility: Personnel Security and Safety Interlocks	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.