ICALEPCS2013 - List of Authors (Dupas, J.J.)

Paper

Title

Page

Laser MegaJoule Timing System

1457

J.I. Nicoloso
CEA/DAM/DIF, Arpajon, France
J.P.A. Arnoul, J.J. Dupas, P. Raybaut
CEA, Arpajon, France

The French Commissariat à l’Énergie Atomique et aux Énergies alternatives (CEA) is currently building the Laser Megajoule (LMJ). This facility is designed to deliver laser energy to targets for high energy density physics experiments, including fusion experiments. The Integrated Timing and Triggering System (ITTS) is one of the critical LMJ components, in charge of timing distribution for synchronizing the laser beams and triggering the shot data acquisitions. The LMJ ITTS Control System provides a single generic interface to its users at the Supervisory level, built around the key concept of “Synchronized Channels Group”, a set of delay channels triggered simultaneously. Software common components provide basic mechanisms: communication with its users, channel registration User-defined delays are specified with respect to a given reference(target chamber center, quadruplet or beam reference times), these delays are then translated into hardware delays according to different parameters such as electronic cards temperatures(for thermal drift correction) and transit delays. Equipments are mainly off-the-shelf timing equipments delivering trigger signals with jitter down to 15ps rms.

Slides THCOCA05 [0.974 MB]

Paper	Title	Page
THCOCA05	Laser MegaJoule Timing System	1457
	J.I. Nicoloso CEA/DAM/DIF, Arpajon, France J.P.A. Arnoul, J.J. Dupas, P. Raybaut CEA, Arpajon, France
	The French Commissariat à l’Énergie Atomique et aux Énergies alternatives (CEA) is currently building the Laser Megajoule (LMJ). This facility is designed to deliver laser energy to targets for high energy density physics experiments, including fusion experiments. The Integrated Timing and Triggering System (ITTS) is one of the critical LMJ components, in charge of timing distribution for synchronizing the laser beams and triggering the shot data acquisitions. The LMJ ITTS Control System provides a single generic interface to its users at the Supervisory level, built around the key concept of “Synchronized Channels Group”, a set of delay channels triggered simultaneously. Software common components provide basic mechanisms: communication with its users, channel registration User-defined delays are specified with respect to a given reference(target chamber center, quadruplet or beam reference times), these delays are then translated into hardware delays according to different parameters such as electronic cards temperatures(for thermal drift correction) and transit delays. Equipments are mainly off-the-shelf timing equipments delivering trigger signals with jitter down to 15ps rms.
	Slides THCOCA05 [0.974 MB]