New constraints for plasma diagnostics development due to the harsh environment of MJ class lasers (invited)

Journal Article · Fri Oct 01 04:00:00 EDT 2004 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1789610· OSTI ID:20641274

Bourgade, J L; Allouche, V; Baggio, J; Bayer, C; Bonneau, F; Chollet, C; Darbon, S; Disdier, L; Gontier, D; Houry, M; Jacquet, H P; Jadaud, J P; Leray, J L; Masclet-Gobin, I; Negre, J P; Raimbourg, J; Villette, B; Bertron, I; Chevalier, J M; Favier, J M ^[1]

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1. CEA/DIF, BP No. 12, 91680 Bruyeres le Chatel (France)

The design of plasma diagnostics for the future MJ class lasers (LMJ-Laser MegaJoule - in France or NIF - National Ignition Facility - in the USA) must take into account the large increased radiation field generated at the target and the effect on the diagnostics components. These facilities will focus up to 1.8 MJ ultraviolet laser light energy into a volume of less than 1 cm{sup 3} in a few nanoseconds. This very high power focused onto a small target will generate a large amount of x rays, debris, shrapnel, and nuclear particles (neutrons and gamma rays) if the DT fuel capsules ignite. Ignition targets will produce a million more of 14 MeV neutrons (10{sup 19} neutrons) by comparison with the present worldwide most powerful laser neutron source facility at OMEGA. Under these harsh environmental conditions the survivability goal of present diagnostic is not clear and many new studies must be carried out to verify which diagnostic measurement techniques, can be maintained, adapted or must be completely changed. Synergies with similar environment studies conducted for magnetic fusion diagnostic design for ITER facility are considered and must be enhanced.

• OSTI ID: 20641274
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 10 Vol. 75; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ITER TOKAMAK
MEV RANGE 10-100
NEUTRON SOURCE FACILITIES
PLASMA DIAGNOSTICS
PLASMA PRODUCTION
ULTRAVIOLET RADIATION
US NATIONAL IGNITION FACILITY