Final optic protection designs for ICF containment chambers

Conference · Wed Mar 01 04:00:00 EST 1989 · Fusion Technol.; (United States)

OSTI ID:6244077

Nilson, D G; Woodworth, J G

The output from a laser-driven high-gain ICF target in the laboratory microfusion facility (LMF) target chamber could produce enough x-rays, shrapnel, and debris to severely damage the laser's final optics. If the final optics were left unprotected, the replacement and reinstallation costs for each beam would exceed $40K. Assuming the laser has 68 beams, the replacement costs for each shot could reach $2.7M. To avoid these excessive costs, a reliable optics protection system must be designed. This requires that the hazardous environment to which the optics are exposed be defined. The geometrical layout for the 68 beams of the 10 megajoule laser shows the final optics placed at 25 meters from the target. The final optic is a 2-5 cm thick debris shield ($40K each), placed in front of a $200K focussing lens. Each of the 68 beams delivers 150 kJ of 0.35 ..mu..m light consisting of either a 4 x 4 or a 2 x 8 array of beamlets, with each beamlet aperture having dimensions of 29 cm x 29 cm.

• Research Organization: Lawrence Livermore National Lab., Livermore National Lab. (US)
• OSTI ID: 6244077
• Report Number(s): CONF-881031-
• Conference Information: Journal Name: Fusion Technol.; (United States) Journal Volume: 15:2
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700201 -- Fusion Power Plant Technology-- Blanket Engineering
700206* -- Fusion Power Plant Technology-- Environmental Aspects
700208 -- Fusion Power Plant Technology-- Inertial Confinement Technology
ACCELERATOR FACILITIES
BEAM OPTICS
CONFINEMENT
CONTAINMENT
COST
DESIGN
EQUIPMENT PROTECTION DEVICES
INERTIAL CONFINEMENT
LASER-PRODUCED PLASMA
LASERS
PHYSICAL RADIATION EFFECTS
PLASMA
PLASMA CONFINEMENT
PLASMA DIAGNOSTICS
RADIATION EFFECTS
SHIELDS
TARGET CHAMBERS