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20 December 2007 Final optics damage inspection (FODI) for the National Ignition Facility
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Abstract
The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory (LLNL) will routinely fire high energy shots (approaching 10 kJ per beamline) through the final optics, located on the target chamber. After a high fluence shot, exceeding 4J/cm2 at 351 nm wavelength, the final optics will be inspected for laser-induced damage. The FODI (Final Optics Damage Inspection) system has been developed for this purpose, with requirements to detect laser-induced damage initiation and to track and size it's the growth to the point at which the optic is removed and the site mitigated. The FODI system is the "corner stone" of the NIF optic recycle strategy. We will describe the FODI system and discuss the challenges to make optics inspection a routine part of NIF operations.
© (2007) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan Conder, Terry Alger, Stephen Azevedo, Jim Chang, Steven Glenn, Laura Kegelmeyer, Judith Liebman, Mary Spaeth, and Pam Whitman "Final optics damage inspection (FODI) for the National Ignition Facility", Proc. SPIE 6720, Laser-Induced Damage in Optical Materials: 2007, 672010 (20 December 2007); https://doi.org/10.1117/12.759131
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