10 September 2009 Optomechanical design of a prompt gamma reaction history diagnostic
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The National Ignition Facility and the Omega Laser Facility both have a need for measuring prompt gamma radiation as part of a nuclear diagnostic program. A new gamma-detection diagnostic using off-axis-parabolic mirrors has been built. Some new techniques were used in the design, construction, and tolerancing of this gamma ray diagnostic. Because of the wavelength requirement (250 to 700 nm), the optical element surface finishes were a key design consideration. The optical enclosure had to satisfy pressure safety concerns and shielding against electromagnetic interference induced by gammas and neutrons. Structural finite element analysis was needed to meet rigorous optical and safety requirements. The optomechanical design is presented. Alignment issues are also discussed.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Morris I. Kaufman, Morris I. Kaufman, Robert M. Malone, Robert M. Malone, Brent C. Frogget, Brent C. Frogget, Thomas W. Tunnell, Thomas W. Tunnell, Brian Cox, Brian Cox, Daniel K. Frayer, Daniel K. Frayer, Zaheer Ali, Zaheer Ali, Hans Herrmann, Hans Herrmann, Wolfgang Stoeffl, Wolfgang Stoeffl, } "Optomechanical design of a prompt gamma reaction history diagnostic", Proc. SPIE 7424, Advances in Optomechanics, 74240M (10 September 2009); doi: 10.1117/12.825117; https://doi.org/10.1117/12.825117

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