Opacity spectrometer design for opacity measurements at the National Ignition Facility

P. W. Ross; M. F. Ahmed; J. E. Bailey; G. S. Dunham; J. A. Emig; R. F. Heeter; E. J. Huffman; T. S. Perry; Y. P. Opachich; D. A. Liedahl; M. Schneider; G. F. Stone

doi:10.1117/12.2188579

31 August 2015 Opacity spectrometer design for opacity measurements at the National Ignition Facility

P. W. Ross, M. F. Ahmed, J. E. Bailey, G. S. Dunham, J. A. Emig, R. F. Heeter, E. J. Huffman, T. S. Perry, Y. P. Opachich, D. A. Liedahl, M. Schneider, G. F. Stone

Author Affiliations +

Proceedings Volume 9591, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion IV; 95910I (2015) https://doi.org/10.1117/12.2188579
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The National Ignition Facility (NIF) Opacity Spectrometer (OpSpec) is a modular spectrometer designed initially for opacity experiments on NIF. The design of the OpSpec is presented in light of the requirements and constraints. Potential dispersing elements and detector configurations are presented, and the advantages and disadvantages of each configuration are discussed. The full OpSpec design covers the energy range from approximately 550 eV to 2 keV. The energy resolution of the OpSpec is E/ΔE > 500. Applications of the OpSpec are discussed, including relevant astrophysical applications for NIF experiments, and will compliment recently published work on the Z machine. (Bailey, et al., Nature 517, 56-59 (2015).) This work was done by National Security Technologies, LLC, under Contract No. DE-AC52-06NA25946 with the U.S. Department of Energy.

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P. W. Ross, M. F. Ahmed, J. E. Bailey, G. S. Dunham, J. A. Emig, R. F. Heeter, E. J. Huffman, T. S. Perry, Y. P. Opachich, D. A. Liedahl, M. Schneider, and G. F. Stone "Opacity spectrometer design for opacity measurements at the National Ignition Facility", Proc. SPIE 9591, Target Diagnostics Physics and Engineering for Inertial Confinement Fusion IV, 95910I (31 August 2015); https://doi.org/10.1117/12.2188579

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