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NIF optics phase gradient specfication [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy, 1997.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
27 pages : digital, PDF file
Additional Creators
Lawrence Livermore National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
A root-mean-square (rms) phase gradient specification seems to allow a good connection between the NIP optics quality and focal spot requirements. Measurements on Beamlet optics individually, and as a chain, indicate they meet the assumptions necessary to use this specification, and that they have a typical rms phase gradient of ∼80 Å/cm. This may be sufficient for NIP to meet the proposed Stockpile Stewardship Management Program (SSMP) requirements of 80% of a high- power beam within a 200-250 micron diameter spot. Uncertainties include, especially, the scale length of the optics phase noise, the ability of the adaptive optic to correct against pump-induced distortions and optics noise, and the possibility of finding mitigation techniques against whole-beam self-focusing (e.g. a pre- correction optic). Further work is needed in these areas to better determine the NIF specifications. This memo is a written summary of a presentation on this topic given by W. Williams 24 April 1997 to NIP and LS&T personnel.
Report Numbers
E 1.99:ucrl-id--127297
ucrl-id--127297
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
05/02/1997.
"ucrl-id--127297"
"DE98050716"
Williams, W.; Hunt, J.; Orth, C.; Lawson, L.; Wegner, P.; Auerbach, J.; Manes, K.; Sacks, R.; Trenholme, J.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 14739845