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Proceedings Paper

National Ignition Facility alignment and wavefront control
Author(s): Richard A. Zacharias; Neil Reginald Beer; Erlan S. Bliss; Scott C. Burkhart; Simon J. Cohen; Steven B. Sutton; R. Lewis Van Atta; Scott E. Winters; Joseph T. Salmon; Christopher J. Stolz; David C. Pigg; Timothy J. Arnold
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Paper Abstract

The National Ignition Facility (NIF) at the Lawrence Livermore National Laboratory is a stadium-sized facility containing a 192-beam, 1.8-Megajoule, 500-Terawatt, ultraviolet laser system. High-energy-density and inertial confinement fusion physics experiments require the ability to precisely align and focus pulses with single beam energy up to 20KJ in a few nanoseconds onto mm-sized targets. NIF's alignment control system now regularly provides automatic alignment of the four commissioned beams prior to every NIF shot in approximately 45min., and speed improvements are being implemented. NIF utilizes adaptive optics for wavefront control, which significantly improves the ability to tightly focus each laser beam onto a target. Multiple sources of both static and dynamic aberration are corrected. This presentation provides an overview of the NIF Automatic Alignment and Wavefront Control Systems including the accuracy and target spot size performance achieved.

Paper Details

Date Published: 28 May 2004
PDF: 12 pages
Proc. SPIE 5341, Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility, (28 May 2004); doi: 10.1117/12.538469
Show Author Affiliations
Richard A. Zacharias, Lawrence Livermore National Lab. (United States)
Neil Reginald Beer, Lawrence Livermore National Lab. (United States)
Erlan S. Bliss, Johnson Controls, Inc. (United States)
Scott C. Burkhart, Lawrence Livermore National Lab. (United States)
Simon J. Cohen, Lawrence Livermore National Lab. (United States)
Steven B. Sutton, Lawrence Livermore National Lab. (United States)
R. Lewis Van Atta, Lawrence Livermore National Lab. (United States)
Scott E. Winters, Lawrence Livermore National Lab. (United States)
Joseph T. Salmon, Lawrence Livermore National Lab. (United States)
Christopher J. Stolz, Lawrence Livermore National Lab. (United States)
David C. Pigg, Lawrence Livermore National Lab. (United States)
Timothy J. Arnold, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 5341:
Optical Engineering at the Lawrence Livermore National Laboratory II: The National Ignition Facility
Monya A. Lane; Craig R. Wuest, Editor(s)

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