Alignment and diagnostics on the National Ignition Facility laser system

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The NIF laser system will be capable of delivering 1.8MJ of 351nm energy in 192 beams. Diagnostics instruments must measure beam energy, power vs. time, wavefront quality, and beam intensity profile to characterize laser performance. Alignment and beam diagnostics are also used to set the laser up for the high power shots and to isolate problems when performance is less than expected. Alignment and beam diagnostics are multiplexed to keep the costs under control. At the front-end the beam is aligned and diagnosed in an input sensor package. The output 1053nm beam is sampled by collecting a 0.1% reflection from ... continued below

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416 Kilobytes pages

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Bliss, E S; Boege, S J; Boyd, B; Demaret, R D; Feldman, M; Gates, A J et al. July 1, 1999.

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The NIF laser system will be capable of delivering 1.8MJ of 351nm energy in 192 beams. Diagnostics instruments must measure beam energy, power vs. time, wavefront quality, and beam intensity profile to characterize laser performance. Alignment and beam diagnostics are also used to set the laser up for the high power shots and to isolate problems when performance is less than expected. Alignment and beam diagnostics are multiplexed to keep the costs under control. At the front-end the beam is aligned and diagnosed in an input sensor package. The output 1053nm beam is sampled by collecting a 0.1% reflection from an output beam sampler and directing it to the output sensor package (OSP). The OSP also gets samples from final focus lens reflection and samples from the transport spatial filter pinhole plane. The output 351nm energy is measured by a calorimeter collecting the signal from an off-axis diffractive beam-sampler. Detailed information on the focused beam in the high-energy target focal plane region is gathered in the precision diagnostics. This paper describes the design of the alignment and diagnostics on the NIF laser system.

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416 Kilobytes pages

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  • 44th Annual Meeting of the International Symposium on Optical Science, Engineering, and Instrumentation, Denver, CO (US), 07/18/1999--07/23/1999

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  • Report No.: UCRL-JC-134596
  • Report No.: 39DP02000
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 9862
  • Archival Resource Key: ark:/67531/metadc794538

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • July 1, 1999

Added to The UNT Digital Library

  • Dec. 19, 2015, 7:14 p.m.

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  • May 5, 2016, 9:02 p.m.

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Bliss, E S; Boege, S J; Boyd, B; Demaret, R D; Feldman, M; Gates, A J et al. Alignment and diagnostics on the National Ignition Facility laser system, article, July 1, 1999; California. (digital.library.unt.edu/ark:/67531/metadc794538/: accessed June 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.