Installation alignment of a multi-beam ICF target illumination system

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Target illumination systems for inertial confinement fusion (ICF) experiments require precise alignment of a multitude of mirrors, usually spherically arranged around the ICF target. The mechanical support structure for these mirrors generally consists of a large space frame with many voids. This makes direct alignment or boresighting impossible, since alignment instruments and references cannot be placed at the coordinate centers representing the mirror arrays or focal points. Nevertheless, the structural members must be accurately aligned during the assembly phase, to provide the focusing precision required by the completed illumination system. This paper describes the techniques used to assemble and align ... continued below

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Pages: 8

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Bauke, W. & Stahl, D.B. January 1, 1985.

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Description

Target illumination systems for inertial confinement fusion (ICF) experiments require precise alignment of a multitude of mirrors, usually spherically arranged around the ICF target. The mechanical support structure for these mirrors generally consists of a large space frame with many voids. This makes direct alignment or boresighting impossible, since alignment instruments and references cannot be placed at the coordinate centers representing the mirror arrays or focal points. Nevertheless, the structural members must be accurately aligned during the assembly phase, to provide the focusing precision required by the completed illumination system. This paper describes the techniques used to assemble and align the Antares Laser space frame where a total of 48 mirrors fold and focus 24 laser beams onto the ICF target, within a 7.3 meter space frame. The alignment procedures described use optical tooling and test techniques supplemented by surveying instruments and auxiliary devices, as required by the unique geometry of the space frame.

Physical Description

Pages: 8

Notes

NTIS, PC A02/MF A01; 1.

Source

  • Southwest conference on optics, Albuquerque, NM, USA, 4 Mar 1985

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  • Other: DE85015677
  • Report No.: LA-UR-85-2351
  • Report No.: CONF-850345-30
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5292352
  • Archival Resource Key: ark:/67531/metadc1070297

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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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Creation Date

  • January 1, 1985

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

Description Last Updated

  • March 29, 2018, 1:13 p.m.

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Bauke, W. & Stahl, D.B. Installation alignment of a multi-beam ICF target illumination system, article, January 1, 1985; United States. (digital.library.unt.edu/ark:/67531/metadc1070297/: accessed May 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.