Effect of amplifier component maintenance on laser system availability and reliability for the US National Ignition Facility

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We have analyzed the availability and reliability of the flashlamp- pumped, Nd:glass amplifiers that, as a part of a laser now being designed for future experiments, in inertial confinement fusion (ICF), will be used in the National Ignition Facility (NIF). Clearly , in order for large ICF systems such as the NIF to operate effectively as a whole, all components must meet demanding availability and reliability requirements. Accordingly, the NIF amplifiers can achieve high reliability and availability by using reliable parts, and by using a cassette-based maintenance design that allows most key amplifier parts to be 1744 replaced within a ... continued below

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13 p.

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Erlandson, A.C.; Lambert, H. & Zapata, L.E. December 1, 1996.

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Description

We have analyzed the availability and reliability of the flashlamp- pumped, Nd:glass amplifiers that, as a part of a laser now being designed for future experiments, in inertial confinement fusion (ICF), will be used in the National Ignition Facility (NIF). Clearly , in order for large ICF systems such as the NIF to operate effectively as a whole, all components must meet demanding availability and reliability requirements. Accordingly, the NIF amplifiers can achieve high reliability and availability by using reliable parts, and by using a cassette-based maintenance design that allows most key amplifier parts to be 1744 replaced within a few hours. In this way, parts that degrade slowly, as the laser slabs, silver reflectors, and blastshields can be expected to do, based on previous experience, can be replaced either between shots or during scheduled maintenance periods, with no effect on availability or reliability. In contrast, parts that fail rapidly, such as the flashlamps, can and do cause unavailability or unreliability. Our analysis demonstrates that the amplifiers for the NIF will meet availability and reliability goals, respectively, of 99.8% and 99.4%, provided that the 7680 NIF flashlamps in NIF have failure rates of less than, or equal to, those experienced on Nova, a 5000-lamp laser at Lawrence Livermore National Laboratory (LLNL).

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13 p.

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INIS; OSTI as DE97051669

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  • 2. annual solid state lasers for applications to inertial confinement fusion (ICF), Paris (France), 22-25 Oct 1996

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  • Other: DE97051669
  • Report No.: UCRL-JC--124911
  • Report No.: CONF-9610225--9
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 462874
  • Archival Resource Key: ark:/67531/metadc674866

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  • December 1, 1996

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  • July 25, 2015, 2:21 a.m.

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  • Feb. 16, 2016, 6:33 p.m.

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Erlandson, A.C.; Lambert, H. & Zapata, L.E. Effect of amplifier component maintenance on laser system availability and reliability for the US National Ignition Facility, article, December 1, 1996; California. (digital.library.unt.edu/ark:/67531/metadc674866/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.