Cryogenic target system for hydrogen layering

Parham, T.; Kozioziemski, B.; Atkinson, D.; Baisden, P.; Bertolini, L.; Boehm, K; Chernov, A.; Coffee, K.; Coffield, F.; Dylla-Spears, R.; Edwards, O.; Fair, J.; Fedorov, M.; Fry, J.; Gibson, C.; Haid, B.; Holunga, D.; Kohut, T.; Lewis, T.; Malsbury, T.; Mapoles, E.; Sater, J.; Skulina, K.; Trummer, D.; Walters, C.

doi:10.13182/FST15-162

Title: Cryogenic target system for hydrogen layering

Journal Article · Tue Nov 24 00:00:00 EST 2015 · Fusion Science and Technology

DOI:https://doi.org/10.13182/FST15-162· OSTI ID:1281667

Parham, T. ^[1]; Kozioziemski, B. ^[1]; Atkinson, D. ^[1]; Baisden, P. ^[1]; Bertolini, L. ^[1]; Boehm, K ^[2]; Chernov, A. ^[1]; Coffee, K. ^[1]; Coffield, F. ^[1]; Dylla-Spears, R. ^[1]; Edwards, O. ^[1]; Fair, J. ^[1]; Fedorov, M. ^[1]; Fry, J. ^[1]; Gibson, C. ^[1]; Haid, B. ^[1]; Holunga, D. ^[1]; Kohut, T. ^[1]; Lewis, T. ^[3]; Malsbury, T. ^[1] more »

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
General Atomics, San Diego, CA (United States)
AKIMA Infrastructure Services, Livermore, CA (United States)

Here, a cryogenic target positioning system was designed and installed on the National Ignition Facility (NIF) target chamber. This instrument incorporates the ability to fill, form, and characterize the NIF targets with hydrogen isotopes needed for ignition experiments inside the NIF target bay then transport and position them in the target chamber. This effort brought to fruition years of research in growing and metrologizing high-quality hydrogen fuel layers and landed it in an especially demanding operations environment in the NIF facility. D-T (deuterium-tritium) layers for NIF ignition experiments have extremely tight specifications and must be grown in a very highly constrained environment: a NIF ignition target inside a cryogenic target positioner inside the NIF target bay. Exquisite control of temperature, pressure, contaminant level, and thermal uniformity are necessary throughout seed formation and layer growth to create an essentially-groove-free single crystal layer.

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Research Organization:: Lawrence Livermore National Lab., Livermore, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1281667

Report Number(s):: LLNL-JRNL-696377

Journal Information:: Fusion Science and Technology, Vol. 69, Issue 01; ISSN 1536-1055

Publisher:: American Nuclear SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 14 works

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References (22)

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Variable convergence liquid layer implosions on the National Ignition Facility Zylstra, A. B.; Yi, S. A.; Haines, B. M. Physics of Plasmas, Vol. 25, Issue 5 https://doi.org/10.1063/1.5016349	journal	May 2018

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