Cryogenic target system for hydrogen layering
Abstract
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.
- Authors:
-
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- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- General Atomics, San Diego, CA (United States)
- AKIMA Infrastructure Services, Livermore, CA (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab., Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1281667
- Report Number(s):
- LLNL-JRNL-696377
Journal ID: ISSN 1536-1055
- Grant/Contract Number:
- AC52-07NA27344
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Fusion Science and Technology
- Additional Journal Information:
- Journal Volume: 69; Journal Issue: 01; Journal ID: ISSN 1536-1055
- Publisher:
- American Nuclear Society
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; NIF; cryogenic; target positioner; tritium
Citation Formats
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., and Walters, C. Cryogenic target system for hydrogen layering. United States: N. p., 2015.
Web. doi:10.13182/FST15-162.
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. Cryogenic target system for hydrogen layering. United States. https://doi.org/10.13182/FST15-162
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., and Walters, C. 2015.
"Cryogenic target system for hydrogen layering". United States. https://doi.org/10.13182/FST15-162. https://www.osti.gov/servlets/purl/1281667.
@article{osti_1281667,
title = {Cryogenic target system for hydrogen layering},
author = {Parham, T. and Kozioziemski, B. and Atkinson, D. and Baisden, P. and Bertolini, L. and Boehm, K and Chernov, A. and Coffee, K. and Coffield, F. and Dylla-Spears, R. and Edwards, O. and Fair, J. and Fedorov, M. and Fry, J. and Gibson, C. and Haid, B. and Holunga, D. and Kohut, T. and Lewis, T. and Malsbury, T. and Mapoles, E. and Sater, J. and Skulina, K. and Trummer, D. and Walters, C.},
abstractNote = {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.},
doi = {10.13182/FST15-162},
url = {https://www.osti.gov/biblio/1281667},
journal = {Fusion Science and Technology},
issn = {1536-1055},
number = 01,
volume = 69,
place = {United States},
year = {Tue Nov 24 00:00:00 EST 2015},
month = {Tue Nov 24 00:00:00 EST 2015}
}
Web of Science
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Works referencing / citing this record:
Variable convergence liquid layer implosions on the National Ignition Facility
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