Bulletin of the American Physical Society
64th Annual Meeting of the APS Division of Plasma Physics
Volume 67, Number 15
Monday–Friday, October 17–21, 2022; Spokane, Washington
Session PO04: Hohlraum and X-ray Cavity Physics
2:00 PM–4:48 PM,
Wednesday, October 19, 2022
Room: Ballroom 111 A
Chair: Dave Strozzi, LLNL; Steve MacLaren, LLNL
Abstract: PO04.00001 : Probing the origins of hohlraum wall losses in ICF
2:00 PM–2:12 PM
Presenter:
Michael S Rubery
(Lawrence Livermore National Laboratory)
Authors:
Michael S Rubery
(Lawrence Livermore National Laboratory)
Alastair S Moore
(Lawrence Livermore Natl Lab)
William A Farmer
(Lawrence Livermore Natl Lab)
Mordy Rosen
(Lawrence Livermore National Laboratory)
Otto L Landen
(Lawrence Livermore Natl Lab)
Marilyn B Schneider
(Lawrence Livermore Natl Lab)
Denise E Hinkel
(Lawrence Livermore National Laboratory)
James S Ross
(Lawrence Livermore Natl Lab)
Jamison Jew
(Lawrence Livermore National Laboratory)
Clay Henning
(Lawrence Livermore National Laboratory)
Martin Havre
(General Atomics)
Jason Wall
(General Atomics)
Waltteri Vakki
(General Atomics)
Fernando Silva
(General Atomics)
Mark Ratledge
(General Atomics)
Lorenzo Inandan
(General Atomics)
Vincent Ho
(General Atomics)
Eric Gaut
(General Atomics)
To investigate the origin of the multipliers an experiment has been designed to investigate the origin of energy loss to the Hohlraum wall by driving a Marshak wave through a 6um gold foil at conditions equivalent to those present in an ICF hohlraum. The arrival time of the Marshak wave, measured simultaneously by a soft x-ray streak camera and the upper-hemisphere Dante soft x-ray power diagnostic, is used to constrain the product of multipliers on both the heat capacity and opacity; foil drive conditions are monitored throughout the experiment by the lower Dante. With sufficient constraint on the foil thickness, burnthrough time and x-ray drive we show that wall-losses can be constrainted to < 5%.
This work was supported by the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344, supported by DOE Fusion Energy Sciences user FWP100182.
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