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Title: Effects of fuel-capsule shimming and drive asymmetry on inertial-confinement-fusion symmetry and yield

Three orthogonal proton emission imaging cameras were used to study the 3D effects of low-mode drive asymmetries and target asymmetries on nuclear burn symmetry and yield in direct-drive, inertial-confinement-fusion experiments. The fusion yield decreased quickly as the burn region became asymmetric due to either drive or capsule asymmetry. Furthermore, measurements and analytic scaling are used to predict how intentionally asymmetric capsule shells could improve performance by compensating for drive asymmetry when it cannot be avoided (such as with indirect drive or with polar direct drive).
Authors:
 [1] ;  [1] ;  [2] ; ORCiD logo [1] ;  [3] ; ORCiD logo [1] ;  [4] ;  [5] ;  [4] ;  [4] ; ORCiD logo [4] ;  [6] ;  [7]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); AREVA, Inc., Lynchburg, VA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  4. Univ. of Rochester, Rochester, NY (United States)
  5. Univ. of Rochester, Rochester, NY (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. General Atomics, San Diego, CA (United States)
  7. General Atomics, San Diego, CA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
OSTI Identifier:
1260829
Report Number(s):
LLNL-JRNL-697139
Journal ID: ISSN 1070-664X; PHPAEN
Grant/Contract Number:
NA0002726; FG03-03SF22691; NA0002949; NA0001857; AC52-07NA27344
Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 3; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Research Org:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; X-ray imaging; asymmetric matters; Helim-3; image sensors; cameras; 01 COAL, LIGNITE, AND PEAT; Helium-3; 42 ENGINEERING; 70 PLASMA PHYSICS AND FUSION; helium-3