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Indirect drive experiments utilizing multiple beam cones in cylindrical hohlraums on OMEGA

Authors :
J. A. Koch
R. J. Wallace
C. Decker
P. L. Gobby
Cris W. Barnes
Glenn R. Magelssen
J. Wallace
J. B. Moore
Otto Landen
John A. Oertel
J. P. Knauer
Robert Kremens
R. E. Turner
Allan Hauer
E. L. Lindman
D. K. Bradley
Robert G. Watt
N. D. Delamater
R. S. Craxton
Thomas J. Murphy
F. J. Marshall
M. D. Cable
L. J. Suter
Jeremy D. Schnittman
Peter Amendt
B. A. Hammel
R. L. Keck
Source :
Scopus-Elsevier
Publication Year :
1998
Publisher :
AIP Publishing, 1998.

Abstract

Current plans for time-dependent control of flux asymmetry in the National Ignition Facility [J. A. Paisner, J. D. Boyes, S. A. Kumpan, and M. Sorem, “The National Ignition Facility Project,” ICF Quart. 5, 110 (1995)] hohlraums rely on multiple beam cones with different laser power temporal profiles in each cone. Experiments with multiple beam cones have begun on the Omega laser facility [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] at the University of Rochester. In addition to allowing symmetry experiments similar to those performed on Nova [A. Hauer et al., Rev. Sci. Instrum. 66, 672 (1995)], the Omega facility allows multiple beam cones to be moved independently to confirm our ability to model the resulting implosion image shapes. Results indicate that hohlraum symmetry behaves similarly with multiple rings of beams as with a single ring, but with the weighted beam spot position used to parametrize the beam pointing.

Details

ISSN :
10897674 and 1070664X
Volume :
5
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi.dedup.....da698aeab4d610d5e7ea87609292e0aa
Full Text :
https://doi.org/10.1063/1.872866