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Title: High convergence implosion symmetry in cylindrical hohlraums

Abstract

High convergence, hohlraum-driven implosions will require control of time-integrated drive asymmetries to 1% levels for ignition to succeed on the NIF. We review how core imaging provides such asymmetry measurement accuracy for the lowest order asymmetry modes, and describe recent improvements in imaging techniques that should allow detection of higher order asymmetry modes. We also present a simple analytic model explaining how the sensitivity of symmetry control to beam pointing scales as we progress from single ring per side Nova cylindrical hohlraum illumination geometries to NIF-like multiple rings per side Omega hohlraum illumination geometries and ultimately to NIF-scale hohlraums.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
USDOE Office of Defense Programs (DP) (US)
OSTI Identifier:
14591
Report Number(s):
UCRL-JC-135811; DP0210000
DP0210000; TRN: US0106176
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: First International Conference on Inertial Fusion Sciences and Applications, Bordeaux (FR), 09/12/1999--09/19/1999; Other Information: PBD: 1 Sep 1999
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; US NATIONAL IGNITION FACILITY; ASYMMETRY; CONVERGENCE; IGNITION; IMPLOSIONS; SENSITIVITY ANALYSIS

Citation Formats

Amendt, P A, Bradley, D K, Hammel, B A, Landen, O L, Suter, L J, Turner, R E, and Wallace, R J. High convergence implosion symmetry in cylindrical hohlraums. United States: N. p., 1999. Web.
Amendt, P A, Bradley, D K, Hammel, B A, Landen, O L, Suter, L J, Turner, R E, & Wallace, R J. High convergence implosion symmetry in cylindrical hohlraums. United States.
Amendt, P A, Bradley, D K, Hammel, B A, Landen, O L, Suter, L J, Turner, R E, and Wallace, R J. Wed . "High convergence implosion symmetry in cylindrical hohlraums". United States. https://www.osti.gov/servlets/purl/14591.
@article{osti_14591,
title = {High convergence implosion symmetry in cylindrical hohlraums},
author = {Amendt, P A and Bradley, D K and Hammel, B A and Landen, O L and Suter, L J and Turner, R E and Wallace, R J},
abstractNote = {High convergence, hohlraum-driven implosions will require control of time-integrated drive asymmetries to 1% levels for ignition to succeed on the NIF. We review how core imaging provides such asymmetry measurement accuracy for the lowest order asymmetry modes, and describe recent improvements in imaging techniques that should allow detection of higher order asymmetry modes. We also present a simple analytic model explaining how the sensitivity of symmetry control to beam pointing scales as we progress from single ring per side Nova cylindrical hohlraum illumination geometries to NIF-like multiple rings per side Omega hohlraum illumination geometries and ultimately to NIF-scale hohlraums.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {9}
}

Conference:
Other availability
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