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Title: Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility

Abstract

An optical Thomson scattering diagnostic has been designed for the National Ignition Facility to characterize under-dense plasmas. Here, we report on the design of the system and the expected performance for different target configurations. The diagnostic is designed to spatially and temporally resolve the Thomson scattered light from laser driven targets. The diagnostic will collect scattered light from a 50 × 50 × 200 μm volume. The optical design allows operation with different probe laser wavelengths. A deep-UV probe beam (λ0 = 210 nm) will be used to Thomson scatter from electron plasma densities of ~5 × 1020 cm-3 while a 3ω probe will be used for plasma densities of ~1 × 1019 cm-3. The diagnostic package contains two spectrometers: the first to resolve Thomson scattering from ion acoustic wave fluctuations and the second to resolve scattering from electron plasma wave fluctuations. Expected signal levels relative to background will be presented for typical target configurations (hohlraums and a planar foil).

Authors:
 [1];  [1];  [1];  [1]; ORCiD logo [2];  [3];  [1];  [2];  [4]; ORCiD logo [1];  [1];  [1];  [5];  [1]; ORCiD logo [1]; ORCiD logo [6]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. General Atomics, San Diego, CA (United States)
  5. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  6. Naval Research Lab. (NRL), Washington, DC (United States). Plasma Physics Division
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1360159
Grant/Contract Number:  
AC02-76SF00515; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Electron scattering; Electrostatic waves; Hohlraum; Plasma temperature; Plasma density

Citation Formats

Ross, J. S., Datte, P., Divol, L., Galbraith, J., Froula, D. H., Glenzer, S. H., Hatch, B., Katz, J., Kilkenny, J., Landen, O., Manuel, A. M., Molander, W., Montgomery, D. S., Moody, J. D., Swadling, G., and Weaver, J. Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility. United States: N. p., 2016. Web. https://doi.org/10.1063/1.4959568.
Ross, J. S., Datte, P., Divol, L., Galbraith, J., Froula, D. H., Glenzer, S. H., Hatch, B., Katz, J., Kilkenny, J., Landen, O., Manuel, A. M., Molander, W., Montgomery, D. S., Moody, J. D., Swadling, G., & Weaver, J. Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility. United States. https://doi.org/10.1063/1.4959568
Ross, J. S., Datte, P., Divol, L., Galbraith, J., Froula, D. H., Glenzer, S. H., Hatch, B., Katz, J., Kilkenny, J., Landen, O., Manuel, A. M., Molander, W., Montgomery, D. S., Moody, J. D., Swadling, G., and Weaver, J. Thu . "Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility". United States. https://doi.org/10.1063/1.4959568. https://www.osti.gov/servlets/purl/1360159.
@article{osti_1360159,
title = {Simulated performance of the optical Thomson scattering diagnostic designed for the National Ignition Facility},
author = {Ross, J. S. and Datte, P. and Divol, L. and Galbraith, J. and Froula, D. H. and Glenzer, S. H. and Hatch, B. and Katz, J. and Kilkenny, J. and Landen, O. and Manuel, A. M. and Molander, W. and Montgomery, D. S. and Moody, J. D. and Swadling, G. and Weaver, J.},
abstractNote = {An optical Thomson scattering diagnostic has been designed for the National Ignition Facility to characterize under-dense plasmas. Here, we report on the design of the system and the expected performance for different target configurations. The diagnostic is designed to spatially and temporally resolve the Thomson scattered light from laser driven targets. The diagnostic will collect scattered light from a 50 × 50 × 200 μm volume. The optical design allows operation with different probe laser wavelengths. A deep-UV probe beam (λ0 = 210 nm) will be used to Thomson scatter from electron plasma densities of ~5 × 1020 cm-3 while a 3ω probe will be used for plasma densities of ~1 × 1019 cm-3. The diagnostic package contains two spectrometers: the first to resolve Thomson scattering from ion acoustic wave fluctuations and the second to resolve scattering from electron plasma wave fluctuations. Expected signal levels relative to background will be presented for typical target configurations (hohlraums and a planar foil).},
doi = {10.1063/1.4959568},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {7}
}

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Works referenced in this record:

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