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Title: Development of a high resolution x-ray spectrometer for the National Ignition Facility (NIF)

Abstract

A high resolution (E/ΔE = 1200-1800) Bragg crystal x-ray spectrometer is being developed to measure plasma parameters in National Ignition Facility experiments. The instrument will be a diagnostic instrument manipulator positioned cassette designed mainly to infer electron density in compressed capsules from Stark broadening of the helium-β (1s 2-1s3p) lines of krypton and electron temperature from the relative intensities of dielectronic satellites. Two conically shaped crystals will diffract and focus (1) the Kr Heβ complex and (2) the Heα (1s 2-1s2p) and Lyα (1s-2p) complexes onto a streak camera photocathode for time resolved measurement, and a third cylindrical or conical crystal will focus the full Heα to Heβ spectral range onto an image plate to provide a time integrated calibration spectrum. Calculations of source x-ray intensity, spectrometer throughput, and spectral resolution are presented. Furthermore, details of the conical-crystal focusing properties as well as the status of the instrumental design are also presented.

Authors:
 [1];  [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2];  [2];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2];  [2];  [2]; ORCiD logo [2];  [2];  [2];  [3] more »;  [4]; ORCiD logo [4];  [5] « less
  1. Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. General Atomics, San Diego, CA (United States)
  4. Univ. of Rochester, Rochester, NY (United States)
  5. Weizmann Institute of Science, Rehovot (Israel)
Publication Date:
Research Org.:
Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Contributing Org.:
Lawrence Livermore National Laboratory, Livermore, California 94551, USA General Atomics, San Diego, California 92121, USA Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623, USA Weizmann Institute of Science, Rehovot 76100, Israel
OSTI Identifier:
1340106
Grant/Contract Number:  
AC02-09CH11466; AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 87; Journal Issue: 11; Conference: 21st Topical Conference on High-Temperature Plasma Diagnostics, Madison, WI (United States), 5-9 Jun 2016; Journal ID: ISSN 0034-6748
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Hill, K. W., Bitter, M., Delgado-Aparicio, L., Efthimion, P. C., Ellis, R., Gao, L., Maddox, J., Pablant, N. A., Schneider, M. B., Chen, H., Ayers, S., Kauffman, R. L., MacPhee, A. G., Beiersdorfer, P., Bettencourt, R., Ma, T., Nora, R. C., Scott, H. A., Thorn, D. B., Kilkenny, J. D., Nelson, D., Shoup, III, M., and Maron, Y. Development of a high resolution x-ray spectrometer for the National Ignition Facility (NIF). United States: N. p., 2016. Web. doi:10.1063/1.4962053.
Hill, K. W., Bitter, M., Delgado-Aparicio, L., Efthimion, P. C., Ellis, R., Gao, L., Maddox, J., Pablant, N. A., Schneider, M. B., Chen, H., Ayers, S., Kauffman, R. L., MacPhee, A. G., Beiersdorfer, P., Bettencourt, R., Ma, T., Nora, R. C., Scott, H. A., Thorn, D. B., Kilkenny, J. D., Nelson, D., Shoup, III, M., & Maron, Y. Development of a high resolution x-ray spectrometer for the National Ignition Facility (NIF). United States. doi:10.1063/1.4962053.
Hill, K. W., Bitter, M., Delgado-Aparicio, L., Efthimion, P. C., Ellis, R., Gao, L., Maddox, J., Pablant, N. A., Schneider, M. B., Chen, H., Ayers, S., Kauffman, R. L., MacPhee, A. G., Beiersdorfer, P., Bettencourt, R., Ma, T., Nora, R. C., Scott, H. A., Thorn, D. B., Kilkenny, J. D., Nelson, D., Shoup, III, M., and Maron, Y. Wed . "Development of a high resolution x-ray spectrometer for the National Ignition Facility (NIF)". United States. doi:10.1063/1.4962053. https://www.osti.gov/servlets/purl/1340106.
@article{osti_1340106,
title = {Development of a high resolution x-ray spectrometer for the National Ignition Facility (NIF)},
author = {Hill, K. W. and Bitter, M. and Delgado-Aparicio, L. and Efthimion, P. C. and Ellis, R. and Gao, L. and Maddox, J. and Pablant, N. A. and Schneider, M. B. and Chen, H. and Ayers, S. and Kauffman, R. L. and MacPhee, A. G. and Beiersdorfer, P. and Bettencourt, R. and Ma, T. and Nora, R. C. and Scott, H. A. and Thorn, D. B. and Kilkenny, J. D. and Nelson, D. and Shoup, III, M. and Maron, Y.},
abstractNote = {A high resolution (E/ΔE = 1200-1800) Bragg crystal x-ray spectrometer is being developed to measure plasma parameters in National Ignition Facility experiments. The instrument will be a diagnostic instrument manipulator positioned cassette designed mainly to infer electron density in compressed capsules from Stark broadening of the helium-β (1s2-1s3p) lines of krypton and electron temperature from the relative intensities of dielectronic satellites. Two conically shaped crystals will diffract and focus (1) the Kr Heβ complex and (2) the Heα (1s2-1s2p) and Lyα (1s-2p) complexes onto a streak camera photocathode for time resolved measurement, and a third cylindrical or conical crystal will focus the full Heα to Heβ spectral range onto an image plate to provide a time integrated calibration spectrum. Calculations of source x-ray intensity, spectrometer throughput, and spectral resolution are presented. Furthermore, details of the conical-crystal focusing properties as well as the status of the instrumental design are also presented.},
doi = {10.1063/1.4962053},
journal = {Review of Scientific Instruments},
number = 11,
volume = 87,
place = {United States},
year = {2016},
month = {9}
}

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Works referenced in this record:

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