Convex Crystal X-ray Spectrometer for Laser Plasma Experiments
Abstract
Measuring time and space-resolved spectra is important for understanding Hohlraum and Halfraum plasmas. Experiments at the OMEGA laser have used the Nova TSPEC which was not optimized for the OMEGA diagnostic space envelope or for the needed spectroscopic coverage and resolution. An improved multipurpose spectrometer snout, the MSPEC, has been constructed and fielded on OMEGA. The MSPEC provides the maximal internal volume for mounting crystals without any beam interferences at either 2x or 3x magnification. The RAP crystal is in a convex mounting geometry bent to a 20 cm radius of curvature. The spectral resolution, E/dE, is about 200 at 2.5 keV. The spectral coverage is 2 to 4.5 keV. The MSPEC can record four separate spectra on the framing camera at time intervals of up to several ns. The spectrometer design and initial field-test performance will be presented and compared to that of the TSPEC. Work supported by U. S. DoE/UC LLNL contract W-7405-ENG-48
- Authors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 15014101
- Report Number(s):
- UCRL-CONF-203584
Journal ID: ISSN 0034-6748; TRN: US0802049
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Conference
- Resource Relation:
- Journal Volume: 75; Journal Issue: 10; Conference: Presented at: 15th Topical Conference on High-Temperature Plasma Diagnostics, San Diego, CA, United States, Apr 19 - Apr 22, 2004
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION; 74 ATOMIC AND MOLECULAR PHYSICS; 42 ENGINEERING; CAMERAS; DESIGN; GEOMETRY; LASERS; LAWRENCE LIVERMORE NATIONAL LABORATORY; PERFORMANCE; PLASMA; PLASMA DIAGNOSTICS; RESOLUTION; SPECTRA; SPECTROMETERS; X-RAY SPECTROMETERS
Citation Formats
May, M, Heeter, R, and Emig, J. Convex Crystal X-ray Spectrometer for Laser Plasma Experiments. United States: N. p., 2004.
Web. doi:10.1063/1.1781374.
May, M, Heeter, R, & Emig, J. Convex Crystal X-ray Spectrometer for Laser Plasma Experiments. United States. https://doi.org/10.1063/1.1781374
May, M, Heeter, R, and Emig, J. 2004.
"Convex Crystal X-ray Spectrometer for Laser Plasma Experiments". United States. https://doi.org/10.1063/1.1781374. https://www.osti.gov/servlets/purl/15014101.
@article{osti_15014101,
title = {Convex Crystal X-ray Spectrometer for Laser Plasma Experiments},
author = {May, M and Heeter, R and Emig, J},
abstractNote = {Measuring time and space-resolved spectra is important for understanding Hohlraum and Halfraum plasmas. Experiments at the OMEGA laser have used the Nova TSPEC which was not optimized for the OMEGA diagnostic space envelope or for the needed spectroscopic coverage and resolution. An improved multipurpose spectrometer snout, the MSPEC, has been constructed and fielded on OMEGA. The MSPEC provides the maximal internal volume for mounting crystals without any beam interferences at either 2x or 3x magnification. The RAP crystal is in a convex mounting geometry bent to a 20 cm radius of curvature. The spectral resolution, E/dE, is about 200 at 2.5 keV. The spectral coverage is 2 to 4.5 keV. The MSPEC can record four separate spectra on the framing camera at time intervals of up to several ns. The spectrometer design and initial field-test performance will be presented and compared to that of the TSPEC. Work supported by U. S. DoE/UC LLNL contract W-7405-ENG-48},
doi = {10.1063/1.1781374},
url = {https://www.osti.gov/biblio/15014101},
journal = {},
issn = {0034-6748},
number = 10,
volume = 75,
place = {United States},
year = {Thu Apr 15 00:00:00 EDT 2004},
month = {Thu Apr 15 00:00:00 EDT 2004}
}
Works referenced in this record:
Ionization Balance in Inertial Confinement Fusion Hohlraums
journal, July 2001
- Glenzer, S. H.; Fournier, K. B.; Wilson, B. G.
- Physical Review Letters, Vol. 87, Issue 4
X-ray diagnostics of hohlraum plasma flow
journal, January 1997
- Back, C. A.; Glenzer, S. H.; Landen, O. L.
- Review of Scientific Instruments, Vol. 68, Issue 1
Hard x-ray spectrometers for NIF (abstract)
journal, January 2001
- Seely, John; Holland, Glenn; Brown, Charles
- Review of Scientific Instruments, Vol. 72, Issue 1
Absorption experiments on x-ray-heated mid- Z constrained samples
journal, November 1996
- Perry, T. S.; Springer, P. T.; Fields, D. F.
- Physical Review E, Vol. 54, Issue 5
Ionization Processes and Charge-State Distribution in a Highly Ionized High- Laser-Produced Plasma
journal, July 2000
- Foord, M. E.; Glenzer, S. H.; Thoe, R. S.
- Physical Review Letters, Vol. 85, Issue 5
Determination of the Charge State Distribution of a Highly Ionized Coronal Au Plasma
journal, June 2003
- Wong, K. L.; May, M. J.; Beiersdorfer, P.
- Physical Review Letters, Vol. 90, Issue 23
X-ray spectral measurements and collisional radiative modeling of Ni- to Kr-like Au ions in electron beam ion trap plasmas
journal, September 2003
- May, M. J.; Fournier, K. B.; Beiersdorfer, P.
- Physical Review E, Vol. 68, Issue 3
Measurements of Electron Temperature by Spectroscopy in Hohlraum Targets
journal, November 1996
- Back, C. A.; Kalantar, D. H.; Kauffman, R. L.
- Physical Review Letters, Vol. 77, Issue 21