Improving a high-efficiency, gated spectrometer for x-ray Thomson scattering experiments at the National Ignition Facility

Döppner, T.; Kraus, D.; Neumayer, P.; Bachmann, B.; Emig, J.; Falcone, R. W.; Fletcher, L. B.; Hardy, M.; Kalantar, D. H.; Kritcher, A. L.; Landen, O. L.; Ma, T.; Saunders, A. M.; Wood, R. D.

doi:10.1063/1.4959874

Improving a high-efficiency, gated spectrometer for x-ray Thomson scattering experiments at the National Ignition Facility

Journal Article · Wed Aug 03 00:00:00 EDT 2016 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4959874· OSTI ID:1360157

Döppner, T. ^[1]; Kraus, D. ^[2]; Neumayer, P. ^[3]; Bachmann, B. ^[1]; Emig, J. ^[1]; Falcone, R. W. ^[4]; Fletcher, L. B. ^[5]; Hardy, M. ^[1]; Kalantar, D. H. ^[1]; Kritcher, A. L. ^[1]; ^[1]; Ma, T. ^[1]; Saunders, A. M. ^[2]; Wood, R. D. ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Univ. of California, Berkeley, CA (United States)
Gesellschaft fur Schwerionenphysik, Darmstadt (Germany)
Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)

We are developing x-ray Thomson scattering for applications in implosion experiments at the National Ignition Facility. In particular we have designed and fielded MACS, a high-efficiency, gated x-ray spectrometer at 7.5-10 keV [T. Döppner et al., Rev. Sci. Instrum. 85, 11D617 (2014)]. Here in this paper we report on two new Bragg crystals based on Highly Oriented Pyrolytic Graphite (HOPG), a flat crystal and a dual-section cylindrically curved crystal. We have performed in situ calibration measurements using a brass foil target, and we used the flat HOPG crystal to measure Mo K-shell emission at 18 keV in 2nd order diffraction. Such high photon energy line emission will be required to penetrate and probe ultra-high-density plasmas or plasmas of mid-Z elements.

Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE Laboratory Directed Research and Development (LDRD) Program

Grant/Contract Number:: AC02-76SF00515; AC52-07NA27344

OSTI ID:: 1360157

Alternate ID(s):: OSTI ID: 22596585

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 87; ISSN 0034-6748; ISSN RSINAK

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

References (12)

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X-ray Thomson scattering as a temperature probe for Gbar shock experiments Döppner, T.; Kritcher, A. L.; Kraus, D. Journal of Physics: Conference Series, Vol. 500, Issue 19 https://doi.org/10.1088/1742-6596/500/19/192019	journal	May 2014
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A platform for x-ray Thomson scattering measurements of radiation hydrodynamics experiments on the NIF LeFevre, H. J.; Ma, K.; Belancourt, P. X. Review of Scientific Instruments, Vol. 89, Issue 10 https://doi.org/10.1063/1.5039392	journal	October 2018
X-ray penumbral imaging diagnostic developments at the National Ignition Facility Felker, Sean J.; Bachmann, Benjamin; Abu Shawareb, Hatim Target Diagnostics Physics and Engineering for Inertial Confinement Fusion VI https://doi.org/10.1117/12.2274611	conference	September 2017

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