Improving a high-efficiency, gated spectrometer for x-ray Thomson scattering experiments at the National Ignition Facility
- 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 Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- AC02-76SF00515; AC52-07NA27344; 13-ERD-073
- OSTI ID:
- 1360157
- Journal Information:
- Review of Scientific Instruments, Vol. 87, Issue 11; ISSN 0034-6748
- Publisher:
- American Institute of Physics (AIP)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
A platform for x-ray Thomson scattering measurements of radiation hydrodynamics experiments on the NIF
|
journal | October 2018 |
X-ray penumbral imaging diagnostic developments at the National Ignition Facility
|
conference | September 2017 |
Similar Records
Qualification of a high-efficiency, gated spectrometer for x-ray Thomson scattering on the National Ignition Facility
High resolution x-ray Thomson scattering measurements from cryogenic hydrogen jets using the linac coherent light source