Analysis and implementation of a space resolving spherical crystal spectrometer for x-ray Thomson scattering experiments.
The application of a space-resolving spectrometer to X-ray Thomson Scattering (XRTS) experiments has the potential to advance the study of warm dense matter. This has motivated the design of a spherical crystal spectrometer, which is a doubly focusing geometry with an overall high sensitivity and the capability of providing high-resolution, space-resolved spectra. A detailed analysis of the image fluence and crystal throughput in this geometry is carried out and analytical estimates of these quantities are presented. This analysis informed the design of a new spectrometer intended for future XRTS experiments on the Z-machine. The new spectrometer collects 6 keV x-rays with a spherically bent Ge (422) crystal and focuses the collected x-rays onto the Rowland circle. The spectrometer was built and then tested with a foam target. The resulting high-quality spectra prove that a spherical spectrometer is a viable diagnostic for XRTS experiments.
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Harding
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Ao
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Bailey
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Loisel
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Sinars
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Geissel
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Rochau
Sandia National Laboratory, Albuquerque, New Mexico 87185, USA.
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Smith