A single-shot transmissive spectrometer for hard x-ray free electron lasers

Journal Article · Mon Jul 16 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4736725· OSTI ID:22089285

Diling, Zhu; Cammarata, Marco; Feldkamp, Jan M.; Fritz, David M.; Hastings, Jerome B.; Lee, Sooheyong; Lemke, Henrik T.; Robert, Aymeric; Turner, James L.; Yiping, Feng ^[1]

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1. Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025 (United States)

We report hard x-ray single-shot spectral measurements of the Linac Coherent Light Source. The spectrometer is based on a 10 {mu}m thick cylindrically bent Si single crystal operating in the symmetric Bragg geometry to provide dispersion and high transmission simultaneously. It covers a spectral range >1% using the Si(111) reflection. Using the Si(333) reflection, it reaches a resolving power of better than 42 000 and transmits >83% of the incident flux at 8.3 keV. The high resolution enabled the observation of individual spectral spikes characteristic of a self-amplified spontaneous emission x-ray free electron laser source. Potential applications of the device are discussed.

• OSTI ID: 22089285
• Journal Information: Applied Physics Letters, Vol. 101, Issue 3; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DISPERSIONS
FREE ELECTRON LASERS
HARD X RADIATION
KEV RANGE
LINEAR ACCELERATORS
MONOCRYSTALS
REFLECTION
RESOLUTION
SILICON
SPECTROMETERS
SUPERRADIANCE
SYMMETRY
X-RAY LASERS
X-RAY SPECTROSCOPY