AI Article Synopsis
- The study explores the feasibility of high wavevector temporal speckle correlation measurements at the Linac Coherent Light Source (LCLS), the first hard x-ray free electron laser.
- It investigates how the fluctuating spectral profile of LCLS x-ray radiation affects single shot speckle contrast in wide angle x-ray scattering.
- The authors propose a method to achieve a more consistent hard x-ray pulse using a narrow bandpass crystal monochromator.
Article Abstract
We report on the feasibility of high wavevector temporal speckle correlation measurements at the world's first hard x-ray free electron laser, the Linac Coherent Light Source (LCLS). Due to the chaotic nature of LCLS, the spectral profile of the x-ray radiation fluctuates on a pulse-to-pulse basis. Its impact on the determination of the single shot speckle contrast in a wide angle x-ray scattering geometry is investigated by analyzing FEL power spectra that are simulated based on the nominal operational parameters of LCLS. Ultimately, a potential scheme to deliver a single-mode hard x-ray pulse is proposed by using a narrow bandpass crystal monochromator.
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| http://dx.doi.org/10.1364/OE.20.009790 | DOI Listing |
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