High wavevector temporal speckle correlations at the Linac Coherent Light Source | Zendy

Sooheyong Lee | Zendy; Wojciech Roseker | Zendy; Christian Gutt | Zendy; Zhirong Huang | Zendy; Yuantao Ding | Zendy; G. Grübel | Zendy; A. Robert | Zendy

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High wavevector temporal speckle correlations at the Linac Coherent Light Source

Author(s) -

Sooheyong Lee,

Wojciech Roseker,

Christian Gutt,

Zhirong Huang,

Yuantao Ding,

G. Grübel,

A. Robert

Publication year - 2012

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.20.009790

Subject(s) - optics , speckle pattern , monochromator , physics , linear particle accelerator , laser , scattering , thomson scattering , pulse shaping , pulse (music) , beam (structure) , detector , wavelength

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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