Open AccessDevelopment of a hard X‐ray delay line for X‐ray photon correlation spectroscopy and jitter‐free pump–probe experiments at X‐ray free‐electron laser sources
Author(s) -
Roseker Wojciech,
Franz Hermann,
SchulteSchrepping Horst,
Ehnes Anita,
Leupold Olaf,
Zontone Federico,
Lee Sooheyong,
Robert Aymeric,
Grübel Gerhard
Publication year - 2011
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s0909049511004511
Subject(s) - x ray , optics , beamline , speckle pattern , physics , free electron laser , synchrotron , spectroscopy , synchrotron radiation , photon , laser , jitter , line (geometry) , electron , materials science , nuclear physics , beam (structure) , computer science , telecommunications , geometry , mathematics , quantum mechanics
A hard X‐ray delay line capable of splitting and delaying single X‐ray pulses has been developed with the aim of performing X‐ray photon correlation spectroscopy (XPCS) and X‐ray pump–probe experiments at hard X‐ray free‐electron laser sources. The performance of the device was tested with 8.39 keV synchrotron radiation. Time delays up to 2.95 ns have been demonstrated. The feasibility of the device for performing XPCS studies was tested by recording static speckle patterns. The achieved speckle contrast of 56% indicates the possibility of performing ultra‐fast XPCS studies with the delay line.