Thermal loading on self-seeding monochromators in x-ray free electron lasers

被引：9

作者：

Qu, Zhengxian ^{[1
,2
]}

Ma, Yanbao ^{[1
]}

Zhou, Guanqun ^{[2
]}

Wu, Juhao ^{[2
]}

机构：

[1] Univ Calif Merced, Dept Mech Engn, Merced, CA 95343 USA

[2] Stanford Univ, SLAG Natl Accelerator Lab, Stanford, CA 94309 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2020年 / 969卷

基金：

美国国家科学基金会;

关键词：

Hard X-ray; Self-seeding; Thermal load; Monochromator; SYNCHROTRON-RADIATION; DIAMOND CRYSTAL; OPERATION; OPTICS;

D O I：

10.1016/j.nima.2020.163936

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

One approach to achieve longitudinally coherent hard X-ray free electron laser (XFEL) radiation is to introduce a single-crystal monochromator in the beam path to generate a co-propagating, time-synchronized self-seeding radiation pulse. For modern high-repetition rate XFELs, however, thermal loading on the crystal can degrade the quality of the seed pulse. To assess limitations on the maximum XFEL pulse repetition rate imposed by the seeding crystal, a comprehensive study of thermomechanical, and X-ray diffraction effects within the crystal is presented for two consecutive self-amplified spontaneous emission pulses incident on both reflective and transmissive crystal monochromators.

引用

页数：5

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