Optimization of the hard X-ray self-seeding layout of the PAL-XFEL

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• 作者：Jaeyu Lee^a ; Chi Hyun Shim^a ; Moohyun Yoon^a ; Ilmoon Hwang^b ; Yong Woon Parc^b ; ^{young1@postech.ac.kr" class="auth_mail" title="E-mail the corresponding author} ; Juhao Wu^c
• 关键词：PAL-XFEL ; Undulator ; Self-seeding ; Free-electron laser
• 刊名：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
• 出版年：2015
• 出版时间：21 October 2015
• 年：2015
• 卷：798
• 期：Complete
• 页码：162-166
• 全文大小：1235 K

文摘

The Pohang Accelerator Laboratory X-ray free electron laser (PAL-XFEL) will operate a soft X-ray undulator line and a hard X-ray one during the initial operation period. For the hard X-ray line, self-seeding using a diamond crystal is the most promising approach to supply narrow bandwidth radiation to users. This paper presents simulation results for the optimization of the self-seeding layout in the hard X-ray undulator line for PAL-XFEL. The electron energy used in this study for the hard X-ray self-seeding scheme is 8.126 GeV and the central wavelength is 0.15 nm. The photon beam spectral bandwidth will be 0.78 eV by using the self-seeding option.