| Literature DB >> 31274436 |
Heung Sik Kang1, Haeryong Yang1, Gyujin Kim1, Hoon Heo1, Inhyuk Nam1, Chang Ki Min1, Changbum Kim1, Soung Youl Baek1, Hyo Jin Choi1, Geonyeong Mun1, Byoung Ryul Park1, Young Jin Suh1, Dong Cheol Shin1, Jinyul Hu1, Juho Hong1, Seonghoon Jung1, Sang Hee Kim1, KwangHoon Kim1, Donghyun Na1, Soung Soo Park1, Yong Jung Park1, Jang Hui Han1, Young Gyu Jung1, Seong Hun Jeong1, Min Jae Kim1, Hong Gi Lee1, Sangbong Lee1, Woul Woo Lee1, Bonggi Oh1, Hyung Suck Suh1, Ki Hyeon Park1, Heung Soo Lee1, D Z Khan1, T O Raubenheimer1, Juhao Wu1.
Abstract
PAL-XFEL utilizes a three-chicane bunch compression (3-BC) scheme (the very first of its kind in operation) for free-electron laser (FEL) operation. The addition of a third bunch compressor allows for more effective mitigation of coherent synchrotron radiation during bunch compression and an increased flexibility of system configuration. Start-to-end simulations of the effects of radiofrequency jitter on the electron beam performance show that using the 3-BC scheme leads to better performance compared with the two-chicane bunch compression scheme. Together with the high performance of the linac radiofrequency system, it enables reliable operation of PAL-XFEL with unprecedented stability in terms of arrival timing, pointing and intensity; an arrival timing jitter of better than 15 fs, a transverse position jitter of smaller than 10% of the photon beam size, and an FEL intensity jitter of smaller than 5% are consistently achieved.Keywords: arrival timing jitter; bunch compression; coherent synchrotron radiation; free-electron laser; hard X-rays; stability
Year: 2019 PMID： 31274436 DOI： 10.1107/S1600577519005861
Source DB: PubMed Journal: J Synchrotron Radiat ISSN： 0909-0495 Impact factor: 2.616