3
|
Kang HS, Yang H, Kim G, Heo H, Nam I, Min CK, Kim C, Baek SY, Choi HJ, Mun G, Park BR, Suh YJ, Shin DC, Hu J, Hong J, Jung S, Kim SH, Kim K, Na D, Park SS, Park YJ, Han JH, Jung YG, Jeong SH, Kim MJ, Lee HG, Lee S, Lee WW, Oh B, Suh HS, Park KH, Lee HS, Khan DZ, Raubenheimer TO, Wu J. FEL performance achieved at PAL-XFEL using a three-chicane bunch compression scheme. JOURNAL OF SYNCHROTRON RADIATION 2019; 26:1127-1138. [PMID: 31274436 DOI: 10.1107/s1600577519005861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 04/28/2019] [Indexed: 06/09/2023]
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.
Collapse
Affiliation(s)
- Heung Sik Kang
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Haeryong Yang
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Gyujin Kim
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Hoon Heo
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Inhyuk Nam
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Chang Ki Min
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Changbum Kim
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Soung Youl Baek
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Hyo Jin Choi
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Geonyeong Mun
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Byoung Ryul Park
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Young Jin Suh
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Dong Cheol Shin
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Jinyul Hu
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Juho Hong
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Seonghoon Jung
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Sang Hee Kim
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - KwangHoon Kim
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Donghyun Na
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Soung Soo Park
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Yong Jung Park
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Jang Hui Han
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Young Gyu Jung
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Seong Hun Jeong
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Min Jae Kim
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Hong Gi Lee
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Sangbong Lee
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Woul Woo Lee
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Bonggi Oh
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Hyung Suck Suh
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Ki Hyeon Park
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Heung Soo Lee
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - D Z Khan
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - T O Raubenheimer
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| | - Juhao Wu
- Pohang Accelerator Laboratory, 80 Jigokro-127-beongil, Nam-gu, Pohang, Kyungbuk 37673, South Korea
| |
Collapse
|
5
|
Guetg MW, Lutman AA, Ding Y, Maxwell TJ, Decker FJ, Bergmann U, Huang Z. Generation of High-Power High-Intensity Short X-Ray Free-Electron-Laser Pulses. PHYSICAL REVIEW LETTERS 2018; 120:014801. [PMID: 29350964 DOI: 10.1103/physrevlett.120.014801] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Indexed: 06/07/2023]
Abstract
X-ray free-electron lasers combine a high pulse power, short pulse length, narrow bandwidth, and high degree of transverse coherence. Any increase in the photon pulse power, while shortening the pulse length, will further push the frontier on several key x-ray free-electron laser applications including single-molecule imaging and novel nonlinear x-ray methods. This Letter shows experimental results at the Linac Coherent Light Source raising its maximum power to more than 300% of the current limit while reducing the photon pulse length to 10 fs. This was achieved by minimizing residual transverse-longitudinal centroid beam offsets and beam yaw and by correcting the dispersion when operating over 6 kA peak current with a longitudinally shaped beam.
Collapse
Affiliation(s)
- Marc W Guetg
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Alberto A Lutman
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Yuantao Ding
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Timothy J Maxwell
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | | | - Uwe Bergmann
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| | - Zhirong Huang
- SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA
| |
Collapse
|