Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers
The parallel operation of plural undulator beam lines is an important means of improving the efficiency and usability of x-ray free-electron laser facilities. After the installation of a second undulator beam line (BL2) at SPring-8 Angstrom compact free-electron laser (SACLA), pulse-by-pulse switchi...
Main Authors: | , , , , , , , , , , , , |
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Format: | Article |
Language: | English |
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American Physical Society
2016-02-01
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Series: | Physical Review Accelerators and Beams |
Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.19.020703 |
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author | Toru Hara Kenji Fukami Takahiro Inagaki Hideaki Kawaguchi Ryota Kinjo Chikara Kondo Yuji Otake Yasuyuki Tajiri Hideki Takebe Kazuaki Togawa Tatsuya Yoshino Hitoshi Tanaka Tetsuya Ishikawa |
author_facet | Toru Hara Kenji Fukami Takahiro Inagaki Hideaki Kawaguchi Ryota Kinjo Chikara Kondo Yuji Otake Yasuyuki Tajiri Hideki Takebe Kazuaki Togawa Tatsuya Yoshino Hitoshi Tanaka Tetsuya Ishikawa |
author_sort | Toru Hara |
collection | DOAJ |
description | The parallel operation of plural undulator beam lines is an important means of improving the efficiency and usability of x-ray free-electron laser facilities. After the installation of a second undulator beam line (BL2) at SPring-8 Angstrom compact free-electron laser (SACLA), pulse-by-pulse switching between two beam lines was tested using kicker and dc twin-septum magnets. To maintain a compact size, all undulator beam lines at SACLA are designed to be placed within the same undulator hall located downstream of the accelerator. In order to ensure broad tunability of the laser wavelength, the electron bunches are accelerated to different beam energies optimized for the wavelengths of each beam line. In the demonstration, the 30 Hz electron beam was alternately deflected to two beam lines and simultaneous lasing was achieved with 15 Hz at each beam line. Since the electron beam was deflected twice by 3° in a dogleg to BL2, the coherent synchrotron radiation (CSR) effects became non-negligible. Currently in a wavelength range of 4–10 keV, a laser pulse energy of 100–150 μJ can be obtained with a reduced peak current of around 1 kA by alleviating the CSR effects. This paper reports the results and operational issues related to the multi-beam-line operation of SACLA. |
first_indexed | 2024-12-21T10:55:27Z |
format | Article |
id | doaj.art-657fed8d5ab4456cad9d2af748c09696 |
institution | Directory Open Access Journal |
issn | 2469-9888 |
language | English |
last_indexed | 2024-12-21T10:55:27Z |
publishDate | 2016-02-01 |
publisher | American Physical Society |
record_format | Article |
series | Physical Review Accelerators and Beams |
spelling | doaj.art-657fed8d5ab4456cad9d2af748c096962022-12-21T19:06:32ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882016-02-0119202070310.1103/PhysRevAccelBeams.19.020703Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasersToru HaraKenji FukamiTakahiro InagakiHideaki KawaguchiRyota KinjoChikara KondoYuji OtakeYasuyuki TajiriHideki TakebeKazuaki TogawaTatsuya YoshinoHitoshi TanakaTetsuya IshikawaThe parallel operation of plural undulator beam lines is an important means of improving the efficiency and usability of x-ray free-electron laser facilities. After the installation of a second undulator beam line (BL2) at SPring-8 Angstrom compact free-electron laser (SACLA), pulse-by-pulse switching between two beam lines was tested using kicker and dc twin-septum magnets. To maintain a compact size, all undulator beam lines at SACLA are designed to be placed within the same undulator hall located downstream of the accelerator. In order to ensure broad tunability of the laser wavelength, the electron bunches are accelerated to different beam energies optimized for the wavelengths of each beam line. In the demonstration, the 30 Hz electron beam was alternately deflected to two beam lines and simultaneous lasing was achieved with 15 Hz at each beam line. Since the electron beam was deflected twice by 3° in a dogleg to BL2, the coherent synchrotron radiation (CSR) effects became non-negligible. Currently in a wavelength range of 4–10 keV, a laser pulse energy of 100–150 μJ can be obtained with a reduced peak current of around 1 kA by alleviating the CSR effects. This paper reports the results and operational issues related to the multi-beam-line operation of SACLA.http://doi.org/10.1103/PhysRevAccelBeams.19.020703 |
spellingShingle | Toru Hara Kenji Fukami Takahiro Inagaki Hideaki Kawaguchi Ryota Kinjo Chikara Kondo Yuji Otake Yasuyuki Tajiri Hideki Takebe Kazuaki Togawa Tatsuya Yoshino Hitoshi Tanaka Tetsuya Ishikawa Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers Physical Review Accelerators and Beams |
title | Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers |
title_full | Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers |
title_fullStr | Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers |
title_full_unstemmed | Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers |
title_short | Pulse-by-pulse multi-beam-line operation for x-ray free-electron lasers |
title_sort | pulse by pulse multi beam line operation for x ray free electron lasers |
url | http://doi.org/10.1103/PhysRevAccelBeams.19.020703 |
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