Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents
A conduction-cooled cryogenic permanent magnet undulator, CU15, with a period length of 15 mm and 133 periods has been successfully developed. This undulator has been operated at the Taiwan Photon Source (TPS) storage ring at a beam current of 500 mA for more than 3 years. In CU15, two cryocoolers a...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2024-02-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.27.023501 |
| _version_ | 1797322727426621440 |
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| author | Jui-Che Huang Hideo Kitamura Chih-Shen Yang Ching-Kang Yang Chih-Wei Chen Yu-Chun Chuang |
| author_facet | Jui-Che Huang Hideo Kitamura Chih-Shen Yang Ching-Kang Yang Chih-Wei Chen Yu-Chun Chuang |
| author_sort | Jui-Che Huang |
| collection | DOAJ |
| description | A conduction-cooled cryogenic permanent magnet undulator, CU15, with a period length of 15 mm and 133 periods has been successfully developed. This undulator has been operated at the Taiwan Photon Source (TPS) storage ring at a beam current of 500 mA for more than 3 years. In CU15, two cryocoolers are used to cool the PrFeB magnets to 80 K. The effective magnetic field measures 1.33 Tesla for a magnet gap of 4.2 mm, maintaining an rms phase error below 2.6°. The bunch length of the electron beam in TPS is as short as 16 psec, leading to a serious issue with high beam-induced heating in CU15. This report addresses the above issues and provides detailed adaptations of CU15 to operate at a beam current of 500 mA. |
| first_indexed | 2024-03-08T05:18:29Z |
| format | Article |
| id | doaj.art-e21fabdd999c4700b0b142d9b80873f3 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-03-08T05:18:29Z |
| publishDate | 2024-02-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-e21fabdd999c4700b0b142d9b80873f32024-02-06T15:01:40ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882024-02-0127202350110.1103/PhysRevAccelBeams.27.023501Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currentsJui-Che HuangHideo KitamuraChih-Shen YangChing-Kang YangChih-Wei ChenYu-Chun ChuangA conduction-cooled cryogenic permanent magnet undulator, CU15, with a period length of 15 mm and 133 periods has been successfully developed. This undulator has been operated at the Taiwan Photon Source (TPS) storage ring at a beam current of 500 mA for more than 3 years. In CU15, two cryocoolers are used to cool the PrFeB magnets to 80 K. The effective magnetic field measures 1.33 Tesla for a magnet gap of 4.2 mm, maintaining an rms phase error below 2.6°. The bunch length of the electron beam in TPS is as short as 16 psec, leading to a serious issue with high beam-induced heating in CU15. This report addresses the above issues and provides detailed adaptations of CU15 to operate at a beam current of 500 mA.http://doi.org/10.1103/PhysRevAccelBeams.27.023501 |
| spellingShingle | Jui-Che Huang Hideo Kitamura Chih-Shen Yang Ching-Kang Yang Chih-Wei Chen Yu-Chun Chuang Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents Physical Review Accelerators and Beams |
| title | Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents |
| title_full | Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents |
| title_fullStr | Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents |
| title_full_unstemmed | Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents |
| title_short | Performance investigation of conduction-cooled cryogenic permanent magnet undulator at high beam currents |
| title_sort | performance investigation of conduction cooled cryogenic permanent magnet undulator at high beam currents |
| url | http://doi.org/10.1103/PhysRevAccelBeams.27.023501 |
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