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| TUPMP042 |
The Beam Cleaning Analysis for the TPS Vacuum System |
1344 |
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- Y.C. Yang, C.K. Chan, C.-C. Chang, A.Y. Chen, J.-Y. Chuang, C.H. Huang
NSRRC, Hsinchu, Taiwan
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Commissioning for the TPS, a low-emittance 3-GeV synchrotron ring, started in December 2014 and is now currently operating in top-up mode at 400mA for users. Until the last machine shut down in December 2018, a total beam dose of 4919 Ah was accumulated and the beam cleaning effect decreased the dynamic pressure to 1.5×10-11 Pa/mA. During past years operation, several vacuum chambers were replaced to improve vacuum performance and avoid exposure to synchrotron radiation from insertion devices. In this paper, the beam cleaning evolution of new vacuum sections will be discussed and compared with experience in the rest of the storage ring. A particular cleaning evolution could be predicted and can be referenced for machine shutdown planning in the future.
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2019-TUPMP042
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| About • |
paper received ※ 14 May 2019 paper accepted ※ 22 May 2019 issue date ※ 21 June 2019 |
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