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Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning
https://repo.qst.go.jp/records/2001182
https://repo.qst.go.jp/records/2001182a78bbd11-79d2-491e-afc8-24a1345d9465
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||||||||||||||||||||||||||||
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| 公開日 | 2024-05-08 | |||||||||||||||||||||||||||||||||||||||||||
| タイトル | ||||||||||||||||||||||||||||||||||||||||||||
| タイトル | Measurements of momentum halo due to the reduced RFQ voltage during the LIPAc beam commissioning | |||||||||||||||||||||||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||||||||||||||||||||||||
| 言語 | ||||||||||||||||||||||||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||||||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||||||||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||||||||||||||||||||||||
| 資源タイプ | journal article | |||||||||||||||||||||||||||||||||||||||||||
| 著者 |
Hirosawa Koki
× Hirosawa Koki
× Luca Bellan
× Florian Benedetti
× Carin Yann
× Michele Comunian
× Andrea De Franco
× Herve Dzitko
× Gex Dominique
× Hasegawa Kazuo
× Kondo Keitaro
× Saerom Kwon
× Masuda Kai
× Mizuno Akihiko
× Juan Carlos Morales Vega
× Ivan Moya martinez
× Ivan Podadera
× Francesco Scantamburlo
× Sugimoto Masayoshi
× the IFMIF/EVEDA Integrated Project Team
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| 抄録 | ||||||||||||||||||||||||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||||||||||||||||||||||||
| 内容記述 | The Linear IFMIF Prototype Accelerator, LIPAc, is being commissioned aiming at validating the RFQ up to 5 MeV beam acceleration. Eventually, the nominal beam of 5 MeV?125 mA in 1 ms length and 1 Hz rate pulsed mode was achieved in 2019. The beam operation has been resumed since July 2023 after a long maintenance including recovery from unexpected problems in the RFQ-RF system. This new phase aims at the commissioning of the full configuration except SRF LINAC, which is replaced by a temporary beam transport line. Focusing on the RFQ behavior, it will be interesting to operate it at higher duty, especially for longer pulses. Furthermore, a beam simulation study suggested that the beam extracted from the RFQ includes considerable momentum halo when the vane voltage reduces by more than 5 %, with a slight decrease of the mean energy. It can be a potential source of a quench like the mismatched beam in the cryomodule. This could be studied by measuring the energy from the Time-of-Flight among multiple BPMs while monitoring beam loss around the dipole, where momentum halo should be lost. During the beam commissioning phase, we studied them by scanning the RFQ voltage. | |||||||||||||||||||||||||||||||||||||||||||
| 書誌情報 |
Journal of Instrumentation 巻 19, 号 05, p. T05002, 発行日 2024-05 |
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| 出版者 | IOP Publishing | |||||||||||||||||||||||||||||||||||||||||||
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| 識別子タイプ | DOI | |||||||||||||||||||||||||||||||||||||||||||
| 関連識別子 | 10.1088/1748-0221/19/05/T05002 | |||||||||||||||||||||||||||||||||||||||||||
