Study on the Instability of TPS With Superconducting Harmonic Cavity Under High Beam Current Operation

IF 1.7 3区物理与天体物理 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Applied Superconductivity Pub Date : 2024-12-12 DOI:10.1109/TASC.2024.3516724

Zong-Kai Liu;Ming-Chyuan Lin;Chih-Hung Lo;Chaoen Wang;Meng-Shu Yeh;Fu-Yu Chang;Mei-Hsia Chang;Fu-Tsai Chung;Ling-Jhen Chen;Shian-Wen Chang;Yi-Ta Li

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引用次数: 0

Abstract

The Taiwan Photon Source (TPS) is a third-generation, 3 GeV low-emittance light source situated at the NSRRC in Taiwan. The TPS has a bunch length of approximately 4.5 mm at routine operation with a beam current of 500 mA. This short bunch length leads to a brief Touschek lifetime and high parasitic loss in in-vacuum insertion devices. To address this issue, a 1.5 GHz two-cell superconducting RF (SRF) passive harmonic cavity (HC) operating at 4.5 K has been designed for the TPS. The anticipated bunch lengthening factors, accounting for phase transient effects, range from 1.5 to 2.3 for different bunches. Beyond performance enhancement, the study of the instability of the electron beam is also an important task. This work investigates the instability during high beam current operation with the SRF HC. This paper delves into the details of theoretical calculations, the methodology of multi-bunch multi-particle tracking simulation, and presents the results of the instability study.

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来源期刊

IEEE Transactions on Applied Superconductivity 工程技术-工程：电子与电气

CiteScore

3.50

自引率

33.30%

发文量

650

审稿时长

2.3 months

期刊介绍： IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.