Study on the multi-pass, multi-bunch beam breakup for 9-cell TESLA cavities in ERL
Si Chen, Sen-Lin Huang, Yong-Ming Li, Li-Wen Feng, Feng Zhu, Sheng-Wen, Quan, Ke-Xin Liu, Jia-Er Chen
TL;DR
This paper investigates the beam breakup threshold current in 9-cell Tesla-type cavities for ERL, demonstrating feasibility for compact ERL facilities with high beam current and few cavities.
Contribution
It provides a detailed analysis of BBU threshold currents in 9-cell Tesla cavities, supporting their use in compact ERL designs.
Findings
Feasibility of using 9-cell Tesla cavities in compact ERL with tens of mA beam current.
Threshold current analysis indicates stable operation possible in proposed configurations.
Supports design considerations for high-current ERL accelerators.
Abstract
Generally, Energy Recovery Linac (ERL) needs special designed high current superconducting RF cavities. In this paper, the threshold current of BBU for compact ERL facilities with 9-cell Tesla type cavities are investigated. The results show that it is feasible to adopt 9-cell Tesla cavity for compact ERL test facilities with just a few cavities and beam current around tens mA.
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