The purpose of this paper is to calculate the longitudinal and transverse wakefields of the FCC collimators using the electromagnetic codes ECHO3D and IW2D. We cross-checked our results using CST particle studio for long bunches, and found them to be in good agreement. The obtained results show that the collimators give one of the highest contributions to the overall FCC-ee wake potentials. In particular, using the code PyHEADTAIL, we have found that the geometric contribution of the collimators' wakefield reduces significantly the transverse mode coupling instability threshold. Therefore, it is imperative to explore and implement solutions that effectively mitigate this wakefield source.
Wakefields excited in the FCC-ee collimation system / Behtouei, M.; Carideo, E.; Zobov, M.; Migliorati, M.. - In: JOURNAL OF INSTRUMENTATION. - ISSN 1748-0221. - 19:2(2024), pp. 1-12. [10.1088/1748-0221/19/02/P02014]
Wakefields excited in the FCC-ee collimation system
Behtouei M.
;Carideo E.;Migliorati M.
2024
Abstract
The purpose of this paper is to calculate the longitudinal and transverse wakefields of the FCC collimators using the electromagnetic codes ECHO3D and IW2D. We cross-checked our results using CST particle studio for long bunches, and found them to be in good agreement. The obtained results show that the collimators give one of the highest contributions to the overall FCC-ee wake potentials. In particular, using the code PyHEADTAIL, we have found that the geometric contribution of the collimators' wakefield reduces significantly the transverse mode coupling instability threshold. Therefore, it is imperative to explore and implement solutions that effectively mitigate this wakefield source.| File | Dimensione | Formato | |
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Behtouei_wakefields_2024.pdf
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