IPAC'24 - 15th International Particle Accelerator Conference

Particle tracking simulation and semi-analytical Vlasov calculation of CSR induced microbunching instability in a non-symmetric S-type four-dipole bunch compressor chicane

MOPS38

20 May 2024, 16:00

2h

Blues (MCC Exhibit Hall A)

Poster Presentation MC5.D05 Coherent and Incoherent Instabilities Theory, Simulations, Code Development Monday Poster Session

Speaker

Bingxi Liu (Huazhong University of Science and Technology)

Description

Coherent synchrotron radiation (CSR) induced microbunching instability (MBI) has been an issue in the multi-bend design for a single-pass high-brightness electron beam transport. Recently a novel design of a non-symmetric four-dipole bunch compressor chicane has been proposed to effectively mitigate the CSR-induced emittance growth, compared with the symmetric C-type chicane widely used in present linac-FEL facilities. In this paper we perform a particle tracking simulation of the CSR-induced microbunching instability in a generic four-dipole chicane using ELEGANT. The results are compared and found consistent with the semi-analytical Vlasov calculation. The results provide a solid support for effectiveness of suppressing MBI in a non-symmetric S-type four-dipole bunch compressor chicane.

Funding Agency

This work is supported by the Fundamental Research Funds for the Central Universities (HUST) under Project No. 2021GCRC006 and National Natural Science Foundation of China under project No. 12275094.