SRF2025 - 22nd International Conference on RF Superconductivity

HOM analysis of the 1.3 GHz 3-cell cavity for high-current beam acceleration

MOP55

22 Sept 2025, 14:30

3h

Ito International Research Center

Board: MOP55

Poster Presentation MC3: Cavities Monday Poster Session

Speaker

Xuan Huang (Shanghai Institute of Applied Physics)

Description

Recently, 1.3 GHz 3-cell superconducting cavities were proposed for the injector of the high-brightness free electron laser based on the energy recovery linac scheme. In the injector section, three cavities are required to accelerate a 10 mA electron beam to 10 MeV. The diameter of the beam pipe is increased to 100 mm to damp higher order modes (HOMs), which may lead to beam quality degradation or beam instability. This paper presents the HOM analysis, and HOM power is also calculated.