YU Haibo1, 3 LIU Jianfei 1, 3 HOU Hongtao 1, et al. Higher order mode damping of a higher harmonic superconducting cavity for SSRF[J]. Nuclear techniques, 2012, 35(1): 1-4.
YU Haibo1, 3 LIU Jianfei 1, 3 HOU Hongtao 1, et al. Higher order mode damping of a higher harmonic superconducting cavity for SSRF[J]. Nuclear techniques, 2012, 35(1): 1-4.DOI:
Adopting a higher harmonic cavity on a synchrotron radiation facility can increase the beam lifetime and suppress the beam instability.In this paper
we report the simulation and preliminary design on higher order modes(HOMs) damping of the designed and fabricated higher harmonic superconducting cavity for Shanghai Synchrotron Radiation Facility(SSRF).The requirements for the HOM damping are analyzed
and the length and location of the HOM damper are optimized by using the SEAFISH code.The results show that the design can provide heavy damping for harmful HOMs with decreased impedance
and the beam instability requirement of SSRF can be satisfied.By using the ABCI code
the loss factor is obtained and the HOM power is estimated.