Studies on high order mode of bell-shaped prototype cavities

[1]
. MA G, ZHAO Z, LIU J. Chinese Physics C, 2008, 32(4):2752. TAO X K, CHEN H B, TONG D C. Study of HOM Couplers on an 800 MHz Prototype Cavity. In: Proceedings of the Asian Particle Accelerator Conference. Beijing, China,2001, 746-7483. LIANG Y Z. Research on HOM Coupler for Higher Harmonic Cavity. Master thesis, at Engineering Physics Department, Beijing: Tsinghua University, 20034. Maier L C, Jr., Slater J C. Journal of Applied Physics,1952, 23: 685. XIAO L, LIANG Y Z, TONG D et al. NIM A, 2001, 463:86-936. Padamsee, Barnes P et al. Particle Accelerators, 1992, 40:17