KEK, Ibaraki
Status of KEKB Superconducting Cavities and Study for Future SKEKB Y.Morita, S.Mitsunobu, T.Furuya, S.Takano, M.Nishiwaki, A.Kabe, T.Tanaka and K.Akai KEK With superconducting crab cavity, 8 superconducting accelerating cavities were stably operated last two years and KEKB luminosity reached the world records of 2.1x1034. For future Super KEK B-Factory(SKEKB) we study a high power input coupler of 600kW, HOM dampers of more than 30 kW and a cavity operation with reversed phase position for high power loading with very low voltage in case of a normal phase condition. The reversed phase experiment at 150 mA of a beam current in KEKB shows potential for the low voltage and high power application.
