HOM analysis of magnetic alloy cavity

Hasegawa, Katsushi; Hara, Keigo*; Nomura, Masahiro  ; Omori, Chihiro*; Schnase, A.; Tamura, Fumihiko   ; Toda, Makoto*; Yamamoto, Masanobu   ; Yoshii, Masahito*

The RF cavity using Magnetic Alloy (MA) cores has been developed for achieving the high field gradient in J-PARC synchrotron. Because of adopting the quality factor of 26, cut core configuration has been used in Main Ring RF cavities. Electromagnetic simulations of HOM analysis about RF cavity of MA cores, cut core configuration and between the cut core gap were performed. In this paper, a simulation method of MA core and results of HOM analysis for cut core and MA core are presented.