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Report No.

Simulation of longitudinal emittance control in J-PARC RCS

Yamamoto, Masanobu  ; Nomura, Masahiro ; Schnase, A.; Shimada, Taihei ; Tamura, Fumihiko  ; Ezura, Eiji*; Hara, Keigo*; Hasegawa, Katsushi*; Omori, Chihiro*; Takagi, Akira*; Takata, Koji*; Toda, Makoto*; Yoshii, Masahito*

The beam commissioning and user operation have been going at the J-PARC RCS. Some Longitudinal beam gymnastics and the acceleration has been successfully performed under the high intensity operation. We have developed the longitudinal particle tracking code with the beam loading and the space charge effects to evaluate the longitudinal beam emittance. We describe the relation between the acceleration voltage pattern and the beam emittance in the dual harmonic rf and the high intensity operation.



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