Reconstruction of the 2-dimensitonal beam profile at longitudinal phase space with tomography method in J-PARC RCS and MR

Yoshimoto, Masahiro; Tamura, Fumihiko; Yamamoto, Masanobu; Yoshii, Masahito*; Omori, Chihiro*; Hayashi, Naoki; Kawase, Masato; Watanabe, Kazuhiko*; Yoshikawa, Muneyoshi*

Proceedings of 6th Annual Meeting of Particle Accelerator Society of Japan (CD-ROM), p.737 - 740, 2010/03

https://www.pasj.jp/web_publish/pasj6/papers/tobdc02.pdf

The longitudinal phase space tomography, which was evolved to retrieve the two-dimensional beam distribution in the longitudinal phase space with computer tomography algorithms, is very useful diagnostic tool in the accelerator domain. The simple reconstruction tool was developed for the J-PARC RCS and MR with the convolution back projection method for the beam storage mode. On the assumption that the longitudinal profiles should not be disturbed for one period of the synchrotron oscillation, such two-dimensional profiles can be reconstructed easily from one-dimensional bunch beam profiles, which are measured for every turn by the wall current monitor.