Beam Diagnostics for the J-PARC Main Ring Synchrotron

Author

Toyama, T. ; Arakawa, D. ; Hashimoto, Y. ; Lee, S. ; Miura, T. ; Muto, S. ; Hayashi, N. ; Toyokawa, R. ; Kishiro, J.

Author_Institution

KEK, Tsukuba, Ibaraki, Japan, takeshi.toyama@kek.jp

fYear

2005

fDate

16-20 May 2005

Firstpage

958

Lastpage

960

Abstract

Beam diagnostics: beam intensity monitors (DCCT SCT, FCT, WCM), beam position monitors (ESM), beam loss monitors (proportional chamber, air ion chamber), beam profile monitors (secondary electron emission, gas-sheet) have been designed, tested, and will be installed for the Main Ring synchrotron (MR) of J-PARC (Japan Proton Accelerator Research Complex). This paper covers the basic design principle and specification of each monitor of the MR and the beam transport line from 3 GeV rapid cycling synchrotron to the MR (3-50BT), with a stress on how to cope with high power beam (average circulation current of ∼13 A) and low beam loss operation (less than 0.5 W/m except a collimator, injection and extraction region). Some results of preliminary performance test using present beams and a radiation source will be reported.

Keywords

Acceleration; Current measurement; Data mining; Extraterrestrial measurements; Particle beams; Radio frequency; Saturation magnetization; Soft magnetic materials; Synchrotrons; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2005. PAC 2005. Proceedings of the

Print_ISBN

0-7803-8859-3

Type

conf

DOI

10.1109/PAC.2005.1590624

Filename

1590624