CERN Accelerating science

Article
Title	Beam Diagnostics for the J-PARC Main Ring Synchrotron
Author(s)	Toyama, Takeshi ; Arakawa, Dai ; Hashimoto, Yoshinori ; Hayashi, Naoki ; Kishiro, Junichi ; Lee, Seishu ; Miura, Takako ; Muto, Suguru ; Toyokawa, Ryoji
Affiliation	(JAERI/J-PARC, Tokai-Mura, Naka-Gun, Ibaraki-Ken) ; (KEK, Ibaraki)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.958
Subject category	Accelerators and Storage Rings
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 of J-PARC (Japan Proton Accelerator Research Complex). This paper describes the basic design principle and specification of each monitor, with a stress on how to cope with high power beam (average circulation current of  12 A) and low beam loss operation (less than 1 W/m except a collimator region). Some results of preliminary performance test using present beams and a radiation source will be reported.