A Prototype of residual gas ionization profile monitor for J-PARC RCS

Sato, Kenichiro; Hayashi, Naoki  ; Lee, S.*; Toyama, Takeshi*

A prototype of residual gas ionization profile monitor (IPM) for J-PARC RCS has been developed. It consists of electrodes producing electric field to collect ionized ions/electrons, MCP as a signal read-out device, an electron generator to evaluate the gain balance of MCP channels, and a wiggler type magnet producing guiding field. The monitor has been installed in KEK-PS main ring and has been examined using proton beam. At the conference, recent preliminary results of experiments are reported.