Speaker
Katsuhiro Moriya
(Japan Atomic Energy Agency)
Description
J-PARC Linac accelerates the high-intensity beam of 50 mA using an RF system of 324 MHz and 972 MHz. In order to accelerate and transport the high-intensity beam to facilities stably, the current value, centroid, and distribution of the beam must be measured to realize optimum operating conditions. This paper reports on the transformations and improvements of the linac beam diagnostics since 2015. As an example, carbon nanotubes (CNTs) were employed in the WSM at the upstream of the linac. There has never been an unintentional WSM failure after the CNT replacement. Other reports on the status of BSM operations will also be presented. The diagnosis of beam anomalies experienced during beam tuning will also be reported.
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Author
Katsuhiro Moriya
(Japan Atomic Energy Agency)
Co-authors
Tomoaki Miyao
(High Energy Accelerator Research Organization)
Masaki Ishikawa
(Japan Atomic Energy Agency)
Motoki Chimura
(Japan Atomic Energy Agency)
Hiroki Takahashi
(Japan Atomic Energy Agency)
Yuko Morohashi
(Japan Atomic Energy Agency)
Kenichi Takeishi
(Japan Atomic Energy Agency)
Junichiro Kamiya
(Japan Atomic Energy Agency)
