Speaker
Kota Okabe
(Japan Proton Accelerator Research Complex)
Description
The main source of beam instability in the J-PARC 3-GeV RCS is the impedance of the eight installed kickers. This arises because one end of each kicker magnet is shorted while the other end is left open during beam acceleration. The shorted-end configuration provides the benefit of power savings during beam extraction from the RCS. However, it also excites beam instability. To retain the energy-saving benefit while suppressing beam instability, we developed a diode stack with resistors and inserted it at the open ends of four kickers. This configuration effectively suppresses beam instability for smaller-emittance beams, which are delivered to the MR at J-PARC.
Region represented | Asia |
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Paper preparation format | LaTeX |
Author
Yoshihiro Shobuda
(Japan Proton Accelerator Research Complex)
Co-authors
Ippei Yamada
(Japan Atomic Energy Agency)
Kota Okabe
(Japan Proton Accelerator Research Complex)
Pranab Saha
(Japan Proton Accelerator Research Complex)