The Kicker impedance and its effect on the RCS in J-PARC

Shobuda, Yoshihiro ; Saha, P. K. ; Toyama, Takeshi*; Yamamoto, Masanobu ; Chin, Y. H.*; Irie, Yoshiro*

Measurements demonstrate that the kicker impedance dominates along the RCS. Based on a newly developed theory, the impedance is measured by observing the beam-induced voltages at the ends of power cable of the kicker. Toward one mega-watt goal, it is essential to take advantage of tune manipulations and the space charge damping effect. We propose the reduction scheme of the kicker impedance by attaching the resistors combined with four diodes in parallel at the ends of the kicker cables, to pursue the ultimate goal at the RCS.

Language	:	English
Journal	:	Proceedings of 54th ICFA Advanced Beam Dynamics Workshop on High-Intensity, High Brightness and High Power Hadron Beams (HB 2014) (Internet)
Volume	:
Number	:
Pages	:	p.369 - 373
Publication Year/Month	:	2015/03
Meeting title	:	54th ICFA Advanced Beam Dynamics Workshop on High-Intensity, High Brightness and High Power Hadron Beams (HB 2014)
Held date	:	2014/11
Location (city)	:	East Lansing
Location (country)	:	U.S.A.
Patent information	:
PDF	:
Paper URL	:	http://epaper.kek.jp/HB2014/papers/tho2ab02.pdf http://epaper.kek.jp/HB2014/talks/tho2ab02_talk.pdf
DOI for research data	:
Keywords	:	no keyword
Research Facility	:	J-PARC加速器
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:

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Registration No. : BB20142369
JAEA Abstracts No. : 43001380
Paper Submission No. : 16472

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