Digital feedback control for 972 MHz RF system of J-PARC linac

Michizono, Shinichiro*; Fang, Z.*; Matsumoto, Toshihiro*; Yamaguchi, Seiya*; Kobayashi, Tetsuya; Okada, Yoshihito*

Upgrade of J-PARC linac has been planed using 972 MHz rf system. The rf eld regulation is required to be less than 1% in amplitude and 1 $^{circ}$ . in phase. The basic digital llrf concept is same as the present 324 MHz llrf system using a compact PCI crate. The main alterations are rf and clock generator (RF&LK), mixer and IQ modulator (IQ&Mixer) and digital llrf algorithm. Since the typical decay time is faster (due to higher operational frequency than present 324 MHz cavity), chopped beam compensation is one of the main concerns. Performance of the digital feedback system using a cavity simulator is summarized.

Language	:	English
Journal	:	Proceedings of 2009 Particle Accelerator Conference (PAC '09) (DVD-ROM)
Volume	:
Number	:
Pages	:	p.2201 - 2203
Publication Year/Month	:	2009/05
Meeting title	:	2009 Particle Accelerator Conference (PAC '09)
Held date	:	2009/05
Location (city)	:	Vancouver
Location (country)	:	Canada
Patent information	:
PDF	:
Paper URL	:
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. : BB20090346
JAEA Abstracts No. :
Paper Submission No. : 8512

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