Digital RF feedforward systems for beam loading compensation in JKJ synchrotrons

Tamura, Fumihiko ; Yamamoto, Masanobu ; Yoshii, Masahito*; Schnase, A.*; Omori, Chihiro*; Uesugi, Tomonori*

We present the concept and the design of the high-speed digital RF feedforward systems for beam loading compensation in the synchrotrons of JAERI-KEK Joint Project (JKJ). JKJ synchrotrons are high intensity proton synchrotrons at the energy of 3 and 50 GeV, in which beam loading compensation systems are necessary. Beam loading compensation is to be realized by full-digital RF feedforward systems. We describe the implementation details of the feedforward systems. The system consists of a down-converter, digital filters, and an up-converter. We present two possible implementations of the filters; one uses ASIC filter chips and the other uses FPGA.

Language	:	English
Journal	:	Proceedings of 8th European Particle Accelerator Conference (EPAC 2002)
Volume	:
Number	:
Pages	:	p.2106 - 2108
Publication Year/Month	:	2002/00
Meeting title	:	8th European Particle Accelerator Conference (EPAC 2002)
Held date	:	2002/06
Location (city)	:	Paris
Location (country)	:	France
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DOI for research data	:	Link to research data related to this paper/report.
Keywords	:	JKJ; RF; Ring; Feedback; Feedforward; Beam Loading
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Registration No. : B20020298
JAEA Abstracts No. :
Paper Submission No. : 1420

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