CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Digital bunch-by-bunch transverse feedback system at SSRF
Yuan, RX; Leng, YB(冷用斌); Yu, LY(俞路阳); Han, LF(韩利峰); Ye, KR(叶恺容)
2011
Conference Name1st Chinese Particle Accelerator Conference (CPAC)
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
PagesS305
Conference DateOCT 18-20, 2010
Conference PlaceBeijing, PEOPLES R CHINA
AbstractIn order to suppress multi-bunch couple instabilities caused by transverse impedance, a bunch-by-bunch transverse feedback system based on a FPGA digital processor is commissioned at SSRF storage ring. The RF front end has two COD pre-rejected attenuators for increasing the system arrangement and signal noise ratio, and the 3*RF Local signal comes from the BPM's sum signal using a FIR filter for avoiding the effect of longitudinal oscillation. The digital processor receives the coupled horizontal and vertical oscillation signals in the base band and transforms the coupled signals to the horizontal and vertical feedback signals with two series double-zeroes FIR filters. A matlab GUI is applied for producing the FIR coefficients when the tune is shifted. The horizontal and vertical Kickers have a special design for increasing the shunt impedance. Then the multi-bunch instabilities are suppressed respectively and the minimum damping time is about 0.4 ms.
ISSN1674-7348
Indexed BySCI
Funding Project应物所课题组
Language英语
Document Type会议论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9620
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Yuan, RX,Leng, YB,Yu, LY,et al. Digital bunch-by-bunch transverse feedback system at SSRF[C],2011:S305.
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