Knowledge Management System Of Shanghai Institute of Applied Physics, CAS
| 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 Name | 1st Chinese Particle Accelerator Conference (CPAC) |
| Source Publication | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY |
| Pages | S305 |
| Conference Date | OCT 18-20, 2010 |
| Conference Place | Beijing, PEOPLES R CHINA |
| Abstract | In 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. |
| ISSN | 1674-7348 |
| Indexed By | SCI |
| Funding Project | 应物所课题组 |
| Language | 英语 |
| Document Type | 会议论文 |
| Identifier | http://ir.sinap.ac.cn/handle/331007/9620 |
| Collection | 中科院上海应用物理研究所2011-2020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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