Skip to main content
SpringerLink
Log in

Digital bunch-by-bunch transverse feedback system at SSRF

  • Research Paper
  • Special Issue on the First Chinese Particle Accelerator Conference (2010)
  • Published:
Science China Physics, Mechanics and Astronomy Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. Khan S, Knuth T. Bessy II feedback system. In: PAC1999, New York, 1999. 1144–1146

  2. Barry W, Byrd J, Corlett J, et al. Commissioning of the ALS Transverse coupled-bunch feedback system. In: PAC95, Dallas, TX, 1995. 2423–2425

  3. Nakamura T, Date S, Kobayashi K, et al. Transverse bunch-by-bunch feedback system for the Spring-8 storage ring. In: EPAC2004, Lucerne, Switzerland, 2004. 2649–2651

  4. Bulfone B, Forchi V, Lonza M, et al. The Elettra digital transverse multi-bunch feedback systems. In: EPAC2002, Paris, France, 2002. 2061–2063

  5. Dehler M, Schlott V, Bulfone B, et al. Current status of the Elettra/ SLS transverse multi-bunch feedback. In: EPAC2000, Vienna, Austria, 2000. 1894–1896

Download references

Author information

Authors and Affiliations

  1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, 201800, China

    RenXian Yuan, YongBin Leng, LuYang Yu, LiFeng Han & KaiRong Ye

Authors
  1. RenXian Yuan
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. YongBin Leng
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. LuYang Yu
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. LiFeng Han
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. KaiRong Ye
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to RenXian Yuan.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Yuan, R., Leng, Y., Yu, L. et al. Digital bunch-by-bunch transverse feedback system at SSRF. Sci. China Phys. Mech. Astron. 54 (Suppl 2), 305–308 (2011). https://doi.org/10.1007/s11433-011-4605-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s11433-011-4605-5

Keywords

Search

Navigation