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Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current

Publication ,  Journal Article
Xu, W; Li, JY; Huang, SL; Wu, WZ; Hao, H; Wang, P; Wu, YK
Published in: Chinese Physics C
October 1, 2014

The Duke storage ring is a dedicated driver for the storage ring based oscillator free-electron lasers (FELs), and the High Intensity Gamma-ray Source (HIGS). It is operated with a beam current ranging from about 1 mA to 100 mA per bunch for various operations and accelerator physics studies. High performance operations of the FEL and γ-ray source require a stable electron beam orbit, which has been realized by the global orbit feedback system. As a critical part of the orbit feedback system, the electron beam position monitors (BPMs) are required to be able to precisely measure the electron beam orbit in a wide range of the single-bunch current. However, the high peak voltage of the BPM pickups associated with high single-bunch current degrades the performance of the BPM electronics, and can potentially damage the BPM electronics. A signal conditioning method using low pass filters is developed to reduce the peak voltage to protect the BPM electronics, and to make the BPMs capable of working with a wide range of single-bunch current. Simulations and electron beam based tests are performed. The results show that the Duke storage ring BPM system is capable of providing precise orbit measurements to ensure highly stable FEL and HIGS operations.

Duke Scholars

Published In

Chinese Physics C

DOI

ISSN

1674-1137

Publication Date

October 1, 2014

Volume

38

Issue

10

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
 

Citation

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Xu, W., Li, J. Y., Huang, S. L., Wu, W. Z., Hao, H., Wang, P., & Wu, Y. K. (2014). Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current. Chinese Physics C, 38(10). https://doi.org/10.1088/1674-1137/38/10/107003
Xu, W., J. Y. Li, S. L. Huang, W. Z. Wu, H. Hao, P. Wang, and Y. K. Wu. “Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current.” Chinese Physics C 38, no. 10 (October 1, 2014). https://doi.org/10.1088/1674-1137/38/10/107003.
Xu W, Li JY, Huang SL, Wu WZ, Hao H, Wang P, et al. Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current. Chinese Physics C. 2014 Oct 1;38(10).
Xu, W., et al. “Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current.” Chinese Physics C, vol. 38, no. 10, Oct. 2014. Scopus, doi:10.1088/1674-1137/38/10/107003.
Xu W, Li JY, Huang SL, Wu WZ, Hao H, Wang P, Wu YK. Conditioning of BPM pickup signals for operations of the Duke storage ring with a wide range of single-bunch current. Chinese Physics C. 2014 Oct 1;38(10).
Journal cover image

Published In

Chinese Physics C

DOI

ISSN

1674-1137

Publication Date

October 1, 2014

Volume

38

Issue

10

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5102 Atomic, molecular and optical physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics