Feedback Suppression of β Oscillation in Injection of HLS

WANG Jun-Hua; GONG Ding; LIU Jian-Hong; ZHENG Kai; YANG Yong-Liang; SUN Bao-Gen; LU Ping

Chinese Physics C> 2004, Vol. 28> Issue(4) : 426-430

Feedback Suppression of β Oscillation in Injection of HLS

NSRL,University of Science and Technology of China,Hefei 230029,China

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Abstract：
In order to improve the accumulation of the injected beam, it is necessary to restrain β-oscillation because of injection system error. This paper systematically introduces the design principle and circuit of the feedback system for the injected β-oscillation suppression of HLS. It also provides the preliminary experimental results. As the proof of the theory and pre-study, we use a relatively simple analog filter and phase shifter to agitate the Kicker course, which causes the β-oscillation, and get the feedback, from which we see the obvious suppression effect. All of these are the foundation of feedback system of bunch-by-bunch and lower frequency in the future, which are for the research of transverse beam & lognitudinal beam instability.

References

[1]

. WANG Jun-Hua et al. High Power Laser and Part icle Beams, 2004,16( 1) 2. Heins D, Klute J. The Transverse Damping System With DSP PLL Tune Measurement for HERAP, DESY, Hamburg, Germany. DESY-M-Reports 19963. Drees A, Nrennan M. A Transverse Injection Damper at RHIC. In: G.A. Smith, T. Russo. Brookhaven National Lab, CP648, BIW 2002,Tenth Workshop National Lab4. WANG Jun-Hua et al. High Power Laser and Part icle Beams, 2002,14( 4) : 485 4885. Bergoz Log-Radio. Beam Position Monitor User. s Manual6. WANG Jun-Hua et al. Cal ibrat ion of Turn-By-Turn Syst em of HLS and it. s Application, HEP NP, to be published 7. JING Jian-Ming. WANG Jian-Guo. The FEM of Electromagnetic.Xi'an: XIDIAN University Publishing Company, 1998. 8. Ansoft HFSS Users Guide: Radiat ion Boundaries

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WANG Jun-Hua, GONG Ding, LIU Jian-Hong, ZHENG Kai, YANG Yong-Liang, SUN Bao-Gen and LU Ping. Feedback Suppression of β Oscillation in Injection of HLS[J]. Chinese Physics C, 2004, 28(4): 426-430.

WANG Jun-Hua, GONG Ding, LIU Jian-Hong, ZHENG Kai, YANG Yong-Liang, SUN Bao-Gen and LU Ping. Feedback Suppression of β Oscillation in Injection of HLS[J]. Chinese Physics C, 2004, 28(4): 426-430. shu

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Received: 2003-07-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Feedback Suppression of β Oscillation in Injection of HLS

Corresponding author: WANG Jun-Hua,

NSRL,University of Science and Technology of China,Hefei 230029,China

Received Date: 2003-07-01
Accepted Date: 1900-01-01
Available Online: 2004-04-05

Abstract: In order to improve the accumulation of the injected beam, it is necessary to restrain β-oscillation because of injection system error. This paper systematically introduces the design principle and circuit of the feedback system for the injected β-oscillation suppression of HLS. It also provides the preliminary experimental results. As the proof of the theory and pre-study, we use a relatively simple analog filter and phase shifter to agitate the Kicker course, which causes the β-oscillation, and get the feedback, from which we see the obvious suppression effect. All of these are the foundation of feedback system of bunch-by-bunch and lower frequency in the future, which are for the research of transverse beam & lognitudinal beam instability.