Calibration of Turn-by-Turn System of HLS and Its Application

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WANG Jun-Hua, LIU Jian-Hong, SUN Bao-Gen, LI Wei-Min, LIU Zu-Ping and YANG Yong-Liang. Calibration of Turn-by-Turn System of HLS and Its Application[J]. Chinese Physics C, 2004, 28(5): 544-548.
WANG Jun-Hua, LIU Jian-Hong, SUN Bao-Gen, LI Wei-Min, LIU Zu-Ping and YANG Yong-Liang. Calibration of Turn-by-Turn System of HLS and Its Application[J]. Chinese Physics C, 2004, 28(5): 544-548. shu
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Received: 2003-07-01
Revised: 1900-01-01
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Calibration of Turn-by-Turn System of HLS and Its Application

    Corresponding author: WANG Jun-Hua,
  • NSRL,University of Science and Technology of China,Hefei 230029,China

Abstract: In this paper, the turn-by-turn system of Hefei Light Source (HLS), and the log-ratio electronics circuit with working frequence 408MHz (2*RF of HLS) are described. They are used to monitor the injection effectiveness, damping rate, β oscillation and v variation for research the instability of beam. The Log-ratio signal processor has low noise, high bandwidth and wide dynamic range, as well as linear response. The calibration of the system and its application in commissioning of the upgraded injection system of HLS is emphases. The practice proves the turn-by-turn BPM system is quite useful for the beam-injection adjusting and indispensable for machine research.

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