Bunch-by-Bunch Tracing-Measure System in HLS

ZHENG Kai; WANG Jun-Hua; LIU Jian-Hong; LIU Zu-Ping; LI Wei-Min; SUN Bao-Gen; ZHOU Ze-Ran; YANG Yong-Liang

Chinese Physics C> 2006, Vol. 30> Issue(6) : 577-580

Bunch-by-Bunch Tracing-Measure System in HLS

National Synchrotron Radiation Laboratory,University of Science and Technology of China, Hefei 230029, China

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Abstract：
In this paper, we introduce the Bunch-by-bunch tracing-measurement system in HLS, and describe some results of experiments and analyses. Using an in-phase gate signal for simulating beam signal and a frequency divided signal of RF for supplying external trigger of ADC, we test the reliability and the stability of this system. By this system, we trace and record a full process of injection, ramping, RF decreasing, closed orbit correcting, wiggler charging, adding skew-quadrupole and opening for users. The tune shift and the coupled bunch instability during the full process have been shown in the end.

References

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. HUANG W H, KANG H S, Kim D T et al. Transverse Feed-back System for PLS Storage Ring. Proceeding of APAC.Beijing, China, 2001, 302—3042. LIU Jian-Hong, WANG J H, PEI Y J et al. Bunch-by-Bunch Measurement System in HLS. Proceeding of PAC, Knoxville. Tennessee, USA, 20053. User Manual of 12 bits Digitizers by Acqiris4. LIU Jian-Hong. The Development of Beam Detect Systemand the Research of Instability in HLS Thesis, Doctor Degree. University of Science and Technology of China.(in Chinese)(刘建宏.HLS测量系统研制及小稳定性初步研究.中国科学技术大学)5. Mario Serio. Multi bunch Instabilities and Cures. Proceeding of PAC. New York, 19996. Balewski K. Review of Feedback System. Proceeding of EPAC. Stockholm, 1998

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ZHENG Kai, WANG Jun-Hua, LIU Jian-Hong, LIU Zu-Ping, LI Wei-Min, SUN Bao-Gen, ZHOU Ze-Ran and YANG Yong-Liang. Bunch-by-Bunch Tracing-Measure System in HLS[J]. Chinese Physics C, 2006, 30(6): 577-580.

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Received: 2005-08-01
Revised: 2005-10-10

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