A high sensitivity tune measurement system for BEPCII

Background The tune is one of the most important parameters of the storage ring which play a crucial role in the brightness optimization. The synchrotron radiation will suppress the oscillation and make the detection unusual difficulty without any kicker excitation. Purpose A new high sensitivity tu...

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Bibliographic Details
Published in:Radiation detection technology and methods 2022-03, Vol.6 (1), p.88-96
Main Authors: He, Jun, Sui, Yan-feng, Lu, Yan-hua, Du, Yao-yao, Wang, Lin, Ma, Hui-zhou, Li, Yong, Zhao, Ying, Yu, Ling-da, Xu, Tao-guang, Yue, Jun-hui, Cao, Jian-she
Format: Article
Language:English
Subjects:
Beam Physics
Hadrons
Heavy Ions
Nuclear Energy
Nuclear Physics
Original Paper
Particle Acceleration and Detection
Physics
Physics and Astronomy
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Summary:Background The tune is one of the most important parameters of the storage ring which play a crucial role in the brightness optimization. The synchrotron radiation will suppress the oscillation and make the detection unusual difficulty without any kicker excitation. Purpose A new high sensitivity tune measurement system is developed to show the real-time tune during the colliding. Method Peak diode detectors are used to convert short beam pulses from a button BPM into slowly varying signals. Their DC components, constituting a large background related to beam offsets, are suppressed by series capacitors, while the small signals related to beam oscillations are passed to the subsequent stages for amplification and filtering. Conclusion A direct diode detection technique based on the diode peak hold circuit could increase the sensitivity by hundreds time which gets a clearly tune peak even with synchrotron radiation and bunch-by-bunch feedback damping.
ISSN:2509-9930
2509-9949
DOI:10.1007/s41605-021-00300-6