Author: Sui, Y.F.
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MOPB025 Heating Analysis and the Solutions of DCCT System for BEPCII 92
 
  • Y. Zhao, J.S. Cao, J. He, Y.F. Sui, L. Wang
    IHEP, Beijing, People's Republic of China
 
  The BEPCII e+ DCCT is damaged due to a high temperature heating. After 8 years operating, it is not working properly in 2014. As the BEPCII is trying to reach high luminosity, the CT will be a defective component with the high beam current, therefore a spare one has replaced it. In order to determine the heating source, some experiments and simulations have been done. A new vacuum chamber structure has been designed to solve the problem. The analysis and result can be also applied to CT designs in the future.  
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TUPB028 Status of BPMs In the First Stage of Commissioning at CADS Injector I 390
 
  • H.Z. Ma, J.S. Cao, Y.F. Sui, Q. Ye
    IHEP, Beijing, People's Republic of China
 
  The paper will introduce the status for BPMs in the first stage of commissioning at CADS (China Accelerator Driven Subcritical System) Injector I. The measurement principles and results of BPM at injector I are presented. The measurement of BPM is rigorous in the first medium energy beam transport line of CADS Injector I. To ensure the safety of test cryomodule, beam orbit should be corrected to the minimized region. The third order fitting way is used to calculate the position of beam for BPM non-linearity. And the average of data in the single pass window should improve the resolution. Then BBA of BPM can help tracking beam position accurately. Finally the interlock circuit of BPM is tested with the beam.
[1]Jingyu Tang etc, IHEP-CADS Report/2012-01E
[2]Libera SPH page - http://www.i-tech.si/
[3]Weimin Pan, Internal Report in IHEP.
[4]Libera Single Pass H User Manual 2.80
 
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