Author: Cao, J.S.
Paper Title Page
MOP003
 Design of HEPS Storage Ring Beam Instrumentation  
 
  • J.H. Yue, J.S. Cao, Y.Y. Du, J. He, F. Liu, X.Y. Liu, Z. Liu, Y.H. Lu, H.Z. Ma, Y.F. Sui, L. Wang, S.J. Wei, T.G. Xu, Q. Ye, L. Yu, W. Zhang, Y. Zhao, D.C. Zhu
    IHEP, Beijing, People’s Republic of China
  • A.X. Wang
    USTC/NSRL, Hefei, Anhui, People’s Republic of China
  
  HEPS is a fourth generation light source which has horizontal emittance around 34pm.rad to gain the high brilliance photon beam, this ultra-low emittance brings many engineering challenges for beam instrumentation. The resolution of the beam position measurement and the beam size measurement is need to reach sub-micro meter. The large current and multi-bunches need bunch by bunch feedback system to cure instabilities. This paper will present an overview of beam instrumentation  
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MOP024
 The Design and Optimization of Digital Beam Position Monitor Processor in HEPS  
 
  • Y.Y. Du, J.S. Cao, Z. Liu, Y.F. Sui, S.J. Wei, Q. Ye, J.H. Yue
    IHEP, Beijing, People’s Republic of China
  
  The Digital Beam Position Monitor (DBPM) is an important component of the High Energy Photon Source (HEPS). This article mainly introduces the design and development of the digital beam position measurement system based on the main indicators of HEPS, including the overall architecture design of the system, digital electronics design, RF electronics design, and the exposition of core algorithm design. It also provides a detailed performance comparison between the two versions of electronic design before and after optimization, including performance indicators such as flow-dependent, long-term stability, and position resolution. In laboratory testing, under the condition of an input signal of 499.8MHz and K factor is 8.26, the position resolution per turn by turn (TBT) is less than 1um, the fast orbit position resolution (FA) is less than 100nm, and the closed orbit position resolution (SA) is less than 10nm. The beam current-dependence and long-term stability are significantly better than the previous version, and the test results meet the design requirements of the High Energy Photon Source.  
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MOP026 A Novel BPM Mechanical Center Calibration Method Based on Laser Ranging 82
 
  • X.H. Tang, J.S. Cao, Y.Y. Du, J. He, Y.F. Sui, J.H. Yue
    IHEP, Beijing, People’s Republic of China
  
  Determining the mechanical center of the beam position monitor(BPM) has been a difficulty for BPM calibration. To solve this problem, a method of positioning the BPM mechanical center based on laser ranging is proposed. This method uses high-precision antenna support as the core locating datum, and high-precision laser ranging sensors(LRSs) as the detection tool. By detecting the distances from the LRSs to the antenna support and the distances from the LRSs to the BPM, the mechanical center of the BPM can be indirectly determined. The theoretical system error of this method is within 20¿m, and the experimental results show that the measurement repeatability is less than 40¿m, This method has low cost and fast speed, which can be used for large-scale calibration.  
poster icon Poster MOP026 [1.142 MB]  
DOI • reference for this paper ※ doi:10.18429/JACoW-IBIC2023-MOP026  
About • Received ※ 13 July 2023 — Revised ※ 07 September 2023 — Accepted ※ 14 September 2023 — Issue date ※ 26 September 2023
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