Author: Geng, H.
Paper Title Page
THPAB002 Lattice Design for BEPCII Upgrade 3756
 
  • H. Geng, W.B. Liu, J. Qiu, J. Xing, C.H. Yu, Y. Zhang
    IHEP, Beijing, People’s Republic of China
 
  The Beijing Electron Positron Collider II (BEPCII) has achieved a series of achievements in high-energy physics study. Along with the deepening of the research, more important physics is expected in higher energy regions (>2.1 GeV). As the upper limit of BEPCII design energy is 2.1GeV, an urgent upgrade is required for BEPCII. To achieve a higher luminosity at higher energy, the number of RF cavities is expected to be doubled. In this paper, the lattice design for the upgrade of BEPCII is studied. The dynamic aperture tracking result shows that the lattice could meet the injection requirement of the BEPCII beam with a reasonable margin.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB002  
About • paper received ※ 14 May 2021       paper accepted ※ 17 June 2021       issue date ※ 14 August 2021  
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THPAB003 Application of Generalized Gaussian Distribution in the Processing the Wire Scanner Data 3759
 
  • H. Geng, C. Meng, F. Yan, Y. Zhang, Y.L. Zhao
    IHEP, Beijing, People’s Republic of China
 
  Wire scanners are widely used for measuring beam emittance in both electron and hadron accelerators. Gaussian fitting is the most commonly used method in processing the wire scanner data. But in hadron machines, beams are normally not gaussian distribution due to the action of nonlinear forces such as space charge effect. Under these circumstances, there would be big deviations if the wire scanner data was still fitted with gaussian distributions. This paper introduces generalized Gaussian distribution in the processing the wire scanner data measured in the ADS injector-I. The results using different fitting method will be compared.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-THPAB003  
About • paper received ※ 14 May 2021       paper accepted ※ 18 June 2021       issue date ※ 30 August 2021  
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