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Peng, Y.M.

Paper Title Page
TUPEB020 Beam Dynamic Issues in the BEPCII Luminosity Commissioning 1560
 
  • Q. Qin, N. Huang, D. Ji, Y. Jiao, Y.D. Liu, Y.M. Peng, D. Wang, J.Q. Wang, N. Wang, X.H. Wang, Y. Wei, X.M. Wen, J. Xing, G. Xu, C.H. Yu, C. Zhang, Y. Zhang
    IHEP Beijing, Beijing
  • Z. Duan
    IHEP Beiing, Beijing
  
 

As a tau-charm factory like collider, the upgrade project of the Beijing Electron Positron Collider (BEPCII), has reached its first design value of luminosity. During the commissioning of its luminosity, beam optics recovery, machine parameters measurement, detector solenoid compensation, and instability cure are main problems we met. Besides commissioning the machine, beams were delivered to the users from high energy physics and synchrotron radiation. This paper summarizes the accelerator physics issues in the BEPCII luminosity commissioning.


Supported by National Natural Sciences Foundation of China (10725525)

  
THPE039 Optimization of dipole-field profiles for emittance reduction in storage rings 4605
 
  • C.-x. Wang, Y. Wang
    ANL, Argonne
  • Y.M. Peng
    IHEP Beijing, Beijing
  
 

Nonuniform dipoles with bending field variation have been studied for reducing storage ring emittance in recent years. According to a new minimum emittance theory, the effects of an arbitrary dipole can be characterized by two parameters. To have a better idea of the potentials of nonuniform dipoles, here we numerically explore the values of these two parameters for optimal emittance reduction.