STUDIES ON THE PHOTOELECTRON CLOUD AT THE BEPC

摘要

Many experiments on photoelectron instability (PEI) have been earned out at the Beijing Electron Positron Collider (BEPC) in IHEP, China, in collaboration with KEK. Based on the detectors at Advanced Photon Source (APS), ANL, a specially-constructed detector was installed in the BEPC. It is hoped to obtain realistic values for the photoelectron (PE) and secondary electron yields as well as the energy spectrum of the electron cloud through the direct measurements of the properties of the PE cloud for both stable and unstable beams. In this paper, the experimental results at the BEPC are presented after the description of the instrumentation, and some results of simulation and discussions are followed afterwards.