Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
E5-4 experimental electron gun system is the improved version of BEPC gun system. Firstly, some theoretical analyses on E5-4 gun are performed. Beam testing result is then introduced. The test is based on Y796 cathode-grid assembly, new power supply system and new pulser system. Impacts of different parameters on beam current are analyzed. This experimental electron gun system has played an important directive role on the research and manufacturing of BEPC II electron gun system.