Some results were made on velvet's electron emitting characteristics under multi-pulse mode. The vacuum diode voltages are 1MV for two-pulse mode and 500kV for four-pulse mode. Pulse to pulse separation is 400ns. The research indicates that under multi-pulse mode velvet's emitting is not uniform and what leads to beam's degradation is cathode plasma motion.
Published in:
Vacuum Electron Sources Conference, 2004. Proceedings. IVESC 2004. The 5th International
Date of Conference: 6-10 Sept. 2004