Author/Authors :
Kii، نويسنده , , Toshiteru and Masuda، نويسنده , , Kai and Amazaki، نويسنده , , Satoshi and Horii، نويسنده , , Tomohiro and Toku، نويسنده , , Hisayuki and Yoshikawa، نويسنده , , Kiyoshi and Ohgaki، نويسنده , , Hideaki and Yamazaki، نويسنده , , Tetsuo، نويسنده ,
Abstract :
Back-streaming electrons in thermionic RF guns give a serious thermal effect to a cathode. In this study, the back-streaming beam power onto a thermionic cathode of the IAE RF gun was evaluated quantitatively by using an infrared radiation thermometer. Time evolutions of cathode surface temperature during RF macro-pulse were also calculated by using a simple 1-dimensional heat conduction model and results of a 2-dimensional particle simulation for several methods expected to reduce back-bombardment effect.
