Continuous operation of 2.45-GHz microwave proton source for 306 hours with more than 50 mA DC beam  

作　　者：彭士香 张艾霖 任海涛 张滔 徐源 张景丰 龚建华 郭之虞 陈佳洱 

机构地区：[1]SKLNST& IHIP,School of Physics,Peking University [2]University of Chinese Academy of Sciences

出　　处：《Chinese Physics B》2015年第7期327-329,共3页中国物理B（英文版）

基　　金：Project supported by the National Basic Research Program of China(Grant No.2014CB845502);the National Natural Science Foundation of China(Grant No.91126004)

摘　　要：This paper describes a long-term operation of the 2.45-GHz microwave proton source at Peking University. The DC proton beam of 50–55 mA with energy of 35 keV has been run for 306 hours continuously. Total beam availability,defined as 35-keV beam-on time divided by elapsed time, is higher than 99%. Water cooling machine failures cause all the downtime, and no plasma generator failure or high voltage breakdown is observed. The longest uninterrupted run time is122 hours.This paper describes a long-term operation of the 2.45-GHz microwave proton source at Peking University. The DC proton beam of 50–55 mA with energy of 35 keV has been run for 306 hours continuously. Total beam availability,defined as 35-keV beam-on time divided by elapsed time, is higher than 99%. Water cooling machine failures cause all the downtime, and no plasma generator failure or high voltage breakdown is observed. The longest uninterrupted run time is122 hours.

关 键 词：ECR ion source DC proton beam plasma generator failure high voltage breakdown 

分 类 号：O572.341[理学—粒子物理与原子核物理]