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

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  
【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 m A with energy of 35 ke V has been run for 306 hours continuously. Total beam availability,defined as 35-ke V 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.

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