| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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Continuous operation of 2.45-GHz microwave proton source for 306 hours with more than 50 mA DC beam |
| Peng Shi-Xiang (彭士香)a, Zhang Ai-Lin (张艾霖)a b, Ren Hai-Tao (任海涛)a, Zhang Tao (张滔)a, Xu Yuan (徐源)a, Zhang Jing-Feng (张景丰)a, Gong Jian-Hua (龚建华)a, Guo Zhi-Yu (郭之虞)a, Chen Jia-Er (陈佳洱)a b |
a SKLNST & IHIP, School of Physics, Peking University, Beijing 100871, China;
b University of Chinese Academy of Sciences, Beijing 100049, China |
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Abstract 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 is 122 hours.
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Received: 24 February 2015
Revised: 08 April 2015
Accepted manuscript online:
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PACS:
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52.50.Sw
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(Plasma heating by microwaves; ECR, LH, collisional heating)
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52.50.Dg
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(Plasma sources)
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52.59.-f
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(Intense particle beams and radiation sources)
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52.80.Pi
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(High-frequency and RF discharges)
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| Fund: Project supported by the National Basic Research Program of China (Grant No. 2014CB845502) and the National Natural Science Foundation of China (Grant No. 91126004). |
Corresponding Authors:
Peng Shi-Xiang
E-mail: sxpeng@pku.edu.cn
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Cite this article:
Peng Shi-Xiang (彭士香), Zhang Ai-Lin (张艾霖), Ren Hai-Tao (任海涛), Zhang Tao (张滔), Xu Yuan (徐源), Zhang Jing-Feng (张景丰), Gong Jian-Hua (龚建华), Guo Zhi-Yu (郭之虞), Chen Jia-Er (陈佳洱) Continuous operation of 2.45-GHz microwave proton source for 306 hours with more than 50 mA DC beam 2015 Chin. Phys. B 24 075203
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