New progress on beam availability and reliability of PKU high intensity CW proton ECR ion source

Peng Shi-Xiang^{1, †}, Zhang Ai-Lin^{1, 2}, Ren Hai-Tao¹, Xu Yuan¹, Zhang Tao¹, Zhang Jing-Feng¹, Wen Jia-Mei¹, Guo Zhi-Yu¹, Chen Jia-Er^{1, 2}

(color online) Screenshot of the monitor computer at the end of longevity test. Top: extraction voltage, instantaneous current, and counting hours. Bottom: beam current versus elapsed time.