Status of CSNS H-ion source  

作　　者：刘盛进 黄涛 欧阳华甫 赵福祥 肖永川 吕永佳 曹秀霞 薛康佳 张俊嵩 徐韬光 李芳 卢艳华 李刚 杨雷 李仪 

机构地区：[1]China Spallation Neutron Source (CSNS), Institute of High Energy Physics (IHEP),Chinese Academy of Sciences (CAS) [2]Dongguan Institute of Neutron Science (DINS) [3]Dongguan University of Technology

出　　处：《Chinese Physics C》2015年第5期121-125,共5页中国物理C（英文版）

基　　金：Supported by NSFC(91126003)

摘　　要：A new H^- ion source has been installed successfully and will be used to serve the China Spallation Neutron Source （CSNS）. In this paper, we report various components of the ion source, including the discharge chamber, temperature, cooling system, extraction electrodes, analyzing magnet, remote control system and so on. Compared to the previous experimental ion source, some improvements have been made to make the ion source more compact and convenient. In the present arrangement, the Penning field is generated by a pair of pole tip extensions on the 90° analyzing magnet instead of by a separate circuit. For the remote control system, F3RP61-2L is applied to the accelerator online control system for the first time. In the running of the ion source, a stable pulse H^- beam with a current of 50 mA at an energy of 50 keV is produced. The extraction frequency and pulse width is 25 Hz and 500 μs, respectively. Furthermore, an emittance scanner has been installed and measurements are in progress.A new H^- ion source has been installed successfully and will be used to serve the China Spallation Neutron Source （CSNS）. In this paper, we report various components of the ion source, including the discharge chamber, temperature, cooling system, extraction electrodes, analyzing magnet, remote control system and so on. Compared to the previous experimental ion source, some improvements have been made to make the ion source more compact and convenient. In the present arrangement, the Penning field is generated by a pair of pole tip extensions on the 90° analyzing magnet instead of by a separate circuit. For the remote control system, F3RP61-2L is applied to the accelerator online control system for the first time. In the running of the ion source, a stable pulse H^- beam with a current of 50 mA at an energy of 50 keV is produced. The extraction frequency and pulse width is 25 Hz and 500 μs, respectively. Furthermore, an emittance scanner has been installed and measurements are in progress.

关 键 词：H^- ion source Penning surface plasma source CSNS EMITTANCE 

分 类 号：O53[理学—等离子体物理]