title: High intensity high charge state ion beam production with an evaporative cooling magnet ECRIS.
abstract: LECR4 (Lanzhou ECR ion source No. 4) is a room temperature electron cyclotron resonance ion source, designed to produce high current, high charge state ion beams for the SSC-LINAC injector (a new injector for sector separated cyclotron) at the Institute of Modern Physics. LECR4 also serves as a PoP machine for the application of evaporative cooling technology in accelerator field. To achieve those goals, LECR4 ECR ion source has been optimized for the operation at 18 GHz. During 2014, LECR4 ion source was commissioned at 18 GHz microwave of 1.6 kW. To further study the influence of injection stage to the production of medium and high charge state ion beams, in March 2015, the injection stage with pumping system was installed, and some optimum results were produced, such as 560 eμA of O(7+), 620 eμA of Ar(11+), 430 eμA of Ar(12+), 430 eμA of Xe(20+), and so on. The comparison will be discussed in the paper.
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: W
authors.initials: W
authors.lastname: Lu
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: C
authors.initials: C
authors.lastname: Qian
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: L T
authors.initials: LT
authors.lastname: Sun
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: X Z
authors.initials: XZ
authors.lastname: Zhang
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: X
authors.initials: X
authors.lastname: Fang
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: J W
authors.initials: JW
authors.lastname: Guo
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: Y C
authors.initials: YC
authors.lastname: Feng
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: B H
authors.initials: BH
authors.lastname: Ma
authors.affiliation: Institute of Electrical Engineering, CAS, Beijing 100190, China.
authors.forename: B
authors.initials: B
authors.lastname: Xiong
authors.affiliation: Institute of Electrical Engineering, CAS, Beijing 100190, China.
authors.forename: L
authors.initials: L
authors.lastname: Ruan
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: H W
authors.initials: HW
authors.lastname: Zhao
authors.affiliation: Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 73000, China.
authors.forename: W L
authors.initials: WL
authors.lastname: Zhan
authors.affiliation: Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.
authors.forename: D
authors.initials: D
authors.lastname: Xie