6-19 On-Line Operation and Machine Study of LECR4

• 作者: Fang Xing Guo Junwei Li Xixia Lu Wang Ma Baohua Qian Cheng Sun Liangting Wang Hui Yang Yao Zhang Xuezheng Zhao Hongwei
• 来源期刊: 中国科学院近代物理研究所和兰州重离子研究装置年报：英文版
• 学科: 物理学
• 年，卷（期）: 2016,（1）
• 页码范围: 269-270
• 页数: 2页
• 分类号: O4

摘要

LECR4 is the first ECR ion source using evaporative cooling technology in the world.Its unique feature is that the solenoids were made from solid square copper wires(3.32 mm×5.77 mm with insulation),and that all the coils are entirely immersed in the room temperature coolant.The coils can produce a maximum axial magnetic field up to 2.5 T.LECR4 aims to provide intense multiple charge state ion beams for SSC-Linac project-a new Linear injector for the Separated Sector Cyclotron(SSC).Presently,some ion beams with different M/Q ratio have been accelerated successfully with the RFQ and DTL,such as 200 eμA of 16O^5+,200 eμA of 40Ar^8+,50 eμA of 209Bi^30+etc.The measured transmission efficiency of RFQ is up to 90%.The layout of LECR4 ion source and the LEBT is shown in Fig.1.