THE PUMPING PERFORMANCE OF LIQUID HELIUM CRYOCONDENSATION PUMP FOR NEUTRAL BEAM INJECTOR

摘要：

Liquid helium (LHe) cryocondensation pump is an ideal vacuum pumping device for maintaining a specified pressure distribution inside the neutral beam injector system (NBIS). Its structure is different from that of cryocondensation pump used in industry or small laboratory. In order to optimize its cryopumping performance, parameters necessary for evaluating the pumping performance was analyzed. Measurements to optimize them were obtained. One prototype cryocondensation pump mounted in the drift tube of NBIS was designed and manufactured. Pumping performance test for pumping speed, pumping capacity was done. The results indicate that a LHe cryocondensation pump with designed cryopanel structure could meet the requirement of NBIS for vacuum system very well. The results may apply to the cryopanel cooled by forced flow LHe.

作者: Chundong HU Yuanlai XIE Zhengrong OUYANG

作者单位: Institute of Plasma Physics, Chinese Academy of Science P.O. Box 1126, 230031 Hefei, China

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）