Comparison of Supersonic Molecular Beam Injection from Both Low Field Side and High Field Side of HL-2A  

作　　者：姚良骅 赵大为 冯北滨 陈程远 周艳 韩晓玉 李永高 Jerome BUCALOSSI 段旭如 

机构地区：[1]Southwestern Institute of Physics [2]University of Electronic Science and Technology of China [3]Institute of Magnetic Fusion Research,CEA

出　　处：《Plasma Science and Technology》2010年第5期529-534,共6页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos.10675043, 10975049);Chinese National Fusion Project for ITER (No.2009GB104007)

摘　　要：SMBI （supersonic molecular beam injection）, as an effective fueling method for fusion plasmas, has been widely used on the HL-2A tokamak and other fusion devices. Two different types of SMBI system are now installed on HL-2A. One is an electromagnetic valve injector on the low field side （LFS）, and the other is a pneumatic valve injector on the high field side （HFS）. A new electron density record nc = 4.7× 10^19 m ^-3 which exceeds both the Oreenwald density limit and the maximum density obtained by gas puffing （GP）, was obtained on HL-2A with single-null-divertor operation. The HFS injection system is still under test, however, its outstanding fueling characteristics have already been observed, e.g. it has higher fueling efficiency compared to the LFS system. This excellent feature is still preserved during the process of ECRH.SMBI （supersonic molecular beam injection）, as an effective fueling method for fusion plasmas, has been widely used on the HL-2A tokamak and other fusion devices. Two different types of SMBI system are now installed on HL-2A. One is an electromagnetic valve injector on the low field side （LFS）, and the other is a pneumatic valve injector on the high field side （HFS）. A new electron density record nc = 4.7× 10^19 m ^-3 which exceeds both the Oreenwald density limit and the maximum density obtained by gas puffing （GP）, was obtained on HL-2A with single-null-divertor operation. The HFS injection system is still under test, however, its outstanding fueling characteristics have already been observed, e.g. it has higher fueling efficiency compared to the LFS system. This excellent feature is still preserved during the process of ECRH.

关 键 词：HL-2A tokamak SMBI fuelling 

分 类 号：TL61[核科学技术—核技术及应用]