HT-7托卡马克大功率低混杂波电流驱动的实验研究  

Experimental study of large power lower hybrid current drive on HT-7 tokamak

作　　者：徐强[1] 高翔[1] 单家方[1] 胡立群[1] 赵君煜[1] 

机构地区：[1]中国科学院等离子体物理研究所,合肥230031

出　　处：《物理学报》2009年第12期8448-8453,共6页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10475078;10675127;10675126;10675124;10605028)资助的课题~~

摘　　要：在HT-7超导托卡马克成功进行了大功率(PLHW=100—800kW,f=2.45GHz)低混杂波电流驱动实验.研究了不同入射功率和等离子体密度下的低混杂波电流驱动效率.获得了以平均电子密度增加、氘阿尔法(Dα)线辐射减少为特征的粒子约束改善;粒子约束时间τp增加了约1.5倍.仔细研究了能量约束时间与等离子体密度和低混杂波功率的关系.Large power current drive of lower hybrid wave（LHW） was performed（PLHW 100-800 kW at 2.45 GHz） recently in the HT-7 tokamak. The lower hybrid current drive（LHCD） efficiency is studied for different injected powers and for different densities. Improved particle confinement is observed by application of LHCD as characterized by an increase of central line average electron density and decrease of Dα emission. The particle confinement time τp increased about 1.5 times compared with ohm discharge. The dependence of energy confinement time τE on plasma density and LHW power is experimentally studied in detail.

关 键 词：托卡马克 低混杂波 约束改善 电流驱动效率 

分 类 号：TL631.24[核科学技术—核技术及应用] TD528[矿业工程—矿山机电]