HL-2A装置上超声分子束注入触发L-H转换的实验研究  

Experimental study of L-H transition triggered by supersonic molecular beam injection in the HL-2A tokamak

作　　者：冯北滨[1] 姚良骅[1] 陈程远[1] 季小全[1] 钟武律[1] 石中兵[1] 余德良[1] 崔正英[1] 宋显明[1] 段旭如[1] 

机构地区：[1]核工业西南物理研究院聚变科学所,成都610041

出　　处：《物理学报》2013年第1期251-257,共7页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:10975049);国家科技重大专项(批准号:2009GB104007;2010GB102003)资助的课题~~

摘　　要：利用具有定向速度的超声分子束注入技术,研究了HL-2A装置在较低加热功率条件下实现L-H转换的等离子体放电特征,从边缘密度分布的差异比较分析了普通送气和超声分子束注入对L-H转换的影响.实验结果表明,HL-2A装置上采用超声分子束注入可直接触发L-H转换,明显降低L-H转换功率.通过对大量实验数据的分析和整理发现,利用超声分子束注入实现L-H转换的最低加热功率,比同等条件下采用普通送气实现L-H转换的最低加热功率减少约10%.Features of L-H transition are investigated using the supersonic molecular beam injection （SMBI） with directional velocity under low heating powers in the present paper. Comparing the edge density profiles, it is analyzed that the conventional gas puffing （GP） and SMBI have effects on L-H transition. Experimental results suggest that the SMBI does directly trigger L-H transition on HL-2A, and it considerably reduces the power threshold of L-H transition. After abundant experimental data are analyzed and processed, it is found that the minimum L-H transition power with SMBI decreases by 10% when it is compared with GP trigged H-mode under same conditions.

关 键 词：托卡马克 L-H转换 超声分子束注入 

分 类 号：TL631.24[核科学技术—核技术及应用]