Heat Transport During H-Mode in the HL-2A Tokamak  

作　　者：黄贤礼 石中兵 崔正英 钟武律 董云波 陈程远 冯北滨 姚良骅 刘泽田 丁玄同 杨青巍 

机构地区：[1]Southwestern Institute of Physics

出　　处：《Plasma Science and Technology》2013年第3期221-224,共4页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China (Nos. 10975048,10975049 and 11005037);the National Magnetic Confinement Fusion Science Program of China (Nos. 2010GB102003,2010GB101003 and 2010GB101004)

摘　　要：Perturbative experiments on electron heat transport have been successfully con- ducted on the HL-2A tokamak. The pulse propagation of the electron temperature is induced by the supersonic molecular beam injection （SMBI）, which has characteristics of good localization and deep deposition. A model based on the electron heat transport in cylindrical geometry has been applied to reconstruct the measured amplitude and phase profiles of the electron temperature perturbation. The results show that the heat transport is significantly reduced near the pedestal region of the H-mode plasma. In the ＂profile stiffness/resilience＂ region, similar heat diffusivities have been observed in L-mode and H-mode plasmas, which verifies the gradient-driven transport physics in tokamaks.Perturbative experiments on electron heat transport have been successfully con- ducted on the HL-2A tokamak. The pulse propagation of the electron temperature is induced by the supersonic molecular beam injection （SMBI）, which has characteristics of good localization and deep deposition. A model based on the electron heat transport in cylindrical geometry has been applied to reconstruct the measured amplitude and phase profiles of the electron temperature perturbation. The results show that the heat transport is significantly reduced near the pedestal region of the H-mode plasma. In the ＂profile stiffness/resilience＂ region, similar heat diffusivities have been observed in L-mode and H-mode plasmas, which verifies the gradient-driven transport physics in tokamaks.

关 键 词：electron heat transport SMBI modulation PEDESTAL 

分 类 号：TL631.24[核科学技术—核技术及应用] TL612.1