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

HUANG Xianli (黄贤礼); SHI Zhongbing (石中兵); CUI Zhengying (崔正英); ZHONG Wulv (钟武律); DONG Yunbo (董云波); CHEN Chengyuan (陈程远); FENG Beibin (冯北滨); YAO Lianghua (姚良骅); LIU Zetian (刘泽田); DING Xuantong (丁玄同); et al

doi:10.1088/1009-0630/15/3/06

Plasma Science and Technology > 2013 > 15(3): 221-224. > DOI: 10.1088/1009-0630/15/3/06

HUANG Xianli (黄贤礼), SHI Zhongbing (石中兵), CUI Zhengying (崔正英), ZHONG Wulv (钟武律), DONG Yunbo (董云波), CHEN Chengyuan (陈程远), FENG Beibin (冯北滨), YAO Lianghua (姚良骅), LIU Zetian (刘泽田), DING Xuantong (丁玄同), et al. Heat Transport During H-Mode in the HL-2A Tokamak[J]. Plasma Science and Technology, 2013, 15(3): 221-224. DOI: 10.1088/1009-0630/15/3/06

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

Southwestern Institute of Physics, Chengdu 610041, China

Funds: supported by National Natural Science Foundation of China (Nos. 10975048, 10975049 and 11005037) and the National Magnetic Con¯nement Fusion Science Program of China (Nos. 2010GB102003, 2010GB101003 and 2010GB101004)

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Received Date: January 09, 2012

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Abstract

Abstract

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 profi les 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 \profi ness/resilience" region, similar heat diffusivities have been observed in L-mode and H-mode plasmas, which verifies the gradient-driven transport physics in tokamaks.
- electron heat transport,
- SMBI modulation,
- pedestal

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