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Three Dimensional Identification of Zonal Flows in the HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2006年第1期 15-16页

作者： YAN Longwen HONG Wenyu LAN Tao ZHAO Kaijun DONG Jiaqi LIU Adi YU Changxuan QIAN Jun CHENG Jun YU Deliang YANG Qingwei DING Xuantong LIU Yong PAN Chuanhong 不详 Laboratory of Basic Plasma Physics University of Science and Technology of China Hefei China

1 Introduction Zonal flows （ZF） have been studied in some fusion devices. For example, geodesic acoustic mode （GAM） is observed with the frequency of fGAM - 15 kHz, poloidal mode number （m〈3） and radial wave n... 详细信息

关键词：带状流体 HL-2A 受控热核反应装置核能

Investigation of Impurity Ion Transport with Laser Blow-off in HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2006年第1期 32-33页

作者： CUI Zhengying HUANG Yuan SUN Ping ZHENG Yongzhen SHI Peilan LU Jie FU Bingzhong ZHANG Peng PAN Yudong DONG Yunbo DENG Wei YANG Qingwei DING Xuantong

Transient perturbation methods are most appropriate to study particle transport in tokamaks. Two most commonly used techniques of impurity injection are laser blow-off and gas puffing. The laser blow-off injection technique is undoubtedly the best one to study impurity transport because the injection time and the alnount of injected material can be controlled in a certain phase of the discharge with a minimum perturbation of the plasma parameters. The information of the impurity transport is obtained from the detection of emission of injected impurity ions located in different spatial regions. The radiation includes line emission, soft X-ray emission and plasma global radiation.

关键词：激光器离子 HL-2A 受控热核反应装置

The Pellet Enhanced Performance on the HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2006年第1期 23-24页

作者： DING Xuantong YANG Qingwei YAN Longwen ZHU Genliang CAO Zeng XIAO Zhenggui GAO Qingdi LONG Yongxing LIU Dequan LIU Yi ZHOU Yan PAN Yudong CUI Zhengying HUANG Yuan LIU Zetian SHI Zhongbing JI Xiaoquan XIAO Weiwen LIU Yong

Improved confinement during the fuelling is one of the most important subjects for the tokamak research. Experiments have confirmed that anomalous transport is caused by turbulences driven by temperature and density gradient in plasma. Pellet injection is not only an important fuelling method, but also is an efficient tool for controlling the plasma pressure and current profile. The improved energy confinement has been observed in many tokamaks with center pellet injection since 1980＇s.

关键词： HL-2A 受控热核反应装置原子核核反应

New Diagnostic Systems on HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2006年第1期 20-22页

作者： DING Xuantong ZHOU Yan DENG Zhongchao XIAO Weiwen LIU Zetian SHI Zhongbing YAN Longwen HONG Wenyu YANG Qingwei

1 Introduction HL-2A is a middle size （ R= 1.65 m, α=0.40 m） tokamak with a closed divertor. The main subjects are investigation of the divertor and edge plasma physics, plasma transport and its mechanism, plasma profile control with auxiliary heating and so on. A great number of diagnostics have been designed and equipped on the device. Among them three new diagnostics have been developed for particle transport, the zonal flow and density profile.

关键词： HL-2A 诊断系统受控热核反应装置核反应堆

Siliconization for Wall Conditioning and Its Effect on Plasma Performance in HL-2A Tokamak

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Southwestern Institute of Physics Annual Report 2006年第1期 30-31页

作者： DUAN Xuru CAO Zeng CUI Chenghe CAI Xiao SUN Hongjuan DING Xuantong PAN Yudong WANG Mingxu YANG Qingwei SONG Xianming LIU Dequan LIU Yi JI Xiaoquan CUI Zhengying ZHOU Yan LIU Yong 无不详 HL-2A Team

1 Experiments HL-2A tokamak is characterized by a large closed divertor chamber. Before the experimental campaign 2005 the surface of the shielding plates for the MP1 and MP2 has been covered with 2-D carbon fibre composite （about 30% of the first wall）, which can protect the first wall, and effectively shield the splash of heavy metal impurity. The vacuum vessel can be baked up to 120 ℃for degassing and a glow discharge device is installed in the vessel for cleaning the inner surface. Hydrogen glow discharge cleaning （GDC） is applied to remove impurities from the wall, and helium glow discharge cleaning for removing residual hydrogen.

关键词：硅化等离子体 HL-2A 受控热核反应装置