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Recent HL-1M Experiment Progress

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中国核科技报告 1999年第S3期 11-16页

作者： wang enyao (HL-1M Team)

In 1993 and 1994, HL-1 was modified to HL-1M by replacing the vacuum chamber. HL-1M is a circular cross-section Tokamak with R=1.02 m, α=0.26 m. The goal of the HL-1M programme is to conduct high power auxiliary heating (NBI power of～1 MW, ICRH power of～1 MW, ECRH power of 0.5 MW) and current drive (LHCD power of>1 MW) experiments in order to develop the physics and technology basis for the next Tokamak, HL-2A, which is a modifica

关键词： Plasma performance LHCD NBI

The Plasma Edge Velocity and Electrical Field Measurements Under LHCD and ECRH on HL-1M Tokamak

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中国核科技报告 1999年第S3期 3-5页

作者： HONG Wenyu LI Qiang wang enyao

The global energy confinement is sensitive to the plasma edge conditions in fusion devices. The L-H mode transition is closely related to the edge radial electrical field E, gradient of Eand poloidal rotation velocity, etc. The edge plasma radial transport is also related to the changes of the poloidal electrical field E. The relations between the plasma confinement and E, E, dE/dr and their fluctuations are studied with the measurements of radial distributions and changes for both the edge plasma flow velocity and the electrical field on HL-1M Tokamak.

关键词： Poloidal velocity Radial electrical field Poloidal electrical field

Edge Plasma Performance of Lower Hybrid Wave Injection on the HL-1M Tokamak

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中国核科技报告 2002年 892-895页

作者： HONG Wenyu wang enyao GAO Jianyong LI Qiang

Recently, the L-mode to H-mode (L-H) transition in tokamak plasma confinement was found to be related to the presence of the poloidal flow shear near the plasma edge. An important mechanism is the ion orbit loss cause... 详细信息

关键词： Reynolds stresses Poloidal flow velocity Radial and poloidal electric field

Role of Advanced Refueling and Heating on Edge Reynolds Stress-induced Poloidal Flow in the HL-1M Tokamak

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中国核科技报告 2002年 889-892页

作者： HONG Wenyu wang enyao GAO Jianyong LI Qiang

The plasma confinement is sensitive to the edge conditions. Generally, edge parameters such as the edge density, temperature, Reynolds stress, poloidal flow velocity, radial and poloidal electric field are measured by... 详细信息

关键词： Reynolds stresses Poloidal flow velocity Radial and poloidal electric field

Investigation of Edge Plasma Feature in HL-1M Tokamak

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中国核科技报告 1999年第S3期 3-5页

作者： YAN Longwen HONGWenyu QIAN YANG Shikun wang enyao

The simultaneous control of edge and core plasma is very significant to optimize Tokamak operation. Langmuir electrostatic probes are used to measure edge plasma parameters, such as electron temperature, density and s... 详细信息

关键词： Edge plasma Particle confinement

Measurement of Edge Parameters with ICRF in HL-1M Tokamak

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中国核科技报告 1998年第S5期 3-5页

作者： YAN Longwen YANG Shikun QIAN Jun wang enyao

One of significant tasks in Tokamak plasmas is to understand the physics with high temperature and density. Therefore, the auxiliary heated experiments with ion cyclotron radio-frequency (ICRF) and neutral beam inject... 详细信息

关键词： Langmuir probe Edge plasma ICRF Pellet injection

Compound Sawteeth:Diagnostic of Reversed Shear in HL-1M

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中国核科技报告 1999年第S3期 3-5页

作者： GUO Gancheng FU Bingzhong ZHONG Yueze LIU Yi DING Xuantong wang enyao

The magnetic configuration of the plasma core can be qualitatively determined by the sawtooth behavior under specific conditions due to the sawtooth characteristics may be significantly affected by localized changes of plasma parameters, particularly current and temperature profiles. The single sawtooth can be substituted by compound sawtooth when the current profile become to hollow form, i. e. two q=1 surfaces exist in the plasma core region due to modification of particular plasma condition. Because the current profile maintains the characteristic peaked shape in

关键词： Compound sawteeth Reversed magnetic shear Current density profile

Peaking Behaviors of Electron Density Profile in the HL-1M Tokamak Discharge

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中国核科技报告 1998年第S5期 3-5页

作者： DENG Zhongchao ZHOU Yan FU Huiwen LIU Zhetian DIAO Guangyao wang enyao

At present in the wold a number of discharge conditions in Tokamak have been identified which lead to peaking of the n(r)profile. The transition can be induced by pellet fuelling or counter-injection of neutral beam and some physicists have also discovered that the transition caused density profile peaking can be provoked by a sudden

关键词： Density profile Peaking Confinement

The Study of Fueling Method and Particle Confinement Improvement

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Southwestern Institute of Physics Annual Report

Southwestern Institute of Physics Annual Report 2004年第1期 14-16页

作者： ZHOU Yan DENG Zhongchao YAO Lianghua XIAO Zhenggui DING Xuantong LIU Yong wang enyao

Several high performance tokamak operation regimes have been achieved experimentally in the experiments with the peaked density profiles. The regimes include the improved Ohmic confinement in ASDEX, the pellet enhanced performance mode in Alcator-C, and the super-shot mode in TFTR. In these regimes, peaked core density profiles are always existent, and almost always go with the internal transport barriers, these barriers generally produced by sheared radial electric field. In addition to enhance confinement, the peaked density profile is also needed for the optimized fusion reaction rate and alpha heating power in tokamak plasma, and combined peaked density profile and peaked temperature profile, would make the ignition condition easy obtained. It is desirable to seek and analyze the density profile control schemes that effectively lead to density profile peaking in particle transports experimental investigation.

关键词： Particle confinement Density profile behavior Fueling method