电子回旋加热条件下的托卡马克等离子体输运研究

项目名称： 电子回旋加热条件下的托卡马克等离子体输运研究

项目编号： No.11305051

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 宋绍栋

作者单位： 核工业西南物理研究院

项目金额： 28万元

中文摘要： 本项目拟以在HL-2A装置上建成的3MW/68GHz和2MW/140GHz ECRH系统为基础，开展ECRH条件下的输运实验研究，主要研究两个方面：一、热对流项的存在条件以及决定因素；二、粒子pump out现象产生的机制和抑制方法。热对流项的存在及其大小，影响热输运的正确表达，且在ITB存在的条件下，热对流项是能量传递的重要方式。本项目将开展离轴ECRH，探测热对流项对不同条件的依赖关系。粒子pump out效应具有降低密度峰化和排除杂质的双重作用，如何有效控制pump out效应，是本项目致力于解决的另一个难题。本项目将通过微波多普勒反射仪测量芯部湍流，以及通过对剖面进行湍流模拟分析，确定热对流和pump out效应产生的机制。

中文关键词： 热输运；粒子输运；电子回旋共振加热；；

英文摘要： This program is mainly to carry out transport experiments with the newly established 3MW/68GHz and 2MW/140GHz ECRH system in HL-2A tokamak. It will be focused on the existence of the heat pinch term and also its relation to relevant physical quantities, and also focused on the regime of the particle pump out effect during ECRH experiments. With 8 gyrotrons working separately, continuous and modulation at different power levels can be carried out for the steady-state and perturbation transport study. The program will help to improve the heating efficiency of ECRH and also the analyses on the pioneer subjects such as pump out effect. Off-axis ECRH experiments will be carried out to detect heat pinch term ,so as to obtain its dependence on the enviromental parameters. The pump out effect helps to decrease the density peaking factor and reduce the central accumulation of impurities. How to control the pump out effect of ECRH is the second subject to be focused on. Central turbulence will be measured by microwave Doppler reflectometry, and simulated by turbulent codes, so that the scheme of heat pinch and pump out effect can be understood furthermore.

英文关键词： heat transport；particle transport；ECRH；；