Dynamic modelling of lower hybrid current drive
Dynamic modelling of lower hybrid current drive
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DOI：
10.1088/0029-5515/34/6/i07
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发表时间：
1994-06
期刊：
影响因子：
3.3
通讯作者：
D. Ignat;E. Valeo;S. Jardin
中科院分区：
文献类型：
--
作者：
D. Ignat;E. Valeo;S. Jardin
本文提出了一种低杂波电流驱动的动态计算模型，并给出了计算结果。几何形状，等离子体轮廓和电路方程的细节进行了仔细的处理。二维速度空间效应近似于一维Fokker-Planck处理。该模型是无法近似的实验结果，在某些情况下，其特征在于低密度，低电流，高纵横比和发射光谱在高相速度相对于热速度。在其他情况下，与测量定性协议被发现。一个简单的公式已经在文献中出现，以确定是否符合模型和实验将是好还是坏。应用于q（0）提高到1以上的实验放电，显示了适当的时间尺度。对高beta的计划工作量的计算表明可能成功
A dynamic computational model of lower hybrid current drive in the presence of an electric field is described and some results are given. Details of geometry, plasma profiles and circuit equations are treated carefully. Two dimensional velocity space effects are approximated in a one dimensional Fokker-Planck treatment. The model is unable to approximate experimental results in some cases characterized by low density, low current, high aspect ratio and a launched spectrum at high phase velocity relative to the thermal velocity. In other cases, qualitative agreement with measurements is found. A simple formula already in the literature appears to determine whether agreement of model and experiment will be good or poor. Application to an experimental discharge in which q(0) is raised above unity shows an appropriate time-scale. Computation of a planned effort for high beta suggests potential success