Radial electric field measurement in a tokamak with magnetic field ripple
Radial electric field measurement in a tokamak with magnetic field ripple
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DOI：
10.1088/0029-5515/48/9/092001
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发表时间：
2008-09
期刊：
影响因子：
3.3
通讯作者：
E. Trier;L. Eriksson;P. Hennequin;C. Fenzi;C. Bourdelle;G. Falchetto;X. Garbet;T. Aniel;F. Clairet;R. Sabot
中科院分区：
文献类型：
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作者：
E. Trier;L. Eriksson;P. Hennequin;C. Fenzi;C. Bourdelle;G. Falchetto;X. Garbet;T. Aniel;F. Clairet;R. Sabot
在具有显著涟漪的Tore Supra托卡马克的区域中，预期径向电场（Er）确保涟漪威尔斯中捕获的热粒子通量的双极性。新古典计算（康纳和Hastie 1973 Nucl. Fusion 13 221，Stringer 1972 Nucl. Fusion 12 689）表明Er与离子温度和密度梯度有关。这个关系的有效性进行了研究，在一系列的Tore Supra L-模式放电没有外部动量输入。多普勒反射仪测量的垂直速度波动，这是占主导地位的Er × B漂移，被发现与预测的新经典Er。
In the regions of the Tore Supra tokamak with significant ripple it is expected that a radial electric field (Er) ensures the ambipolarity of fluxes of thermal particles trapped in ripple wells. A neoclassical calculation (Connor and Hastie 1973 Nucl. Fusion 13 221, Stringer 1972 Nucl. Fusion 12 689) shows that Er is related to ion temperature and density gradients. The validity of this relation is investigated in a series of Tore Supra L-mode discharges without external momentum input. Doppler reflectometry measurements of fluctuations perpendicular velocity, which is dominated by the Er × B drift, are found to be in good agreement with the predicted neoclassical Er.