Measurement of neoclassically predicted edge current density at ASDEX Upgrade
Measurement of neoclassically predicted edge current density at ASDEX Upgrade
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DOI：
10.1088/0029-5515/52/12/123014
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发表时间：
2012-12
期刊：
影响因子：
3.3
通讯作者：
M. Dunne;P. McCarthy;E. Wolfrum;R. Fischer;L. Giannone;A. Burckhart
中科院分区：
文献类型：
--
作者：
M. Dunne;P. McCarthy;E. Wolfrum;R. Fischer;L. Giannone;A. Burckhart
实验证实了新古典预测的ELMy H模式等离子体的边缘电流密度。电流密度分析使用CLISTE平衡代码概述和重建的准确性的理由进行了解释。介绍了ASDEX升级数据分析的样本配置文件和时间轨迹。由于使用了ELM同步技术，高时间分辨率是可能的。此外，通量表面平均电流密度使用新古典方法计算。这两种方法的结果进行了比较，并验证了理论公式。最后，几个放电进行了比较，作为燃料的研究的一部分，表明在低场侧的边缘电流密度峰值的大小和宽度可以解释的电子密度和温度驱动器和它们各自的碰撞修改。
Experimental confirmation of neoclassically predicted edge current density in an ELMy H-mode plasma is presented. Current density analysis using the CLISTE equilibrium code is outlined and the rationale for accuracy of the reconstructions is explained. Sample profiles and time traces from analysis of data at ASDEX Upgrade are presented. A high time resolution is possible due to the use of an ELM-synchronization technique. Additionally, the flux-surface-averaged current density is calculated using a neoclassical approach. Results from these two separate methods are then compared and are found to validate the theoretical formula. Finally, several discharges are compared as part of a fuelling study, showing that the size and width of the edge current density peak at the low-field side can be explained by the electron density and temperature drives and their respective collisionality modifications.