Edge cooling experiments and non-local transport phenomena in Tore Supra
Edge cooling experiments and non-local transport phenomena in Tore Supra
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DOI：
10.1088/0741-3335/42/10/305
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发表时间：
2000-10
影响因子：
2.2
通讯作者：
X. Zou;A. Géraud;P. Gomez;M. Mattioli;J. Ségui;F. Clairet;C. Michelis;P. Devynck;T. D. D. Wit-T.-D.-D.
中科院分区：
文献类型：
--
作者：
X. Zou;A. Géraud;P. Gomez;M. Mattioli;J. Ségui;F. Clairet;C. Michelis;P. Devynck;T. D. D. Wit-T.-D.-D.
在Tore Supra中进行了杂质注入和斜球团注入的边缘冷却实验。非局部输运（NLT）的特征已被证实在这两种情况下的欧姆制度。颗粒注入实验表明，等离子体密度ne和电流Ip存在一个阈值：ne/Ip1/2?1.0?1016?（m-3? a -1/2）。还观察到由颗粒注入引起的相对密度变化的第二个阈值：？ne/ ?0.5。观察到，在低混合电流驱动（LHCD）实验的L区，这些极限被扩展：[ne/Ip1/2]临界值= 1.4?1016?（m-3?）A-1/2)和[?ne/ne]crit?0.65。在具有完全无感等离子体电流的LHCD方案中的观测似乎表明，控制NLT的机制不太可能与等离子体电流分布效应有关，包括空间再分布、磁剪切和低m MHD模式。
Edge cooling experiments have been performed in Tore Supra by impurity injection and oblique pellet injection. Non-local transport (NLT) features have been confirmed in both cases in the ohmic regime. The pellet injection experiments have shown the existence of a threshold on the plasma density ne and current Ip for the observation of this effect: ne/Ip1/2?1.0?1016?(m-3?A-1/2). A second threshold on the relative density variation caused by the pellet injection has also been observed: ?ne/ne?0.5. It has been observed that in the L regime during lower hybrid current drive (LHCD) experiments these limits are extended: [ne/Ip1/2]crit = 1.4?1016?(m-3?A-1/2) and [?ne/ne]crit?0.65. Observations in a LHCD scheme with fully non-inductive plasma current seem to indicate that the mechanism governing the NLT is unlikely to be linked to the plasma current profile effects including the spatial redistribution, the magnetic shear, and the low-m MHD modes.