Electron heat transport comparison in the large helical device and TJ-II

被引：5
|
作者：
Garcia, J.
Dies, J.
Castejon, F.
Yamazaki, K.
机构：
[1] UPC, ETSEIB, Dept Fis & Engn Nucl, FEEL, Barcelona, Spain
[2] EURATOM, CIEMAT, Ctr Investigac Energet, Lab Nacl Fus, Madrid, Spain
[3] Nagoya Univ, Chikusa Ku, Nagoya, Aichi 4648603, Japan
来源：
PHYSICS OF PLASMAS | 2007年 / 14卷 / 10期
关键词：
D O I：
10.1063/1.2779280
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The electron heat transport in the Large Helical Device (LHD) [K. Ida, T. Shimozuma, H. Funaba et al., Phys. Rev. Lett. 91, 085003 (2003)] and TJ-II [F. Castejon, V. Tribaldos, I. Garcia-Cortes, E. de la Luna, J. Herranz, I. Pastor, T. Estrada, and TJ-II Team, Nucl. Fusion 42, 271 (2002)] is analyzed by means of the TOTAL [K. Yamazaki and T. Amano, Nucl. Fusion 32, 4 (1992)] and PRETOR-Stellarator [J. Dies, F. Castejon, J. M. Fontdecaba, J. Fontanet, J. Izquierdo, G. Cortes, and C. Alejaldre, Proceedings of the 29th European Physical Society Conference on Plasma Physics and Controlled Fusion, Montreux, 2002, Europhysics Conference Abstracts, 2004, Vol. 26B, P-5.027] plasma simulation codes and assuming a global transport model mixing GyroBohm-like drift wave model and other drift wave model with shorter wavelength. The stabilization of the GyroBohm-like model by the E x B shear has been also taken into account. Results show how such kind of electron heat transport can simulate experimental evidence in both devices, leading to the electron internal transport barrier (eITB) formation in the LHD and to the so-called "enhanced heat confinement regimes" in TJ-II when electron density is low enough. Therefore, two sources for the anomalous electron heat transport can coexist in plasmas with eITB; however, for each device the relative importance of anomalous and neoclassical transport can be different. (C) 2007 American Institute of Physics.
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页数：10
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