scholarly journals Investigation of the role of electron temperature gradient modes in electron heat transport in TCV plasmas

2019 ◽  
Vol 59 (12) ◽  
pp. 126017 ◽  
Author(s):  
A. Mariani ◽  
P. Mantica ◽  
S. Brunner ◽  
M. Fontana ◽  
A. Karpushov ◽  
...  
2007 ◽  
Vol 73 (2) ◽  
pp. 199-206
Author(s):  
B. LABIT ◽  
M. OTTAVIANI

Abstract.In recent years, much attention has been devoted to the electron-temperature-gradient (ETG) driven instability as a possible explanation for the high electron thermal conductivity found in most tokamaks. The present contribution assesses whether a specific three-dimensional fluid ETG model can reproduce the conductivity observed in the Tore Supra tokamak [Equipe Tore Supra (presented by R. Aymar) 1989 Plasma Physics and Controlled Nuclear Fusion Research (Proc. 12th Int. Conf., Nice, 1988, Vol. 1.) Vienna: IAEA, p. 9]. Although the model reproduces fairly well the observed critical gradient, a large discrepancy factor, of the order of 50, is found for the ratio between the experimental and the simulated conductivity. On the basis of this study, one must conclude that the electron heat transport cannot be explained only with a fluid ETG turbulence model.


2015 ◽  
Vol 22 (5) ◽  
pp. 052301
Author(s):  
Chanho Moon ◽  
Tatsuya Kobayashi ◽  
Kimitaka Itoh ◽  
Rikizo Hatakeyama ◽  
Toshiro Kaneko

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