Neoclassical transport studies in TJ-II stellarator using Pretor code.
J. Garcia1), K.Yamazaki2), J. Dies1), H.Funaba2), T.Amano2), J.Fontanet1), J.M. Fontdecaba1), F.Albajar1), J.Izquierdo1)
1) Fusion Energy Engineering Laboratory (FEEL),Departament de Fisica i Enginyeria Nuclear, ETSEIB, Universitat Politècnica de Catalunya (UPC), Barcelona (Spain)
The TJ-II flexible heliac started its operation in the CIEMAT (Madrid) at the end of 1997 [1]. Plasmas in first experimental campaigns have attained a highest temperature of 1 keV and an average density of 1.2 1019 m-3 in shots up to 300 ms. Nowadays, temperatures of 1.5 keV are reached and the electron density is increased up to the cut-off. The plasma stored energy is about 1.2 kJ.
References
[1] C. Alejaldre, et. al. "First plasmas in the TJ-II flexible heliac" Plasma Physics and Controlled Fusion 41, March 1999
[2] J. Fontanet. "Simulation of magnetic confinement fusion plasmas of tokamak and stellarator devices. Experimental validation and application to the study of the Heliac Flexible TJ-II" Thesis, Universitat Politecnica de Catalunya, March 2001 [3] V.Tribaldos "Monte Carlo estimation of neoclassical transport for the TJ-II stellarator" Physics of Plasmas 8, April 2001
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