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Giruzzi, G.*; Garcia, J.*; 林 伸彦; Schneider, M.*; Artaud, J. F.*; Baruzzo, M.*; Bolzonella, T.*; Farina, D.*; Figini, L.*; 藤田 隆明; et al.
Proceedings of 24th IAEA Fusion Energy Conference (FEC 2012) (CD-ROM), 8 Pages, 2013/03
A coordinated Japan-EU modelling activity has started in order to provide predictive simulations of the main JT-60SA scenarios. The first results of this activity are discussed in this paper. This includes: (1) the critical comparison and benchmark of Japanese and EU H and CD codes, in particular of NBI codes for the complex injector configuration of the JT-60SA machine; (2) the validation of the main models and simulation framework used in both Japanese and EU integrated modelling suites of codes, based on selected reference discharges of JT-60U and JET, representing the main scenarios (H-mode, hybrid, advanced); (3) predictive modelling of JT-60SA scenario, using the 0.5-D code METIS.
武智 学; Bolzonella, T.*; Baruzzo, M.*; 井手 俊介; 松永 剛; JT-60SAチーム
Europhysics Conference Abstracts (Internet), 34A, p.P2.192_1 - P2.192_4, 2010/00
To achieve a steady-state high beta plasma, suppression of RWM is necessary. Therefore, the RWM active control system for JT-60SA is being designed. The matter of mode-rigidity is very important for JT-60SA, because the coverage area of plasma surface with coils is very small. There are two issues connected to mode non-rigidity. One is mode deformation and the other is the destabilization of side-band modes which are marginally stable without the control coils. We performed some experiments on the RFX-mod device with reduced sets of coils for mode-rigidity study. The active control system of RFX-mod has 192 coils each with an independent amplifier and successfully controls RWMs. For example, by using only 48 coils in the top poloidal section one can control the RWM. The dependence of mode control efficiency, mode deformation derived by magnetic sensors and amplifier current on coverage area of the coils during mode control will be shown.
