Title of article
Eddy current-adjusted plasma shape reconstruction by Cauchy condition surface method on QUEST
Author/Authors
Nakamura، نويسنده , , K. and Jiang، نويسنده , , Y. and Liu، نويسنده , , X.L. and Mitarai، نويسنده , , O. and Kurihara، نويسنده , , K. and Kawamata، نويسنده , , Y. and Sueoka، نويسنده , , M. and Hasegawa، نويسنده , , M. and Tokunaga، نويسنده , , K. and Zushi، نويسنده , , H. and Hanada، نويسنده , , K. and Fujisawa، نويسنده , , Anatoly A. and Sakamoto، نويسنده , , M. and Idei، نويسنده , , H. and Kawasaki، نويسنده , , S. and Nakashima، نويسنده , , H. and ، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2011
Pages
5
From page
1080
To page
1084
Abstract
CCS (Cauchy Condition Surface) method is a numerical approach to reproduce plasma shape, which has good precision in conventional tokamaks. In order to apply it in plasma shape reproduction of ST (Spherical Tokamak), the calculation precision of the CCS method in a spherical tokamak CPD (Compact PWI experimental Device) (Bt = 0.25 T, R = 0.3 m, a = 0.2 m) has been analyzed. The precision was confirmed also in ST and decided to be applied to a spherical tokamak QUEST (Bt = 0.25 T, R = 0.68 m, a = 0.40 m).. In present stage from the magnetic measurement, it is known that the eddy current effect is large in QUEST experiment, and there are no special magnetic measurements for eddy current now, so some proper model should be selected to evaluate the eddy current effect. The eddy current density by not only CS (Center Solenoid) coil but also plasma current is calculated using EDDYCAL (JAEA). The eddy current magnitudes are taken as unknown variables and solved together with plasma shape reconstruction in ohmic discharge and ECCD (Electron Cyclotron Current Drive) discharge.
Keywords
Eddy current , CCS , Quest
Journal title
Fusion Engineering and Design
Serial Year
2011
Journal title
Fusion Engineering and Design
Record number
2357980
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