1998年1月
Partially relaxed magnetohydrodynamic equilibria with bias-flux leakage obtained in a helicity-driven spheromak
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
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- 巻
- 67
- 号
- 1
- 開始ページ
- 140
- 終了ページ
- 146
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- 出版者・発行元
- PHYSICAL SOC JAPAN
In the flux amplification compact torus experiment, the bias flux penetrates the wall of the flux conserver because it has been switched on a suitably long time prior to the production of a seed spheromak. The magnetohydrodynamic equilibrium configurations with a non-constant lambda(= mu(0)j.B/\B\(2)) profile of a helicity-driven spheromak incorporating the situation of the bias-flux leakage out of the flux conserver are numerically determined by using the novel combination of the finite difference and the boundary element method. Here mu(0), j and B are the permeability of vacuum. the current density and the magnetic field, respectively. The results of computations show that the effects of the bias-flux leakage cause a slight rise of the entire safety factor q in the case of I-C/I-P = 0.4 (I-C and I-P denote the total current of coil and plasma, respectively) because of the decrease in poloidal field over all space. Then, they also give rise to a 22.0% decrease in the magnetic flux inside the separatrix.
- リンク情報
- ID情報
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- ISSN : 0031-9015
- Web of Science ID : WOS:000071769300032