A Study of Reversed Field Pinch Experiment in a Small Compact Torus STP-1
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概要
- 論文の詳細を見る
MHD instabilities which destroy a stable reversed field pinch (RFP) plasma areinvestigated in a small tight aspect ratio torus, STP-1. Special atte:ntion is paidon programing of setting up the RFP configuration. It starts with scz'ew pinch andthen external fields is reversed while the plasma current is kept incre;?sing in orderto maintain equilibrium relation with respect to minor radius oj ' the plasma.Consequently plasma-wall interaction during RFP setting up phase is minimizedand increased trapped toroidal flux by factor two is achieved compared with usualprograming mode. In this way a stable RFP plasma is created with density of3.5 X 10"/cm', temperature of 20 eV and discharge current of 58 kA. After 13psec stable operation time, the plasma is rapidly deformed and moves from itsequilibrium position by a violent MUD m=1 instability, of which :structures areobserved by B, magnetic probes. A theoretical calculation of one dimensionalstability analysis based on ideal MIND model is applied to our experimentalresults. It is found that the instability may be m=1 resistive tearinzg mode underthe influence of viscosity.
- 社団法人日本物理学会の論文
- 1980-05-15
著者
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HIRANO Kei-ichi
Institute of Plasma Physics, Nagoya University
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Kita Yoshio
Institute Of Plasma Physics Nagoya University
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Hirano Kei-ichi
Institute Of Plasma Physics Nagoya University
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