電気学会論文誌A(基礎・材料・共通部門誌)
Online ISSN : 1347-5533
Print ISSN : 0385-4205
コンパクトトロイド入射装置の性能とトカマクプラズマへの入射初期実験
福本 直之永田 正義宇山 忠男小川 俊英小川 宏明長谷川 浩一柴田 孝俊木村 晴行
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1999 年 119 巻 11 号 p. 1300-1305

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Compact Toroid (CT) injection is considered to be an advanced deep fueling method in tokamaks. We developed a CT injector to investigate the possibility of refueling and density control of tokamak plasmas by CT injection in the JFT-2M tokamak. The velocity of the CT was controllable from 120km/s to 190km/s in the case of CT density-6×1021m-3 by changing the voltage of the acceleration bank. We demonstrated the CT penetration into the central region of OH plasmas at BT=0.8T. The tokamak electron density increased-0.2×1019m-3 at a rate of 2×1021m-3/s and the fueling efficiency was about 20%. The penetration depth into the tokamak magnetic field was determined by the balance between the CT kinetic energy density and the toroidal magnetic field density.

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