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JET experiments with 120 keV 3He and 4He neutral beam injection and neutron diagnostic applications

F B Marcus, J M Adams, D V Bartlett, V Bhatnagar, A J Bickley, M Bures, D J Campbell, C D Challis, J Christiansen, S Conroy1992年Plasma Physics and Controlled FusionIF 2.2出版社

Preliminary experiments were carried out in the Joint European Torus (JET) using 120 keV helium (He) neutral beam injection (NBI). Injected power levels up to 5 MW with 3He and 7 MW with 4He, lasting up to 3 s were reached. The 3 s helium NBI produced efficient ion heating and similar global and local energy confinements to those obtained with deuterium (D) NBI, in both limiter and X-point plasma geometries, in L-mode and H-mode plasma regimes. The elimination of beam-plasma and beam-beam fusion reactions by replacing D NBI with He NBI extended the range for measuring ion temperatures with the JET neutron profile monitor and neutron spectrometers.

日本語訳

予備実験が、共同欧州トーラス(JET)において、120 keVのヘリウム(He)中性粒子ビーム入射(NBI)を用いて実施された。3Heによる最大5 MW、4Heによる最大7 MWの入射電力が、最大3秒間達成された。3秒間のヘリウムNBIは、リミター配位およびX点配位の両方において、LモードおよびHモードの両方のプラズマ領域で、重水素(D)NBIによって得られたものと同様の効率的なイオン加熱と、同様の全体および局所エネルギー閉じ込めを実現した。D NBIをHe NBIに置き換えることによるビーム-プラズマおよびビーム-ビーム核融合反応の排除により、JET中性子モニターおよび中性子スペクトロメーターを用いたイオン温度測定の範囲が拡張された。

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JETPlasma diagnosticsNeutral beamNeutral beam injection
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