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Flux and particle life-time measurements in field-reversed configurations

J.T. Slough, A.L. Hoffman, R.D. Milroy, D.G. Harding, Loren C. Steinhauer1984年被引用 57Nuclear FusionIF 3出版社

Flux and particle life-times of field-reversed configurations (FRC) have been measured in the TRX-1 field-reversed theta pinch. These measurements have been correlated with detailed numerical transport calculations based on classical and lower-hybrid-drift (LHD) resistivity. The data appear to imply spatially uniform resistivity profiles with a magnitude somewhat lower than that given by the wave energy bound of LHD fluctuations. Using a programmed formation technique it has been possible to form FRCs with large amounts of poloidal flux, and thus large separatrix radii. The particle confinement time has been found to scale approximately linearly with the amount of poloidal flux, and 150 μs particle confinement times have been achieved in 3 X 1015 cm−3 density FRCs with separatrix radii of only 7 cm. The linear scaling with poloidal flux is highly encouraging for scaling to higher-field, larger-size devices.

日本語訳

磁場反転配位(FRC)のフラックスおよび粒子寿命が、TRX-1磁場反転シータピンチにおいて測定された。これらの測定結果は、古典抵抗率および低混成ドリフト(LHD)抵抗率に基づく詳細な数値輸送計算と関連付けられた。データは、LHD揺動の波動エネルギー限界によって与えられる値よりもやや低い大きさの、空間的に一様な抵抗率分布を示唆しているように思われる。プログラム形成法を用いることにより、多量のポロイダルフラックス、ひいては大きなセパラトリックス半径を持つFRCを形成することが可能となった。粒子閉じ込め時間は、ポロイダルフラックスの量にほぼ線形に比例することが見出され、セパラトリックス半径がわずか7 cmの3×10¹⁵ cm⁻³密度のFRCにおいて、150 μsの粒子閉じ込め時間が達成された。ポロイダルフラックスに対する線形スケーリングは、より高磁場・大型装置へのスケーリングにとって極めて有望である。

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lhd中精度(概要文一致)

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Field-Reversed Configuration
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