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Neutral particle analysis of ICRF heated discharges on Alcator C-Mod

W D Lee, R L Boivin, P T Bonoli, C L Fiore, A Hubbard, J Irby, E Nelson-Melby, M Porkolab, S J Wukitch2003年Plasma Physics and Controlled FusionIF 2.2出版社

A neutral particle analyser (NPA) has been used to make measurements of the ion distribution in the Alcator C-Mod tokamak. We have used the analyser to measure the energy distribution of majority deuterons and minority hydrogen (up to 20 keV) at 0.4⩽r/a⩽0.6, during minority ion cyclotron range of frequencies (ICRF) heating. These energy spectra were also simulated by using the predicted minority ion distribution from a combined Fokker Planck ICRF code in a model for the neutral particle flux. The model predictions for neutral flux were found to be in qualitative agreement with the measured energy spectra. The energy spectra for two different ICRF antenna configurations were also measured and found to be very similar.

日本語訳

中性粒子分析装置(NPA)を用いて、Alcator C-Modトカマクにおけるイオン分布の測定を行った。我々はこの分析装置を用いて、ICRF加熱中における主要イオン(重水素)および少数イオン(水素)のエネルギー分布を、0.4⩽r/a⩽0.6の範囲で最大20 keVまで測定した。これらのエネルギースペクトルはまた、結合されたフォッカー・プランクICRFコードから予測された少数イオン分布を用いて、中性粒子フラックスのモデルによりシミュレーションを行った。モデルによる中性粒子フラックスの予測は、測定されたエネルギースペクトルと定性的に一致することが確認された。さらに、2種類の異なるICRFアンテナ配置におけるエネルギースペクトルも測定され、それらが非常に類似していることが明らかになった。

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alcator-c-mod高精度(タイトル一致)

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Ion cyclotron heatingAlcatorC-Mod
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