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Benchmark and combined velocity-space tomography of fast-ion D-alpha spectroscopy and collective Thomson scattering measurements

A S Jacobsen, M Salewski, B Geiger, S B Korsholm, F Leipold, S K Nielsen, J Rasmussen, M Stejner, M Weiland, the ASDEX Upgrade team2016年Plasma Physics and Controlled FusionIF 2.2出版社

We demonstrate the combination of fast-ion D-alpha spectroscopy (FIDA) and collective Thomson scattering (CTS) measurements to determine a common best estimate of the fast-ion velocity distribution function by velocity-space tomography. We further demonstrate a benchmark of FIDA tomography and CTS measurements without using a numerical simulation as common reference. Combined velocity-space tomographies from FIDA and CTS measurements confirm that sawtooth crashes reduce the fast-ion phase-space densities in the plasma center and affect ions with pitches close to one more strongly than those with pitches close to zero.

日本語訳

我々は、高速イオンDα分光法(FIDA)と集団散乱(CTS)測定の組み合わせを実証し、速度空間トモグラフィーによる高速イオン速度分布関数の共通の最良推定値を決定する。さらに、数値シミュレーションを共通の参照として用いることなく、FIDAトモグラフィーとCTS測定のベンチマークを実証する。FIDAとCTSからの複合速度空間トモグラフィーは、鋸歯状波クラッシュがプラズマ中心部の高速イオン位相空間密度を減少させ、ピッチがゼロに近い粒子よりもピッチが1に近い粒子により強く影響することを確認する。

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Fusion Advanced Studies TorusEnergetic ionThomson scatteringCollective Thomson scattering
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