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Numerical simulation of fast ion loss detector measurements for fishbones on JET

C. Perez von Thun, A. Perona, T. Johnson, M. Reich, S.E. Sharapov, V.G. Kiptily, M. Cecconello, A. Salmi, V.Ya. Goloborod'ko, S.D. Pinches2011年被引用 13Nuclear FusionIF 3出版社

A synthetic diagnostic model for the simulation of energy and pitch angle resolved measurements of fast ion losses obtained by 2D scintillation-type detectors is presented and subsequently tested on a JET discharge with fishbones (previously documented in Perez von Thun et al2010 Nucl. Fusion50 084009). The simulated energy and pitch angle distributions at the detector are found to be in excellent agreement with the measurements. The simulations further suggest that nearly all the fast ion losses take place in the early growth phase of the fishbone cycle, and reach their maximum well ahead of the magnetic perturbation peak.

日本語訳

高速イオン損失のエネルギーおよびピッチ角分解測定のシミュレーションのための合成診断モデルを提示し、フィッシュボーン不安定性を伴うJET放電(Perez von Thunら、2010年、Nucl. Fusion 50、084009に記載)において検証した。検出器におけるシミュレーションされたエネルギーおよびピッチ角分布は、測定結果と極めて良く一致することが示された。さらに、シミュレーションは、高速イオン損失のほぼ全てがフィッシュボーンサイクルの初期成長段階で発生し、磁気摂動のピークよりもかなり早い時点で最大に達することを示唆している。

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