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Ion temperature measurements in a tokamak using active neutral particle analyzers diagnostics

N N Bakharev, F V Chernyshev, V K Gusev, E O Kiselev, G S Kurskiev, M M Larionova, A D Melnik, V B Minaev, M I Mironov, I V Miroshnikov2020年Plasma Physics and Controlled FusionIF 2.2出版社

Active ion temperature measurement in the core plasma of a tokamak using active neutral particle analyzers (NPA) diagnostics is considered. Two approaches for local ion temperature reconstruction are reviewed: semi-analytical and iterative. A semi-analytical approach allows the calculation of ion temperature using simple expression, while a more complex iterative approach provides more flexibility. Problems associated with active NPA measurements and their possible solutions are discussed. An example of the core ion temperature profile reconstruction in the compact spherical tokamak Globus-M2 using both approaches is shown. Problems associated with active ion temperature measurements in a compact reactor and possible solutions are considered.

日本語訳

トカマクの中心プラズマにおけるイオン温度測定のためのアクティブ中性粒子分析器(NPA)診断について考察する。イオン温度の局所再構成には、半解析的手法と反復的手法の2つのアプローチを検討する。半解析的手法は、より単純な式を用いてイオン温度の計算を可能にする一方、より複雑な反復的手法は、より高い柔軟性を提供する。アクティブNPA測定に伴う問題点とその可能な解決策について議論する。球状トカマクGlobus-M2における両手法を用いた中心イオン温度分布の再構成の例を示す。コンパクトな炉におけるアクティブイオン温度測定に伴う問題点と可能な解決策について考察する。

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