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First absolute measurements of fast-ion losses in the ASDEX Upgrade tokamak

M Rodriguez-Ramos, M Garcia-Munoz, M C Jimenez-Ramos, J Garcia Lopez, J Galdon-Quiroga, L Sanchis-Sanchez, J Ayllon-Guerola, M Faitsch, J Gonzalez-Martin, A Hermann2017年Plasma Physics and Controlled FusionIF 2.2出版社

A new diagnostic technique that allows to obtain absolute fluxes of fast-ion losses measured with absolutely calibrated scintillator based fast-ion loss detectors (FILD) is presented here. First absolute fluxes of fast-ion losses have been obtained in the ASDEX Upgrade tokamak. An instrument function that includes the scintillator efficiency, collimator geometry, optical transmission and camera efficiency has been constructed. The scintillator response to deuterium ions in the relevant energy range of fast-ions has been characterized using a tandem accelerator. Absolute flux of neutral beam injection (NBI) prompt losses has been obtained in magnetohydrodynamic quiescent plasmas. The temporal evolution of the heat load measured with FILD follows that measured at the FILD entrance obtained with an Infra-Red camera looking at the FILD detector head. ASCOT simulations are in good agreement with the absolute heat load of NBI prompt losses measured with FILD.

日本語訳

高速イオン損失の絶対フラックスを取得することを可能にする新しい診断手法が、絶対較正されたシンチレータベースの高速イオン損失検出器(FILD)を用いてここに提示される。ASDEX Upgradeトカマクにおいて、高速イオン損失の最初の絶対フラックスが取得された。シンチレータ効率、コリメータ幾何学、光学伝送、およびカメラ効率を含む装置関数が構築された。関連する高速イオンエネルギー範囲における重水素イオンに対するシンチレータ応答が、タンデム加速器を用いて特性評価された。磁気流体力学(MHD)的に静穏なプラズマにおいて、中性粒子ビーム入射(NBI)による即時損失の絶対フラックスが取得された。FILD検出器ヘッドを観測する赤外線カメラを用いて取得されたFILD入射部での熱負荷の時間発展は、測定された熱負荷の時間発展と一致する。ASCOTシミュレーションは、FILDを用いて測定されたNBI即時損失の絶対熱負荷と良好な一致を示す。

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asdex-upgrade高精度(タイトル一致)

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Fusion Advanced Studies TorusASDEXASDEX UpgradeEnergetic ionIon loss
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