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Full wave simulations of fast wave heating losses in the scrape-off layer of NSTX and NSTX-U

N. Bertelli, E.F. Jaeger, J.C. Hosea, C.K. Phillips, L. Berry, S.P. Gerhardt, D. Green, B. LeBlanc, R.J. Perkins, P.M. Ryan2014年被引用 47Nuclear FusionIF 3出版社

Full wave simulations of fusion plasmas show a direct correlation between the location of the fast-wave cut-off, radiofrequency (RF) field amplitude in the scrape-off layer (SOL) and the RF power losses in the SOL observed in the National Spherical Torus eXperiment (NSTX). In particular, the RF power losses in the SOL increase significantly when the launched waves transition from evanescent to propagating in that region. Subsequently, a large amplitude electric field occurs in the SOL, driving RF power losses when a proxy collisional loss term is added. A 3D reconstruction of absorbed power in the SOL is presented showing agreement with the RF experiments in NSTX. Loss predictions for the future experiment NSTX-Upgrade (NSTX-U) are also obtained and discussed.

日本語訳

核融合プラズマの全波シミュレーションは、高速波の遮断位置、スクレイプオフ層(SOL)における高周波(RF)電界振幅、およびNational Spherical Torus eXperiment(NSTX)で観測されたSOLにおけるRF電力損失の間に直接的な相関があることを示している。特に、打ち上げられた波がその領域でエバネッセントから伝搬へと遷移するとき、SOLにおけるRF電力損失は有意に増大する。続いて、SOL内に大振幅の電界が発生し、衝突損失項の代理を追加するとRF電力損失が駆動される。SOLにおける吸収電力の3次元再構成が提示され、NSTXにおけるRF実験と一致することが示されている。将来の実験であるNSTX-Upgrade(NSTX-U)に対する損失予測も得られ、議論されている。

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nstx-u高精度(タイトル一致)

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Fusion Advanced Studies TorusScrape-off layerNSTXWave heatingNSTX-U
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