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首页> 外文期刊>Bulletin of the American Physical Society >APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Improved H mode with flat central q profile on EAST
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APS -59th Annual Meeting of the APS Division of Plasma Physics - Event - Improved H mode with flat central q profile on EAST

机译：APS-等离子体物理APS部门第59届年会-活动-改进的H模式，在EAST上具有平坦的中央q轮廓

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High betaN (extasciitilde 1.8) plasma with good confinement (H98y2extasciitilde 1.1) on EAST tokamak has been reported recently. These ELMy H-mode plasmas with B$_{mathrm{t}}=$1.6T, I$_{mathrm{p}}=$400 kA and q$_{mathrm{95}}approx $4.5 were heated by lower hybrid wave and neutral beam injection. The internal transport barrier (ITB) and edge transport barrier (ETB) are both observed with m$=$1/1 fishbone, which were identified to clamp central~q~at values close to unity. Implying an improved H-mode with flat central q profile and absence of sawteeth, like other devices. Accurate q profile, key profile for developing scenarios aim at high performance H mode, were derived by Polarimeter-interferometer (POINT) measurement as constraint. Base on the optimized current profile, better confinement (H98y2extasciitilde 1.4) with an electron ITB was obtained also with flat central q profile and absence of sawteeth at high betaP (extasciitilde 2) regime with B$_{mathrm{t}}=$2.5T, I$_{mathrm{p}}=$400 kA. Both high betaN$_{mathrm{hinspace hinspace }}$regime and high betaP$_{mathrm{hinspace }}$regime H mode, are characterized by a stationary flat central q profile q0$ge $1, but typically close to 1, absence of sawteeth, H98(y,2) extgreater 1 and simultaneously, with ITB.
机译：最近已经报道了在EAST托卡马克上具有良好封闭（H98y2extasciitilde 1.1）的高betaN（extasciciililde 1.8）血浆。这些具有B $ _ {mathrm {t}} = $ 1.6T，I $ _ {mathrm {p}} = $ 400 kA和q $ _ {mathrm {95}}约$ 4.5的ELMy H型等离子体由下混合波加热和中性束注入。内部运输壁垒（ITB）和边缘运输壁垒（ETB）都在m / n $ = $ 1/1鱼骨上观察到，它们被确定为将中心点钳制在接近于1的值上。与其他设备一样，这意味着改进的H模式具有平坦的中央q轮廓和无锯齿状。精确的q曲线是针对高性能H模式开发方案的关键曲线，它是通过偏振计干涉仪（POINT）测量得出的约束条件。根据优化的电流曲线，在中心β曲线平坦且B $ _ {mathrm {t}} = $ 2.5T的高betaP（extasciitilde 2）态下也没有锯齿的情况下，获得了具有电子ITB的更好的约束条件（H98y2extasciitilde 1.4）。 ，则I $ _ {mathrm {p}} = $ 400 kA。高betaN $ _ {mathrm {hinspace hinspace}} $ regime和高betaP $ _ {mathrm {hinspace}} $ regime H模式的特征在于中心q轮廓q0 $ ge $ 1平稳，但通常接近1，没有锯齿，H98（y，2）膨化剂1以及同时使用ITB。

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