Toroidal Alfvén eigenmode (TAE) bursts are often observed in relatively low-magnetic-field experiments in the Large Helical Device (LHD) with tangential nuclear beam injection. During TAE bursts, hole-clump pairs in real space were observed in previous studies. In order to observe the behavior of the energetic particles during TAE bursts in more detail, a tangential E-parallel-B-type neutral particle analyzer (E||B-NPA) was upgraded to improve the time resolution up to 100 kilo samples per second by updating its measurement electronic circuits. Using this high time resolution E||B-NPA, the clump formations are clearly observed in real space. In order to analyze the observed particles with high time resolution, the conditional averaging technique is used. The lost energetic particles with 150 keV were initially observed just before the TAE burst, and the energy decreases faster than the classical slowing down time. The energetic particles transported by the TAE burst were detecte...

中文翻译：

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在LHD的TAE爆发过程中使用升级的中性粒子分析仪观察传输粒子轨道的团块结构

在具有切线核束注入的大型螺旋装置（LHD）中，在相对低磁场的实验中经常观察到环形Alfvén本征模式（TAE）爆发。在TAE爆发期间，在先前的研究中观察到了真实空间中的空穴-结块对。为了更详细地观察TAE爆发期间高能粒子的行为，对切向E-平行B型中性粒子分析仪（E || B-NPA）进行了升级，以将时间分辨率提高至每100千克样品第二，更新其测量电子电路。使用这种高时间分辨率E || B-NPA，可以在实际空间中清楚地观察到结块形成。为了以高时间分辨率分析观察到的粒子，使用了条件平均技术。在TAE爆发之前，最初观察到了150 keV的高能粒子损失，并且能量的下降速度比传统的减速时间快。TAE爆发传输的高能粒子被检测到...