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Energetic ion loss detector on the Alcator C-Mod tokamak

机译:Alcator C-Mod托卡马克上的高能离子损失检测仪

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A scintillator-based energetic ion loss detector has been successfully commissioned on the Alcator C-Mod tokamak. This probe is located just below the outer midplane, where it captures ions of energies up to 2 MeV resulting from ion cyclotron resonance heating. After passing through a collimating aperture, ions impact different regions of the scintillator according to their gyroradius (energy) and pitch angle. The probe geometry and installation location are determined based on modeling of expected lost ions. The resulting probe is compact and resembles a standard plasma facing tile. Four separate fiber optic cables view different regions of the scintillator to provide phase space resolution. Evolving loss levels are measured during ion cyclotron resonance heating, including variation dependent upon individual antennae.
机译:基于闪烁体的高能离子损失检测器已在Alcator C-Mod托卡马克上成功调试。该探针位于外中平面的正下方,在此处捕获离子回旋共振加热产生的能量高达2 MeV的离子。穿过准直孔后,离子根据其陀螺半径(能量)和俯仰角撞击闪烁器的不同区域。探针的几何形状和安装位置是基于对预期损失离子的建模确定的。所得探针紧凑且类似于标准的等离子饰面砖。四个独立的光纤电缆可查看闪烁体的不同区域,以提供相空间分辨率。在离子回旋加速器共振加热期间测量不断变化的损耗水平,包括取决于各个天线的变化。

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