在三维混合动力-MHD程序MEGA中实现合成快离子损失探测器和成像重离子束探针诊断
Implementation of synthetic fast-ion loss detector and imaging heavy ion beam probe diagnostics in the 3D hybrid kinetic-MHD code MEGA
摘要：
合成的快离子损失探测器（FILD）和成像重离子束探针（i-HIBP）已经在三维混合动力学-磁流体动力学程序MEGA中实现。利用MEGA模拟了中性束注入（NBI）驱动的阿尔文本征模（AE），首次获得了这两种诊断的综合测量结果。合成快离子损失与AE幅度有很强的相关性。这种相关性是在相空间中观察到的，用坐标环正则动量和能量表示。快离子损失和受限粒子数的能量交换图与常数E'（E和P的线性组合）的线相连。第一个i-HIBP合成信号也已计算出模拟AE，显示出约1 mm量级的走向线位移，高于i-HIBP闪烁体中约100 μm的预期分辨率。
英文摘要：
A synthetic Fast-Ion Loss Detector (FILD) and an imaging Heavy Ion Beam Probe (i-HIBP) have been implemented in the 3D hybrid kinetic-magnetohydrodynamic code MEGA. First synthetic measurements from these two diagnostics have been obtained for neutral beam injection (NBI) driven Alfvén Eigenmode (AE) simulated with MEGA. The synthetic fast-ion losses show a strong correlation with the AE amplitude. This correlation is observed in the phase-space, represented in coordinates toroidal canonical momentum and energy. Fast-ion losses and the energy exchange diagrams of the confined population are connected with lines of constant E' , a linear combination of E and Pϕ . First i-HIBP synthetic signals also have been computed for the simulated AE, showing displacements in the strikeline of the order of around 1 mm, above the expected resolution in the i-HIBP scintillator of approximately 100 μm.
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