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Increasing the beta limit due to neoclassical tearing modes by raising the axial safety factor q (0) > 1

机译:通过提高轴向安全系数q(0)> 1,增加由于新古典撕裂模式引起的beta极限

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摘要

Resistive neoclassical tearing modes (NTMs) can cause the stable beta value in long pulse high confinement plasmas to fall significantly below that predicted by ideal theory. The NTM islands which degrade confinement and limit beta are induced and sustained by helically perturbed bootstrap currents. A combination of shaping and q-profile modification is used in the DIII-D tokamak to increase this beta limit.
机译:电阻性新古典撕裂模式(NTM)可能导致长脉冲高约束等离子体中的稳定beta值大大低于理想理论所预测的值。螺旋状自举电流会诱发并维持NTM岛的降级和限制β值。 DIII-D托卡马克中使用了整形和q轮廓修改的组合来增加此beta限制。

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