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arXiv 1306.6156physics.plasm-ph
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快离子对托卡马克微湍流的非线性稳定

Nonlinear stabilization of tokamak microturbulence by fast ions

J. Citrin, C. Bourdelle, J. Garcia, J. W. Haverkort, G. M. D. Hogeweij, F. Jenko, T. Johnson, P. Mantica, M. J. Pueschel, D. Told, JET-EFDA contributors

摘要:

在特定的制度中发现的超热压力梯度的非线性电磁稳定被证明是一个关键因素,在减少托卡马克微湍流,增强显着的热压力电磁稳定。基于Mantica等人[Phys. Rev. Lett. 107 135004(2011)],该结果解释了实验观察到的离子热通量和刚度降低。这些发现有望改善先进托卡马克方案的反应堆相关制度的外推。

英文摘要:

Nonlinear electromagnetic stabilization by suprathermal pressure gradients found in specific regimes is shown to be a key factor in reducing tokamak microturbulence, augmenting significantly the thermal pressure electromagnetic stabilization. Based on nonlinear gyrokinetic simulations investigating a set of ion heat transport experiments on the JET tokamak, described by Mantica et al. [Phys. Rev. Lett. 107 135004 (2011)], this result explains the experimentally observed ion heat flux and stiffness reduction. These findings are expected to improve the extrapolation of advanced tokamak scenarios to reactor relevant regimes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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