Improving fast-ion confinement in high-performance discharges by suppressing Alfvén eigenmodes
作者: G.J. KramerM. PodestàC. HolcombL. CuiN.N. GorelenkovB. GriersonW.W. HeidbrinkR. NazikianW. SolomonM.A. Van ZeelandY. Zhu
作者单位: 1Princeton Plasma Physics Laboratory, PO Box 451, Princeton, NJ 08543-0451, United States of America
2Lawrence Livermore National Laboratory, Livermore, CA 94550, United States of America
3University of California Irvine, Irvine, CA 92697, United States of America
4General Atomics, PO Box 85608, San Diego, CA 92186-5608, United States of America
刊名: Nuclear Fusion, 2017, Vol.57 (5)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1741-4326/aa6456
原始语种摘要: We show that the degradation of fast-ion confinement in steady-state DIII-D discharges is quantitatively consistent with predictions based on the effects of multiple unstable Alfvén eigenmodes on beam-ion transport. Simulation and experiment show that increasing the radius where the magnetic safety factor has its minimum is effective in minimizing beam-ion transport. This is favorable for achieving high performance steady-state operation in DIII-D and future reactors. A comparison between the experiments and a critical gradient model, in which only equilibrium profiles were used to predict the most unstable modes, show that in a number of cases this model reproduces the measured neutron rate well.
全文获取路径: IOP 

  • safety 安全
  • equilibrium 平衡
  • operation 运算
  • performance 性能
  • unstable 不稳定的
  • confinement 封闭
  • number 号码
  • steady 稳定的
  • between 在中间
  • minimizing 极小化