Lower hybrid current drive experiments on Alcator C-Mod : Comparison with theory and simulation
Lower hybrid current drive experiments on Alcator C-Mod : Comparison with theory and simulation
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DOI：
10.1063/1.2904569
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发表时间：
2007-11
影响因子：
2.2
通讯作者：
P. Bonoli;J. Ko;R. Parker;A. Schmidt;G. Wallace;J. Wright;C. Fiore;A. Hubbard;J. Irby;E. Marmar;M. Porkolab;D. Terry;S. Wolfe;S. Wukitch;James R. Wilson;S. Scott;E. Valeo;C. Phillips;R. Harvey
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作者：
P. Bonoli;J. Ko;R. Parker;A. Schmidt;G. Wallace;J. Wright;C. Fiore;A. Hubbard;J. Irby;E. Marmar;M. Porkolab;D. Terry;S. Wolfe;S. Wukitch;James R. Wilson;S. Scott;E. Valeo;C. Phillips;R. Harvey
在Alcator C-Mod托卡马克上进行了低混合电流驱动实验。H. Hutchinson等人，物理学。等离子体1,1511(1994)]使用4.6GHz的射频系统。通过外推到零环路电压，从磁测量中推断出高达900kW的LH功率和驱动LH电流，产生neILHR0 / PLH≈2.5±0.2×1019（A / W / m2）的效率。我们使用射线追踪/三维（r,v⊥,v∥）Fokker-Planck代码GENRAY-CQL3D模拟了这些放电中的LH电流驱动（r . W. Harvey和M. McCoy，发表于1992年加拿大蒙特利尔的国际原子能机构热核等离子体模拟和建模技术委员会会议论文集），并发现了类似的电流驱动效率。CQL3D模拟的电流密度分布，包括欧姆和LH驱动，与运动斯塔克效应诊断的测量电流密度很好地吻合。非热x射线发射的测量证实了…
Lower hybrid (LH) current drive experiments have been carried out on the Alcator C-Mod tokamak [I. H. Hutchinson et al., Phys. Plasmas 1, 1511 (1994)] using a radio-frequency system at 4.6GHz. Up to 900kW of LH power has been coupled and driven LH currents have been inferred from magnetic measurements by extrapolating to zero loop voltage, yielding an efficiency of neILHR0∕PLH≈2.5±0.2×1019(A∕W∕m2). We have simulated the LH current drive in these discharges using the combined ray tracing/three-dimensional (r,v⊥,v∥) Fokker–Planck code GENRAY-CQL3D (R. W. Harvey and M. McCoy, in Proceedings of the IAEA Technical Committee Meeting on Simulation and Modeling of Thermonuclear Plasmas, Montreal, Canada, 1992) and found similar current drive efficiencies. The simulated profiles of current density from CQL3D, including both ohmic plus LH drive have been found to be in good agreement with the measured current density from a motional Stark effect diagnostic. Measurements of nonthermal x-ray emission confirm the pres...