Modeling of high harmonic fast wave current drive on EAST tokamak
Modeling of high harmonic fast wave current drive on EAST tokamak
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EAST 托卡马克高次谐波快波电流驱动建模
DOI：
10.1063/1.4933355
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发表时间：
2015-10
影响因子：
2.2
通讯作者：
Li F. Y.
中科院分区：
文献类型：
--
作者：
Li J. C.;Gong X. Y.;Dong J. Q.;Gao Q. D.;Zhang N.;Li F. Y.
高次谐波快波（HHFW）是无感电流驱动（CD）的候选者之一，这对于托卡马克的长脉冲或稳态运行至关重要。对 EAST 托卡马克等离子体中 HHFW 驱动的电流进行了数值研究。发现HHFW CD效率随波频率非单调增加，这种现象归因于HHFW的多道吸收。证实了CD效率对发射波的平行折射率值的敏感性。在采用 GENRAY/CQL3D 封装的 HHFW 电流驱动中，准线性效应被评估为显着，随着 RF 功率的增加，CD 效率显着增加，这与螺旋电流驱动有很大不同。还对一系列环形直流电场与一系列快波功率相结合进行了仿真，结果表明直流场的存在也可以提高 CD 效率。
High harmonic fast waves (HHFW) are among the candidates for non-inductive current drive (CD), which is essential for long-pulse or steady-state operation of tokamaks. Current driven with HHFW in EAST tokamak plasmas is numerically studied. The HHFW CD efficiency is found to increase non-monotonically with the wave frequency, and this phenomenon is attributed to the multi-pass absorption of HHFW. The sensitivity of CD efficiency to the value of the parallel refraction index of the launched wave is confirmed. The quasilinear effects, assessed as significant in HHFW current drive with the GENRAY/CQL3D package, cause a significant increase in CD efficiency as RF power is increased, which is very different from helicon current drive. Simulations for a range of toroidal dc electric fields, in combination with a range of fast wave powers, are also presented and indicate that the presence of the DC field can also enhance the CD efficiency.
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影响因子：
2.2
作者：
C. Petty;F. Baity;J. Degrassie;T. Mau;R. Pinsker;M. Porkolab;R. Prater
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影响因子：
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通讯作者：
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影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
R. Prater;C. Moeller;R. Pinsker;M. Porkolab;O. Meneghini;V. Vdovin