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CFETR 电流 驱动的 初步讨论. 李国强 任启龙 刘素梅 宋云涛 中科院等离子体物理 研究所. 中性 束切向注入. 目前的窗口 应该 可以实现中性束切向注入 ITER NBI aperture size ( 58cm,136cm ) May vertically tilt to drive off-axis current. The driven current of different injection angle. 磁轴高度上水平入射 1 MeV NNBI, 30MW

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cfetr

CFETR电流驱动的初步讨论

李国强 任启龙 刘素梅 宋云涛

中科院等离子体物理研究所

slide2
中性束切向注入
  • 目前的窗口应该可以实现中性束切向注入
  • ITER NBI aperture size (58cm,136cm)
  • May vertically tilt to drive off-axis current
the driven current of different injection angle
The driven current of different injection angle
  • 磁轴高度上水平入射
  • 1 MeV NNBI, 30MW
  • density profile is scaled from DIII-D 136345.
  • ne=0.9e20/m^3
  • Density peaking=1.38
  • Calculated with ONETWO/ NUBEAM

Driven current of 30MW NBI

eccd for cfetr
ECCD for CFETR

140G 共振面

170G 共振面

  • 140 GHz ECCD was selected, O1 mode
  • density profile is scaled from DIII-D 136345
  • Calculated with ONETWO/TORAY-GA
    • For ITER, the CQL3D results are about 1.2 times of TORAY-GA
  • 弱场侧斜上方入射,扫描入射角度
  • 需要更多的扫描计算

30MW ECCD, 环向角230度

slide6
LHCD
  • LHCD efficiency becomes lower with the density increase, but still higher than NBCD and ECCD
  • But the driven current cannot access the core region

FDF, 30MW

ITER, 30MW, ne=7.25e19/m^3

discussion
Discussion
  • Lower density is beneficial for CD
  • How to balance the density and fusion power?
  • The combination of Heating/CD ?