EPJ Web of Conferences (Jan 2017)

Influence of Li conditioning on Lower Hybrid Current Drive efficiency in H-mode and L- mode plasmas on EAST

  • Goniche Marc,
  • Li Miaohui,
  • Peysson Yves,
  • Chen Yingjie,
  • Ding Bojiang,
  • Ekedahl Annika,
  • Liu Haiqing,
  • Liu Yong,
  • Qian Jinping,
  • Yang Xiuda,
  • Zang Qing,
  • Zhang Tao,
  • Zhen Sun,
  • Zou Xiao-Lan

DOI
https://doi.org/10.1051/epjconf/201715703018
Journal volume & issue
Vol. 157
p. 03018

Abstract

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The lower hybrid current drive efficiency on the EAST tokamak is estimated on a large database of low loop voltage discharges (VL of these discharges, can account for the high efficiency according to the expected scaling with Zeff and . Modelling with a ray-tracing code coupled to a Fokker-Planck solver supports this result, assuming that the fast electron transport is reduced in the zero loop voltage discharge with high efficiency.