Sawtooth observations in ramp up experiments assisted by lower hybrid current drive in HT-7

  • B. J. Ding
  • , J. F. Shan
  • , F. K. Liu
  • , M. Wang
  • , H. D. Xu
  • , G. R. Zhang
  • , M. Jiang
  • , F. Huang
  • , Z. W. Wu
  • , L. Q. Hu
  • , X. Gao
  • , B. N. Wan
  • , Y. P. Zhao
  • , G. L. Kuang
  • , J. G. Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Current ramp-up experiments assisted with lower hybrid current drive (LHCD) have been performed with a newly developed multijunction grill in the HT-7 tokamak. A maximum of driven current (≈107kA) by LHCD has been obtained with an incident lower hybrid wave (LHW) power of PLHW≈210kW. Analysis of sawtooth periods with different LHW power spectra indicates that the fastest plasma transport occurs at Δφ =0°, followed by Δφ =60°, and finally Δφ =150°. Studies show that the plasma transport indicated by the sawtooth period is mainly affected by the driven current density profile.

Original languageEnglish
Title of host publication32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
Pages293-296
Number of pages4
StatePublished - 2005
Event32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets - Tarragona, Spain
Duration: 27 Jun 20051 Jul 2005

Publication series

Name32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts
Volume1

Conference

Conference32nd European Physical Society Conference on Plasma Physics and Controlled Fusion combined with the 8th International Workshop on Fast Ignition of Fusion Targets
Country/TerritorySpain
CityTarragona
Period27/06/051/07/05

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