Coupling LHW power to plasma by gas puffing in HT-7

  • B. J. Ding
  • , L. Z. Zhang
  • , Y. L. Qin
  • , J. F. Shan
  • , F. K. Liu
  • , M. Wang
  • , L. G. Meng
  • , D. X. Wang
  • , J. Q. Feng
  • , Y. X. Jie
  • , Y. W. Sun
  • , B. Shen
  • , X. M. Wang
  • , J. H. Wu
  • , X. Gao
  • , X. D. Zhang
  • , G. L. Luo
  • , Y. P. Zhao
  • , B. N. Wan
  • , J. G. Li

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

Abstract

Long distance coupling experiments in HT-7 were carried out with the method that the gas is puffed just around the antenna. Without gas puffing, only 115kW LHW are injected when the distance is up to about 8cm. By means of the CD4 puffing, the maximum of the 230kW LHW is stably coupled to the plasma by means of this gas puffing. The variation of the lined averaged density in the different channel gives a possible evidence of the ionization mechanism of neutral gas. The effect of the gas flow rate on the wave-plasma coupling shows that an optimized gas flow rate is necessary for good coupling.

Original languageEnglish
Title of host publication35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Pages1638-1641
Number of pages4
Edition3
StatePublished - 2008
Event35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets - Hersonissos, Crete, Greece
Duration: 9 Jun 200813 Jun 2008

Publication series

Name35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Number3
Volume32

Conference

Conference35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets
Country/TerritoryGreece
CityHersonissos, Crete
Period9/06/0813/06/08

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