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Coaxial helicity injection non-inductive startup on NSTX

  • B. A. Nelson
  • , R. Raman
  • , T. R. Jarboe
  • , D. Mueller
  • , M. G. Bell
  • , B. LeBlanc
  • , A. L. Roquemore
  • , H. W. Kugel
  • , V. Soukhanovskii

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Plasmas initiated by non-inductive transient coaxial helicity injection (CHI) have been successfully coupled to Ohmic ramp-up to achieve high-quality discharges in NSTX, reaching 800 kA and exhibiting H-mode. Conditioning of the divertor regions is found to improve both transient-CHI startup currents and coupling. Flux savings of transient-CHI startup plasmas over Ohmic ramp-up-only discharges has been demonstrated.

Original languageEnglish (US)
Title of host publication36th EPS Conference on Plasma Physics 2009, EPS 2009 - Europhysics Conference Abstracts
Pages837-840
Number of pages4
StatePublished - 2009
Event36th European Physical Society Conference on Plasma Physics 2009, EPS 2009 - Sofia, Bulgaria
Duration: Jun 29 2009Jul 3 2009

Publication series

Name36th EPS Conference on Plasma Physics 2009, EPS 2009 - Europhysics Conference Abstracts
Volume33 E2

Conference

Conference36th European Physical Society Conference on Plasma Physics 2009, EPS 2009
Country/TerritoryBulgaria
CitySofia
Period6/29/097/3/09

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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