Initial results from solenoid-free plasma start-up using Transient CHI on QUEST

K. Kuroda, R. Raman, K. Hanada, M. Hasegawa, T. Onchi, M. Ono, B. A. Nelson, T. R. Jarboe, M. Nagata, O. Mitarai, K. Nakamura, H. Idei, J. Rogers, S. Kawasaki, T. Nagata, A. Kuzmin, S. Kojima, C. Huang, O. Watanabe, A. HigashijimaY. Takase, A. Fukuyama, S. Murakami

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Abstract

Initial results from the recently implemented transient coaxial helicity injection (CHI) system on QUEST are reported. QUEST uses a new CHI electrode configuration in which the CHI insulator is not part of the vacuum boundary, making this configuration easier to implement in fusion reactors. Experimental results show that transient CHI startup in this alternate electrode configuration is indeed possible. Reliable gas breakdown was achieved, and toroidal currents up to 45 kA were generated.

Original languageEnglish
Article number115001
JournalPlasma Physics and Controlled Fusion
Volume60
Issue number11
DOIs
Publication statusPublished - Sep 14 2018

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All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering
  • Condensed Matter Physics

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