Solenoid-free Plasma Startup in NSTX using Coaxial Helicity Injection

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概要

• 論文の詳細を見る

• The favorable properties of the Spherical Torus (ST) arise from its very small aspect ratio. However, small aspect ratio devices have very restricted space for a substantial central solenoid. Thus methods for initiating the plasma current without relying on induction from a central solenoid are essential for the viability of the ST concept. Coaxial Helicity Injection (CHI) is a promising candidate for solenoid-free plasma startup in a ST. Recent experiments on the HIT-II ST at the University of Washington, have demonstrated the capability of a new method, referred to as transient CHI, to produce a high quality, closed-flux equilibrium that has then been coupled to induction, with a reduced requirement for transformer flux [R. Raman, T. R. Jarboe, B. A. Nelson, et al., Phys. Rev. Lett., 075005-1 (2003)]. An initial test of this method on NSTX has produced about 140 kA of toroidal current. Modifications are now underway to improve capability for transient CHI in NSTX.

• 社団法人 電気学会の論文

著者

• RAMAN Roger

  University of Washington

• Leblanc Benoit

  Princeton University Plasma Physics Laboratory

• Bush Charles

  Oak Ridge National Laboratory

• Jarboe Thomas

  University of Washington

• Bell Michael

  Princeton Plasma Physics Laboratory

• Mueller Dennis

  Princeton Plasma Physics Laboratory

• Nelson Brian

  University of Washington

• Nagata Masayoshi

  University of Hyogo

• Biewer Theodor

  Princeton Plasma Physics Laboratory

• LeBlanc Benoit

  Princeton Plasma Physics Laboratory

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