Design Features and Commissioning of the Versatile Experiment Spherical Torus (VEST) at Seoul National University

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A new spherical torus called VEST (Versatile Experiment Spherical Torus) is designed, constructed and successfully commissioned at Seoul National University. A unique design feature of the VEST is two partial solenoid coils installed at both vertical ends of a center stack, which can provide sufficient magnetic fluxes to initiate tokamak plasmas while keeping a low aspect ratio configuration in the central region. According to initial double null merging start-up scenario using the partial solenoid coils, appropriate power supplies for driving a toroidal field coil, outer poloidal field coils, and the partial solenoid coils are fabricated and successfully commissioned. For reliable start-up, a pre-ionization system with two cost-effective homemade magnetron power supplies is also prepared. In addition, magnetic and spectroscopic diagnostics with appropriate data acquisition and control systems are well prepared for initial operation of the device. The VEST is ready for tokamak plasma operation by completing and commissioning most of the designed components.
Publisher
IOP PUBLISHING LTD
Issue Date
2013-03
Language
English
Article Type
Article
Citation

PLASMA SCIENCE & TECHNOLOGY, v.15, no.3, pp.244 - 251

ISSN
1009-0630
DOI
10.1088/1009-0630/15/3/11
URI
http://hdl.handle.net/10203/272864
Appears in Collection
NE-Journal Papers(저널논문)
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