Proto-CIRCUS tilted-coil tokamak–torsatron hybrid: Design and construction

•A tokamak-like device with tilted toroidal field (TF) coils needs less plasma current than a conventional tokamak.•Rotational transform is partly generated by external coils. Device can be considered a tokamak–torsatron hybrid.•We designed and constructed the first device of this type.•Tilted TF co...

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Bibliographic Details
Published in:Fusion engineering and design 2014-11, Vol.89 (11), p.2732-2737
Main Authors: Clark, A.W., Doumet, M., Hammond, K.C., Kornbluth, Y., Spong, D.A., Sweeney, R., Volpe, F.A.
Format: Article
Language:English
Subjects:
Coils
Construction
Devices
Electron cyclotron resonance
Interlinked coils
Mathematical models
Plasma currents
Rotational
Rotational transform
Stellarator
Tilted coils
Tokamak devices
Transforms
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Summary:•A tokamak-like device with tilted toroidal field (TF) coils needs less plasma current than a conventional tokamak.•Rotational transform is partly generated by external coils. Device can be considered a tokamak–torsatron hybrid.•We designed and constructed the first device of this type.•Tilted TF coils are interlinked to each other, which helps to reduce aspect ratio of plasma.•This is a six-coil generalization of CNT stellarator, also at Columbia University, which features two interlinked coils. We present the field-line modeling, design, and construction of a prototype circular-coil tokamak–torsatron hybrid called Proto-CIRCUS. The device has a major radius R=16cm and minor radius a
ISSN:0920-3796
1873-7196
DOI:10.1016/j.fusengdes.2014.07.012