Bulletin of the American Physical Society
56th Annual Meeting of the APS Division of Plasma Physics
Volume 59, Number 15
Monday–Friday, October 27–31, 2014; New Orleans, Louisiana
Session UP8: Poster Session VIII: FRC, Spheromaks, Stellarators and Other Magnetic Confinement Systems; HEDP & ICF: Hydro, Simulations and Diagnostics
Thursday, October 30, 2014
Room: Preservation Hall
Abstract ID: BAPS.2014.DPP.UP8.4
Abstract: UP8.00004 : A Field-Reversed Configuration Plasma Translated into a Neutral Gas Atmosphere*
Preview Abstract Abstract
A field-reversed configuration (FRC) is a compact toroid dominantly with poloidal magnetic field. Because of its simply-connected configuration, an FRC can be translated axially along a gradient of guide magnetic field, and trapped in a confinement region with quasi-static external magnetic field. FRC translation experiments have been performed several facilities. Translation speed of those translated FRCs is comparable with super-Alfvenic speed of approximately 200km/s. In this experiments, FRC translation has been performed on the FAT (FRC Amplification via Translation) facility. Achieved translation speed in the case of translation into a confinement chamber maintained as the vacuum state is in the range from 130 to 210 km/s. On the other hand, FRC translation into a statically filled deuterium gas atmosphere has also been performed. In the case of translation into filled neutral gas, FRC translation speed is approximately 80km/s and the separatrix volume has extremely expanded compared with the case of a vacuum state. The phenomenon suggests the presence of regeneration process of translation kinetic energy back into the internal plasma energy during the translation process.
*This work was partially supported by ``Nihon University Symbolic Project.'' The authors gratefully acknowledge contributions from Nac Image Technology Inc. on the fast camera measurements.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.DPP.UP8.4
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