Operation of TCSU with Internal Flux-Conserving Rings |
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| Authors: | J A Grossnickle R D Brooks C L Deards A L Hoffman P A Melnik K E Miller R D Milroy A Tankut K M Velas G C Vlases |
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| Affiliation: | 1. Redmond Plasma Physics Laboratory, University of Washington, Seattle, WA, USA
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| Abstract: | The Translation, Confinement, and Sustainment Upgrade (TCSU) device is a facility to form and sustain a field-reversed configuration (FRC) in quasi-steady state using rotating magnetic fields (RMF). Recent campaigns include Ti gettering, the installation of a set of internal flux rings, and RMF frequency scans. The Ti gettering campaign was successful, reduced impurities, and reduced deuterium recycling from the walls allowing density control and hotter FRCs J.A. Grossnickle et al., Phys. Plasmas 17, 032506 (2010)]. Internal flux rings have been installed to provide a uniform flux surface and minimize plasma-wall contact. Results from the internal flux ring operation and an additional Ti gettering campaign are reported. RMF frequencies of 123 kHz and 170 kHz have been investigated and initial results are reported. |
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