Achievement of a New High-Confinement, Collisionless FRC State in TCS-Upgrade

Reducing impurity radiation and overall recycling in the Translation, Confinement, and Sustainment Upgrade (TCSU) device enabled the plasma to enter into a new, collisionless regime with temperatures well over 200 eV, substantially exceeding the radiation barrier. This new field reversed configurati...

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Bibliographic Details
Published in:Journal of fusion energy 2009-06, Vol.28 (2), p.152-155
Main Authors: Guo, H. Y., Hoffman, A. L., Miller, K. E., Milroy, R. D., Brooks, R. D., Deards, C. L., Grossnickle, J. A., Melnik, P. A., Steinhauer, L. C., Tankut, A., Vlases, G. C.
Format: Article
Language:English
Subjects:
Confinement
Efficiency
Energy
Energy Systems
Experiments
High temperature
Magnetic fields
Nuclear Energy
Nuclear Fusion
Original Paper
Physics
Physics and Astronomy
Plasma
Plasma Physics
Radiation
Sustainable Development
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Summary:Reducing impurity radiation and overall recycling in the Translation, Confinement, and Sustainment Upgrade (TCSU) device enabled the plasma to enter into a new, collisionless regime with temperatures well over 200 eV, substantially exceeding the radiation barrier. This new field reversed configuration (FRC) state exhibits the following key features: (1) dramatic improvement in current drive efficiency with ζ (ratio of average electron rotation frequency to RMF frequency) approaching 100%; (2) up to 3-fold increase in global energy confinement time; and (3) significant reduction in transport rates, accompanied by a striking transition from a Bohm-like transport to a Lower Hybrid Drift (LHD)-like transport that scales better than gyro-Bohm and as such is very favorable for next step FRC development.
ISSN:0164-0313
1572-9591
DOI:10.1007/s10894-008-9179-5