Reduced edge instability and improved confinement in the MST reversed-field pinch

B. E. Chapman, J. K. Anderson, T. M. Biewer, D. L. Brower, S. Castillo, P. K. Chattopadhyay, C. S. Chiang, D. Craig, D. J. Den Hartog, G. Fiksel, P. W. Fontana, C. B. Forest, S. Gerhardt, A. K. Hansen, D. Holly, Y. Jiang, N. E. Lanier, S. C. Prager, J. C. Reardon, J. S. Sarff

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Improved confinement has been achieved in the MST through control of the poloidal electric field, but it is now known that the improvement has been limited by bursts of an edge-resonant instability. Through refined poloidal electric field control, plus control of the toroidal electric field, we have suppressed these bursts. This has led to a total beta of 15% and a reversed-field-pinch-record estimated energy confinement time of 10 ms, a tenfold increase over the standard value which for the first time substantially exceeds the confinement scaling that has characterized most reversed-field-pinch plasmas.

Original languageEnglish (US)
Pages (from-to)205001-1-205001-4
JournalPhysical review letters
Issue number20
StatePublished - Nov 12 2001

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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