Recent improvements in confinement and beta in the MST reversed-field pinch

D.J. Den Hartog, J.-W. Ahn, A.F. Almagri, J.K. Anderson, A.D. Beklemishev, A.P. Blair, F. Bonomo, M.T. Borchardt, D.L. Brower, D.R. Burke, M. Cengher, B.E. Chapman, S. Choi, D.J. Clayton, W.A. Cox, S.K. Combs, D. Craig, H.D. Cummings, V.I. Davydenko, D.R. DemersB.H. Deng, W.X. Ding, F. Ebrahimi, D.A. Ennis, G. Fiksel, C. Foust, C.B. Forest, P. Franz, L. Frassinetti, S. Gangadhara, J.A. Goetz, R.W. Harvey, D.J. Holly, B.F. Hudson, A.A. Ivanov, M.C. Kaufman, A.V. Kuritsyn, A.A. Lizunov, T.W. Lovell, R.M. Magee, L. Marrelli, P. Martin, K.J. McCollam, M.C. Miller, V.V. Mirnov, P.D. Nonn, R. O'Connell, S.P. Oliva, P. Piovesan, S.C. Prager, I. Predebon, J.A. Reusch, J.S. Sarff, V.A. Svidzinski, T.D. Tharp, M.A. Thomas, Yu.A. Tsidulko, M.D. Wyman, T. Yates

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In the general area of confinement improvement and concept advancement, recent results in the Madison Symmetric Torus (MST) reversed-field pinch (RFP) include good confinement of both thermal and large-orbit ions and near doubling of total beta to 26% with deuterium pellet injection. Current profile control enables MST to reduce stochastic transport and achieve tokamak-like confinement. In standard RFP operation, substantial MHD tearing mode activity results in stochastic transport and an energy confinement time of about 1 ms in MST. Application of inductive current profile control reduces MHD activity and accompanying stochasticity, improving confinement by about a factor of ten. Previous work concentrated on electron confinement in improved-confinement RFP operation. Recent work confirms that ions are also well confined, and that high beta and improved confinement can be achieved simultaneously. © 2007 IAEA, Vienna.
Original languageEnglish
Pages (from-to)-
JournalNuclear Fusion
Issue number9
Publication statusPublished - 2007
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Den Hartog, D. J., Ahn, J-W., Almagri, A. F., Anderson, J. K., Beklemishev, A. D., Blair, A. P., ... Yates, T. (2007). Recent improvements in confinement and beta in the MST reversed-field pinch. Nuclear Fusion, 47(9), -.