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Sawteeth and energy confinement in the Madison Symmetric Torus reversed-field pinch (1996)

Chapman, B. E. ; Almagri, A. F. ; Cekic, M. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Physics of Plasmas 3 (1996), S. 709-711

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ISSN: 1089-7674

Source: AIP Digital Archive

Topics: Physics

Notes: Most Madison Symmetric Torus (MST) [Fusion Technol. 19, 131 (1991)] reversed-field pinch discharges exhibit sawtooth oscillations with a period of 2–5 ms, corresponding to magnetohydrodynamic (MHD) instability and increased transport. However, in discharges where the plasma-facing wall has been boronized, the plasma resistivity is reduced, and sawteeth are often suppressed for periods up to 20 ms. The energy confinement time during these sawtooth-free periods is triple the normal value, corresponding to a higher plasma temperature and lower Ohmic input power. In addition, the steady growth of the dominant magnetic fluctuations normally observed between sawtooth crashes is absent. © 1996 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.871775

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