Increased Confinement and {ital {beta}} by Inductive Poloidal Current Drive in the Reversed Field Pinch

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.62· OSTI ID:432550

Sarff, J; Lanier, N; Prager, S; Stoneking, M ^[1]

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1. University of Wisconsin, Madison, Wisconsin 53706 (United States)

With the addition of inductive poloidal current drive for current profile control in the Madison Symmetric Torus (MST) reversed field pinch, the magnetic fluctuation amplitude halves, leading to reduced energy and particle transport.A four- to five-fold increase in the energy confinement time to {tau}{sub E}{approximately}5 ms with both decreased Ohmic input power and increased stored thermal energy coincides with record low fluctuation amplitude and record high electron temperature {approximately}600 eV (for MST). {beta}[=2{mu}{sub o}{l_angle}p{r_angle}/B(a){sup 2}] increases from 6{percent} to 8{percent}. Other improvements include reduced electrostatic edge turbulence and plasma impurity content. {copyright} {ital 1996} {ital The American Physical Society}

• OSTI ID: 432550
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 1 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CONFINEMENT
ELECTRON TEMPERATURE
FLUCTUATIONS
INSTABILITY
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETOHYDRODYNAMICS
POLOIDAL FIELD DIVERTORS
REVERSE-FIELD PINCH
TURBULENCE