TY - JOUR
T1 - Operation at the tokamak equilibrium poloidal beta-limit in TFTR
AU - M.e. Mauel, Mauel
AU - G.a. Navratil, Navratil
AU - S.a. Sabbagh, Sabbagh
AU - M.g. Bell, Bell
AU - R.v. Budny, Budny
AU - E.d. Fredrickson, Fredrickson
AU - R.j. Hawryluk, Hawryluk
AU - A.c. Janos, Janos
AU - D.w. Johnson, Johnson
AU - D.c. McCune, McCune
AU - K.m. McGuire, McGuire
AU - S.s. Medley, Medley
AU - D. Mueller, Mueller
AU - D.k. Owens, Owens
AU - H.k. Park, Park
AU - A.t. Ramsey, Ramsey
AU - B.c. Stratton, Stratton
AU - E.j. Synakowski, Synakowski
AU - G. Taylor, Taylor
AU - R.m. Weiland, Weiland
AU - M.c. Zarnstorff, Zarnstorff
AU - J. Kesner, Kesner
AU - E.s. Marmar, Marmar
AU - J.l. Terry, Terry
PY - 1992
Y1 - 1992
N2 - High poloidal beta (βp approximately 5) discharges produced with nearly balanced tangential neutral beam injection into low current discharges in the TFTR tokamak are described. As βp exceeds approximately 1.2 times the aspect ratio, a separatrix with an inside poloidal field null is observed to limit the outer boundary of the plasma. Since the curvature of TFTR's applied vertical field is constant, the appearance of the poloidal field null corresponds to the equilibrium poloidal beta limit.
AB - High poloidal beta (βp approximately 5) discharges produced with nearly balanced tangential neutral beam injection into low current discharges in the TFTR tokamak are described. As βp exceeds approximately 1.2 times the aspect ratio, a separatrix with an inside poloidal field null is observed to limit the outer boundary of the plasma. Since the curvature of TFTR's applied vertical field is constant, the appearance of the poloidal field null corresponds to the equilibrium poloidal beta limit.
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U2 - 10.1088/0029-5515/32/8/I14
DO - 10.1088/0029-5515/32/8/I14
M3 - Article
AN - SCOPUS:0026910578
SN - 0029-5515
VL - 32
SP - 1468
EP - 1473
JO - Nuclear Fusion
JF - Nuclear Fusion
IS - 8
M1 - I14
ER -