J.H.F. Severo et al 2003 Nucl. Fusion 43 1047 doi:10.1088/0029-5515/43/10/005
Plasma residual rotation in the TCABR tokamak
J.H.F. Severo1, I.C. Nascimento, V.S. Tsypin and R.M.O. Galvão
Show affiliationsThis paper reports the first results on the measurement of the radial profiles of plasma poloidal and toroidal rotation performed on the TCABR tokamak, in the collisional regime (Pfirsch–Schluter), using Doppler shift of carbon spectral lines, measured with a high precision optical spectrometer. The results for poloidal rotation show a maximum velocity of (4.5 ± 1.0) × 103 m s−1 at 
, (a—limiter radius), in the direction of the diamagnetic electron drift. Within the error limits, reasonable agreement is obtained with calculations using the neoclassical theory for a collisional plasma, except near the plasma edge, as expected. For toroidal rotation, the radial profile shows that the velocity decreases from a counter-current value of (20 ± 1) × 103 m s−1, at the plasma core, to a co-current value of (2.0 ± 0.9) × 103 m s−1 near the limiter. An agreement within a factor 2, for the plasma core rotation, is obtained with calculations using the model proposed by Kim, Diamond and Groebner (1991 Phys. Fluids B 3 2050).
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Issue 10 (October 2003)
Received 15 October 2002, accepted for publication 28 July 2003
Published 4 September 2003
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Plasma residual rotation in the TCABR tokamak
J.H.F. Severo et al 2003 Nucl. Fusion 43 1047
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