Creation and control of variably shaped plasmas in TCV
During the first year of operation, the TCV tokamak has produced a large variety of plasma shapes and magnetic configurations. A new shape control algorithm, based on a finite element reconstruction of the plasma current in real time, has been implemented. Vertical growth rates of 800/s, corresponding to a stability margin f = 1.15, have been stabilised. Ohmic H-modes, with energy confinement times reaching 80 ms, have been obtained in single-null X-point deuterium discharges with the ion grad B drift towards the X-point. Limiter H-modes with maximum line averaged electron densities of 1.7 x 1.0 E20/m3 have been observed in D-shaped plasmas with I(p) in the range 360-600 kA.
Bibliographic Reference: Report: LRP 493/94 EN (1994) 11 pp.
Availability: Available from Confédération Suisse, Centre de Recherches en Physique des Plasmas, Ecole Polytechnique Fédérale de Lausanne, 21 avenue des Bains, 1007 Lausanne (CH)
Record Number: 199411470 / Last updated on: 1994-12-06
Original language: en
Available languages: en