LOW VOLTAGE START-UP IN THE CLEO TOKAMAK USING ECRH
Studies of ECRH assisted start-up in the CLEO tokamak have resulted in the production of well controlled discharges with I-p 13kA, n-e 5 x 10**18 m**-3 in the presence of a loop voltage V-I < 2V throughout. The average loop voltage during the start-up phase is ? 1.1 V, corresponding to an electric field E ? 0,19 V/m, and results in an average rate of current rise of dI/dp x dt 0.44 MA/s. Calculated over the whole of the current rise phase there is a ? 50% reduction in volt-second consumption when compared with the best case in the absence of rf power. It is estimated that during the plasma current rise ? 30-50% of the electromagnetic energy input from the poloidal field is converted to stored magnetic energy.
Bibliographic Reference: WRITE TO THE LIBRARIAN, UKAEA, CULHAM LABORATORY, ABINGDON, OXON OX14 3DB (UK), MENTIONING REPORT CLM-P 758, 1985
Record Number: 1989124097100 / Last updated on: 1987-01-01
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