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Abstract

An analysis of the neutral beam current drive for ITER has been performed. The neutral beam deposition profile for a model elliptic equilibrium is evaluated for arbitrary density profiles, accounting for multistep ionisation. The neutral beam current density is calculated by using an approximate solution of the Fokker-Planck equation. A parameter scan has been performed by changing electron density, plasma temperature, the plasma effective ionic charge Z(eff), beam energy E(b), beam mass number, beam section and tangency radius of the beam centre. The largest values of the current drive figures-of-merit gamma(nb) = I(nb)nR/P are obtained for the largest beam energy. The obtained value of gamma(nb) for the ITER reference scenario is gamma(nb) = 0.6 for E(b) = 1.3 MeV, Z(eff) = 2.

Additional information

Authors: ZHANG C, Institute of Plasma Physics, Academia Sinica, Hefei (CN);ROMANELLI F, ENEA, Centro Ricerche Energia Frascati, Roma (IT)
Bibliographic Reference: Report: RT/NUCL/92/27 EN (1992) 40 pp.
Availability: Available from Servizio Studi e Documentazione, ENEA, Centro Ricerche Energia Frascati, C.P. 65-00044 Frascati, Roma (IT)
Record Number: 199310966 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en