RADIAL ELECTRIC-FIELD MEASUREMENT IN A TOKAMAK BY THE INJECTION OF A PULSED NEUTRAL BEAM

Authors
DAVYDENKO VI IVANOV AA KARPUSHOV AN POZZOLI R ROME M RYUTOV DD
Citation
Vi. Davydenko et al., RADIAL ELECTRIC-FIELD MEASUREMENT IN A TOKAMAK BY THE INJECTION OF A PULSED NEUTRAL BEAM, Plasma physics and controlled fusion, 36(11), 1994, pp. 1805-1817
Citations number
31
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
Plasma physics and controlled fusion → ACNP
ISSN journal
07413335
Volume
36
Issue
11
Year of publication
1994
Pages
1805 - 1817
Database
ISI
SICI code
0741-3335(1994)36:11<1805:REMIAT>2.0.ZU;2-G
Abstract
The detection of the profile of the radial electric held of a tokamak by the perpendicular injection of a pulsed neutral beam into the plasm a is analysed. The method is based on the measurement of the toroidal precession velocity of the ion population thus formed. The toroidal dr ift is caused by the curvature of the magnetic field lines and by the electric field. For the separation of these two effects, the use of a beam with two energy fractions is studied. The application of this dia gnostic scheme in a real tokamak is considered.