Speaker
Alexey Dnestrovskiy
(Plasma Physics)
Description
Neutral Beam Current Drive (NBCD) is considered as an indispensable mechanism for a steady state regime in such contemporary projects as a tokamak based neutron source or a DEMO type thermonuclear reactor. In this report numerical calculations of NBCD with a Monte Carlo code NUBEAM are complemented by a semianalytical treatment of fast ion velocity distribution function. NBCD parameters were obtained for DEMO-FNS project varying the neutral beam injection geometry as well as the major radius of a device. Specific features of NBCD for a low aspect ratio configuration are illustrated by applying our approaches to Spherical Tokamak Neutron Source FNS-ST. A detailed comparison of numerical and semianalytical approaches is presented on the basis of ASTRA transport code provided equilibrium data for different plasma regimes.
Co-authors
Alexey Dnestrovskiy
(Plasma Physics, Kurchatov Institute, Moscow, Russian Federation)
Pavel Goncharov
(Peter the Great Saint Petersburg Polytechnic University, Saint Petersburg, Russian Federation)
