Quasi-Steady-State Improved Central Confinement in the TCV Tokamak with Electron Cyclotron Heating and current Drive
Current profile tailoring by Electron Cyclotron Heating (ECH) and Current Drive (ECCD) is used to improve core electron energy confinement in TCV. Counter-ECCD on-axis alone achieves this goal in a transient manner only. A stable scenario is obtained by a two-step sequence of off-axis ECH, which stabilizes MHD modes, and on-axis counter-ECCD, which generates a flat or inverted current profile. This high-confinement regime, with central temperatures up to 9 keV, has been sustained for the entire duration of the heating pulse, or over 200 energy confinement times.
Bibliographic Reference: Article: Physical Review Letters, (2000) LPR 667/00, 11pp.
Availability: Available from European Commission, DG XII Communication Unit rue de la Loi/Wetstraat 200, B-1049 Bruxelles (BE) Tel: +32-2-2950001 Fax:+32-2-2958220 email: firstname.lastname@example.org
ISBN: ISSN: 0458-5895
Record Number: 200012916 / Last updated on: 2000-12-18
Original language: en
Available languages: en