Evolution of Te and ne profiles during ECH and ECCD in TCV
The TCV tokamak has produced a wide variety of plasma configurations, both limited and diverted, with elongation's, ??in the range 0.9 to 2.58 and triangularities, ??from -0.7 to 1.0. Three gyrotons at 82.7 GHz and 0.5 MW each are presently installed and have been used in the second harmonic X-mode (X2) for the ECH and ECCD experiments described here. These sources are capable of a pulse length of 2 s, with the microwaves being delivered to the plasma by poloidally and toroidally steerable mirror systems for flexible power deposition and current drive. The implementation of another six gyrotons (a further three for X2 and three for X3 at 118 GHz) is in progress. The in-vessel graphite armour has recently been upgraded for high power ECH experiments, with new tiles on the central column and low-field-side wall of the vacuum vessel providing almost 90% internal surface coverage.
Bibliographic Reference: Article: 26th EPS Conference on Controlled Fusion and Plasma Physics, (1999)
Record Number: 199911073 / Last updated on: 1999-08-06
Original language: en
Available languages: en