Abstract
The first Tore Supra experiment dedicated to plasma detachment is reported. A criterion of detachment is deduced from bolometric measurements. This criterion is used to feedback control gas injection and maintain plasmas attached. Due to changes in plasma properties when detachment is approached, the feedback loop is unstable. Nevertheless, radiated power is maintained almost constant at 85% of the total injected power during ohmic discharges. Feedback control of gas injection on radiated power during ICRH discharges is reported. It allows to maintain high radiated power (up to 80% of the total injected 8 MW power) and to reduce conducted power on the ergodic divertor tiles with a plasma edge temperature maintained below 15 eV.
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