Deuterium in-vessel retention characterisation through the use of particle balance on Tore Supra

作者：Bucalossi J^*; Brosset C; Ngouri B; Tsitrone E; Dufour E; Eckedahl A; Geraud A; Goniche M; Gunn J; Loarer T; Monier Garbet P; Vallet J C; Vartanian S

来源：Journal of Nuclear Materials, 2007, 363: 759-763.

DOI：10.1016/j.jnucmat.2007.01.071

• particle balance
• deuterium inventory
• retention
• gas injection and fueling
• Tore Supra

Fuel retention inside plasma facing components will be a crucial issue not only in fusion reactors of the future, but also in ITER. The estimation of the fraction of the fuel which remains trapped inside the vessel is quite a difficult task. Particle balance analysis provides information for the whole vacuum chamber as a function of time and can be use to monitor the tritium in-vessel retention in real-time. On Tore Supra with a careful choice and position of pressure sensors, proper calibration procedures, the accuracy of the balance is around 10%. Particle balance analysis have been performed on many long pulse discharges and deuterium in-vessel retention has been found to be a constant around 5 x 10(20) D/s after several minutes of plasma. The evolution of the retention rate with plasma parameters indicates that deuterium bulk implantation and diffusion could dominate codeposition with carbon atoms. Particle balance is a powerful tool that should be implemented in ITER.

• 出版日期2007-6-15
• 单位中国地震局