Thermal event recognition applied to tokamak protection during plasma operation

Vincent Martin, Francois Bremond, Jean-Marcel Travere, Victor Moncada, Gwenael Dunand
2009 2009 IEEE Intrumentation and Measurement Technology Conference  
Magnetic confinement fusion reactors are complex devices where a large amount of energy is required to make the fusion reactions happen. In such experimental conditions, the Plasma Facing Components (PFC) are subjected to high heat fluxes. In current tokamaks like Tore Supra, infrared thermographic diagnostics based on image analysis and feedback control are used to measure and monitor the heating of the PFC during plasma operation. The system consists in detecting high increase of the IR
more » ... ase of the IR luminance signal beyond fixed temperature thresholds for a set of predefined Regions of Interest (ROI). Consequently, this system neither takes into account the thermal objects outside of the ROI, nor the geometric information of the detected thermal object. In this paper, we propose a new visionbased approach for the automatic detection of thermal events. This approach is composed of three main tasks: thermal object detection (1), classification (2), and thermal event recognition (3). We present results of our approach for the recognition of one critical thermal event and compare it with the previous system.
doi:10.1109/imtc.2009.5168728 fatcat:573nkholsbhrddhcft6aagedyi