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Plasma image edge detection based on the visible camera in the EAST device
Shuangbao Shu1, Chongyang Xu1, Meiwen Chen2
1School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Tunxi Road 193, Baohe District, Hefei, 230009 Anhui Province People's Republic of China.
Springerplus
|December 21, 2016
Summary
Accurate plasma control in Tokamak fusion devices relies on real-time imaging. This study details a visible camera system and an improved edge detection algorithm for precise plasma boundary and position acquisition on the Experimental Advanced Superconducting Tokamak (EAST).
Area of Science:
- Plasma physics
- Fusion energy research
- Tokamak engineering
Background:
- Precise control of plasma shape and position is critical for successful Tokamak operations.
- Real-time monitoring is essential for effective plasma control during discharge.
Purpose of the Study:
- To design and implement a real-time image acquisition system for capturing plasma radiation images.
- To develop and validate an accurate method for detecting plasma boundaries and determining spatial location.
Main Methods:
- A visible camera system with detailed hardware and software design was developed for the Experimental Advanced Superconducting Tokamak (EAST).
- Spatial location of the plasma was measured based on the EAST structure and observation window.
- An improved Sobel edge detection algorithm with iterative thresholding was employed for plasma boundary detection.
Main Results:
- The system successfully acquired real-time plasma radiation images during EAST discharge processes.
- The improved Sobel algorithm accurately detected the plasma boundary.
- High accuracy in acquired plasma position and boundary was achieved.
Conclusions:
- The developed real-time imaging system and edge detection algorithm are highly effective for EAST.
- Accurate plasma position and boundary data are crucial for enhancing plasma control in Tokamak devices.
