Cathodoluminescent screen imaging system for seeded blob detection in toroidal plasma experiment

Area of Science:

• Plasma Physics
• Diagnostic Techniques
• Optical Imaging

Background:

• Turbulent plasma structures are crucial in various physical phenomena.
• High spatial resolution diagnostics are needed to understand these structures.
• Existing methods may lack the required resolution or speed.

Purpose of the Study:

• To develop and validate a novel diagnostic for detecting turbulent plasma structures.
• To achieve high spatial resolution in plasma diagnostics.
• To enable the study of dynamic plasma phenomena.

Main Methods:

• Design and construction of a diagnostic system utilizing a cathodoluminescent screen.
• Coating the screen with a low-threshold energy cathodoluminescent powder.
• Imaging emitted light using a fast frame camera, image intensifier, and optical bandpass filter.
• Analysis of data with pattern recognition algorithms.

Main Results:

• Successful detection of turbulent plasma structures with high spatial resolution.
• Demonstration of the diagnostic's capability to study seeded blobs.
• Tracking of turbulent structures and analysis of their temporal evolution.

Conclusions:

• The developed cathodoluminescent diagnostic is effective for high-resolution studies of turbulent plasma.
• The diagnostic provides valuable insights into plasma dynamics and structure evolution.
• This tool advances the field of plasma diagnostics and research.