A prototype diagnostics system to detect ultraviolet emission for plasma turbulence.

Area of Science:

• Plasma physics
• Optical diagnostics
• Spectroscopy

Background:

• High-temporal-resolution imaging of plasma turbulence is crucial for understanding plasma behavior.
• Existing diagnostic methods face challenges in electrically noisy plasma environments.
• Ultraviolet (UV) emissions contain valuable information about plasma properties.

Purpose of the Study:

• To develop and demonstrate a novel system for detecting UV emissions from plasma.
• To enable multi-point measurement for high-temporal-resolution imaging of plasma turbulence.
• To perform spectral analysis of UV emissions using a prototype system.

Main Methods:

• Utilizing fluorescent glass to convert UV emissions (approx. 540 nm visible light).
• Employing fiber optics for signal transfer to a noise-free location.
• Developing a system for converting fluorescent light to electrical signals.
• Conducting spectral analysis on a low-aspect-ratio reversed field pinch (RELAX) device.

Main Results:

• Successful prototype system for UV emission detection demonstrated.
• Fluorescent glass effectively converts UV to visible light for detection.
• System allows for signal acquisition in electrically noisy plasma environments.
• Spectral analysis of plasma emissions was successfully performed.

Conclusions:

• The developed system is a viable method for detecting UV emissions from plasma.
• The diagnostic approach enables high-temporal-resolution imaging of plasma turbulence.
• This technique offers a robust solution for spectral analysis in challenging plasma conditions.