Quantitative shadowgraphy and proton radiography for large intensity modulations

Area of Science:

• Physics and Engineering Diagnostics
• Optical Imaging Techniques

Background:

• Shadowgraphy is a common diagnostic technique in physics and engineering.
• Quantitative analysis of shadowgrams is difficult due to the process's nonlinear nature.

Purpose of the Study:

• To develop a computational geometry-based method for retrieving quantitative information from shadowgrams.
• To apply and validate this method for diagnosing objects and fields, including in proton radiography.

Main Methods:

• Utilizing computational geometry principles to process shadowgram data.
• Benchmarking the method with a toroidal magnetic field and other objects.
• Applying simple pre- and postprocessing for experimental data.

Main Results:

• Accurate retrieval of quantitative parameters from shadowgrams.
• Achieved error bars below 10%, even in the presence of caustics.
• Demonstrated robustness with real experimental data.

Conclusions:

• The developed method provides a powerful tool for quantitative analysis in shadowgraphy and proton radiography.
• This technique enhances diagnostic capabilities in various physics and engineering fields.
• The method is robust and applicable to real-world experimental scenarios.