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MeV X-ray imaging using plastic scintillating fiber area detectors: a simulation study.
Shi-Biao Tang1, Qingli Ma, Zejie Yin
1Department of Modern Physics, University of Science and Technology of China, 230026 Hefei, China. tangsb@mail.ustc.edu.cn
Summary
Plastic scintillating fibers (PSFs) show potential for hard X-ray imaging when enhanced with absorption layers. Monte Carlo simulations explored their use with charge-coupled devices (CCDs) for area detectors.
Area of Science:
- Nuclear Instrumentation and Detectors
- Medical Imaging Physics
Background:
- Plastic scintillating fibers (PSFs) are cost-effective, flexible, and suitable for data transmission, leading to their increased use in radiation detection and imaging.
- Existing detectors face challenges in cost and complexity for specific radiation detection applications.
Purpose of the Study:
- To investigate the feasibility of using plastic scintillating fibers (PSFs) coupled with charge-coupled devices (CCDs) for constructing area detectors.
- To evaluate the performance of PSF-based detectors for hard X-ray imaging, specifically in the energy range of a few hundred keV to approximately 20 MeV.
Main Methods:
- A Monte Carlo simulation approach was employed to model and analyze the performance of PSF-CCD systems.
- The study focused on simulating X-ray detection efficiencies and Modulation Transfer Function (MTF) for the proposed detector configuration.
- Investigated performance enhancement strategies, including coating PSFs with X-ray absorption layers.
Main Results:
- The intrinsic efficiency of PSFs for detecting X-rays in the high-energy range (few hundred keV to 20 MeV) was found to be low.
- Coating PSFs with X-ray absorption layers significantly improved detection performance.
- The Modulation Transfer Function (MTF) of the system was calculated and presented, indicating imaging capabilities.
Conclusions:
- It is feasible to develop area detectors using plastic scintillating fibers (PSFs) for hard X-ray imaging applications under specific environmental conditions.
- Enhancements, such as incorporating X-ray absorption layers, are crucial for optimizing the performance of PSF-based detectors in this energy spectrum.
