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Updated: Dec 19, 2025

Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
Design of optimal digital filter and digital signal processing for a CdZnTe high resolution gamma-ray system
1Ionizing Radiation Center, Korea Research Institute of Standards and Science (KRISS), Daejeon, 34113, Republic of Korea; University of Science & Technology (UST), Daejeon, 34113, Republic of Korea.
Abstract:
We have developed an online digital signal processing system based on an FPGA. The system consists of pile-up rejection, baseline restorer, peak detection and pole-zero cancellation for evaluation of deposited energy in the detector. The shaping algorithm employed is a Moving Window Deconvolution (MWD) to shape digitized data into a trapezoidal form. For the purpose of verification, the developed digital system was tested for 137Cs gamma rays. The entire system is programmed using the LabVIEW environment.
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