An Energy-Resolved Photon-Counting Readout Electronics for Scintillator Based on Pole-Zero Compensation and ToT Method
- Resource Type
- Conference
- Authors
- Yue, Xiaobing; Liu, Canwen; Deng, Zhi
- Source
- 2019 IEEE Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC) Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2019 IEEE. :1-3 Oct, 2019
- Subject
- Bioengineering
Components, Circuits, Devices and Systems
Computing and Processing
General Topics for Engineers
Nuclear Engineering
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Signal Processing and Analysis
Detectors
Crystals
Photonics
X-ray imaging
Integrated circuit modeling
Scintillators
Readout electronics
High-Purity germanium detector
cryogenic electronics
MOSFET modeling
digital signal processing
pulse shape discrimination
- Language
- ISSN
- 2577-0829
This paper presents the development of an energy-resolved readout electronics for BGO and LYSO scintillator detectors for X-ray photon-counting imaging applications. The detector signal was modeled as an exponential decay waveform convoluted with the single photon response of SiPM detector. In order to achieve high counting rate, the detector signal was firstly processed by an active pole-zero compensation circuits. Then using the time-over-threshold (ToT) readout method, a time to digital converters (TDC) implemented in FPGA. Simulation and experimental results showed that the method can significantly shorten the pulse width. The spectrum measurement results showed that the signal from active Pole-Zero compensation circuit can almost retain the information of the original signal while the spectrum obtained by TOT method was badly distorted. The detailed analysis and test results will be presented in the paper.