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Design and evaluation of a FPGA-ADC prototype for the PET detector based on LYSO Crystals and SiPM arrays
- Publication Year :
- 2021
-
Abstract
- The aim of this study is to design and evaluate a simple free running Analog-Digital Converter (ADC) based on the Field Programmable Gate Array (FPGA) device to accomplish the energy and position readout of the silicon photomultiplier (SiPM) array for application as PET scanners. This simple FPGA-ADC based on a carry chain Time-Digital Converter (TDC) implemented on a Kintex-7 FPGA consists of only one off-chip resistor so it has greater advantages in improving system integration and reducing cost than commercial chips. In this paper, a FPGA-ADC based front-end electronics prototype is presented, and both the design principle and implementation considerations are discussed. Experiments were performed using an 8 x 8 (crystal size: 4 x 4 x 15 mm3 ) and a 12 x 12 (crystal size: 2.65 x2.65 x 15 mm3 ) segmented LYSO crystals coupled with an 8 x 8 SiPM (Jseries, from ON Semiconductor) array which is under 22Na point source excitation. Initial test results indicate that the energy resolution of the two detectors after correction is around 13.2% and 13.5 % at 511 keV, and the profiles of the flood histograms show a clear visualization of the discrete scintillator element. All measurements were carried out at room temperature (~25 degree), without additional cooling<br />9 pages,14 figures
- Subjects :
- Materials science
Physics - Instrumentation and Detectors
business.industry
Detector
FOS: Physical sciences
Instrumentation and Detectors (physics.ins-det)
Scintillator
Atomic and Molecular Physics, and Optics
Lyso
law.invention
Silicon photomultiplier
law
Optoelectronics
Radiology, Nuclear Medicine and imaging
Electronics
Resistor
Field-programmable gate array
business
Instrumentation
Energy (signal processing)
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....05611416f860c9f225a4d6671d908716