Title :
Researches of the Digital Timing Spectrometer based on DSP builder and FPGA
Author :
Yadan Zeng ; Yuying Li ; Hao Liang
Author_Institution :
Dept. of Modern Phys., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
A digital real time spectrometer based on the technology of digital pulse processing has been developed. Based on digital signal processor builder (DSP builder) and Field Programmable Gate Array (FPGA), we realize the digital constant fraction discrimination (dCFD) algorithm part of spectrometer only in FPGA, which will simplify the circuit. A digital 22Na positron annihilation spectrometer was established to test the system performance. The amplitude and time information of γ photon was obtained online. Both the resolution of energy and time are higher than the conventional CFD spectrometer by a value of 3.90% and 157.6ps respectively.
Keywords :
field programmable gate arrays; gamma-ray detection; gamma-ray spectrometers; positron annihilation; CFD spectrometer; DSP builder; FPGA; digital 22Na positron annihilation spectrometer; digital constant fraction discrimination algorithm; digital pulse processing technology; digital signal processor builder; digital timing spectrometer; energy resolution; field programmable gate array; gamma photon; system performance; time information; time resolution; Algorithm design and analysis; Digital signal processing; Energy resolution; Field programmable gate arrays; Interpolation; Signal processing algorithms; Time measurement;
Conference_Titel :
Real Time Conference (RT), 2014 19th IEEE-NPSS
Print_ISBN :
978-1-4799-3658-8
DOI :
10.1109/RTC.2014.7097524
