Title :
Performance Simulation Studies of the Clear-PEM DAQ/Trigger System
Author :
Bento, Pedro ; Goncalves, Fernando ; Leong, C. ; Lousa, Pedro ; Joao Nobre ; Rego, J. ; Relvas, Paulo ; Rodrigues, P. ; Silva, J.C. ; Silva, Leandro ; Teixeira, I.C. ; Teixeira, J.P. ; Trindade, A. ; Varela, Jesus
Author_Institution :
INESC, Lisbon
Abstract :
The Clear-PEM detector is a positron emission mammography scanner based on a high-granularity avalanche photodiode readout with 12 288 channels. The front-end sub-system is instrumented with low-noise 192:2 channel amplifier-multiplexer ASICs and free-running sampling ADCs. The off-detector trigger, implemented in a FPGA based architecture, computes the pulses amplitude and timing required for coincidence validation from the front-end data streams. A high-level C++ simulation tool was developed for data acquisition performance analysis and validated at bit-level against FPGA VHDL testbenches. In this work, simulation studies concerning the performance of the on-line/off-line energy and time extraction algorithms and the foreseen detector energy and time resolution are presented. Time calibration and trigger efficiency are also discussed
Keywords :
C++ language; amplifiers; analogue-digital conversion; application specific integrated circuits; avalanche photodiodes; data acquisition; field programmable gate arrays; hardware description languages; mammography; medical diagnostic computing; multiplexing equipment; nuclear electronics; positron emission tomography; pulse analysers; readout electronics; Clear-PEM detector; DAQ system; FPGA VHDL testbenches; PET; amplifier-multiplexer ASICs; data acquisition performance analysis; field programmable gate arrays; free-running sampling ADCs; front-end data streams; front-end subsystem; high-granularity avalanche photodiode readout; high-level C++ simulation tool; off-detector trigger; positron emission mammography scanner; pulse amplitude; pulse analysis; time extraction algorithms; time resolution; trigger efficiency; Avalanche photodiodes; Computational modeling; Data acquisition; Detectors; Field programmable gate arrays; Instruments; Low-noise amplifiers; Mammography; Pulse amplifiers; Radioactive decay; Avalanche photodiodes; field programmable gate arrays; positron emission mammography; pulse analysis;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2006.876155
