Fig. 8
From: Evaluation of the PETsys TOFPET2 ASIC in multi-channel coincidence experiments
Satellite peaks in the coincidence time difference spectra for different delay periods. Measurements were conducted with two KETEK PA3325-WB-0808 each coupled to an 8 × 8 12-mm-high LYSO scintillator array featuring 360 µm BaSO4 powder mixed with epoxy as segmentation layer. Data are collected at 4.75 V overvoltage and with vth_t1=10. A geometry of five NEMA cubes (22Na sources) with a total activity of approximately 3 MBq is employed. Red lines indicate the configured delay period [49, 62]. a Delay line bypassed. b 0.39 ns. c 2.95 ns. d 5.8 ns. e 8.4 ns. f 12.9 ns