TY - GEN
T1 - Improvement of energy resolution in geiger-mode APD arrays using curve-fitting of signal decay
AU - Weinberg, Irving N.
AU - Stepanov, Pavel Y.
AU - Weinberg, Arielle S.
AU - Abshire, Pamela
AU - Dandin, Marc
PY - 2008
Y1 - 2008
N2 - A method is presented to improve the energy resolution of scintillators read out with Geiger-mode avalanche photodiode arrays. The method employs digital signal processing, in which individual decay curves for gamma-ray detection events are digitized and then fitted to analytical functions whose amplitude provides energy information. Simulation studies suggest that after-pulses represent the largest source of energy resolution loss, which can be improved with curve-fitting. An experimental measurement confirmed that energy resolution could be improved with least-square curve-fits to a simple exponential model.
AB - A method is presented to improve the energy resolution of scintillators read out with Geiger-mode avalanche photodiode arrays. The method employs digital signal processing, in which individual decay curves for gamma-ray detection events are digitized and then fitted to analytical functions whose amplitude provides energy information. Simulation studies suggest that after-pulses represent the largest source of energy resolution loss, which can be improved with curve-fitting. An experimental measurement confirmed that energy resolution could be improved with least-square curve-fits to a simple exponential model.
UR - https://www.scopus.com/pages/publications/67649222232
U2 - 10.1109/NSSMIC.2008.4774680
DO - 10.1109/NSSMIC.2008.4774680
M3 - Conference contribution
AN - SCOPUS:67649222232
SN - 9781424427154
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1416
EP - 1418
BT - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
T2 - 2008 IEEE Nuclear Science Symposium Conference Record, NSS/MIC 2008
Y2 - 19 October 2008 through 25 October 2008
ER -