Analysis and first order correction of signal saturation effects in photomultiplier tubes for improved estimation of interacting radiation energy in Lanthanum bromide scintillators
Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
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Analysis and first order correction of signal saturation effects in photomultiplier tubes for improved estimation of interacting radiation energy in Lanthanum bromide scintillators. / Blasi, Nives; Brambilla, Sergio; Boiano, Ciro; Camera, Franco; Camplani, A.; Crespi, Fabio C.L.; Giaz, Agnese; Million, Benedicte; Nicolini, Roberto; Pellegri, Luna; Riboldi, Stefano; Wieland, Oliver.
IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010. 2010. s. 1809-1812 5874087 (IEEE Nuclear Science Symposium Conference Record).Publikation: Bidrag til bog/antologi/rapport › Konferencebidrag i proceedings › Forskning › fagfællebedømt
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TY - GEN
T1 - Analysis and first order correction of signal saturation effects in photomultiplier tubes for improved estimation of interacting radiation energy in Lanthanum bromide scintillators
AU - Blasi, Nives
AU - Brambilla, Sergio
AU - Boiano, Ciro
AU - Camera, Franco
AU - Camplani, A.
AU - Crespi, Fabio C.L.
AU - Giaz, Agnese
AU - Million, Benedicte
AU - Nicolini, Roberto
AU - Pellegri, Luna
AU - Riboldi, Stefano
AU - Wieland, Oliver
PY - 2010
Y1 - 2010
N2 - The huge amount of optical photons emitted in burst by Cerium doped Lanthanum bromide scintillators poses a severe constraint on the specifications of photomultipliers, namely they must operate at very large instantaneous current values with minimum saturation of output pulse signals. Acquisition in shape and processing of photomultipliers output pulses by means of high-speed free-running analog to digital converters and processing devices allows specific correction for pulse saturation and distortion effects, due to high-gain tubes operated at relatively high power supply voltage. We analyze the effects of output signal saturation in photomultiplier tubes as a function of the high voltage level and the amount of energy released in the scintillator crystal, proposing a simple model to characterize this complex phenomenon. According to the proposed model, a preliminary first-order correction is calculated and applied to the energy estimations obtained by a traditional analog spectroscopy system, for energies up to 9 MeV, reducing the maximum estimation error by almost an order of magnitude.
AB - The huge amount of optical photons emitted in burst by Cerium doped Lanthanum bromide scintillators poses a severe constraint on the specifications of photomultipliers, namely they must operate at very large instantaneous current values with minimum saturation of output pulse signals. Acquisition in shape and processing of photomultipliers output pulses by means of high-speed free-running analog to digital converters and processing devices allows specific correction for pulse saturation and distortion effects, due to high-gain tubes operated at relatively high power supply voltage. We analyze the effects of output signal saturation in photomultiplier tubes as a function of the high voltage level and the amount of energy released in the scintillator crystal, proposing a simple model to characterize this complex phenomenon. According to the proposed model, a preliminary first-order correction is calculated and applied to the energy estimations obtained by a traditional analog spectroscopy system, for energies up to 9 MeV, reducing the maximum estimation error by almost an order of magnitude.
U2 - 10.1109/NSSMIC.2010.5874087
DO - 10.1109/NSSMIC.2010.5874087
M3 - Article in proceedings
AN - SCOPUS:79960290540
SN - 9781424491063
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1809
EP - 1812
BT - IEEE Nuclear Science Symposuim and Medical Imaging Conference, NSS/MIC 2010
T2 - 2010 IEEE Nuclear Science Symposium, Medical Imaging Conference, NSS/MIC 2010 and 17th International Workshop on Room-Temperature Semiconductor X-ray and Gamma-ray Detectors, RTSD 2010
Y2 - 30 October 2010 through 6 November 2010
ER -
ID: 309283334