TY - GEN
T1 - Low-power Wide-dynamic-range readout system for a 64-channel multi-anode PMT of a scintillation gamma camera
AU - Kubo, H.
AU - Hattori, K.
AU - Ida, C.
AU - Iwaki, S.
AU - Kabuki, S.
AU - Kubo, S.
AU - Kurosawa, S.
AU - Miuchi, K.
AU - Nishimura, H.
AU - Okada, Y.
AU - Takada, A.
AU - Takahashi, M.
AU - Tanimori, T.
AU - Tsuchiya, K.
AU - Ueno, K.
PY - 2008
Y1 - 2008
N2 - We have developed a low-power wide-dynamicrange readout system for a 64-channel multi-anode photomultiplier (PMT) of a scintillation gamma camera. Each anode is individually read with the system that contains discrete devices of amplifiers, comparators, sample-hold ADCs, and FPGAs. The size of the system which is designed for a twodimensional array of Hamamatsu flat panel PMT 88500 is 5×5×14 cm3. The input dynamic range is variable by replacing the feedback capacitor of the preamplifier (e.g., 700 pC and 4000 pC for GSO(Ce) and LaBr3(Ce) crystals, respectively). The serialized ADC data are sent to a VME sequence module. The total power consumption is 1.6 W per 64 channels. With this system we have developed a gamma camera using an 8×8 array of GSO(Ce) pixels with a pixel size of 6×6×13 mm3 coupled to an H8500, and btained flood-field irradiation images at energies from 30 keV to 1.3 MeV. The energy resolution was 10.8±0.4% (FWHM) at 662 keV. In addition, we used the readout system for an 8×8 array of LaBr 3(Ce) pixels with a pixel size of 6×6×15 mm3 and obtained a flood-field irradiation image at 662 keV.
AB - We have developed a low-power wide-dynamicrange readout system for a 64-channel multi-anode photomultiplier (PMT) of a scintillation gamma camera. Each anode is individually read with the system that contains discrete devices of amplifiers, comparators, sample-hold ADCs, and FPGAs. The size of the system which is designed for a twodimensional array of Hamamatsu flat panel PMT 88500 is 5×5×14 cm3. The input dynamic range is variable by replacing the feedback capacitor of the preamplifier (e.g., 700 pC and 4000 pC for GSO(Ce) and LaBr3(Ce) crystals, respectively). The serialized ADC data are sent to a VME sequence module. The total power consumption is 1.6 W per 64 channels. With this system we have developed a gamma camera using an 8×8 array of GSO(Ce) pixels with a pixel size of 6×6×13 mm3 coupled to an H8500, and btained flood-field irradiation images at energies from 30 keV to 1.3 MeV. The energy resolution was 10.8±0.4% (FWHM) at 662 keV. In addition, we used the readout system for an 8×8 array of LaBr 3(Ce) pixels with a pixel size of 6×6×15 mm3 and obtained a flood-field irradiation image at 662 keV.
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U2 - 10.1109/NSSMIC.2008.4774613
DO - 10.1109/NSSMIC.2008.4774613
M3 - Conference contribution
AN - SCOPUS:67649160131
SN - 9781424427154
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 1181
EP - 1185
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 -