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In this work we report on the performance of the MA-PMT prototype, Hamamatsu H8500C-100 MOD 8, with reduced dynode stages (eight) and super bialkali photocathode (38% Q.E. @ 380 nm). This tube represents the latest technological advancement to improve energy and spatial resolution of gamma imagers. It is particularly suitable for applications involving new high light yield scintillators. To evaluate...
Hamamatsu has recently developed a new PMT, R7600U-200, with Ultra BiAlkali (UBA) photocathode (QE=42% @380 nm), replacing it in a BiAlkali (BA) PMT R7600U (QE=22% @380 nm). To evaluate the improvement in energy resolution, we coupled a LaBr3:Ce scintillation crystal, with size Ø12.5mm × 12.5 mm, to a UBA and to a BA R7600 PMT (22% Q.E.@ 380 nm). Moreover, the lanthanum crystal was coupled to a Hamamatsu...
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