Flat Panel PMT for photon emission imaging

R. Pani, R. Pellegrini, M.N. Cinti, C. Trotta, G. Trotta, F. Garibaldi, R. Scafè, A. Del Guerra

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Abstract

Over the last 15 years Hamamatsu has been developed two generations of Position Sensitive Photomultipliers (PSPMTs). The first and the second generation were based on mesh dynode and metal channel dynode respectively. In this paper, we present the first results obtained from the last generation: Hamamatsu H8500 Flat Panel PSPMT. The active area is increased to 2in. with minimum peripheral dead zone and thickness down to 12.5 mm. Measurements were addressed to nuclear medicine for single photon imaging. To this aim, we have taken into account two different electronic readout: resistive chain and multi-anode readout (64 channels). To evaluate the imaging performance, the Flat Panel PSPMT was coupled to CsI(Tl) and NaI(Tl) scintillation arrays with pixel size of 3 and 2 mm, respectively. Images of CsI(Tl) array, obtained by multi-anode readout, showed an improvement of spatial resolution, from 1.2 to 0.8 mm, and of position linearity response. On the contrary for NaI(Tl) array, no relevant image differences between two system readout were obtained. © 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)590 - 594
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume505
Issue number1-2
DOIs
Publication statusPublished - 1 Jun 2003
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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