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Titolo:
Evaluation of Hamamatsu R5900 series PMTs for readout of high-resolution scintillator arrays
Autore:
Shao, YP; Silverman, RW; Cherry, SR;
Indirizzi:
Univ Calif Los Angeles, Sch Med, Dept Mol & Med Pharmacol, Crump Inst BiolImaging, Los Angeles, CA 90095 USA Univ Calif Los Angeles Los Angeles CA USA 90095 Los Angeles, CA 90095 USA
Titolo Testata:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
fascicolo: 2-3, volume: 454, anno: 2000,
pagine: 379 - 388
SICI:
0168-9002(20001111)454:2-3<379:EOHRSP>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
POSITION-SENSITIVE PMT; MULTICHANNEL PMT; DETECTOR MODULE; PET DETECTOR; SCANNER;
Keywords:
multi-channel photomultiplier tube (MC-PMT); position-sensitive photomultiplier tube (PS-PMT); gamma-ray detector; scintillator; medical and biological imaging;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Shao, YP Univ Calif Los Angeles, Sch Med, Dept Mol & Med Pharmacol, Crump Inst BiolImaging, A 222 CIBI,700 Westwood Plaza, Los Angeles, CA 90095 USA Univ Calif Los Angeles A 222 CIBI,700 Westwood Plaza Los Angeles CA USA 90095
Citazione:
Y.P. Shao et al., "Evaluation of Hamamatsu R5900 series PMTs for readout of high-resolution scintillator arrays", NUCL INST A, 454(2-3), 2000, pp. 379-388

Abstract

Two types of Hamamatsu R5900 series photomultiplier tubes (PMTs) have beenevaluated as position-sensitive photon detectors for reading out arrays ofsmall scintillator elements. Both PMTs have metal-channel dynode structures and compact dimensions of 26 x 26 x 20 mm(3). Model R5900-C12 is a position sensitive PMT (PS-PMT) with photoelectrons shared among 12 plate anodes arranged in a crossed pattern such that there are six anodes each in the X and Y directions. Model R5900-M64 is a multi-channel PMT (MC-PMT) with 64 individual channels and low inter-channel crosstalk. Scintillator arrays canbe coupled to these PMTs either directly or by using optical fibers. In this paper, we present measurements of single photoelectron spectra, pulse linearity, positioning response, inter-channel gain variation and pixel-to-pixel crosstalk for these PMTs. We have also measured their positioning response in reading out high-resolution lutetium oxyorthosilicate (LSO) scintillator arrays. Across a sample of 30 R5900-M64 MC-PMTs which were manufactured recently, the maximum gain variation over all channels is less than 3:1, while the difference between any two adjacent channels is less than 2:1. With a tapered voltage divider, the output of the anode signal at a gain of 10(6) remains linear up to 200 photoelectrons for the R5900-M64. For the R5900-C12, the summed anode signal remains linear up to 400 photoelectrons when irradiated through a 2 mm diameter aperture. Images obtained with a Na-22source irradiating an array of 1 x 1 x 10 mm(3) LSO crystals coupled by anoptical fiber bundle to the R5900-C12 or the R590Q-M64 show excellent crystal identification. (C) 2000 Elsevier Science B.V. All rights reserved.

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Documento generato il 25/05/20 alle ore 01:43:30