Effects of scintillation light collection on the time resolution of a time-of-flight detector for annihilation quanta

Author

Ziegler, Sibylle I. ; Ostertag, Hermann ; Kuebler, Wolfgang K. ; Lorenz, Walter J. ; Otten, Ernst W.

Author_Institution

Inst. fuer Radiol. & Pathophysiol., Deutsches Krebsforschungszentrum, Heidelberg, West Germany

Volume

37

Issue

2

fYear

1990

fDate

4/1/1990 12:00:00 AM

Firstpage

574

Lastpage

579

Abstract

Monte Carlo methods were used to simulate the production and collection of scintillation light in a BaF₂ crystal. The calculated results were compared to measured values for detectors with different heights. Based on this simulation, a TOF (time-of-flight) detector consisting of two conical BaF₂ crystals (base radius 18 mm, top radius 15 mm, height 25 mm) was assembled. The total time resolution of this system was (210±5) ps FWHM (full width at half maximum) for 511-keV annihilation quanta and was found to be independent of the source position between the detectors. Since the time resolution of the TOF detector system consisting of two conical BaF₂ crystals is sufficiently constant in the volume of interest and does not change during operation, this detector meets the requirements for application in a clinical routine

Keywords

Monte Carlo methods; barium compounds; gamma-ray detection and measurement; radioisotope scanning and imaging; scintillation counters; time of flight spectrometers; BaF₂ crystal; Monte Carlo methods; annihilation quanta; clinical routine; scintillation light collection; time resolution; time-of-flight detector; Cathodes; Gamma ray detection; Monte Carlo methods; Photomultipliers; Photonic crystals; Production; Shape measurement; Solid scintillation detectors; Spatial resolution; Time measurement;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.106679

Filename

106679