Title :
Properties of a very large volume LaBr3:Ce detector
Author :
Giaz, A. ; Pellegri, Luna ; Riboldi, S. ; Camera, F. ; Blasi, N. ; Boiano, C. ; Brambilla, S. ; Ceruti, S. ; Crespi, Fabio C. L. ; Csatlos, M. ; Gulyas, J. ; Krasznahorkay, A. ; Lodetti, S. ; Million, B. ; Stuhl, L. ; Wieland, O.
Author_Institution :
TNFN of Milan, Univ. of Milan, Milan, Italy
fDate :
Oct. 27 2012-Nov. 3 2012
Abstract :
LaBr3:Ce scintillators have excellent properties, such as energy resolution, time resolution and efficiency. However LaBr3:Ce performances have been investigated only for small or medium volume crystals. We investigated the properties of a large volume 3.5" × 8" LaBr3:Ce crystal and we compared them with those measured for smaller detectors. The 3.5" × 8" LaBr3:Ce crystal was coupled to a HAMAMATSU RI0233-100SEL photomultiplier and with a custom-made active voltage divider. In this work we have studied pulse lineshape, energy, and linearity in the energy range 5 keV (the average L shell binding energy) up to 22 MeV (from a (p,y) reaction). In addition the stability of energy estimation as a function of count rate (2 kHz - 250 kHz) was also measured.
Keywords :
binding energy; cerium; lanthanum compounds; nuclear electronics; photomultipliers; pulse shaping circuits; solid scintillation detectors; voltage dividers; HAMAMATSU RI0233-100SEL photomultiplier; L shell binding energy; LaBr3:Ce; LaBr3:Ce crystal scintillators; count rate function; custom-made active voltage divider; detector efficiency; electron volt energy 5 MeV to 22 MeV; energy resolution; frequency 2 kHz to 250 kHz; pulse lineshape; time resolution;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-2028-3
DOI :
10.1109/NSSMIC.2012.6551119
