Title :
Position sensitivity of large volume LaBr3:Ce detectors
Author :
Birocchi, F. ; Blasi, N. ; Camera, F. ; Crespi, F.C.L. ; Boiano, C. ; Brambilla, S. ; Coniglio, F. ; Avigo, R. ; Millon, B. ; Riboldi, S. ; Wieland, O. ; Brosamer, J. ; Cinti, M.N. ; Pani, R. ; Fiorini, C. ; Marone, A.
Author_Institution :
INFN sez. di Milano, Univ. di Milano, Milan, Italy
fDate :
Oct. 24 2009-Nov. 1 2009
Abstract :
The position sensitivity of two large volume (1¿ × 1¿ and 3¿ × 3¿) LaBr3:Ce crystals has been measured using collimated beams of 662 keV ¿-rays. The crystals have been coupled to a Position Sensitive Photo Multiplier Tube (PSPMT) and/or shielded phototube. The results indicate that, in the case of 662 keV ¿ -rays, both crystals should allow identification of the the position of the ¿-ray first interaction with a 1-2 cm resolution. Similar tests have been done in the past using 140 keV ¿-rays and no sensitivity was found. Using GEANT4 simulations we confirmed these results.
Keywords :
Monte Carlo methods; gamma-ray detection; lanthanum compounds; photomultipliers; position sensitive particle detectors; solid scintillation detectors; GEANT4 simulations; LaBr3:Ce crystals; LaBr3:Ce; PSPMT; collimated gamma-rays; electron volt energy 662 keV; gamma-ray first interaction position; large volume solid scintillator detectors; position sensitive photomultiplier tube; position sensitivity; shielded phototube; size 1 inch; size 3 inch; Collimators; Coordinate measuring machines; Crystals; Energy measurement; Face detection; Gamma ray detection; Gamma ray detectors; Linearity; Medical simulation; Photoelectricity;
Conference_Titel :
Nuclear Science Symposium Conference Record (NSS/MIC), 2009 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3961-4
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2009.5402329
