Title :
Response of a PbWO4-scintillator array to electrons in the energy regime below 1 GeV
Author :
Novotny, R. ; Döring, W. ; Mengel, K. ; Metag, V. ; Pienne, C.
Author_Institution :
II. Phys. Inst., Giessen Univ., Germany
fDate :
6/1/1997 12:00:00 AM
Abstract :
PbWO4 has been selected as the most appropriate scintillator material for future calorimeter projects at LHC to detect high energy photons in the multiple GeV range. In spite of the low yield of scintillation light, the applicability of the scintillator to detect photons and particles at energies well below 1 GeV has been studied using monoenergetic electrons between 180 and 855 MeV. The individual crystals (20×20×150 mm3) are characterized by the optical quality and the response to low energy γ-sources using hybrid photo diode tubes. The energy resolution of the EM-shower deposited by electrons in a 3×3 crystal matrix amounts to σ/E=2.39%/√E+0.20% (E given in GeV). The obtained time resolution of σ⩽130 ps allows photon/particle discrimination via time-of-flight measurement
Keywords :
calorimetry; electron detection; position sensitive particle detectors; solid scintillation detectors; 150 mm; 180 to 855 MeV; 20 mm; 340 to 500 nm; EM-shower; LHC; PbWO4; PbWO4-scintillator array; calorimeter projects; electrons; high energy photons; hybrid photodiode tubes; low energy γ-sources; monoenergetic electrons; optical quality; photon/particle discrimination; scintillation light; scintillator material; time resolution; time-of-flight measurement; Crystals; Electrons; Energy measurement; Energy resolution; Luminescence; Position measurement; Radiation detectors; Testing; Thickness measurement; Wavelength measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
