Title :
A study on the use of lead fluoride for electromagnetic calorimetry
Author :
Woody, Craig L. ; Kierstead, J.A. ; Levy, P.W. ; Stoll, S. ; Weingarten, A.B. ; Anderson, D.F. ; Ramberg, E.J. ; Kuno, Y. ; Macdonald, J.A. ; Konaka, A. ; Hutcheon, D.A.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
fDate :
8/1/1993 12:00:00 AM
Abstract :
The properties of lead fluoride as a Cerenkov material for use in electromagnetic calorimetry were studied. A prototype calorimeter module consisting of a 5×5 array of 2.1-cm×2.1-cm×18.5-cm crystals was built and tested in a test beam. Results are given on energy resolution, shower size, and e/π separation for electrons and pions in the range of 1-4 GeV. The light output was found to give ⩾1000 photoelectrons per MeV in good quality crystals and to provide useful signals down to as low as 32 MeV. Measurements were made on radiation damage in lead fluoride using 60Co gamma rays and high energy ionizing particles, as well as on thermoluminescence after irradiation. It was found that only modest damage occurs up to a level of ~30 krad in large, calorimeter size crystals, and that the damage can be easily removed by optical bleaching
Keywords :
Cherenkov counters; calorimeters; electron detection and measurement; gamma-ray effects; ion beam effects; lead compounds; luminescence of inorganic solids; meson detection and measurement; thermoluminescence; 1 to 4 GeV; 30×103 rad; 32 MeV; Cerenkov material; PbF2; electromagnetic calorimetry; electron/pion separation; energy resolution; gamma rays; ionizing particles; light output; optical bleaching; shower size; thermoluminescence; Calorimetry; Crystalline materials; Crystals; Electrons; Energy measurement; Energy resolution; Mesons; Particle measurements; Prototypes; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
