A performance test has been made for an electro-magnetic calorimeter prototype comprised four identical BSO crystals arranged in a 2×2 matrix by utilizing a positron beam in the energy range from 100 to 800 MeV. The size of each crystal is 40×40×210 mm 3. This is the worlds largest BSO single crystal ever used as a photon detector. The obtained energy resolution is ( σE/E) 2=((1.71%±0.03%)/E) 2(1.12%±0.08%) 2 at room temperature, where E is the incident positron energy given in GeV. A BGO calorimeter having the same geometry has been employed in the performance test for comparison. The basic scintillation characteristics of BSO crystals measured without the beam are also presented.
|Number of pages||13|
|Journal||Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment|
|Publication status||Published - 2012 Dec 1|
- Bismuth silicate
- EM calorimeter
ASJC Scopus subject areas
- Nuclear and High Energy Physics