Lead-scintillator Electromagnetic Calorimeter with Stereo Readout
Conference
Minehart, R, Amaryan, M, Beard, K et al. (1990). Lead-scintillator Electromagnetic Calorimeter with Stereo Readout
. 682-686. 10.1109/NSSMIC.1990.693434
Minehart, R, Amaryan, M, Beard, K et al. (1990). Lead-scintillator Electromagnetic Calorimeter with Stereo Readout
. 682-686. 10.1109/NSSMIC.1990.693434
We describe an electromagnetic calorimeter consisting of 39 layers of 1 cm thick plastic scintillators alternating with 2 mm thick layers of lead. The calorimeter has a triangular shape with sides 127 cm long. Each scintillation layer is made of 11 scintillators, 10 cm wide, placed parallel to one edge of the triangle, with scintillators in successive layers parallel to successive edges of the triangle. The calorimeter is divided into front (15 layers) and rear (24 layers) sections to improve electron/pion discrimination. Light emerging from one end of each scintillator is absorbed in a wavelength shifter strip placed perpendicular to the scintillator. Reemitted light from the waveshifter is detected by a photomultiplier tube. The device has been tested with a beam of pions and electrons with energies of 1,2,3 and 4 GeV. The average measured energy resolution for electrons was 9.3% √E(GeV). Efficiencies for identification of electrons and rejection of pions are discussed.
