The response of a 5 cm × 20 cm BGO crystal to electrons in the 150 MeV to 700 MeV range

Abstract A shower detector consisting of two optically coupled BGO crystals, 5 × cm 2 each, was tested with an electron beam in the energy range from 150 to 700 MeV. The BGO resolution obtained for high-energy electromagnetic showers is found to be equivalent to that of NaI.