Abstract
An electromagnetic calorimeter, BGOegg, composed of 1320 BGO crystals, has been constructed at the Research Center for Electron Photon Science, Tohoku University to study the structure of hadrons in detail using photo-induced reactions. The design of the new electromagnetic calorimeter and the basic characteristics of the manufactured BGO crystals are described. A performance test has been conducted for the prototype, which consists of 25 crystals arranged in a 5×5 matrix, using positron beams at energies ranging from 100 to 800MeV. The obtained energy resolution is (σE/E)2=(0.63%)2+(1.15%±0.04%)2/(E/GeV)+(0.42%±0.03%)2/(E/GeV)2 at room temperature. The energy resolution corresponds to 1.38%±0.05% for 1-GeV positrons. The position resolution is found to be σr/mm=(3.07±0.03)(E/GeV)−0.202±0.008 which corresponds to an angular resolution of approximately 1° for 1-GeV positrons.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
