Author/Authors :
Balatz، نويسنده , , M.Y. and Cooper، نويسنده , , P.S. and Davidenko، نويسنده , , G.V and Dolgolenko، نويسنده , , A.G. and Dzyubenko، نويسنده , , G.B. and Evdokimov، نويسنده , , A.V. and Giller، نويسنده , , I. and Goncharenko، نويسنده , , Y.M. and Kamenskii، نويسنده , , A.D. and Kubantsev، نويسنده , , M.A. and Kurshetsov، نويسنده , , V.F. and Lach، نويسنده , , J. M. Landsberg، نويسنده , , L.G. and Larin، نويسنده , , I.، نويسنده ,
Abstract :
A large-acceptance, highly segmented electromagnetic lead-glass calorimeter for Experiment E781 (SELEX) at Fermi National Acceleration Laboratory was designed and built. This detector has been used to reconstruct photons and electrons with energies ranging from a few GeV up to 500 GeV in the collisions of the 600 GeV Σ - hyperons, π mesons and protons with the target nucleons. The design, calibration and performance of the calorimeter are described. Energy resolution and position resolution are assessed using both calibration electron beams and π 0 mesons reconstructed in 600 GeV hadron–hadron interactions. The performance of the calorimeter in selecting resonant states that involve photons is demonstrated.
