Author/Authors :
Lee-Franzini، نويسنده , , Juliet and Antonelli، نويسنده , , A. and Antonelli، نويسنده , , M. and Barbiellini، نويسنده , , G. and Barone، نويسنده , , M. and Bertolucci، نويسنده , , S. and Bini، نويسنده , , C. and Bloise، نويسنده , , C. and Bolognesi، نويسنده , , V. and Bossi، نويسنده , , F. P. Campana، نويسنده , , P. and Cervelli، نويسنده , , F. and Caloi، نويسنده , , R. and Cordelli، نويسنده , , M. and De Zorzi، نويسنده , , G. and، نويسنده ,
Abstract :
A general purpose detector, KLOE, is under construction for operations at the Frascati φ factory, DAΦNE. Its central mission is the study of direct CP violation in K0 decays, which places very stringent requirements on electromagnetic shower measurements in the 20–280 MeV/c region. We have chosen to use a lead-scintillator sampling calorimeter, EmC, consisting of very thin (0.5 mm) lead layers in which are embedded 1 mm diameter scintillating fibers. Much prototyping and testing has been done during its design, yielding, for the final EmC, an expected energy resolution of σ(E)/E ∼ 4.4%/EGeV and a time resolution of ∼ 46ps/EGeV, with excellent linearity in the region of interest and with little dependence on incidence angle and entry position.
