Author/Authors :
Balla، نويسنده , , A. and Bencivenni، نويسنده , , G. and Branchini، نويسنده , , P. and Budano، نويسنده , , A. and Capodiferro، نويسنده , , M. and Cerioni، نويسنده , , S. and Ciambrone، نويسنده , , Krzysztof P. and Czerwinski، نويسنده , , E. and De Lucia، نويسنده , , E. and de Robertis، نويسنده , , G. and Di Cicco، نويسنده , , A. and Di Domenico، نويسنده , , A. and Domenici، نويسنده , , D. and Dong، نويسنده , , J. and Fanizzi، نويسنده , , G. and Felici، نويسنده , , G. and Gatta، نويسنده , , M. and Lacalamita، نويسنده , , N. and Liuzzi، نويسنده , , R. and Loddo، نويسنده , , F. and Mongelli، نويسنده , , M. and Morello، نويسنده , , G. and Pelosi، نويسنده , , A. and Quintieri، نويسنده , , L. and Ranieri، نويسنده , , A. and Tshadadze، نويسنده , , E. and Valentino، نويسنده , , V.، نويسنده ,
Abstract :
The upgrade of the KLOE detector at DAFNE, the Φ -factory at the Laboratori Nazionali di Frascati, foresees the insertion of an Inner Tracker around the interaction region, composed of four layers with diameters from 26 cm to 41 cm and an active length of 70 cm. Each layer is realized as a cylindrical triple-GEM detector, a solution that allows to keep the total material of the Inner Tracker below 2% of a radiation length, which is of utmost importance to limit the multiple scattering of low-momentum tracks and to minimize dead spaces, thus maximizing the detectorʹs active area. The peculiar read-out pattern with X and V strips provides a spatial resolution of about 200 μ m and 400 μ m for azimuthal and longitudinal coordinates, respectively.
2 years, the construction of the Inner Tracker has been completed and the detector is ready to be inserted in the KLOE apparatus for a next data-taking run. The details of the manufacturing procedure as well as the results of validation tests are reported.
