A new Cylindrical-GEM Inner Tracker for the upgrade of the KLOE experiment

We present the new Inner Tracker detector for the upgrade of the KLOE apparatus at DAΦNE, the Frascati Φ-factory. The device is devoted to improve the vertex reconstruction performance for decays close to the Interaction Point. It is composed of 4 Gas Electron Multiplier (GEM) detectors, realized as very light cylinders with an innovative technique that allows to minimize the material budget inside the active area. We report about the construction and test of several prototypes.