Design and Construction of a cylindrical GEM detector as the InnerTracker device of the KLOE-2 experiment

An InnerTrackeris under constructionforthe KLOE-2experimentattheDAΦNE collider. The tracker, based on GEM technology, will improve the vertex resolution near the interaction point, thanks to the good position resolution and thelow materialbudget. Here followsa descriptionof the detector and some measurements performed.