Status of the Cylindical-GEM project for the KLOE-2 Inner Tracker

TL;DR

This paper reports on the development and testing of the Cylindrical-GEM detector as an inner tracker for the KLOE-2 experiment, including prototype construction, readout studies, and large-area foil technology characterization.

Contribution

It presents the progress in R&D activities for the Cylindrical-GEM detector, including prototype characterization and technological advancements for large-area GEM foils.

Findings

Successful construction and characterization of a full-size CGEM prototype.

Effective 2-D readout with XV patterned strips in magnetic fields.

Validation of single-mask GEM technology for large-area foils.

Abstract

The status of the R&D on the Cylindrical-GEM (CGEM) detector foreseen as Inner Tracker for KLOE-2, the upgrade of the KLOE experiment at the DAFNE phi-factory, will be presented. The R&D includes several activities: i) the construction and complete characterization of the full-size CGEM prototype, equipped with 650 microns pitch 1-D longitudinal strips; ii) the study of the 2-D readout with XV patterned strips and operation in magnetic field (up to 1.5T), performed with small planar prototypes in a dedicated test at the H4-SPS beam facility; iii) the characterization of the single-mask GEM technology for the realization of large-area GEM foils.