A GEM-based Time Projection Chamber for the AMADEUS experiment

TL;DR

This paper reports on the development and testing of a GEM-based Time Projection Chamber prototype designed for the AMADEUS experiment, aiming to improve particle tracking and vertex reconstruction in low-energy kaon interactions.

Contribution

It introduces a new GEM-based TPC prototype with successful beam tests, enhancing detection capabilities for the AMADEUS experiment.

Findings

High detector efficiency achieved

Good spatial resolution demonstrated

Effective operation at various gas gains and fields

Abstract

In this paper we present the R&D activity on a new GEM-based TPC prototype for AMADEUS, a new experimental proposal at the DA{\Phi}NE {\Phi}-factory at the Laboratori Nazionali di Frascati (INFN), aiming to perform measurements of the low-energy negative kaons interactions in nuclei. Such innovative detector will equip the inner part of the experiment in order to perfom a better reconstruction of the primary vertex and the secondary particles tracking. A 10x10 cm2 prototype with a drift gap up to 15 cm was realized and succesfully tested at the {\pi} M1 beam facility of the Paul Scherrer Institut (PSI) with low momentum hadrons. The measurements of the detector efficiency and spatial resolution have been performed. The results as a function of the gas gain, drift field, front-end electronic threshold and particle momentum are reported and discussed.