Development of large area focal plane detectors for MAGIX

TL;DR

This paper discusses the development of large-area GEM-based detectors for the MAGIX experiment at MESA, focusing on design goals, prototype development, and ongoing improvements for precision track reconstruction.

Contribution

It introduces the design and development process of large-area GEM detectors tailored for the MAGIX experiment, highlighting prototype testing and optimization techniques.

Findings

Successful development of GEM prototypes meeting size and resolution goals

Implementation of SRS-based readout system for large-area detectors

Ongoing improvements in detector design and performance

Abstract

MAGIX is a planned experiment that will be implemented at the upcoming accelerator MESA in Mainz. Due to its location in the energy-recovering lane of the accelerator beam-currents up to 1mA with a maximum energy of 105 MeV will be available for precision experiments. MAGIX itself consists of a jet-target and two magnetic spectrometers. Inside the spectrometers GEM-based detectors will be used in the focal plane for track reconstruction. The design goals for the detector modules are a spatial resolution of 50 um, a size of 1.20 m x 0.3 m and a minimal material budget. To accomplish these goals we started developing several GEM-prototypes to study different behaviors and techniques to optimize the final detector design. The GEM foils used are provided by CERN and are trained, stretched and framed in our laboratory. The readout is done with an SRS based system. In this contribution the requirements, achievements and the ongoing developments are presented.