Köln 2025 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 4: Instrumentation I

HK 4.1: Gruppenbericht

Montag, 10. März 2025, 15:00–15:30, SR Exp1A Chemie

The MAGIX Experiment at MESA — •Sebastian Stengel for the MAGIX collaboration — Institute for Nuclear Physics, Johannes Gutenberg University Mainz, Germany

At the new high-intensity, low-energy electron accelerator MESA, the multi-purpose MAGIX setup will be used for high-precision scattering experiments including dark sector searches, the study of hadron structure and few-body systems, as well as investigations of reactions relevant to nuclear astrophysics.

The MAGIX experiment features a fully windowless scattering chamber housing an internal gas jet target that can be operated with a variety of different gases, two high-precision magnetic spectrometers, and sophisticated detector systems positioned at the spectrometers' focal planes. This setup, combined with MESA's high-intensity electron beam, allows for an exceptionally clean experimental environment, in which effects like multiple scattering or energy straggling are drastically reduced.

The focal plane detectors include a tracking detector realized by a time projection chamber, and a trigger veto system built from plastic scintillation detectors and passive lead absorbers. Moreover, a recoil detector system based on silicon strip detectors can be installed inside the scattering chamber to detect nuclear recoil particles in addition to the scattered electrons.

The present contribution outlines the physics program at MAGIX and provides an overview on the sophisticated setup of the versatile MAGIX experiment.

Keywords: electron scattering; gas jet target; magnetic spectrometers; nuclear and hadron physics; dark sector searches