Erlangen 2026 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 17: Instrumentation III

HK 17.1: Gruppenbericht

Dienstag, 17. März 2026, 16:15–16:45, PHIL A 301

The MAGIX Experiment at MESA — •David Markus — Institute for Nuclear Physics, Johannes Gutenberg University Mainz, Germany

At the new high-intensity, low-energy electron accelerator MESA, construction of the multi-purpose MAGIX experiment is in the final phases and preparations for the first physics run are underway. This first run with beam is planned to both provide a new more precise measurement of the transition form factor between the Hoyle state and the ground state of carbon-12 and to provide data to calibrate the new detectors, using a thin diamond foil as target.

In the future, MAGIX will use a gas jet target, which will be capable of operating with a variety of gases and enable a new frontier in high precision electron scattering experiments. Combined with MESA's high intensity electron beam and two high precision magnetic spectrometers, these experiments aim to contribute to the study of hadron structure and few-body systems, as well as investigations of reactions relevant to nuclear astrophysics and into the dark sector.

In the focal plane of the spectrometers, which are connected windowlessly to the scattering chamber, the two detector systems of MAGIX are installed, a time projection chamber for particle tracking and a trigger veto system combining plastic scintillation detectors and passive lead absorbers for particle identification and triggering.

This contribution outlines the physics program at MAGIX and provides an overview of both the setup of MAGIX and and the planned first physics experiment.

Keywords: electron scattering; magnetic spectrometers; gas jet target; nuclear and hadron physics; Holye State