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HK: Fachverband Physik der Hadronen und Kerne
HK 31: Instrumentation VII
HK 31.2: Vortrag
Mittwoch, 12. März 2025, 16:00–16:15, SR Exp1A Chemie
A Low-Material Time Projection Chamber for MAGIX — •Lucie Bister for the MAGIX collaboration — Institute for nuclear physics, Johannes Gutenberg University Mainz, Germany
The MAGIX experiment at the MESA accelerator in Mainz is designed for high-precision electron scattering experiments at low energies, covering nuclear structure investigations, astrophysics, and dark sector searches.
The setup consists of a windowless gas jet target, followed by two high-resolution magnetic spectrometers that focus the scattered electrons onto their focal plane. Due to the significant impact of background effects like multiple scattering at low energies, a low-material time projection chamber (TPC) has been developed to achieve a momentum resolution of Δ p/p < 10−4. In order to have no material in the particle path, an innovative open field-cage design has been developed, ensuring that the only material in the particles’ trajectory is a 75 µm thin Kapton foil. This design minimises the material budget and preserves track quality.
This talk will briefly introduce the MAGIX experiment with an emphasis on the low-material TPC, its design considerations, and the field-cage geometry that allows for accurate tracking with minimal material interference.
Keywords: Electron-Scattering; Magnetic Spectrometer; Gas-Jet-Target; Time Projection Chamber; MAGIX