Erlangen 2026 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 35: Instrumentation VI
HK 35.4: Vortrag
Donnerstag, 19. März 2026, 14:45–15:00, PHIL A 301
Investigations of the integrating readout system of the P2 experiment at MESA — Sebastian Baunack1, Michael Gericke3, Boris Gläser1, Shruti Gudla1, Rahima Krini1, Frank Maas1,2,4, Jayanta Naik1, •Moran Neher1, Tobias Rimke1, Siddharth Thakker1, and Malte Wilfert1 — 1Institut für Kernphysik, Johannes Gutenberg-Universität Mainz — 2Helmholtz-Institut Mainz, Johannes Gutenberg-Universität Mainz — 3Department of Physics and Astronomy, University of Manitoba, Winnipeg, Canada — 4PRISMA Cluster of Excellence, Johannes Gutenberg-Universität Mainz
The P2 experiment aims for a high precision measurement of the weak mixing angle, a fundamental parameter of the Standard Model. The weak mixing angle will be extracted from the parity-violating asymmetry in elastic electron-proton scattering at low momentum transfer, with an expected raw asymmetry of Araw = 0.2403× 10−7. The central component of the detector system is an integrating Cherenkov ring detector, which measures the flux of scattered electrons. The flux depends on the helicity of the electron beam and gives rise to the production of Cherenkov light.
The detector modules consist of a photomultiplier tube, the P2 voltage divider and pre-amplifier and the P2 sampling ADC. In this presentation, the P2 experiment is introduced and the current status of the readout system is presented.
Keywords: P2; MESA; Photomultiplier; ADC; Asymmetry