Bonn 2020 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Poster (a)

HK 51.34: Poster

Donnerstag, 2. April 2020, 16:30–18:30, Zelt

Development of detector read-out electronics for the P2 experiment at MESASebastian Baunack1, Michael Gericke3, Kathrin Imai1, •Rahima Krini1, Werner Lauth1, Frank Maas1,2, David Rodriguez Pineiro2, and Malte Wilfert11Institute for Nuclear Physics, Mainz, Germany — 2Helmholtz Institute Mainz, Germany — 3University of Manitoba, Canada

The Mainz Energy recovering Superconducting Accelerator (MESA) is being built at the Institute for Nuclear Physics in Mainz. At MESA the P2 experiment is planned for a precision measurement of the weak mixing angle. The upcoming measurement of MESA-P2 will be one of the most challenging and most precise experiments of a parity violating asymmetry in electron scattering of order 20·10−9 with a relative uncertainty of Δ APV/APV ≈ 2.41%.

The Cherenkov ring detector consist of fused silica bars equipped with photomultiplier tubes with high quantum efficiency. The challenge is to control the integrating detector signal chain and all sources of electronics noise within the whole experimental P2 set-up. The first prototype is developed and first tests at the MAMI accelerator were performed. This allows for a determination of the weak mixing angle with an accuracy of 0.15% and a test for new physics up to a mass scale of 49 TeV.

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