Bonn 2020 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Poster (a)

HK 51.34: Poster

Thursday, April 2, 2020, 16:30–18:30, Zelt

Development of detector read-out electronics for the P2 experiment at MESA — Sebastian Baunack¹, Michael Gericke³, Kathrin Imai¹, •Rahima Krini¹, Werner Lauth¹, Frank Maas^1,2, David Rodriguez Pineiro², and Malte Wilfert¹ — ¹Institute 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 A^PV/A^PV ≈ 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.