Bonn 2020 – scientific programme
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T: Fachverband Teilchenphysik
T 46: Detector systems III
T 46.2: Talk
Wednesday, April 1, 2020, 16:50–17:05, H-HS II
Tracking detector for the P2 experiment — •Carsten Grzesik for the P2 collaboration — Institut für Kernphysik, Mainz
The upcoming P2 experiment at the Institute for Nuclear Physics in Mainz aims to measure the parity violating asymmetry in elastic electron-proton scattering to determine the weak mixing angle. It will be performed at low momentum transfer Q2 and with high precision enabled by the new Mainz Energy Recovering Superconducting Accelerator (MESA).
For the measurement of the average Q2 a tracking detector utilizing High Voltage Monolithic Active Pixel Sensors (HV-MAPS) is installed, while the asymmetry measurement is conducted by integrating Cherenkov detectors. The high particle rate needed to reach the envisaged precision and large area at a low material budget pose challenges to the design of the tracking detector.
In this talk the current design for the tracking layers and testbeam results of HV-MAPS prototypes are presented. It focuses on high rate capabilities of the pixel sensors, the cooling and mechanical setup, as well as the data acquisition system for the P2 tracking detector.