Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 18: DAQ / Trigger I

T 18.8: Talk

Monday, March 19, 2018, 17:45–18:00, Z6 - SR 2.010

Readout system for the P2 tracking detector — •Carsten Grzesik for the P2 collaboration — Institute for Nuclear Physics, Johannes Gutenberg University, Mainz — PRISMA Cluster of Excellence

The P2 experiment at the Institute for Nuclear Physics in Mainz is designed to measure the weak mixing angle at low momentum transfer. Therefore the parity violating asymmetry in electron-proton scattering needs to be determined with very high precision. This will be possible at the new Mainz Energy Recovering Superconducting Accelerator (MESA) with its 150 µA beam of polarized electrons.

Integrating Cherenkov detectors are used for measuring the asymmetry and the scattering kinematics are monitored by a tracking system based on silicon pixel detectors. For the tracking detector High Monolithic Active Pixel Sensors (HV-MAPS) are used, which provide a zero-suppressed, full digital readout. The high rate of particles passing the detector and the fine granularity of the tracking detector results in a high data rate in the triggerless readout system.

In this talk a first readout concept for the P2 tracking detector, which is based on field-programmable gate arrays (FPGAs) for merging, sorting and filtering the data of the multiple detector parts and networked by multiple Gbit/s optical links, is presented.