Online DAQ and slow control interface for the Mu2e experiment

Abstract

The Mu2e experiment at the Fermilab Muon Campus will search for the coherent neutrinoless conversion of a muon into an electron in the field of an aluminum nucleus with a sensitivity improvement by a factor of 10,000 over existing limits. The Mu2e Trigger and Data Acquisition System (TDAQ) uses otsdaq as the online Data Acquisition System (DAQ) solution. Developed at Fermilab, otsdaq integrates both the artdaq DAQ and the art analysis frameworks for event transfer, filtering, and processing. otsdaq is an online DAQ software suite with a focus on flexibility and scalability and provides a multi-user, web-based, interface accessible through a web browser. The data stream from the detector subsystems is read by a software filter algorithm that selects events which are combined with the data flux coming from a Cosmic Ray Veto System. The Detector Control System (DCS) has been developed using the Experimental Physics and Industrial Control System (EPICS) open source platform for monitoring, controlling, alarming, and archiving. The DCS System has been integrated into otsdaq. A prototype of the TDAQ and the DCS systems has been built at Fermilab's Feynman Computing Center. In this paper, we report on the progress of the integration of this prototype in the online otsdaq software.

Mu2e Crystal Calorimeter Readout Electronics: Design and Characterisation

“…Each DiRAC board employs a PolarFire rad-hard FPGA and allows one to digitise 20 calorimeter channels at 200 Msps via 12-bit Flash ADCs. A VTRX-based 10 Gsps optical link allows a data stream and slow control management with the Mu2e trigger and data acquisition system (TDAQ) [5]. Full signal digitisation allows one to better cope with the high expected pile-up rates.…”