Karlsruhe 2024 – scientific programme

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T: Fachverband Teilchenphysik

T 37: Silicon trackers 2

T 37.2: Talk

Tuesday, March 5, 2024, 16:15–16:30, Geb. 30.22: kl. HS B

ITk Pixel DCS: Pixel System Monitoring Readout — •Anne Gaa and Stan Lai — II. Physikalisches Institut, Georg-August-Universität Göttingen

The ATLAS experiment is developing the new Inner Tracker (ITk) in preparation for the High-Luminosity LHC Upgrade. The ITk pixel Outer Barrel demonstrator, as a system prototype, recently passed its final design review phase in preparation of the construction of the finished detector. The Detector Control System (DCS) is responsible for monitoring and controlling the detector and its sub-systems.

Part of the DCS is the readout chain of the Monitoring of Pixel System (MOPS), which provides an independent monitoring of the temperature and voltage of the front-end pixel modules. The MOPShub is the bidirectional interface between the local DCS station and the MOPS chips. Testing sites for the Outer Barrel local supports, as well as the OB demonstrator currently use MOPShub4beginners, a preliminary readout chain based on a RaspberryPi. The MOPS chips are connected via CAN buses to the RaspberryPi, which sends the monitored data over an OPC UA server to the local DCS control station. OPC UA is an cross-platform, open-source standard for data exchange. This talk presents new developments of the MOPShub.

Keywords: Detector Control System; Pixel System; OPC UA; WinCC OA; SCADA