Göttingen 2025 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 5: Silicon Detectors I (ATLAS + CMS)

T 5.4: Vortrag

Montag, 31. März 2025, 17:30–17:45, VG 0.111

ITk Pixel DCS: Pixel System Monitoring Readout — •Anne Gaa and Stan Lai — Friedrich-Hund Platz 1, 37077 Goettingen

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 MOPS-Hub is the bidirectional interface between the local DCS station and the MOPS chips. The MOPS chips are connected via CAN buses to an FPGA, which sends the monitored data over an OPC UA server to the local DCS control station. Testing sites for the Outer Barrel local supports, as well as the OB demonstrator will use the next iteration of the MOPS readout in the near future, featuring a new FPGA and a new OPC UA server. The OPC UA server will gain the functionality to read and write to the shared register on the FPGA via its device classes. As a first step, this server will be developed in the environment of a register simulation. This talk presents new developments of the MOPS readout.

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