Speaker
Description
The ATLAS Experiment is developing the new Inner Tracker (ITk), consisting of a pixel and strip detector, in preparation for the High-Luminosity LHC Upgrade. Essential parts of the ITk Pixel detector are the loaded local supports, which include the silicon pixel modules and associated services. The prototyping has 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 loaded local supports in the detector. An important part of the DCS is the Monitoring of Pixel System (MOPS), which carries out control and monitoring of the pixel modules, specifically the voltage drop in their serial powering chains and their temperature. Each serial powering chain of modules is connected to one MOPS chip which is installed on the services of the loaded local supports. 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. The bidirectional interface between the local DCS station and the MOPS chips is called the MOPS-hub. In the course of prototyping, the readout of the MOPS chips and the MOPS-hub was developed and validated. It was successfully operated on the prototype loaded local supports. This contribution will highlight the functionality of the MOPS-hub and the developed DCS system. Moreover, it will provide insight into the usage of the ITk Pixel MOPS-hub. This includes its role in the loaded local support readout and detector production, for purposes of both system tests and integration.
