Development of the detector readout for the ATLAS Phase II ITk pixel detector
by Wael Alkakhi
Date of Examination:2024-10-18
Date of issue:2025-01-23
Advisor:Prof. Dr. Arnulf Quadt
Referee:Prof. Dr. Jochen Dingfelder
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Abstract
English
During the HL-LHC upgrade, a high luminosity upgrade takes place, where the instantaneous luminosity will reach 7.5 × 10^(34) cm^(−2)s^(−1) in Run 4. The current inner detector of the ATLAS experiment will be replaced by an all-silicon detector called the Inner Tracker (ITk). The ITk comprises a pixel detector surrounded by a strip detector. The pixel detector consists of five layers, with the first two layers forming the inner system and the last three layers forming the outer barrel and the endcap. Due to the large number of components, a database named the ITk production database (ITk PD) has been created to store and track information about ITk elements. The implementation of loaded local support elements in the ITk PD has been made, along with additional work to simplify the handling of these elements within the ITk PD. The basic read-out chain of the ATLAS ITk-Pixel DAQ system includes the YARR software communicating with the FELIX PCIe board, through an Optoboard, to the frontend chips RD53A and RD53B (ITkPix). This dissertation presents the implementation of the ITk production database related to loaded local supports. It then summarizes the main contributions to the development of the ITk-Pixel DAQ readout chain, which range from providing support for additional hardware platforms and/or front-end chips in the YARR laboratory readout setup to the validation of the scaledup YARR/FELIX/optoboard/ITkPix subsystem on a fully loaded local support. This marks an important milestone on the path to developing and testing the full-scale ITk-Pixel DAQ system.
Keywords: Pixel ITk; DAQ; Inner Tracker; YARR; Readout