Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 55: Data, AI, Computing, Electronics VI (DAQ and Trigger)
T 55.1: Vortrag
Mittwoch, 2. April 2025, 16:15–16:30, VG 2.102
Development of an FPGA-based DAQ system for the OBELIX sensor for the Belle II VTX upgrade — •Tobias Blesgen1, Maximilian Babeluk2, Christian Bespin1, Jochen Dingfelder1, Hans Krüger1, and Alexander Walsemann1 — 1University of Bonn, Physikalisches Institut, Nußallee 12, 53115 Bonn, Germany — 2Austrian Academy of Sciences, Institute of High Energy Physics, Nikolsdorfer G. 18, Vienna, Austria
To address the demands of higher luminosities at the Belle II experiment, a new vertex detector system featuring the monolithic OBELIX pixel sensor is currently under development. The large (3 cm x 2 cm) sensor area consists of over 400,000 pixels utilizing DMAPS technology. Alongside the OBELIX chip, a dedicated readout system for laboratory and beam tests is being designed and verified. The FPGA-based DAQ system builds upon the existing TJ-Monopix2 DAQ framework and has been adapted to include new features required to work with the OBELIX chip.
The FPGA is placed on the multi-purpose BDAQ board, originally developed for the RD53 readout for the upgrade of the ATLAS and CMS pixel detectors. TJ-Monopix2 and OBELIX exhibit the same command protocol as the RD53B chip while implementing a different hit data receiver logic to match the updated hit structure.
This talk presents the development process, key features and verification process of the data acquisition system.
Keywords: OBELIX; DAQ; Readout; FPGA; Verification