Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 56: Pixel-Detektoren II

T 56.10: Talk

Wednesday, March 21, 2018, 18:45–19:00, Z6 - HS 0.002

First measurements of the new readout ASIC for the ATLAS Inner Tracker: RD53A — •Michael Daas, Jochen Dingfelder, Tomasz Hemperek, Fabian Hügging, Hans Krüger, David-Leon Pohl, Mark Standke, Marco Vogt, and Norbert Wermes — Physikalisches Institut der Universität Bonn

The Large Hadron Collider (LHC) at CERN will be upgraded to deliver higher luminosities in 2025. This High-Luminosity LHC (HL-LHC) poses new demanding requirements for its detectors.

In this talk, first measurements of the RD53A pixel detector readout chip are shown. It was developed by the RD53 collaboration, a joint research and development initiative of the ATLAS and CMS experiments. As successor to the FE-I4, the RD53A readout chip features a smaller pixel pitch of 50× 50µ m, higher data rate capabilities and better radiation tolerance. This enables the chip to cope with the very high occupancy, that is expected close to the interaction points of the upgraded HL-LHC due to the higher luminosity.

The readout system BDAQ53 for this chip was developed in Bonn, based on chip simulations. When the chip arrived at the end of 2017, first measurements could be conducted right away. Since then, further steps towards a first characterization of the chip have been taken and are presented in this talk.