Würzburg 2018 – scientific programme

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T: Fachverband Teilchenphysik

T 25: Silizium-Streifen-Detektoren II / Pixel-Detektoren

T 25.6: Talk

Tuesday, March 20, 2018, 17:45–18:00, Philo-HS2

Simulation Studies on the Robustness of the ATLAS Pixel Detector for the HL-LHC — •Timo Dreyer, Stan Lai, and Jason Veatch — II. Physikalisches Institut, Georg-August-Universität Göttingen

In mid-2026, the LHC will start the high luminosity phase (HL-LHC), during which more than 3000 fb⁻¹ of p-p collision data is expected. In addition to the physics benefits of the increased amount of data, new technical challenges will arise. These include an increased amount of pileup in the collison events and exposure of the detector components to larger radiation doses.

To face these challenges, the ATLAS experiment will undergo a major upgrade during the LHC shutdown period from 2024 to mid-2026, that will precede the HL-LHC phase. The current inner detector will be completely replaced by a new silicon based inner tracker (ITk) consisting of an inner pixel detector and an outer silicon strip detector.

This talk presents studies performed to evaluate the robustness of the planned ITk pixel detector under conditions where sub-components are defective. The methodology for masking pixel modules and channels is introduced and comparisons between the expected performance under different failure modes are presented.