Recent progress of the ATLAS Planar Pixel Sensor R&D Project
The ATLAS Planar Pixel Sensor R&D Project: M. Bomben, et. al

TL;DR
This paper reviews recent advances in planar pixel sensor technology for the ATLAS detector upgrade, focusing on high radiation tolerance, cost reduction, and improved edge designs to meet HL-LHC requirements.
Contribution
It presents new experimental results and simulations on irradiated sensors, edge optimization, and cost-effective sensor development for high-luminosity collider environments.
Findings
High radiation tolerance of planar sensors demonstrated
Successful development of slim/active edge designs
Cost reduction strategies for large-area sensors explored
Abstract
The foreseen luminosity upgrade for the LHC (a factor of 5-10 more in peak luminosity by 2021) poses serious constraints on the technology for the ATLAS tracker in this High Luminosity era (HL-LHC). In fact, such luminosity increase leads to increased occupancy and radiation damage of the tracking detectors. To investigate the suitability of pixel sensors using the proven planar technology for the upgraded tracker, the ATLAS Planar Pixel Sensor R&D Project was established comprising 17 institutes and more than 80 scientists. Main areas of research are the performance of planar pixel sensors at highest fluences, the exploration of possibilities for cost reduction to enable the instrumentation of large areas, the achievement of slim or active edge designs to provide low geometric inefficiencies without the need for shingling of modules and the investigation of the operation of highly…
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