Modules and Front-End Electronics Developments for the ATLAS ITk Strips Upgrade

Carlos García Argos

doi:10.1007/978-981-13-1316-5_66

Abstract

The ATLAS experiment is currently preparing for an upgrade of the tracking system in the course of the High Luminosity LHC, scheduled for 2024. The existing Inner Detector will be replaced by an all-silicon Inner Tracker (ITk) consisting of a pixel detector surrounded by a strip detector. The ITk strip detector consists of a four layer barrel and a forward region composed of six discs on each side of the barrel. The basic unit of the detector is the silicon-strip module, consisting of a sensor and one or more hybrid circuits that hold the read-out electronics. To account for the different geometries of the central and forward regions, the barrel and end-cap modules have different geometries. In the central region, the detectors are rectangular with straight strips, whereas in the forward region the modules require wedge shaped sensors with varying strip length and pitch. The current prototyping phase has resulted in the ITk Strip Detector Technical Design Report (TDR). In this contribution we present the current status of R&D of the ITk Strip Detector modules and read-out electronics.

Highlights

The ATLAS Experiment [1] will replace the Inner Detector by an all-silicon Inner Tracker, named ITk
We discuss some of the design choices and results on the current prototyping status of the strips detector modules, with emphasis on the Technical Design Report [2] published earlier this year
The ITk strips detector will consist of four barrel layers and six end-cap discs on each side of the barrel

Summary

Introduction

The ATLAS Experiment [1] will replace the Inner Detector by an all-silicon Inner Tracker, named ITk. The ATLAS Experiment [1] will replace the Inner Detector by an all-silicon Inner Tracker, named ITk This will allow ATLAS to cope with the High Luminosity LHC conditions: tenfold increase in pile-up and radiation with respect to the current LHC, for a maximum fluence of 1.2×1015 neq/cm and 50 MRad ionising dose. The strips detector will replace both the current Semiconductor Tracker (SCT) and the Transition Radiation Tracker (TRT). We discuss some of the design choices and results on the current prototyping status of the strips detector modules, with emphasis on the Technical Design Report [2] published earlier this year

The ATLAS ITk Strips Detector

Silicon Strips Modules

Front-end Electronics

Conclusions

Findings

ATLAS Collaboration