Operation and performance of the ATLAS semiconductor tracker in LHC Run 2


Aad G., Abbott B., Abbott D., Abud A. A., Abeling K., Abhayasinghe D., ...More

Journal of Instrumentation, vol.17, no.1, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 17 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1088/1748-0221/17/01/p01013
  • Journal Name: Journal of Instrumentation
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Index Islamicus, INSPEC
  • Keywords: Charge transport and multiplication in solid media, Particle tracking detectors (Solid-state detectors), Radiation damage to detector materials (solid state), Solid state detectors, SILICON, DETECTORS, SYSTEM
  • Istanbul University Affiliated: Yes

Abstract

© 2022 CERNüäβThe semiconductor tracker (SCT) is one of the tracking systems for charged particles in the ATLAS detector. It consists of 4088 silicon strip sensor modules. During Run 2 (2015-2018) the Large Hadron Collider delivered an integrated luminosity of 156 fb−1 to the ATLAS experiment at a centre-of-mass proton-proton collision energy of 13 TeV. The instantaneous luminosity and pile-up conditions were far in excess of those assumed in the original design of the SCT detector. Due to improvements to the data acquisition system, the SCT operated stably throughout Run 2. It was available for 99.9% of the integrated luminosity and achieved a data-quality efficiency of 99.85%. Detailed studies have been made of the leakage current in SCT modules and the evolution of the full depletion voltage, which are used to study the impact of radiation damage to the modules.