Expected tracking performance of the ATLAS Inner Tracker at the High-Luminosity LHC


Aad G., Abbott B., Abbott D., Abed Abud A., Abeling K., Abhayasinghe D., ...Daha Fazla

Journal of Instrumentation, cilt.20, sa.2, 2025 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 20 Sayı: 2
  • Basım Tarihi: 2025
  • Doi Numarası: 10.1088/1748-0221/20/02/p02018
  • Dergi Adı: Journal of Instrumentation
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, Index Islamicus, INSPEC
  • Anahtar Kelimeler: calibration, cluster finding, fitting methods, Gaseous imaging and tracking detectors, Particle tracking detectors (Solid-state detectors), Pattern recognition, Vertexing algorithms
  • Ankara Üniversitesi Adresli: Evet

Özet

The high-luminosity phase of LHC operations (HL-LHC), will feature a large increase in simultaneous proton-proton interactions per bunch crossing up to 200, compared with a typical leveling target of 64 in Run 3. Such an increase will create a very challenging environment in which to perform charged particle trajectory reconstruction, a task crucial for the success of the ATLAS physics program, and will exceed the capabilities of the current ATLAS Inner Detector (ID). A new all-silicon Inner Tracker (ITk) will replace the current ID in time for the start of the HL-LHC. To ensure successful use of the ITk capabilities in Run 4 and beyond, the ATLAS tracking software has been successfully adapted to achieve state-of-the-art track reconstruction in challenging high-luminosity conditions with the ITk detector. This paper presents the expected tracking performance of the ATLAS ITk based on the latest available developments since the ITk technical design reports.