https://argonne.zoomgov.com/j/1610546574?pwd=OWF4aEp4R1EzV0VGdXBTdldXMHZjUT09
Abstract:
One of the most significant changes ATLAS has made to its hadronic object reconstruction during Run 2 has been the migration to particle-flow algorithms that incorporate both inner detector and calorimeter signals. Tracks inside jets have become crucial for pile-up mitigation, jet energy scale calibration, improved jet substructure reconstruction for boosted objects, and have enabled precision measurements of JSS observables. Future collider experiments will also rely heavily on tracking detectors to achieve their physics goals, which will require the development of novel, radiation-hard silicon sensors. In this talk, I will first review the latest precision measurements of jet substructure made with inner-detector signals that have provided a clearer understanding of QCD effects within jets. Then, I will present the first results from lab and testbeam measurements of MALTA2 sensors, which are Depleted Monolithic Active Pixel Sensors (DMAPS) in the 180 nm TowerJazz CMOS imaging technology. These sensors have been developed to be radiation-hard at 10^15 1 MeV neq/cm^2 NIEL, sufficient for conditions similar to those in the outer layer of the upgraded ATLAS Inner Tracker (ITk) at the HL-LHC.