Radiation Damage Simulation for the ATLAS Inner Tracker (ITk) System

ATLAS is one of four major experiments at the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN). Construction will begin soon on the ATLAS upgrade in preparation for the High Luminosity-LHC (HL-LHC) upgrade. The HL-LHC is expected to have significantly more integrated luminosity than the current LHC. For example, it will produce at least 15 million Higgs bosons per year, compared to around three million from the LHC in 2017.

The ATLAS upgrade will better withstand the radiation damage caused by higher luminosity. The inner detector receives the most radiation damage, and the upgraded detector (the ITk) will include radiation-hard 3D silicon sensors. This presentation will describe steps toward incorporating those 3D sensors in Monte Carlo simulation of future radiation damage to the upgraded ATLAS detector.