Abstract
This note outlines the relevant details of the HIJetRec package for reconstructing jets in heavy ion events in ATLAS. This package primarily extends the standard jet reconstruction package by introducing a framework for subtracting the underlying event in heavy ion collisions and a framework for identifying and rejecting fake reconstructed jets.
The technical details of this framework, as well as other details about calibrations, anisotropic flow handling, and track extrapolation to the calorimeter are given. A short overview of the python steering is given.
The extension of the background subtraction use beyond heavy ion jet reconstruction is also discussed.