Setting of the ATLAS Jet Energy Scale

The setting of the jet energy scale in the ATLAS detector is presented. After a brief introduction of the ATLAS calorimeter and the jet reconstruction algorithms used in ATLAS, the terms in the jet energy scale determination are described. Emphasis is given to the differing approaches for the setting of the calorimeter energy scale. The current approach used for analysis is highlighted and results from early collision data are presented. The current jet energy scale for inclusive jets with a transverse momentum of 100 GeV, is determined with an uncertainty of 6-7%.