To run Atlfast in FS mode use the AtlfastKOptions.txt, which in turn includes the AtlfastKStandardOptions.txt and AtlfastKDontTouch.txt.

In FS mode: jets: calibrated to the total ET of the particles entering a 0.4 cluster cone: ETjet = alpha(ET ,eta) * ET_ECal + beta(ET ,eta) * ET_HCal ; // ET = ET_ECal + ET_HCal

electrons & photons: as before smeared 4-momenta! selection parameters need to be studied (e.g. isolation).