Measurement of the Inelastic Proton-Proton Cross Section with the ATLAS Detector

A measurement of the inelastic cross-section for proton-proton collisions at centre-of-mass energysqrt(s) = 7 TeV using the ATLAS detector at the Large Hadron Collider are presented. Events are selected by requiring hits on scintillator counters mounted in the forward region of the ATLAS detector with a dataset corresponding to an integrated luminosity of 20 ub^-1. In addition, an inelastic cross-section calculated from measurement of a rapidity gap cross-section at energy sqrt(s) = 7 TeV are presented.