Betatron Halo Machine induced background for LHCb at 7 TeV

The physics performance of the LHCb experiment of the LHC will be affected by the experimental background conditions arising from the machine. In this note, calculations are presented ofthe betatron halo contribution at 7 TeV to the machine induced background, arising from betatron halo loss on the tertiary collimators in the experimental insertion. The resulting secondary particle cascade produces a stream of background particles into the LHCb cavern. The fluxes of particles are presented for beam 1 and beam 2 and the spatial and energy distributions analyzed. The calculations presented include the EM component of the background and the arrival time information for background species.