Radiation environment at the LHCb vertex detector area

Particle fluxes and absorbed dose levels in the LHCb vertex detector are presented. The simulation is performed with the IHEP MARS program and includes all the material of the vertex detector together with supporting structures as well as the surrounding LHC and LHCb elements. The particle spectra are presented as a function of radius and momentum, and have been converted to a 1 MeV equivalent neutron flux by folding them with the induced displacement damage constant tables.1