FP420, a New Proton Detector for the LHC

Plans for a proposed upgrade that adds proton taggers 420 m upstream and downstream of the ATLAS and CMS detectors will be presented. These new detectors will add significantly to the discovery potential. The design features ultra-fast time-of-flight counters which could be used to dramatically decrease backgrounds to events with a massive central system and forward/backward protons, by using timing to confirm that the protons originate from the same event vertex as the central system.