Beam test result of a large real-size RPC for the CMS/LHC experiment

In this report, first beam test results for a real size RE2-2 prototype RPC for the forward region of the CERN CMS are presented. The beam test for the prototype RPC was performed at the Gamma Irradiation Facility (GIF) in CERN with a particle rate ranging up to ∼700Hz/cm2. These test results demonstrate that a real size RE2-2 RPC can be built with relatively low resistivity of bakelite (∼1010 Ω cm). The current design of the RPC can be an option for the CMS forward region with its good efficiency and time characteristics under high radiation environment.