Author/Authors :
Ahn، نويسنده , , S.H. and Amirikas، نويسنده , , R. and Bahk، نويسنده , , S.Y. and Hong، نويسنده , , B. and Hong، نويسنده , , S.J. and Kim، نويسنده , , K.H and Kim، نويسنده , , Y.J. and Kim، نويسنده , , Y.U. and Koo، نويسنده , , D.G. and Lee، نويسنده , , K.S. and Lee، نويسنده , , S.J. and Nam، نويسنده , , S.K. and Park، نويسنده , , S. and Rhee، نويسنده , , J.T. and Seo، نويسنده , , S.W. and Sim، نويسنده , , K.S.، نويسنده ,
Abstract :
We present the first beam test results of a real size prototype RPC for the endcap region of the CMS, one of large detectors at CERN LHC. The chamber was built with relatively low resistivity bakelite made in Korea and was operated successfully at the Gamma Irradiation Facility at CERN under the highest photon flux available, which corresponds to an effective cluster rate up to about 800 Hz/cm2. The cross-talk effects between strips and sectors have been studied extensively. The high voltage plateau, which satisfies the CMS requirements for efficiency and the number of strips fired per cluster, extends to at least 300 V. The time resolution has been measured to be better than 1.3 ns in this HV plateau region. These results demonstrate that the current design of the device can be used as a muon trigger detector for the CMS forward region.
Keywords :
High radiation environment , Double gap RPC , CMS , LHC , Cross-talk
