Author/Authors :
Park، نويسنده , , S. and Ahn، نويسنده , , S.H. and Akimenko، نويسنده , , S. and Anan، نويسنده , , P.S. and Bahk، نويسنده , , S.Y. and Ban، نويسنده , , Y. and Cai، نويسنده , , J. and Cho، نويسنده , , S.W. and Crotty، نويسنده , , I. and Ge، نويسنده , , Y.C. and Hong، نويسنده , , B. and Hong، نويسنده , , S.J. and Iaselli، نويسنده , , Shin G. and Ito، نويسنده , , M. and Jonalegedda، نويسنده , , S. and Kang، نويسنده , , T.I. and Kim، نويسنده , , B.I. and Kim، نويسنده , , H.C. ، نويسنده ,
Abstract :
The first six Resistive Plate Chambers (RPCs) of RE1/1 in the forward region of the Compact Muon Solenoid (CMS) detector were constructed and are being tested. These RPCs cover the pseudo-rapidity region from 1.6 to 2.1 and will serve as the base detector for the CMS RPC muon trigger. We report that these six RPCs are being tested with the CMS RPC quality certification procedures and that a full measurement of a chamber efficiency of 95 ± 4 % has been achieved at an operating voltage of 9.4 kV. This performance demonstrates that the RPC is qualified to be tested at the closest distance to the beam pipe as the muon trigger detector at the full LHC design luminosity.
