Portal de Periódicos da CAPES

Resistive Plate Chambers in ATLAS

1996; Elsevier BV; Volume: 384; Issue: 1 Linguagem: Inglês

10.1016/s0168-9002(96)00891-1

1872-9576

Anna Di Ciaccio,

Radiation Detection and Scintillator Technologies

The ATLAS first level muon trigger is based, in the rapidity region |η| ≤ 1.05, on fast and finely segmented gaseous detectors, Resistive Plate Chambers (RPCs). A prototype of a small scale RPC trigger tower has been assembled and tested. We present results on efficiency, time resolution, cluster size and collected charge. The detectors, filled with a non-flammable and environment-safe gas mixture, have been operated in avalanche mode. The measurements have been made at the CERN SPS accelerator in the H8 test-beam area with muon fluxes up to 900 Hz/cm2. A 14 mCi 60Co radiactive source has been used to illuminate the chambers with a flux of low energy photons, simulating LHC background conditions.