Author/Authors :
Altunbas، نويسنده , , C. and Capéans، نويسنده , , M. and Dehmelt، نويسنده , , K. and Ehlers، نويسنده , , J. and Friedrich، نويسنده , , J. and Konorov، نويسنده , , I. and Gandi، نويسنده , , A. and Kappler، نويسنده , , S. and Ketzer، نويسنده , , B. and De Oliveira، نويسنده , , R. and Paul، نويسنده , , S. and Placci، نويسنده , , A. and Ropelewski، نويسنده , , L. and Sauli، نويسنده , , F. Xavier Simon، نويسنده , , F. and van Stenis، نويسنده , , M.، نويسنده ,
Abstract :
The Small Area Tracking system of the COMPASS experiment at CERN includes a set of 20 large area, fast position-sensitive Gas Electron Multiplier detectors, designed to reliably operate in the harsh radiation environment of the experiment. We describe in detail the design, choice of materials, assembly procedures and quality controls used to manufacture the devices. The test procedure in the laboratory, the performance in test beams and in the initial commissioning phase in the experiment are presented and discussed.
Keywords :
Gas electron multiplier , GEM , COMPASS , High rate tracking , Fast gas detector
