Author/Authors :
Procureur، نويسنده , , S. and Aune، نويسنده , , S. and Ball، نويسنده , , J. and Bedfer، نويسنده , , Y. and Boyer، نويسنده , , M. and Colas، نويسنده , , H. and Giganon، نويسنده , , A. and Konczykowski، نويسنده , , P. and Kunne، نويسنده , , F. and Lahonde-Hamdoun، نويسنده , , C. and Makke، نويسنده , , N. and Marchand، نويسنده , , C. and Meunier، نويسنده , , O. and Morreale، نويسنده , , A. and Moreno، نويسنده , , B. and Moutarde، نويسنده , , H. and Neyret، نويسنده , , D. and Platchkov، نويسنده , , S. and Sabatié، نويسنده , , F.، نويسنده ,
Abstract :
A detailed study of several Micromegas detectors prototyped for the COMPASS and CLAS12 experiments is presented. Using a 150 GeV/c pion beam, the discharge probability was measured for several detector variants including bulk and non-bulk Micromegas. A detector equipped with an additional GEM foil as pre-amplification stage was also tested. A resistive coating of the readout strips was found to reduce the amplitude of the discharge by at least two orders of magnitude which was below the detection limit of the experimental setup. The effects of the micro-mesh type and material were investigated as well as the influence of the drift gap. Response in the presence of a 1.5 T transverse magnetic field was also studied. The measurements presented were performed during a RD51 beam test period.
Keywords :
Discharge , RD51 , COMPASS , SIMULATION , spark , GEANT4 , Micro Pattern Gaseous Detectors , CLAS12 , Micromegas , resistive , GEM
