Author/Authors :
Magnon، نويسنده , , A and Ball، نويسنده , , J and Bedfer، نويسنده , , Y and Delagnes، نويسنده , , E and Kunne، نويسنده , , F and Le Goff، نويسنده , , J.-M and Lehar، نويسنده , , F and Marchand، نويسنده , , C and Miéville، نويسنده , , A and Neyret، نويسنده , , D and Pereira، نويسنده , , H and Platchkov، نويسنده , , S and Rebourgeard، نويسنده , , Ph and Tarte، نويسنده , , G and Thers، نويسنده , , D، نويسنده ,
Abstract :
Large size 40×40 cm2 gaseous microstrip MICROMEGAS detectors are used for the charged particle tracking in the COMPASS experiment at CERN. The commissioning was performed using a 160 GeV muon beam of up to 1.5×108 particles per SPS spill. Position resolution of ⩽70 μm and timing resolution of ⩽10 ns are achieved. A printed circuit board of 60×120 cm2 surface and 100 μm thickness allows to move the front-end electronics components outside of the spectrometer acceptance, hence keeping the amount of material within acceptance minimum. These detectors fulfill the stringent requirements of the COMPASS spectrometry.
