H. Faissner et al., PERFORMANCE OF A WALL-LESS DRIFT CHAMBER FOR MUON DETECTION, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 356(2-3), 1995, pp. 280-285
We present results on an intensive study of a muon detector prototype
designed for an experiment at the LHC. The chamber has eight layers of
drift tubes measuring one projection of a muon track, and was tested
with cosmic and beam muons and in a magnetic field. Single hit detecti
on efficiencies of 99.9% for all gas mixtures and single hit resolutio
ns of 190 mu m for the preferred gas mixture of Ar/CO2 80%/20% were ac
hieved. In a magnetic field of 3 T the single hit resolution with this
gas mixture decreased by 10%.