Nd. Giokaris et al., A COMPARISON OF ARGON AND XENON GAS-MIXTURES AT HIGH-PRESSURE FOR CALORIMETRY, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 333(2-3), 1993, pp. 364-371
Calorimeters using high pressure gas as active medium are now being co
nsidered as candidates for the forward region of detectors at high lum
inosity colliders. A parallel plate electromagnetic calorimeter and a
high pressure test vessel have been used to study and compare the resp
onse of Ar+CH4, Ar+CF4, Ar+C2H6, Xe+CH4 and Xe+CF4 gas mixtures to 50
GeV electrons and to alpha particles from an Am-241 source. Results on
the energy resolution, the electron drift velocity, and the collected
charge as a function of electric field and gas pressure for the diffe
rent gas mixtures are compared.