Author/Authors :
Abbrescia، نويسنده , , M. and Colaleo، نويسنده , , A. and Iaselli، نويسنده , , G. and Maggi، نويسنده , , M. and Marangelli، نويسنده , , B. and Natali، نويسنده , , S. and Nuzzo، نويسنده , , S. De Ranieri، نويسنده , , A. and Romano، نويسنده , , F. and Gianini، نويسنده , , G. and Ratti، نويسنده , , S.P. and Vitulo، نويسنده , , P.، نويسنده ,
Abstract :
A 2 mm gas gap Resistive Plate Chamber with bakelite plates has been operated in avalanche mode with a 137Cs source. We report measurements of the efficiency for a cosmic ray detection and the charge developed in the gap, performed for two different gas mixtures: the first containing a high percentage of environmental friendly “freon” C2H2F4; the second one having a high percentage of argon. We show that the freon-based mixture exhibits a wide full-efficiency plateau with low streamer probability, while the argon-based mixture allows a reduction in the detector power consumption.
