A 2 mm gas gap Resistive Plate Chamber with bakelite plates has been operated in avalanche mode with a Cs-137 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.
Performance of a resistive plate chamber operated in avalanche mode under Cs-137 irradiation
Abbrescia, M;Nuzzo, S;
1997-01-01
Abstract
A 2 mm gas gap Resistive Plate Chamber with bakelite plates has been operated in avalanche mode with a Cs-137 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.File in questo prodotto:
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