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., Colaleo, A., Iaselli, G., Maggi, M., Marangelli, B., Natali, S., Nuzzo, S., Ranieri, A., Romano, F., Gianini, G., Ratti, S.P., Vitulo, P.. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 392:1-3(1997), pp. 155-160. [10.1016/S0168-9002(97)00240-4]
Performance of a resistive plate chamber operated in avalanche mode under Cs-137 irradiation
IASELLI, Giuseppe;
1997
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
