Title :
A search for freonless gas mixture for glass RPC
Author :
Narita, S. ; Watanabe, K. ; Abe, K. ; Handa, F. ; Higuchi, I. ; Hoshi, Y. ; Kawamura, N. ; Kumagai, K. ; Mikami, Y. ; Murono, N. ; Nagamine, T. ; Neichi, K. ; Takahashi, T. ; Yamaga, M. ; Yamaguchi, A. ; Yusa, Y. ; Yuta, H.
Author_Institution :
Dept. of Eng., Iwate Univ., Morioka, Japan
Abstract :
We have operated successfully the glass Resistive Plate Counters in the streamer mode at BELLE experiment by using a nonflammable gas mixture of argon 30%, butane-silver 8% and freon. HFC-134a 62%. This freon is non-ozone depleting freon, but having a high global warming potential, 1300 times higher than that of CO2. Freon gases might be unusable in the near future. We tested a performance of glass RPC operated in the streamer mode with the alternative gas mixtures of argone, butane, CO2 and/or O2 gases, and found an efficiency of about 90%
Keywords :
argon; gas mixtures; streamer chambers; butane; freon; freonless gas mixture; glass Resistive Plate Counters; nonflammable gas mixture; streamer mode; Argon; Conductivity; Detectors; Electrodes; Electrons; Gases; Glass; Physics; Sulfur hexafluoride; Testing;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2000 IEEE
Conference_Location :
Lyon
Print_ISBN :
0-7803-6503-8
DOI :
10.1109/NSSMIC.2000.949092
