Title :
A search for a 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, N. ; Yamaga, M. ; Yamaguchi, A. ; Yusa, Y. ; Yuta, H.
Author_Institution :
Dept. of Eng., Iwate Univ., Morioka, Japan
fDate :
6/1/2001 12:00:00 AM
Abstract :
We have operated successfully glass resistive plate counters in the streamer mode at the 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 but has a high global warming potential (1300 times higher than that of CO2). Thus freon gases might be unusable in the near future. We tested the performance of a glass resistive plate counter operated in the streamer mode with an alternative gas mixtures of argon, butane, CO2, and/or O2 gases and found an efficiency of about 90%
Keywords :
gas mixtures; streamer chambers; 2 mm; 30 cm; 90 percent; Ar-butane-CO2-O2 gases; BELLE experiment; freonless gas mixture; glass RPC; glass resistive plate counters; nonflammable gas mixture; streamer mode; Argon; Counting circuits; Detectors; Electrodes; Electrons; Gases; Glass; Global warming; Sulfur hexafluoride; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
