Title :
A study of non-flammable gas mixture for resistive plate counter
Author :
Takamatsu, H. ; Abe, K. ; Hoshi, Y. ; Ishikawa, M. ; Kawamura, N. ; Kawasaki, H. ; Nagamine, T. ; Nakajima, T. ; Neichi, K. ; Takayama, T. ; Yamaguchi, A. ; Yuta, H.
Author_Institution :
Tohoku Gakuin Univ., Tagajo, Japan
fDate :
6/1/1996 12:00:00 AM
Abstract :
The RPC (resistive plate counter) has good time and position resolution. These factors make it an attractive candidate for trigger system at collider experiment. The standard gas mixtures (Ar+iso-C4 H10+Freon) used in RPC are very flammable when leaked into air. In view of safety issue,we have studied non-flammable gas of Ar+CO2+iso-C4H10+Freon as a function of ratio Ar:CO2 allowed in non-flammable gas mixtures for the RPC with ABS electrodes. The basic performance of the various mixtures have been measured; singles (untriggered) count rate, detection efficiency and charge spectra versus operating voltage. We have found a set of non-flammable mixtures of the kind of Ar+CO2+Freon contained less than ~8.4% of iso-C4H10 for KL /muon counter of KEK B-factory at KEK
Keywords :
gas mixtures; proportional counters; safety; ABS electrodes; Ar; CO2; charge spectra; detection efficiency; nonflammable gas mixture; position resolution; resistive plate counter; safety; trigger system; Argon; Charge measurement; Counting circuits; Current measurement; Detectors; Fires; Flammability; Gases; Mesons; Safety;
Journal_Title :
Nuclear Science, IEEE Transactions on
