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

Volume

1

fYear

1995

fDate

21-28 Oct 1995

Firstpage

505

Abstract

The good time and position resolution of the resistive plate counter (RPC) make it on attractive detector for muon trigger system of collider experiment. The standard gas mixture (Ar:68%, +iso-C₄H₁₀:30%, +Freon:2%) used for RPC is very flammable when leaked into air. In view of safety issues, we have been studying Ar+CO₂+iso-C₄H₁₀+Freon gas mixture as a function of ratio Ar:CO₂ and with the maximum iso-C₄H₁₀ allowed in non-flammable gas mixture for ABS electrodes. The main characteristic of the various mixture have been measured: single count rate versus high voltage and counting efficiency. We have found a set of non-flammable mixture of the kind of Ar+CO₂+Freon containing less than ~8.4% of iso-C₄H₁₀ for muon counter of KEK-B

Keywords

ionisation chambers; muon detection; position sensitive particle detectors; safety; streamer chambers; ABS electrodes; Ar; CO₂; muon counter; muon trigger system; nonflammable gas mixture; position resolution; resistive plate counter; safety; Argon; Conductivity; Counting circuits; Electrodes; Fires; Flammability; Gases; Ignition; Ink; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference Record, 1995., 1995 IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-3180-X

Type

conf

DOI

10.1109/NSSMIC.1995.504277

Filename

504277