Prototyping and study of Glass Spark Chamber detectors
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Prototyping and study ofGlass Spark Chamber detectors
B.SatyanarayanaTIFR, Mumbai
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January 9, 2003 Prototyping and study of Glass Spark Chamber detectors
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Materials for the chamber fabrication
Glass Modi float glass 2mm thick Measured Mean 2.017 & RMS 0.013 Resistivity ~1012-cm Surface preparation
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Materials for the chamber fabrication
Carbon powder Special high grade Kolloidgraphite
40019 Nikunj Eximp Enterprises (P) Ltd Fixed carbon 94/96%, Mesh size –800/1000
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Materials for the chamber fabrication
Coating Mixed with thinner and lacquer Applied with spray gun Various proportions tried
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Graphite resistance
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Materials for the chamber fabrication
Argon 44%
Isobutane 4%
Freon-R22 52%
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Spacers for glass plates
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Acrylic frame for the chamber
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Exploded view of the chamber
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Model of an assembled chamber
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Typical signal from the chamber
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Cosmic Ray Test setup
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Counting rate of the chamber
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Present status
Detector efficiency is the main problem
Gas mixture, carbon coating Procuring various gases and mixer Need to improve timing