FAS Abstracts 2004 Meeting Page

Joint Meeting: Engineering & Physics and Space Sciences A (PSS): PSS-5

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Prototypes for particle detectors employing gas electron multiplier. J. SLANKER, G. KARAGIORGI, K. DEHMELT, M.HOHLMANN and L. CARAWAY.  Florida Institute of Technology, Dept. of Physics and Space Sciences, Melbourne, FL 32901.  Single and Triple Gas Electron Multiplier (GEM) Detectors have been designed and built in the Detector Development Lab at Florida Tech. The detectors comprise one or three GEM foils sandwiched between a drift plate and an induction plate.  The GEM foils are perforated 50 μm thick sheets of kapton covered on both sides with copper.  The micro-holes in the GEM foil cause secondary electrons, from high-energy particle interactions in the gas volume, to cascade through the gaseous environment.  The electrons drift towards the induction plate, where a signal pulse is picked up.  Design, set-up and preliminary results on performance will be presented.