A.Bressan, A.Buzulutskov, L.Ropelewski, F.Sauli, L.Shekhtman
"High gain operation of GEM in pure argon "
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We study the operation of the Gas Electron Multiplier (GEM) in
pure Ar, in comparison to that in Ar-CO2 mixture. In pure Ar, high GEM
gains, of above 700 and 3000 for single and double GEM structures
correspondingly, have been obtained. It is observed that the GEM
effective gain and its charging-up are strongly affected by electric
field values above and below the GEM. Applications to the development
of non-ageing gas photomultiplier are discussed.
Last modified: 14 Sep 1998,