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Next: INTRODUCTION
A new gas chamber configuration is described. It combines the geometry of the classical multiwire proportional chambers and the one of the recently developed micro gap chambers. These new chambers consist of a cathode and an anode wire plane separated by thin dielectric strips. The anode shape restores the cylindrical electric field configuration of the multiwire proportional chambers lost by the micro gap chambers due to their flat anode shape. Gas gains higher than 105 have been obtained in stable conditions allowing the detection of single electrons. Using a current preamplifier, fast and short signals have been observed.
