Abstract
A novel type of parallel plate counter with a resistive anode and a two dimensional read-out is presented. The anode is made of a thin germanium layer with a sheet resistivity ≳ 1 MΩ/□ and the cathode is made of aluminized mylar 5 μm thick. The anode is transparent to the fast impulse due to the collection of the multiplication electrons. A chessboard of "pads" placed behind the anode plane is used to obtain the positional information. The detector and the read-out system are physically and logically separated. The device is continuous, homogenous self-triggering and can operate at a rate of 106 particles/s. A spatial resolution ⩽ 50 μm for both coordinates has been measured.
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