Study of MWPCs with interpolating pad readout for high multiplicity charged particle detection

Two types of MWPC with interpolating cathode pad readout for two dimensional position sensitive detection have been studied. One type uses rectangular pads and resistive charge division. A detector with an active area of 26cm x 16cm, over 1,000 readout channels has been built. With readout spacing of 1 cm, a position resolution of ∼ 70μm (rms) for 5.4 keV X-rays and a differential non-linearity of ±6% have been achieved. Another type of detector uses chevron shaped pads for geometrical charge division. Position resolution ∼ 50μm (rms) for 5.4 keV X-rays has been observed in a test detector and results of an investigation to reduce differential non-linearity are reported