Micro-Channel Plate devices (MCP) provide fastsignals with rise-times in the 100 ps range, allowing ameasurement of the time-of-arrival of light pulses with a fewpico-seconds accuracy using either constant fractiondiscrimination followed by time-to-digital conversion, orwaveform sampling processed after digitization. The coupling ofthe MCP anode plane to 50 Ωtransmission lines allows both aprecise time measurement and additionally the potential for aposition measurement with an accuracy of a few hundredmicrons for large-area devices. We present position measurementresults obtained with MCPs from Photonis, 10-cm transmissionlines, and a calibrated laser source followed by sampling anddigitization, and waveform analysis. A detailed simulation of thetransmission lines is presented. We compare the measuredposition resolution for two identical setups but with MCPs ofdifferent pore diameters: 25 and 10 microns. Simulation resultsare also presented for transmission lines up to 1-m in length.
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