Performance of 20:1 multiplexer for large area charge readouts in directional dark matter TPC detectors

摘要

More target mass is required in current TPC based directional dark matterdetectors for improved detector sensitivity. This can be achieved by scaling upthe detector volumes, but this results in the need for more analogue signalchannels. A possible solution to reducing the overall cost of the chargereadout electronics is to multiplex the signal readout channels. Here, wepresent work on an expanded LMH6574 multiplexer system with a capability ofreducing the number of readouts in such TPC detectors by a factor of 20.Results indicate that the important charge distribution asymmetry along anionization track is retained after multiplexed signals are demultiplexed.