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

Abstract

More target mass is required in current TPC based directional dark matter detectors for improved detector sensitivity. This can be achieved by scaling up the detector volumes, but this results in the need for more analogue signal channels. A possible solution to reducing the overall cost of the charge readout electronics is to multiplex the signal readout channels. Here, we present a multiplexer system in expanded mode based on LMH6574 chips produced by Texas Instruments, originally designed for video processing. The setup has a capability of reducing the number of readouts in such TPC detectors by a factor of 20. Results indicate that the important charge distribution asymmetry along an ionization track is retained after multiplexed signals are demultiplexed.

arXiv comment12 pages, 10 figures

References in corpus (10)

• A review of the discovery reach of directional Dark Matter detection
• The case for a directional dark matter detector and the status of current experimental efforts
• Readout strategies for directional dark matter detection beyond the neutrino background
• Directional Dark Matter Detection Beyond the Neutrino Bound
• Dark matter astrophysical uncertainties and the neutrino floor
• Low Threshold Results and Limits from the DRIFT Directional Dark Matter Detector
• First measurement of nuclear recoil head-tail sense in a fiducialised WIMP dark matter detector
• Demonstration of radon removal from SF${}_6$ using molecular sieves
• Measurement of directional range components of nuclear recoil tracks in a fiducialised dark matter detector
• Characterisation of Large Area THGEMs and Experimental Measurement of the Townsend Coefficients for CF${}_4$

Cited by in corpus (1)

• Demonstration of ThGEM-Multiwire Hybrid Charge Readout for Directional Dark Matter Searches