Demonstration Of True 3D Micro-Power Readout For Liquid Argon Time Projection Chambers

Daniel A. Dwyer
2018 Zenodo  
We report the demonstration of a micro-power sensor designed for true three-dimensional ionization charge detection and digital readout of liquid argon time projection chambers (LArTPCs). True 3D readout is achieved using a custom-designed 32-channel system-on-a-chip ASIC (LArPix-v1), manufactured in 180 nm bulk CMOS, to uniquely instrument each pad in a charge-sensitive pad sensor array. Using a prototype sensor with 3 mm pitch, we demonstrate low-noise (<500 e− equivalent) low-power (<100
more » ... h) ionization signal detection and readout of cosmic ray interactions in a 1-liter LArTPC. This demonstration of true 3D micro-power readout overcomes a critical technical obstacle for operation of an LArTPCs in high-occupancy environments, such as the near detector site of the Deep Underground Neutrino Experiment (DUNE).
doi:10.5281/zenodo.1292674 fatcat:rim25muxxrgitgwxzhlmxpq2nq