Demonstration of ThGEM-Multiwire Hybrid Charge Readout for Directional Dark Matter Searches
A. C. Ezeribe, C. Eldridge, W. Lynch, R. R. Marcelo Gregorio, A., Scarff, N. J. C. Spooner

TL;DR
This paper demonstrates a novel ThGEM-Multiwire hybrid charge readout for gas TPCs, enhancing scalability and noise performance for directional dark matter detection.
Contribution
It introduces a new hybrid charge readout technology combining ThGEM and multiwire methods for improved dark matter detector scalability.
Findings
Achieved ion drift velocity of 139 m/s in SF6 gas.
Demonstrated a gas gain of approximately 2470.
Showed the hybrid detector's potential for large-scale dark matter searches.
Abstract
Sensitivities of current directional dark matter search detectors using gas time projection chambers are now constrained by target mass. A ton-scale gas TPC detector will require large charge readout areas. We present a first demonstration of a novel ThGEM-Multiwire hybrid charge readout technology which combines the robust nature and high gas gain of Thick Gaseous Electron Multipliers with lower capacitive noise of a one-plane multiwire charge readout in SF target gas. Measurements performed with this hybrid detector show an ion drift velocity of in a reduced drift field of at a gas gain of in 20 Torr of pure SF target gas.
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