Abstract
Traditional charge readout technologies of single-phase Liquid Argon Time projection Chambers (LArTPCs) based on projective wire readout introduce intrinsic ambiguities in event reconstruction. Combined with the slow response inherent in LArTPC detectors, reconstruction ambiguities have limited their performance, until now. Here, we present a proof of principle of a pixelated charge readout that enables the full 3D tracking capabilities of LArTPCs. We characterize the signal-to-noise ratio of charge readout chain to be about 14, and demonstrate track reconstruction on 3D space points produced by the pixel readout. This pixelated charge readout makes LArTPCs a viable option for high-multiplicity environments.
Highlights
Since their evolution from gaseous TPCs [1,2,3], the charge readout for Liquid Argon TimeProjection Chambers (LArTPCs) has been achieved with two or more projective wire planes.Projective wire readouts have been successfully demonstrated in several experiments [4,5,6]; they introduce intrinsic ambiguities in event reconstruction [7]
We have developed a novel approach based on a pixelated charge readout to exploit the full 3D potential of Liquid Argon Time projection Chambers (LArTPCs)
We have presented a proof of concept for a pixelated charge readout for single-phase LArTPCs by successfully building and operating a pixelated LArTPC, and reconstructed 3D tracks of cosmic muons crossing the TPC
Summary
Since their evolution from gaseous TPCs [1,2,3], the charge readout for Liquid Argon Time. Deployments in neutrino beams with spills of O(10 μs) [9,10] long will have multiple events pile-up in the same readout window, this is problematic for projective wire readouts. For this reason, we have developed a novel approach based on a pixelated charge readout to exploit the full 3D potential of LArTPCs. Pixelated charge readout is not a new idea, it has been employed in gaseous TPCs since the early. The multiplexing scheme divides the pixel plane into several Regions Of Interest(ROIs), where pixels in different ROIs share the same channel While not ideal, this allowed for the proof of principle of a pixelated charge readout in a single-phase LArTPC.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
