7–10 Nov 2023
SLAC
America/Los_Angeles timezone

Lowering the threshold of dual-phase LArTPCs

8 Nov 2023, 11:40
20m
48/1-112C/D - Redwood C/D (SLAC)

48/1-112C/D - Redwood C/D

SLAC

60
Oral RDC1: Noble Element Detectors RDC1

Speaker

Shawn Westerdale (University of California, Riverside)

Description

Dual-phase LArTPCs have demonstrated the capability of achieving sub-keV thresholds in the electron-counting S2-only channel, making them powerful tools for light dark matter searches, measuring coherent elastic neutrino-nucleus scattering at nuclear reactors, and other low-energy applications. However, efforts to study the lowest accessible energies in these detectors are complicated by spurious electron (SE) signals that dominate the lowest energies. In this presentation, we will discuss observations of SEs in the DarkSide-50 LArTPC, along with potential interpretations that can inform R&D needs and the design of future detectors. We will also discuss the prospect of doping LAr to enhance its ionization yield, along with R&D needs to deploy such technology in a future detector.

Early Career No

Primary author

Shawn Westerdale (University of California, Riverside)

Presentation materials