LBECA: A Low Background Electron Counting Apparatus for Sub-GeV Dark Matter Detection
Abstract
Two-phase noble liquid detectors, with large target masses and effective background reduction, are currently leading the dark matter direct detection for WIMP masses above a few GeV. Due to their sensitivity to single ionized electron signals, these detectors were shown to also have strong constraints for sub-GeV dark matter via their scattering on electrons. In fact, the most stringent direct detection constraints for sub-GeV dark matter down to as low as ~5 MeV come from noble liquid detectors, namely XENON10, DarkSide-50, XENON100 and XENON1T, although these experiments still suffer from high background at single or a few electron level. LBECA is a planned 100-kg scale liquid xenon detector with significant reduction of the single and a few electron background. The experiment will improve the sensitivity to sub-GeV dark matter by three orders of magnitude compared to the current best constraints.
Cite
@article{arxiv.2001.09311,
title = {LBECA: A Low Background Electron Counting Apparatus for Sub-GeV Dark Matter Detection},
author = {A. Bernstein and M. Clark and R. Essig and M. Fernandez-Serra and A. Kopec and R. F. Lang and J. Long and K. Ni and S. Pereverzev and J. Qi and P. Sorensen and Y. Wei and J. Xu and J. Ye and C. Zhen},
journal= {arXiv preprint arXiv:2001.09311},
year = {2020}
}
Comments
to appear in the Proceedings of the TAUP 2019 Conference