LUX trigger efficiency



Akerib, DS, Alsum, S, Araujo, HM, Bai, X, Balajthy, J, Beltrame, P, Bernard, EP, Bernstein, A, Biesiadzinski, TP, Boulton, EM
et al (show 87 more authors) (2018) LUX trigger efficiency. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 908. pp. 401-410.

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Abstract

The Large Underground Xenon experiment (LUX) searches for dark matter using a dual-phase xenon detector. LUX uses a custom-developed trigger system for event selection. In this paper, the trigger efficiency, which is defined as the probability that an event of interest is selected for offline analysis, is studied using raw data obtained from both electron recoil (ER) and nuclear recoil (NR) calibrations. The measured efficiency exceeds 98% at a pulse area of 90 detected photons, which is well below the WIMP analysis threshold on the S2 pulse area. The efficiency also exceeds 98% at recoil energies of 0.2 keV and above for ER, and 1.3 keV and above for NR. The measured trigger efficiency varies between 99% and 100% over the fiducial volume of the detector.

Item Type: Article
Uncontrolled Keywords: Trigger efficiency, Dark matter detectors, WIMPs, Liquid xenon
Depositing User: Symplectic Admin
Date Deposited: 16 Jan 2020 17:22
Last Modified: 19 Jan 2023 00:09
DOI: 10.1016/j.nima.2018.07.094
Open Access URL: https://arxiv.org/pdf/1802.07784.pdf
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3070888