Scintillation time dependence and pulse shape discrimination in liquid argon
By W. Lippincott, K. Coakley, D. Gastler, A. Hime, E. Kearns, D. McKinsey, J. Nikkel, L. Stonehill. 2008
136 citations recorded by the source corpus.
Using a single-phase liquid argon detector with a signal yield of 4.85 photoelectrons per keV of electronic-equivalent recoil energy (keVee), we measure the scintillation time dependence of both electronic and nuclear recoils in liquid argon down to 5 keVee. We develop two methods of pulse shape discrimination to distinguish between electronic and nuclear recoils. Using one of these methods, we measure a background- and statistics-limited level of electronic recoil contamination to be 7.6x10{sup -7} between 52 and 110 keV of nuclear recoil energy (keVr) for a nuclear recoil acceptance of 50% with no nuclear recoil-like events above 62 keVr. Finally, we develop a maximum likelihood method of pulse shape discrimination based on the measured scintillation time dependence.
View Paper: https://www.semanticscholar.org/paper/c4a0cee16cd358b976a6a7761614b39b652b3519
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Citations in the corpus
- Effects of Nitrogen contamination in liquid Argon (2008, methodology): “5 P 0 6 0 0 3 This result, though compatible with several other measurements performed in past experiments, is only marginally compatible with the recent measurement reported in [11].”
- Liquid noble gas detectors for low energy particle physics (2012, methodology): “veral R&D chambers, including MicroCLEAN and DEAP-1, have been built specifically to address the discrimination and other key issues, such as the scintillation efficiency for nuclear recoils in LAr [54, 102, 118]. Two experiments, MiniCLEAN and DEAP-3600, are presently being installed at SNOLab, w”