MiX: a position sensitive dual-phase liquid xenon detector

Stephenson, S.; Haefner, J.; Lin, Q.; Ni, Kan; Pushkin, K.; Raymond, R. S.; Schubnell, M.; Shutty, Noah; Tarlè, G.; Weaverdyck, Curtis; Lorenzon, W.

doi:10.1088/1748-0221/10/10/p10040

Cited by 18 publications

(23 citation statements)

References 27 publications

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“…The charge yield of the same 33.2 keV K-shell energy measured with a separate multiple-scatter analysis of LUX 127 Xe data produced the same result with similar levels of uncertainty [26]. The LUX energy resolution at energies below 250 keV compares favorably with previous measurements in large LXe TPCs [30] and is comparable to the resolution achieved by ZEPLIN-III [29] and by much smaller detectors [27,28]. Tables II and III First, the amount of S2 electroluminescence at energies greater than 500 keV is enough to exceed the maximum of the data acquisition (DAQ) digitization range for one FIG.…”

Section: Discussion Of Resultssupporting

confidence: 71%

Signal yields, energy resolution, and recombination fluctuations in liquid xenon

Akerib¹,

Alsum²,

Araújo³

et al. 2017

Phys. Rev. D

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This work presents an analysis of monoenergetic electronic recoil peaks in the dark-matter-search and calibration data from the first underground science run of the Large Underground Xenon (LUX) detector. Liquid xenon charge and light yields for electronic recoil energies between 5.2 and 661.7 keV are measured, as well as the energy resolution for the LUX detector at those same energies. Additionally, there is an interpretation of existing measurements and descriptions of electron-ion recombination fluctuations in liquid xenon as limiting cases of a more general liquid xenon recombination fluctuation model. Measurements of the standard deviation of these fluctuations at monoenergetic electronic recoil peaks exhibit a linear dependence on the number of ions for energy deposits up to 661.7 keV, consistent with previous LUX measurements between 2 and 16 keV with 3H. We highlight similarities in liquid xenon recombination for electronic and nuclear recoils with a comparison of recombination fluctuations measured with low-energy calibration data

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Section: Discussion Of Resultssupporting

confidence: 71%

Signal yields, energy resolution, and recombination fluctuations in liquid xenon

Akerib¹,

Alsum²,

Araújo³

et al. 2017

Phys. Rev. D

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“…The xenon was subsequently purified [23] with a high-temperature zirconium SAES PS3-MT3-R-1 getter for about 24 hours. Periodic light yield data were recorded at a LXe temperature of (175 ± 0.2) K. Between measurements, the LXe level, measured using a concentric cylindrical capacitor [23] was reduced in steps of about 3 pF, which corresponded to a change in LXe level of about 8.1 mm. This process was continued until the floating disk rested either on the aperture of the PTFE connector at the bottom of the PTFE chamber (for geometry 1) or on the PMT window (for geometry 2).…”

Section: Resultsmentioning

confidence: 99%

Reflectance dependence of polytetrafluoroethylene on thickness for xenon scintillation light

Haefner

Neff

Arthurs

et al. 2017

Nuclear Instruments and Methods in Physics Research Section A:

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Many rare event searches including dark matter direct detection and neutrinoless double beta decay experiments take advantage of the high VUV reflective surfaces made from polytetrafluoroethylene (PTFE) reflector materials to achieve high light collection efficiency in their detectors. As the detectors have grown in size over the past decade, there has also been an increased need for ever thinner detector walls without significant loss in reflectance to reduce dead volumes around active noble liquids, outgassing, and potential backgrounds. We report on the experimental results to measure the dependence of the reflectance on thickness of two PTFE samples at wavelengths near 178 nm. No change in reflectance was observed as the wall thickness of a cylindrically shaped PTFE vessel immersed in liquid xenon was varied between 1 mm and 9.5 mm.

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“…To compare with measurements in the literature, we calculate L y at F = F 0 (S n = S e = 1) and plot it against the measurements of L ef f used in the fit. In our calculations, we use n γ ( 57 Co)/122 keV = 63photons / keV, a value calculated using NEST in [6] and confirmed experimentally in several experiments [12] and the L ef f data are scaled to give absolute yields. The resulting L y as a function of incident energy is shown in Fig.…”

Section: A Absolute Scintillation and Electron Yieldsmentioning

confidence: 99%

“…While other software exists to model ionization, scintillation, or recoil tracks, there is no comprehensive package that models both ionization and scintillation as a function of both energy and applied electric field. NEST can be used by the larger community to compare to new measurements and interpret experimental results [12][13][14][15].…”

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confidence: 99%

A Global Analysis of Light and Charge Yields in Liquid Xenon

Lenardo

Kazkaz

Manalaysay

et al. 2015

IEEE Trans. Nucl. Sci.

104

138

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Abstract-We present an updated model of light and charge yields from nuclear recoils in liquid xenon with a simultaneously constrained parameter set. A global analysis is performed using measurements of electron and photon yields compiled from all available historical data, as well as measurements of the ratio of the two. These data sweep over energies from 1 -300 keV and external applied electric fields from 0 -4060 V/cm. The model is constrained by constructing global cost functions and using a simulated annealing algorithm and a Markov Chain Monte Carlo approach to optimize and find confidence intervals on all free parameters in the model. This analysis contrasts with previous work in that we do not unnecessarily exclude data sets nor impose artificially conservative assumptions, do not use spline functions, and reduce the number of parameters used in NEST v0.98. We report our results and the calculated best-fit charge and light yields. These quantities are crucial to understanding the response of liquid xenon detectors in the energy regime important for rare event searches such as the direct detection of dark matter particles.

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MiX: a position sensitive dual-phase liquid xenon detector

Cited by 18 publications

References 27 publications

Signal yields, energy resolution, and recombination fluctuations in liquid xenon

Signal yields, energy resolution, and recombination fluctuations in liquid xenon

Reflectance dependence of polytetrafluoroethylene on thickness for xenon scintillation light

A Global Analysis of Light and Charge Yields in Liquid Xenon

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