scholarly journals Measurements and Modeling of Low Energy Nuclear Recoils in Liquid Xenon for Dark Matter and Neutrino Detection

2018 ◽  
Author(s):  
B G Lenardo
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Liquid Xenon ◽  
Neutrino Detection ◽  
Nuclear Recoils

scholarly journals Scintillation efficiency for low energy nuclear recoils in liquid xenon dark matter detectors

2015 ◽  
Vol 61 ◽  
pp. 56-61 ◽  
Author(s):  
Wei Mu ◽  
Xiaonu Xiong ◽  
Xiangdong Ji
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Liquid Xenon ◽  
Nuclear Recoils ◽  
Scintillation Efficiency

scholarly journals A Review of Basic Energy Reconstruction Techniques in Liquid Xenon and Argon Detectors for Dark Matter and Neutrino Physics Using NEST

Instruments ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 13
Author(s):  
Matthew Szydagis ◽  
Grant A. Block ◽  
Collin Farquhar ◽  
Alexander J. Flesher ◽  
Ekaterina S. Kozlova ◽  
...  
Keyword(s):  
Dark Matter ◽  
Neutrino Physics ◽  
Electric Fields ◽  
Direct Detection ◽  
Profile Likelihood ◽  
Liquid Argon ◽  
Energy Scale ◽  
Liquid Xenon ◽  
Nuclear Recoils ◽  
Available Information

Detectors based upon the noble elements, especially liquid xenon as well as liquid argon, as both single- and dual-phase types, require reconstruction of the energies of interacting particles, both in the field of direct detection of dark matter (weakly interacting massive particles WIMPs, axions, etc.) and in neutrino physics. Experimentalists, as well as theorists who reanalyze/reinterpret experimental data, have used a few different techniques over the past few decades. In this paper, we review techniques based on solely the primary scintillation channel, the ionization or secondary channel available at non-zero drift electric fields, and combined techniques that include a simple linear combination and weighted averages, with a brief discussion of the application of profile likelihood, maximum likelihood, and machine learning. Comparing results for electron recoils (beta and gamma interactions) and nuclear recoils (primarily from neutrons) from the Noble Element Simulation Technique (NEST) simulation to available data, we confirm that combining all available information generates higher-precision means, lower widths (energy resolution), and more symmetric shapes (approximately Gaussian) especially at keV-scale energies, with the symmetry even greater when thresholding is addressed. Near thresholds, bias from upward fluctuations matters. For MeV-GeV scales, if only one channel is utilized, an ionization-only-based energy scale outperforms scintillation; channel combination remains beneficial. We discuss here what major collaborations use.

scholarly journals Simultaneous measurement of the light and charge response of liquid xenon to low-energy nuclear recoils at multiple electric fields

2018 ◽  
Vol 98 (11) ◽  
Author(s):  
E. Aprile ◽  
M. Anthony ◽  
Q. Lin ◽  
Z. Greene ◽  
P. de Perio ◽  
...  
Keyword(s):  
Electric Fields ◽  
Simultaneous Measurement ◽  
Low Energy ◽  
Liquid Xenon ◽  
Nuclear Recoils

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

2007 ◽  
Vol 173 ◽  
pp. 160-163 ◽  
Author(s):  
T. Shutt ◽  
C.E. Dahl ◽  
J. Kwong ◽  
A. Bolozdynya ◽  
P. Brusov
Keyword(s):  
Dark Matter ◽  
Low Energy ◽  
Liquid Xenon ◽  
Two Phase ◽  
Phase Liquid

scholarly journals A coherent understanding of low-energy nuclear recoils in liquid xenon

2010 ◽  
Vol 2010 (09) ◽  
pp. 033-033 ◽  
Author(s):  
Peter Sorensen
Keyword(s):  
Low Energy ◽  
Liquid Xenon ◽  
Nuclear Recoils

scholarly journals Scintillation and ionization responses of liquid xenon to low energy electronic and nuclear recoils at drift fields from236  V/cmto3.93  kV/cm

2015 ◽  
Vol 92 (3) ◽  
Author(s):  
Qing Lin ◽  
Jialing Fei ◽  
Fei Gao ◽  
Jie Hu ◽  
Yuehuan Wei ◽  
...  
Keyword(s):  
Low Energy ◽  
Liquid Xenon ◽  
Nuclear Recoils

Dark matter and neutrino detection with liquid xenon

1994 ◽  
Author(s):  
Jun Park ◽  
Muzaffer Atac ◽  
David B. Cline ◽  
Huijuan Wang ◽  
P. F. Smith
Keyword(s):  
Dark Matter ◽  
Liquid Xenon ◽  
Neutrino Detection

scholarly journals Analysis of the 40K contamination in NaI(Tl) crystals from different providers in the frame of the ANAIS project

2014 ◽  
Vol 29 (19) ◽  
pp. 1443010 ◽  
Author(s):  
C. Cuesta ◽  
J. Amaré ◽  
S. Cebrián ◽  
E. García ◽  
C. Ginestra ◽  
...  
Keyword(s):  
Dark Matter ◽  
Sodium Iodide ◽  
Low Energy ◽  
Annual Modulation ◽  
Dark Matter Search ◽  
Scintillation Signal ◽  
Nuclear Recoils ◽  
Search Experiment ◽  
Low Efficiency ◽  
Electron Equivalent

NaI(Tl) large crystals are applied in the search for galactic dark matter particles through their elastic scattering off the target nuclei in the detector by measuring the scintillation signal produced. However, energies deposited in the form of nuclear recoils are small, which added to the low efficiency to convert that energy into scintillation, makes that events at or very near the energy threshold, attributed either to radioactive backgrounds or to spurious noise (nonbulk NaI(Tl) scintillation events), can compromise the sensitivity goals of such an experiment. DAMA/LIBRA experiment, using 250 kg NaI(Tl) target, reported first evidence of the presence of an annual modulation in the detection rate compatible with that expected for a dark matter signal just in the region below 6 keVee (electron equivalent energy). In the frame of the ANAIS (Annual modulation with NaI Scintillators) dark matter search project a large and long effort has been carried out in order to understand the origin of events at very low energy in large sodium iodide detectors and develop convenient filters to reject those nonattributable to scintillation in the bulk NaI(Tl) crystal. 40K is probably the most relevant radioactive contaminant in the bulk for NaI(Tl) detectors because of its important contribution to the background at very low energy. ANAIS goal is to achieve levels at or below 20 ppb natural potassium. In this paper we will report on our effort to determine the 40K contamination in several NaI(Tl) crystals, by measuring in coincidence between two (or more) of them. Results obtained for the 40K content of crystals from different providers will be compared and prospects of the ANAIS dark matter search experiment will be briefly reviewed.

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