scholarly journals Surface background suppression in liquid argon dark matter detectors using a newly discovered time component of tetraphenyl-butadiene scintillation

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
Chris Stanford ◽  
Shawn Westerdale ◽  
Jingke Xu ◽  
Frank Calaprice
Keyword(s):  
Dark Matter ◽  
Liquid Argon ◽  
Background Suppression ◽  
Time Component ◽  
Surface Background

scholarly journals The DarkSide Multiton Detector for the Direct Dark Matter Search

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
C. E. Aalseth ◽  
P. Agnes ◽  
A. Alton ◽  
K. Arisaka ◽  
D. M. Asner ◽  
...  
Keyword(s):  
Dark Matter ◽  
Time Projection Chamber ◽  
Liquid Argon ◽  
Weakly Interacting Massive Particles ◽  
Low Energy ◽  
Background Suppression ◽  
Dark Matter Search ◽  
Nuclear Recoils ◽  
Time Projection ◽  
Direct Dark Matter

Although the existence of dark matter is supported by many evidences, based on astrophysical measurements, its nature is still completely unknown. One major candidate is represented by weakly interacting massive particles (WIMPs), which could in principle be detected through their collisions with ordinary nuclei in a sensitive target, producing observable low-energy (<100 keV) nuclear recoils. The DarkSide program aims at the WIPMs detection using a liquid argon time projection chamber (LAr-TPC). In this paper we quickly review the DarkSide program focusing in particular on the next generation experiment DarkSide-G2, a 3.6-ton LAr-TPC. The different detector components are described as well as the improvements needed to scale the detector from DarkSide-50 (50 kg LAr-TPC) up to DarkSide-G2. Finally, the preliminary results on background suppression and expected sensitivity are presented.

scholarly journals Detecting dark matter with far-forward emulsion and liquid argon detectors at the LHC

2021 ◽  
Vol 103 (7) ◽  
Author(s):  
Brian Batell ◽  
Jonathan L. Feng ◽  
Sebastian Trojanowski
Keyword(s):  
Dark Matter ◽  
Liquid Argon

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 Active background suppression with the liquid argon scintillation veto of GERDA Phase II

2017 ◽  
Vol 888 ◽  
pp. 012238 ◽  
Author(s):  
M. Agostini ◽  
M. Allardt ◽  
A.M. Bakalyarov ◽  
M. Balata ◽  
I. Barabanov ◽  
...  
Keyword(s):  
Phase Ii ◽  
Liquid Argon ◽  
Background Suppression

scholarly journals Radon backgrounds in the DEAP-1 liquid-argon-based Dark Matter detector

2015 ◽  
Vol 62 ◽  
pp. 178-194 ◽  
Author(s):  
P.-A. Amaudruz ◽  
M. Batygov ◽  
B. Beltran ◽  
K. Boudjemline ◽  
M.G. Boulay ◽  
...  
Keyword(s):  
Dark Matter ◽  
Liquid Argon

scholarly journals First results on light readout from the 1-ton ArDM liquid argon detector for dark matter searches

2010 ◽  
Vol 5 (11) ◽  
pp. P11003-P11003 ◽  
Author(s):  
The ArDM Collaboration ◽  
C Amsler ◽  
A Badertscher ◽  
V Boccone ◽  
A Bueno ◽  
...  
Keyword(s):  
Dark Matter ◽  
Liquid Argon ◽  
First Results
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