scholarly journals Characterization of the scintillation time response of liquid argon detectors for dark matter search

2021 ◽  
Vol 16 (11) ◽  
pp. P11026
Author(s):  
P. Agnes ◽  
S. De Cecco ◽  
A. Fan ◽  
G. Fiorillo ◽  
D. Franco ◽  
...  
Keyword(s):  
Dark Matter ◽  
Light Emission ◽  
Liquid Argon ◽  
Pulse Shape Discrimination ◽  
Time Response ◽  
Small Scale ◽  
Delayed Response ◽  
Dark Matter Search ◽  
Drift Field ◽  
Time Projection

Abstract The scintillation time response of liquid argon has a key role in the discrimination of electronic backgrounds in dark matter search experiments. However, its extraordinary rejection power can be affected by various detector effects such as the delayed light emission of TetraPhenyl Butadiene, the most commonly used wavelength shifter, and the electric drift field applied in Time Projection Chambers. In this work, we characterized the TetraPhenyl Butadiene delayed response and the dependence of the pulse shape discrimination on the electric field, exploiting the data acquired with the ARIS, a small-scale single-phase liquid argon detector exposed to monochromatic neutron and gamma sources at the ALTO facility of IJC Lab in Orsay.

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.

Direction-Sensitive Dark Matter Search Using Micro Time-Projection-Chamber

2016 ◽  
Author(s):  
Ryota Yakabe ◽  
Yushiro Yamaguchi ◽  
Kentaro Miuchi ◽  
Kiseki Nakamura ◽  
Shota Nakaura ◽  
...  
Keyword(s):  
Dark Matter ◽  
Time Projection Chamber ◽  
Dark Matter Search ◽  
Time Projection

scholarly journals Probing energetic light dark matter with multi-particle tracks signatures at DUNE

2020 ◽  
Vol 2020 (11) ◽  
Author(s):  
Albert De Roeck ◽  
Doojin Kim ◽  
Zahra Gh. Moghaddam ◽  
Jong-Chul Park ◽  
Seodong Shin ◽  
...  
Keyword(s):  
Dark Matter ◽  
Liquid Argon ◽  
Sensitivity Study ◽  
Particle Identification ◽  
Dark Sector ◽  
Final State ◽  
Signal Sensitivity ◽  
The One ◽  
Neutrino Experiments ◽  
Time Projection

Abstract The search for relativistic scattering signals of cosmogenic light dark matter at terrestrial detectors has received increasing attention as an alternative approach to probe dark-sector physics. Large-volume neutrino experiments are well motivated for searches of dark matter that interacts very weakly with Standard Model particles and/or that exhibits a small incoming flux. We perform a dedicated signal sensitivity study for a detector similar to the one proposed by the DUNE Collaboration for cosmogenic dark-matter signals resulting from a non-minimal multi-particle dark-sector scenario. The liquid argon time projection chamber technology adopted for the DUNE detectors is particularly suited for searching for complicated signatures owing to good measurement resolution and particle identification, as well as dE/dx measurements to recognize merged tracks. Taking inelastic boosted dark matter as our benchmark scenario that allows for multiple visible particles in the final state, we demonstrate that the DUNE far detectors have a great potential for probing scattering signals induced by relativistic light dark matter. Detector effects and backgrounds have been estimated and taken into account. Model-dependent and model-independent expected sensitivity limits for a DUNE-like detector are presented.

scholarly journals Direction-sensitive dark matter search with a low-background gaseous detector NEWAGE-0.3b”

2021 ◽  
Author(s):  
Tomonori Ikeda ◽  
Kiseki Nakamura ◽  
Takuya Shimada ◽  
Ryota Yakabe ◽  
Takashi Hashimoto ◽  
...  
Keyword(s):  
Dark Matter ◽  
Cross Section ◽  
Confidence Level ◽  
Energy Region ◽  
Time Projection Chamber ◽  
Emission Rate ◽  
Dark Matter Search ◽  
Low Background ◽  
Upper Limit ◽  
Time Projection

Abstract NEWAGE is a direction-sensitive dark matter search using a low-pressure gaseous time projection chamber. A low alpha-ray emission rate micro pixel chamber had been developed in order to reduce background for dark matter search. We conducted the dark matter search at the Kamioka Observatory in 2018. The total live time was 107.6 days corresponding to an exposure of 1.1 kg⋅days. Two events remained in the energy region of 50-60 keV which was consistent with 2.5 events of the expected background. A directional analysis was carried out and no significant forward-backward asymmetry derived from the WIMP-nucleus elastic scatterings was found. Thus a 90% confidence level upper limit on Spin-Dependent WIMP-proton cross section of 50 pb for a WIMP mass of 100 GeV/c2 was derived. This limit is the most stringent yet obtained from direction-sensitive dark matter search experiments.

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