PPD-2 : Dark Matter | Matière sombre
- Marie-Cécile Piro (University of Alberta)
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Meeting ID: 930 5729 0123
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Meeting ID: 930 5729 0123
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The NEWS-G direct dark matter search experiment employs spherical proportional counters (SPCs) with light noble gases as target media to search for low-mass Dark Matter (DM). The next generation of the experiment is a 140 cm diameter SPC with a new sensor design and improved shielding, and will profit from a single-electron energy threshold to be sensitive to particle DM with a mass as low as...
As part of the ongoing search for dark matter, the NEWS-G collaboration uses a spherical proportional counter to detect WIMP interaction. The detector consists of a grounded spherical vessel filled with gas. A positive voltage is applied on a central anode, inducing a radial electric field. Energy deposited by a WIMP can cause ionization. Under the influence of the electric field, primary...
The NEWS-G experiment aims for the direct detection of low mass Weakly Interacting Massive Particle (WIMP) dark matter using Spherical Proportional Counters (SPC). At the center of the SPC, a small sensor held at high voltage drives the drift of the primary ionization and provide the amplification needed to detect sub-keV nuclear recoils down to single electrons. The ACHINOS is a novel...
NEWS-G (New Experiments With Spheres-Gas) is a rare event search experiment using Spherical Proportional Counters (SPCs). Primarily designed for the direct detection of dark matter, this technology also has appealing features for Coherent Neutrino-Nucleus Scattering (CE$\nu$NS) studies using nuclear power plants as a neutrino source.
For both applications, an important property of the gas...
DEAP-3600 is a single-phase liquid argon direct dark matter search experiment located at SNOLAB in Sudbury, Ontario. DEAP-3600 is designed to detect the nuclear recoil signal of a Weakly Interacting Massive Particle (WIMP), while using pulse-shape discrimination to remove backgrounds from argon-39 beta decay. Other sources of background include alpha decays, neutrons, and Cherenkov light. This...
DEAP-3600 is a liquid argon (LAr) based spin-independent direct dark matter search experiment. It is designed to detect nuclear recoils induced by the elastic scattering of weakly interacting massive particles (WIMPs) on argon nuclei. In addition, its large target mass and excellent ability to distinguish between electronic and nuclear recoils makes it well-suited for the detection of 5.5 MeV...
Astrophysical and cosmological observations support that dark matter constitutes more than 80% of the matter in the universe. Understanding the nature of DM will make possible to reconstruct the early universe history since all the experimental data that we have related to universe evolution comes from Big Bang nucleosynthesis era onwards.
The current Standard Model of particle physics is...
We study a model of fermionic dark matter (DM) interacting with the standard model (SM) through a Z’ mediator, the gauge boson of a U(1) extension to the SM symmetry group, to understand the mechanism responsible for the DM relic abundance in different regions of parameter space. We compare two different mechanisms for the DM production in the early universe, freeze-out and freeze-in. For...