Conveners
W-POS-J #80-107 Poster session (PPD) / Session d'affiches (PPD)
- Marie-Cécile Piro (University of Alberta)
W-POS-J #80-107 Poster session (PPD) / Session d'affiches (PPD)
- Marie-Cécile Piro (University of Alberta)
To allow for precision measurements of neutrino interactions in water Cherenkov neutrino detectors, reducing the position uncertainty on the photomultiplier tubes (PMTs) and calibration sources is necessary. This can be achieved with the photogrammetry technique. Detected PMTs in images of the detectors can be used to reconstruct a 3D model of their positions. This photogrammetry technique is...
The Light-only Liquid Xenon experiment aims to investigate scintillation and Cherenkov emission in Liquid Xenon (LXe). This is a small experiment set up consisting of 24 Hamamatsu Silicon Photomultipliers (SiPM), giving a total of 96 channels arranged in an octagonal cylinder. 92 of these channels are covered with 225 nm high pass filters which help measure Cherenkov and VUV scintillation...
We demonstrate that dark matter heating of gas clouds, hundreds of parsecs from the Milky Way Galactic Center, provides a powerful new test of dark sector interactions. As an example, we constrain ultralight dark photon dark matter, which requires a simple extension of the Standard Model (SM) by a U(1) gauge group. We place new bounds on ultralight dark photon dark matter for m ≤ 10^10 eV. An...
In the search for particle dark matter (DM), the most prominent model is the Weakly Interacting Massive Particle (WIMP). Should particle DM have some weak interaction with baryonic matter, the DM would interact with the matter found in the Sun and other massive bodies. When the DM scatters to velocities below the local escape velocity, this results in gravitational capture and subsequent...
Cherenkov radiation plays a crucial role in particle physics experiments.
This is of particular importance in water-filled neutrino detectors, where electron neutrinos are observed through the Cherenkov radiation of ultra-relativistic secondary particles created in the detector's volume. Modern simulation methods of the process that describe Cherenkov emission assume coherence of the...
ABSTRACT:
SNO+ is large multipurpose detector located at SNOLAB, Canada, Sudbury filled with liquid scintillator. The scintillator will eventually be loaded with a tellurium isotope, allowing to look for neutrino-less double beta decay which is extremely rare. This will determine if the neutrino is its own antiparticle. One of the main concerns for these rare event experiments is the...
SNO+ is a neutrino detector located 2 km underground at the deep clean lab facility - SNOLAB, in Vale’s Creighton Mine, in Sudbury ON. The primary goal of the SNO+ experiment is to search for an extremely rare, hypothesized phenomenon, neutrino-less double beta decay (0vbb) - the discovery of which will have a multitude of major implications in fundamental physics. Given the rarity of this...
The possible existence the magnetic monopole is strongly motivated by theories and extensively tested in experiments. Searches at the LHC have been exclusively conducted with proton-proton collisions. However, the LHC not only collides protons but also heavy ions. Highly relativistic ultraperipheral collisions (UPC), where the ion-ion impact parameter exceeds the ion’s diameter, act as a...
The Higgs boson was observed at the Large Hadron Collider (LHC) at CERN in 2012. Its existence confirms the Higgs field which explains how some particles have mass while others do not. Since 2012, an important task has been to search for the neutral Higgs boson’s charged siblings. In the Standard Model (SM), the Higgs boson is a massive neutral particle observed at a mass near 125 GeV. The...
Astronomical and cosmological observations strongly suggest the existence of dark matter in the Universe. The favourite candidate is the WIMP (Weakly Interacting Massive Particles) and can be detected directly via elastic scattering on the target nuclei. Physicists are relying on more innovative and sensitive detectors in hope of capturing the nuclear recoil created by this mysterious...
The NEWS-G experiment uses a spherical proportional counter filled with gas in order to detect potential dark matter particles that can ionize the gas after a nuclear recoil. The detector works by attracting the free electrons towards the center of the sphere where there is a high voltage anode inducing a radial electric field. Near the anode, the accelerated electrons then cause a Townsend...
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...
MATHUSLA (MAssive Timing Hodoscope for Ultra-Stable neutraL pArticles) is a long-lived particle (LLP) detector which would be constructed on the surface above CMS and is currently in its planning stages. This large-area detector would be composed of several layers of solid plastic scintillator, with wavelength-shifting fibers connected to silicon photomultipliers (SiPMs), allowing us to...
The major ongoing upgrade of the ATLAS detector at the Large Hadron Collider at CERN consists in the replacement of parts of its muon spectrometer. The so-called New Small Wheels (NSWs) will be covered with two detector types that must trigger on and track outgoing particles - one type is small-strip thin gap chambers (sTGCs) assembled into modules of four layers. Canadian-built sTGC modules...
From 2015 to 2018, the Large Hadron Collider (LHC) collided protons at an unprecedented center of mass energy of s=√13 TeV. The ATLAS detector recorded an integrated luminosity of 139fb$^{-1}$ of these collisions. This offers an unprecedented opportunity for physicists to test the Standard Model by measuring predicted but yet unobserved rare processes. The triboson W$\gamma\gamma$ production...
P-type point contact (PPC) high-purity Germanium detectors have gained substantial interests in the search for neutrinoless double beta decay (0νββ) due to their background-rejection capabilities and excellent energy resolution. The drift time of charge carriers in the detector can be used in determining the position of an energy deposition and identifying sources of the background. One can...
EMPHATIC (Experiment to Measure the Production of Hadrons At a Testbeam In Chicagoland) is a low-cost, table-top-sized, hadron-production experiment located at the Fermilab Test Beam Facility (FTBF) that will measure hadron scattering and production cross sections that are relevant for neutrino flux predictions. High statistics data will be collected using a minimum bias trigger, enabling...
The highest energy range of the solar neutrino spectrum is dominated by $^8$B neutrinos produced in the pp-chain in the Sun and by hep neutrinos. R.S. Raghavan, K. Bhattacharya, and others have predicted that neutrino absorption with $^{40}$Ar is a possible interaction for neutrinos with energies above 3.9 MeV. In this case, neutrino induced nuclear transitions from $^{40}$Ar to $^{40}$K are...
DEAP-3600, hosted at SNOLAB, has been designed for the search of WIMPs, Weakly Interacting Massive Particles; its target of 3.3 t of liquid argon is the largest direct detection experiment. In addition to its sensitivity to WIMPs, DEAP-3600 is sensitive to super-massive dark matter candidates with masses up to the Planck scale. At dark matter-argon cross-sections above 10^{-24} cm^2 and dark...
DEAP-3600 is a liquid argon detector designed to directly detect dark matter by searching for nuclear recoil (NR) events caused by elastically scattered weakly interacting massive particles, a prime candidate for dark matter. Pulse-shape discrimination properties of the argon allow for significant separation between electromagnetic recoil (ER) events and NR events. The majority of the events...
Longstanding evidence from observational astronomy indicates that non-luminous "dark matter" constitutes the majority of all matter in the universe, yet this mysterious form of matter continues to elude experimental detection. The study presented in this talk is part of an ongoing programme to search for dark matter production in high-energy proton-proton collisions at the Large Hadron...
The last supernova near our galaxy was in 1987. HALO-1kT will be a low background galactic Supernova detector that uses 1kT of lead as the target for supernova neutrinos and helium-3 neutron counters to detect neutrons produced from the neutrino-lead interactions. The neutrons are then effectively captured by He-3 and converted to electrical signals by the proportional counters.
As with...
Telescope Array experiment has recorded several short time bursts of air shower like events. These bursts are very distinct from conventional single showers, and are found to be strongly correlated with lightnings. We proposed these bursts represent the direct manifestation of the dark matter annihilation events within the so-called axion quark nugget model. We discuss how to test this...
Since the discovery of the Higgs boson at the LHC in 2012, no sign of new physics beyond the Standard Model has been found. The SUSY and exotic particles searches have not uncovered signs of new physics, as the model-dependent searches. In recent years, multiple unsupervised machine learning methods have been proposed to search for new physics at the LHC. This poster will explore the use of a...
The Cryogenic Underground TEst Facility (CUTE) is fully operational underground at SNOLAB. The facility can host up to six of the next generation SuperCDMS cryogenic detectors, and allows for the opportunity to search for low-mass dark matter while testing the new detectors. The SNOLAB cleanroom laboratory provides a low-background and low-cosmogenic-activation environment for CUTE operations....
