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Trang Bui8/19/24, 10:50 AM
DEAP-3600 is one of the leading candidates in the race of searching for dark matter. The detector uses 3.3 tonnes of liquid argon for the direct detection of dark matter. Scintillation events in the liquid argon (LAr) are detected by 255 photomultiplier tubes (PMTs). Pulse shape discrimination (PSD) techniques are employed to differentiate electromagnetic background events, from the nuclear...
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Cody O'Neill (SNO+)8/19/24, 11:00 AM
Inverse beta decay plays an integral role in detecting reactor antineutrinos and in the early detection of supernovae with SNO+ detector. In this process antineutrinos and protons interact weakly, resulting in the production of positrons and free neutrons. The neutrons subsequently capture on hydrogen, forming deuterium and emitting a 2.2 MeV gamma photon. To calibrate the detector's response...
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Kaan Sun (Queen's University)8/19/24, 11:10 AM
The High Energy Light Isotope eXperiment (HELIX), is a balloon borne experiment that is on measuring the flux of different cosmic ray isotopes. Objective of HELIX is primarily to measure the ratio of Be_10 and Be_9 fluxes to study the propagation of cosmic rays. HELIX had around 6 days of flight in 2024 from Kiruna, Sweden, collecting 200M instances of cosmic ray events. Raw data collected...
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Emma Acres (Queen's University)8/19/24, 11:20 AM
Astroparticle Physics is an exciting science at the forefront of answering fundamental questions about the Universe. The public can be intimidated by this field, as it is not a topic traditionally included in one’s typical education. Nevertheless, the field needs continued exposure to gain interest from up-and-coming scientists. This summer, I addressed this gap between physicists and the...
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Alex Lau8/19/24, 11:30 AM
Many current theories about physics beyond the Standard Model predict the existence of long-lived particles (LLPs) that could be produced by the LHC. As they decay a macroscopic distance away from their production point, the ability of currently installed detectors to identify neutral LLPs is limited. The proposed MATHUSLA experiment, once installed above the CMS detector, would use layers of...
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Lazar Paroski (SNOLAB / Queen's University)8/19/24, 11:40 AM
This summer, I designed a cooling loop for the nEXO photomultiplier tube (PMT) testing setup and enhanced Python scripts for analyzing PMT rate data. For the cooling loop, I conducted various calculations to select the optimal design, compiled a detailed bill of materials, and ensured all necessary components were ordered. Additionally, I stress-tested the Python scripts, improving performance...
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Emilia Topp-Johnson (SNOLAB)8/19/24, 11:50 AM
As dark matter detection efforts expand into lower energies, events exceeding the frequency and characteristics of predicted background noise have been detected. So named Low Energy Excess, understanding the source and features of these events is important to improve data analysis and design in low-threshold cryogenic experiments, and is a key objective of the current HVeV detector run at...
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Yusuf Ahmed (Research Student)8/19/24, 12:00 PM
Mitigating the impact of ionizing radiation is critical for realizing fault-tolerant superconducting quantum computers and quantum sensors for low-mass particle search. I present a new experiment at SNOLAB's CUTE facility that will primarily study the impact of ionizing radiation on superconducting qubits coherence, in addition to other initiatives to mitigate decoherence sources.
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Eliot Raschetti8/19/24, 1:45 PM
Demonstrating the Majorana nature of the neutrino by observing a neutrinoless double beta decay would be a significant progress in modern physics. It could explain the asymmetry between matter and antimatter and confirm that the neutrino is its own antiparticle. Such a rare phenomenon needs significant efforts and advanced facilities to be observed. The nEXO international collaboration is a...
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Joshua Himmens (TRIUMF)8/19/24, 1:55 PM
The ATLAS detector records proton collisions at the Large Hadron Collider, where protons are accelerated to 99.999999% of the speed of light to probe our understanding of physics at the high energy frontier. Critical to the analysis of ATLAS data is event reconstruction, where we associate calorimeter and tracker signals to determine which particles caused them, with how much energy, and...
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Keegan Paleshi (Laurentian University)8/19/24, 2:05 PM
Radon is a significant problem for various analysis at SNO+. Fundamentals of radon and its importance to sno+ will be discussed, as will radon assays and radon mitigation R&D.
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Ayesha Iqbal (Laurentian University)8/19/24, 2:15 PM
DEAP-3600 is searching for WIMP dark matter with a 3.3 ton single phase liquid argon (LAr) target, 2070 m underground at SNOLAB in Sudbury, Canada. A newly upgraded neck install has been performed this summer, concluding the last stretch of detector upgrades to mitigate previously identified background radiation. Details of the upgrades will be presented in this talk.
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Zach Charlesworth (TRIUMF)8/19/24, 2:25 PM
SiPMs are single photon detectors that will be used to detect the fluorescence of magnetically trapped hydrogen in the HAICU experiment at TRIUMF. HAICU's goals include the development of laser cooling and atomic interferometry with the lightest atom. Room temperature characterization is useful for determining the key properties of a new SiPM device. These properties include but are not...
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Mr Florent Thibault (Université Concordia)8/19/24, 2:35 PM
This summer, I've been working on modifying Holodeck, a public python "Massive Black-Hole Binary Population Synthesis for Gravitational Wave Calculations", in order explore a new formation channel of supermassive black holes. Classically, supermassive black holes form from the multiple galaxy mergers and the merger of the black holes in their center. This "exotic" formation channel starts with...
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Julien Hacot-Slonosky (McGill University)8/19/24, 2:45 PM
The proposed future experiment nEXO aims to find neutrino-less double beta decay in liquid xenon. A critical component of nEXO is the silicon photomultipliers (SiPMs) used to detect the light emitted by the decay. To understand how the SiPMS will behave in nEXO, a characterization of them at liquid xenon temperature, -100 C, is necessary. Fortunately, characterization at -40 C is predictive of...
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Thomas Hepworth8/19/24, 3:35 PM
Measurements of the neutron electric dipole moment (EDM) place severe constraints on new sources of CP violation beyond the standard model. The TRIUMF UltraCold Advanced Neutron (TUCAN) EDM experiment aims improve the measurement of the neutron EDM by a factor of 10 compared to the world's best measurement. The experiment must be conducted in a magnetically quiet environment. A magnetically...
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Wasi Naqvi (UBC Okanagan/ National Research Council Canada)8/19/24, 3:45 PM
The Cosmological Advanced Survey Telescope for Optical and uv Research(CASTOR) has been undergoing detector testing for the new CIS-303 detectors. Understanding the detector effects and optimizing CASTOR’s capabilities is a critical element needed to prepare the mission for launch by the end of this decade. To this end, A simulation pipeline was developed to generate in-flight simulation and...
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Tom Wu (University of Toronto)8/19/24, 3:55 PM
SuperCDMS (Cryogenic Dark Matter Search) is a dark matter direct detection experiment at SNOLAB; while the construction is underway, the Simulations group aims to build a model that reconstructs the energy deposition in an event based on the output of the detector electronics. An unknown delay time exists between the energy deposition and the peak of the measured pulse, which I aimed to model....
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Alex Hayes (University of Manitoba)8/19/24, 4:05 PM
The Scintillating Bubble Chamber (SBC), a dark matter direct-detection experiment, aims to detect bubbles produced in a superheated liquid target. To achieve this, the chamber is monitored by cameras and illuminated by flashing LEDs. Outside the target volume, silicon photo-multipliers (SiPMs) capture scintillation light which can be used to identify non-dark matter interactions. The SiPMs,...
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Nelson Zhou (SNOLAB/Queen's)8/19/24, 4:15 PM
This analysis focused on the unidentified events in the middle of the SNO+ detector caused by activities from the neck. Because of the nature of geometry and material of the neck, it was postulated that many events reconstructed in the middle of detector are a product of the complexities of the neck. This analysis attempted to account for those events in several ways. First, calculations were...
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Emilio Yahir De La Cruz Navarro (McGill University)8/19/24, 4:25 PM
The nEXO experiment aims to detect neutrinoless double beta decay $(0\nu\beta\beta )$ in 5 tonnes of liquid xenon (LXe) inside a time projection chamber, isotopically enriched to 90% in the double-beta decaying isotope $^{136}\mathbf{Xe}$ . One beneficial feature of LXe is the potential identification of the $0\nu\beta\beta$ decay daughter ($^{136}\mathbf{Ba}$) providing the ultimate...
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Danica Levesque (SNOLAB)8/19/24, 4:35 PM
SNO+ is a 12-meter diameter neutrino detector containing 780 tons of liquid scintillator, linear alkylbenzene (LAB), located 6800 feet underground. The scintillator contains a variety of chemical species to optimize the emitted light that will be captured by the photomultiplier tubes. N, N-dimethyldodecylamine (DDA) aims to improve the stability of the scintillator cocktail. Prior to its...
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Mr Alexander Vicol (SNOLAB)8/19/24, 4:45 PM
This study investigates the effectiveness of radon monitors sold publically in collaboration with Health Canada by testing the monitors underground in SNOLAB. Thirteen different types of monitors, including the EcoQube, RadonEye, and the Airthings radon monitor, were tested for accuracy and reliability in an underground environment. Results indicate significant discrepancies in the performance...
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Gabrielle Barsky-Giles (Queen's University)8/19/24, 4:55 PM
HELIX (High Energy Light Isotope eXperiment) is a balloon experiment designed to measure abundance of cosmic ray isotopes from hydrogen to neon, with a particular interest in abundances of beryllium isotopes. HELIX aim to provide essential data to study the cosmic ray propagation in our galaxy. The Drift Chamber Tracker (DCT) in HELIX is a multi-wire gas drift chamber designed to measure the...
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Emma Greenall (SBC collaboration at Queens University)8/20/24, 8:45 AM
A key challenge faced by bubble chamber experiments searching for dark matter, is that many other types of particles can also nucleate bubbles. PICO-500 will employ a photomultiplier tube based muon veto system to distinguish between bubbles from muons and DM. An array of LED drivers will use blue LEDs to calibrate and monitor the PMTs to ensure proper operation and accurate vetoing of muon...
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Matt Poser (Queen's University)8/20/24, 8:55 AM
CASST Abstract Submission
Matt Poser, July 30th 2024, Queen’s University
CASST Competition, August 19th-20th, Laurentian University, SNOLAB, McDonald InstituteThe DEAP 3600 experiment is a particle detection experiment using liquid argon scintillation and pulse shape discrimination in an effort to detect dark matter in the form of weakly interacting massive particles. The experiment...
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Aarchi Shah8/20/24, 9:05 AM
The DEAP-3600 experiment employs a vessel filled with liquid argon to detect dark matter. When argon atoms are excited by particle interactions, they emit ultraviolet light, which is subsequently detected by an array of sensors surrounding the vessel. This emitted light is analyzed to identify the nature of the interactions. During this summer, I had the opportunity to work on hardware...
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Justin Suys (snolab)8/20/24, 9:15 AM
Since 2018, the SNO+ experiment has been using Lucas Cells to measure the radon concentration in the water cavity and its cover gas system. SNOLAB has also performed radon emanation measurements from materials with Lucas Cells. These scintillation counters are primarily sensitive to alpha particles, notably those emitted from radon and its progeny. Photomultiplier tubes (PMTS) are then able to...
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Noah Fenlon (SNOLAB)8/20/24, 9:25 AM
Before we can search for neutrinoless double beta decay with the SNO+ neutrino detector, we must be sure that we understand the optics of the detector as well as possible. In particular, the 2.2 MeV and 4.4 MeV energies are of interest. The AmBe source will serve to calibrate the detector to these two energy levels. SNO+ is a very sensitive experiment, and as such, deploying a source in the...
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Sophie Gélinas (McGill University)8/20/24, 9:35 AM
The nEXO experiment is investigating the fundamental nature of the neutrino by searching for neutrinoless double beta decay in xenon-136. Its inner detector will measure light in liquid xenon using silicon photomultipliers (SiPMs) arranged on staves, rectangular support structures that line the sides of the detector. Testing of these staves must occur prior to their implementation in nEXO, and...
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Rory Macdonald (Queen's University)8/20/24, 9:45 AM
DEAP-3600 is a single-phase direct detection dark matter experiment using a 3600kg liquid Argon (LAr) target to search for Weakly Interacting Massive Particles (WIMPs)--a proposed dark matter candidate. The detector has 255 photomultiplier tubes (PMTs) that can detect photons created by events on the outside of the spherical volume of the detector.
6800ft underground, work is being...
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Gurpreet kainth (SNOLAB)8/20/24, 9:55 AM
The next crucial phase for the SNO+ experiment is addition of Te into the Acrylic Vessel(AV) to begin the search for Neutrino-less double beta decay. The Tellurium (Te) is dissolved in the liquid scintillator (LAB) with the help of Butanediol(BD) and DDA. The DDA once purified on the surface in the DDA still, will be transported underground and loaded into the TeA-Diol plant via the DDA...
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Mary Calljeja (Queen's University)8/20/24, 10:05 AM
In the search for neutrinoless double-beta decay, germanium detectors are a valuable tool. It is of interest to unterstand the position and energy of interactions inside the detectors. An accurate reconstruction of interaction position inside a detector is important for event characterization and background rejection. Novel approaches, such as machine learning, can complement or further...
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Katharine Jekic (Queen's University, McDonald Institute)8/20/24, 10:15 AM
The need for the promotion of equity in STEM is an uphill battle, one that is recognized by many academic institutions. As need for research-based, equity-promoting initiatives continues, students commonly experience what is described as the Imposter Phenomenon. It can be defined as a cyclical, distressing feeling in which an individual considers themselves less worthy of their achievements,...
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Taiki Shickele (UBC/TRIUMF)8/20/24, 1:15 PM
Neutrinoless double-beta decay is a hypothetical second-order weak process that involves the decay of a pair of neutrons into two protons and two electrons. Observation of this decay will point to a Majorana nature of the neutrino, lepton number violation, the absolute mass scale of the neutrino and possibly further new physics. Crucially, constraining neutrino masses from current and...
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37. Optimizing the TUCAN Experiment for Precision Measurements of Ultracold Neutron (UCN) PropertiesMr Kyle Drury (McMaster University)8/20/24, 1:25 PM
We investigate the experimental techniques necessary to optimize the measurement of the neutron electric dipole moment (nEDM) and free lifetime in the ultracold neutron (UCN) experiment at TRIUMF. The nEDM is measured using Ramsey’s method of oscillating fields within a magnetically shielded room, and the lifetime is obtained by counting neutrons and their decay protons within a...
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Rafid Hasan Dejrah (Ankara University)8/20/24, 1:35 PM
In modern cosmology, as we get more advanced in understanding GR there are a plethora of challenges face us related to its limitations. Furthermore, in some eras of the universe we eventually end up with real data values that do not match the ones we get from our theories and models.
It is worth mentioning that we can derive Einstein-Hilbert equations using different types of variations...
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Sharleen Chebet8/20/24, 1:45 PM
Ancient rocks are often found deep within the Earth’s crust, have been untouched for millennia. Over time, they may have accumulated minuscule amounts of dark matter particles.By analyzing these ancient minerals, scientists hope to detect traces of dark matter interactions; these ancient rocks invaluable as “paleo detectors.” By using LA-ICP-MS to analyze rocks like olivine and galena, we can...
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Jiarui Cao8/20/24, 1:55 PM
The SNO+ experiment will be a liquid scintillator detector with tellurium-130 as the decay source. SNO+ aims to detect neutrinoless double beta decay, a radioactive decay proposed by theory as an extremely rare decay whose existence could answer fundamental questions in physics. Due to the rare nature of the neutrinoless double beta decay, the mitigation of background reactions is essential...
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Cheyanne Monk (Carleton University)8/20/24, 2:05 PM
One of the likely candidates of dark matter particles are WIMPs (Weakly Interacting Massive Particles). In the efforts of detecting these WIMPs, the DEAP3600 detector has been designed for use in extremely low levels of radioactivity using a large target of liquid argon. Over this summer, hardware improvements and upgrades to the DEAP3600 argon system have been made in preparation for the...
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Irina Nitu (McGill University)8/20/24, 2:15 PM
The nEXO experiment seeks to investigate the Majorana nature of the neutrino via observation of neutrinoless double beta decay. The existence of this hypothesized process would confirm the neutrino to be its own antiparticle, giving way to physics beyond the Standard Model. To be able to observe the signal from this process, it is crucial to shield the 5000 kilograms of target xenon-136...
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Grace Champagne (Undergraduate Summer Student)8/20/24, 2:25 PM
nEXO is a proposed experiment to search for neutrinoless double beta decay in liquid xenon, utilizing ~50 000 silicon photomultipliers (SiPMs) in its photodetector system. These SiPMs are 1 by 1 cm2 squared devices capable of detecting single photons. The nEXO mass testing project is developing automated systems and methods that will be able to test large arrays of more than 100 SiPMs...
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Franco Cabral (SNOLAB)8/20/24, 2:35 PM
Liquid nitrogen produced underground is contaminated with other elements, most prominently 3.6% argon. Argon is slightly radioactive, which increases the background for the SNO+ experiment, and has a higher freezing point (84 K) than nitrogen, which creates problems as DEAP and nEXO plan to use liquid nitrogen for cooling. Zeolites are a low-cost solution to filter out argon from liquid...
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Rodrigo Pacheco (CINVESTAV)8/20/24, 2:45 PM
Neutrinos from all kinds of sources can be the cause of a noise signal in dark matter detectors, however, they can also be the medium to detect important astronomical events like Supernovae (SN) or to probe the solar activity. Most of the information that can be detected on earth about the occurrence of a SN or about the nuclear reactions happening inside the sun is in the form of neutrinos,...
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