• Comprehensive Ionization Model Development for the FEBIAD Ion Source and Its Application for TRIUMF’s Radioactive Ion Beam Program 

  Maldonado Millan, Fernando Alejandro (2022-07-28)

  Radioactive isotopes enable advanced medical treatments and the study of nuclear structure, nuclear astrophysics, and fundamental symmetries. TRIUMF, Canada’s Particle Accelerator Centre, generates radioactive isotope ...
• Search for Dark Matter Produced in pp Collisions with the ATLAS Detector 

  MacDonell, Danika (2022-07-18)

  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 ...
• Nanoplasmonics with Dispersive and Lossy Media 

  Peck, Ryan (2022-05-24)

  This thesis focuses on the physics of nanoplasmonic systems for dispersive and lossy media. Gold nanoparticles in P3HT (poly(3-hexylthiophene)) and PMMA (poly(methyl methacrylate)) are analyzed both theoretically and ...
• Advanced wavefront sensing and astrometric techniques for the next generation of extremely large telescopes 

  Taheri, Mojtaba (2022-04-29)

  The new generation of giant ground-based telescopes will see their first light this decade. These state-of-the-art facilities will significantly surpass the resolving power of modern space-based observatories such as the ...
• Simulating the universe: the evolution of the most massive galaxies 

  Rennehan, Douglas (2022-04-19)

  The cores of galaxy clusters contain the most massive galaxies in the Universe, the brightest cluster galaxies. These galaxies are unique compared to their counterpart galaxies outside of clusters as they have much ...
• Solving Navier-Stokes equations in protoplanetary disk using physics-informed neural networks 

  Mao, Shunyuan (2022-01-07)

  We show how physics-informed neural networks can be used to solve compressible \NS equations in protoplanetary disks. While young planets form in protoplanetary disks, because of the limitation of current techniques, direct ...
• Conceptual design of the spin rotator for the SuperKEKB High Energy Ring 

  Peng, Yuhao (2022-01-04)

  This project focuses on the conceptual design of the spin rotator for a proposed electron polarization upgrade of the SuperKEKB. The goal is to achieve the longitudinal electron polarization at the interaction point (IP). ...
• Noise waveform generation using GANs and charged particle identification using pulse shape discrimination in the belle II electromagnetic calorimeter 

  Beaubien, Alexandre (2021-12-23)

  This thesis investigates the use of generative adversarial networks (GANs) as an alternative method to simulate noise waveforms for Belle II CsI(Tl) calorimeter crystals. Presented is a deep convolutional GAN (DCGAN) ...
• Dwarfs among giants: exploring environmental impacts on dwarf galaxies with the solo survey 

  Higgs, Clare (2021-12-02)

  This thesis attempts to untangle, as best as possible, the importance of internally-driven evolutionary mechanisms relative to externally-driven effects, in shaping the structure and properties of the smallest observable ...
• Sensing and emission in optical cavities 

  Aydin, Deniz (2021-11-19)

  This work encompasses a study of fibre optic devices and micro-resonator cavities and their use as strain sensors, interferometers, and eventually as light sources. We demonstrate the use of a pi-shifted fibre Bragg grating ...
• Search for dark Higgs boson production in pp events at √s = 13 TeV with the ATLAS detector at the LHC 

  Wright, Benjamin (2021-11-18)

  This thesis presents the design of a signal region, as well as two control regions to constrain the tt ̄ background, in the search for the theorized dark sector process qq ̄ → Z′∗ → Z′s with s → W W → qq ̄lν and Z′ → ...
• Ab initio approaches to nuclear structure, scattering and tests of fundamental symmetries 

  Gennari, Michael (2021-08-31)

  In recent decades, the accessibility of nuclear physics has been greatly improved due to the advent of modern supercomputers, as well as theoretical developments in effective field theory and ab initio (first--principles) ...
• The origin of vertical structure in a simulated galactic disk 

  Loewen, Nicholas (2021-08-18)

  We use the APOSTLE simulation suite to study the formation of galactic disks, in order to better understand the origin of their vertical structure. We select a disk-dominated Milky Way analogue galaxy from the simulation ...
• Constraints on dark matter models using a fast simulation of the ATLAS detector 

  Taylor, Samantha H. (2021-08-13)

  Data collected at the LHC are analyzed by the ATLAS collaboration for evidence of dark matter. In this thesis, a fast simulation of the ATLAS detector response using the Delphes software is assessed for dark matter models ...
• Search for supersymmetry in final states with multiple bottom quarks with the ATLAS detector 

  Ghasemi Bostanabad, Meisam (2021-07-09)

  The theoretical development of the Standard Model in the 1960s and 1970s has led to the discovery of its missing piece, the Higgs boson, at the ATLAS experiment (together with its sister experiment, CMS) at the Large Hadron ...
• Application of machine learning for energy reconstruction in the ATLAS liquid argon calorimeter 

  Polson, Lucas A. (2021-07-06)

  The beam intensity of the Large Hadron Collider will be significantly increased during the Phase-II long shut down of 2024-2026. Signal processing techniques that are used to extract the energy of detected particles in ...
• Simulation of the TRIUMF Proton Therapy facility for applications to 3D printing in radiotherapy 

  Lindsay, Clayton Daniel (2021-04-29)

  Proton therapy, a relatively young modality in radiation therapy, has proven useful in cases where a sharp dose gradient or low secondary irradiation is required. In Canada proton therapy it was performed at the TRIUMF ...
• Optimization of reconstruction methods and injected activity for whole body [18F]FDG PET/CT imaging 

  Hart, Alexander (2021-04-12)

  [18F]Fluorodeoxyglucose ([18F]FDG) Positron Emission Tomography/Computed Tomography (PET/CT) imaging is a powerful tool in the diagnosis of cancer and subsequent treatment planning. New state-of-the-art PET/CT scanners ...
• Search for dark matter produced in association with a Z boson in the ATLAS detector at the Large Hadron Collider 

  McLean, Kayla Dawn (2021-03-01)

  This dissertation presents a search for dark matter particles produced in association with a Z boson in proton-proton collisions. The dataset consists of 139 fb^{-1} of collision events with centre-of-mass energy of 13 ...
• Mass assembly in star formation via interstellar filaments 

  Chen, Michael Chun-Yuan (2021-01-28)

  Understanding how diffuse molecular clouds at large scales (~10 pc) assemble mass into dense, star-forming cores at small scales (~ 0.1 pc) is crucial to building a holistic theory of star formation. While recent observations ...

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