• Lights in Motion Observing Nearby Planets with Imaging, Wavefront Sensing, Orbital Detection, and Spectroscopy 

  Thompson, William (2023-09-27)

  To place our solar system into a wider context, astronomers must study a broad sample of planets around Sun-like stars in detail. This will require a combination of indirect evidence and direct imaging, which is the focus ...
• Measuring Light Distribution of LED Sources for Hyper-Kamiokande Detector Calibration 

  Booth, Nicholas (2023-09-11)

  The Hyper-Kamiokande experiment uses water-Cherenkov detectors to study neutrino oscillation and charge conjugation parity (CP) violations with high precision. To reduce systematic errors, multi-photomultiplier tube modules ...
• Phase Dependent Variation in the Reflectivity of Kuiper Belt Object 2002 MS4 

  Peng, Jinghan (2023-09-08)

  The Kuiper Belt Objects (KBOs) are the newly-discovered solar system objects located beyond the orbit of Neptune. Observations and study of the KBOs are vital to understanding the origin and evolution of our solar system. ...
• Tidal Evolution of Dwarf Spheroidal Satellites 

  Borukhovetskaya, Alexandra (2023-08-31)

  Dwarf spheroidal galaxies populate the faintest end of the galaxy luminosity function and yet they apparently reside in massive dark matter halos. With mass-to-light ratios as high as M/L ~ 10^4 , they are the key to ...
• Searching for Dark Sectors with Proton Bremsstrahlung 

  Foroughi-Abari, Saeid (2023-08-31)

  This dissertation explores the sensitivity of high-luminosity colliders and fixed target facilities to low mass new physics in so-called dark sectors that are coupled to the Standard Model of particle physics. These new ...
• Developing Lower Cost Radiotherapy Solutions for Low and Middle Income Countries 

  O'Connell, Jericho (2023-08-30)

  Radiotherapy research often focuses on state-of-the-art methods to provide small improvements in the treatment of patients in high-income countries, while less focus is put on providing low-cost treatments suitable for the ...
• A Morphological Analysis of the Galaxy Cluster XLSSC 122 

  Leste, Ophélie Karishma (2023-08-24)

  We present a morphological analysis of the 29 spectroscopically confirmed mem- bers of the most massive galaxy cluster at z ∼ 2, XLSSC 122. The cluster was dis- covered in the XMM Large Scale Structure survey as a faint, ...
• Dust Dynamics in Protoplanetary Disks: Fables of the Sun and the Wind in the Pre- and Post-Planet-Formation Eras 

  Bi, Jiaqing (2023-08-22)

  Dust grains in protoplanetary disks are the most fundamental building blocks of planetary embryos. Therefore, they play a crucial role in the planet formation process. In this dissertation, we focus on the topic of dust ...
• Fast quantum gate design with deep reinforcement learning using real-time feedback on readout signals 

  Wright, Emily (2023-08-17)

  The design of high-fidelity quantum gates is difficult because it requires the optimization of two competing effects, namely maximizing gate speed and minimizing leakage out of the qubit subspace. We propose a deep ...
• Improvement of the efficiency and beam quality of the TRIUMF Charge State Booster 

  Adegun, Adedapo Joseph (2023-06-30)

  At the Isotope Separator and Accelerator (ISAC) facility of TRIUMF, charge state breeding of radioactive isotopes with an atomic mass greater than 30 is required before they are injected into the linear accelerator (LINAC) ...
• Characterization of the Surface Oxidation Layer of Niobium 

  Yasaei, Saba (2023-05-25)

  Niobium is widely used in quantum computing devices and charged particle accelerators, while it is in superconducting state. In these applications the niobium surface is subjected to very different electric field strengths ...
• Development of Tau Polarimetry for measuring beam polarization in e+e- colliders 

  Miller, Caleb (2023-04-26)

  The Belle II experiment is considering the addition of longitudinal polarization to the e- beam of SuperKEKB. The addition of beam polarization would allow for a number of world leading electroweak precision measurements, ...
• Unveiling hidden mergers: quantifying merger prevalence in post-starburst galaxies and the efficacy of common merger identification techniques 

  Wilkinson, Scott (2023-04-24)

  Numerical simulations and observations agree that galaxies tend to evolve from star-forming spiral galaxies to quiescent ellipticals. Post-starburst (PSB) galaxies, defined as having experienced a recent burst of star ...
• Development of enabling technologies for ultra-high dose rate and spatially fractionated radiation therapy 

  Esplen, Nolan Matthew (2023-04-21)

  Despite the important advances that have been made in radiation therapy (RT) over recent decades, there remains an ongoing demand for treatments which are capable of widening the therapeutic window. This might be achieved, ...
• Three dimensional spheroids and gold nanoparticles in combined cancer therapy 

  Bromma, Kyle W (2023-04-19)

  One of the major issues in cancer radiotherapy (RT) is normal tissue toxicity. Introduction of radiosensitizers like gold nanoparticles (GNPs) into cancer cells to enhance the local RT dose is a promising technique that ...
• Automated Optimization of the ISAC-II Heavy Ion Linac 

  Kiy, Spencer Ray (2023-04-18)

  The ISAC (Isotope Separator and ACcelerator) II superconducting heavy ion linac at TRIUMF enables delivery of radioactive ion beams for various nuclear physics experiments at TRIUMF. Since the installation and commissioning ...
• Model Coupled Accelerator Tuning 

  Shelbaya, Olivier (2023-02-27)

  Relativistic charged particle optics in the context of accelerator physics have been treated using transfer matrix methods since the 1950s. The realization that a hyperellipsoidal charged particle distribution could likewise ...
• Improving the Super-Kamiokande 20-inch PMT modelling using the photosensor test facility (PTF) 

  Gousy-Leblanc, Vincent (2023-01-17)

  The Super-Kamiokande (Super-K) experiment is a water Cerenkov neutrino experiment in Japan that won a Nobel prize for discovering neutrino oscillation in 1998. Since then, the neutrino mixing angles and the mass squared ...
• Characterization of Dosimeters for Small Field Applications Including Comparisons to Monte Carlo and Treatment Planning System Computed Doses 

  Timakova, Elena (2023-01-04)

  In radiation therapy, accurately determining the dose to a patient is extremely important for optimal patient outcomes and efficient clinical flow. Under small field conditions, experimental dosimetry is difficult due to ...
• ATLAS New Small Wheel sTGC Pad Efficiency and Signal Strength 

  Brown, Leesa (2022-12-19)

  The New Small Wheel (NSW) is the latest major upgrade of the ATLAS Muon Spectrometer and was installed during LHC Long Shutdown 2 between Runs 2 and 3. The NSW replaced the previous Small Wheels in the inner end-cap ...

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