Hello and welcome to my personal website! My name is David Gallacher (he/him) and I'm a PhD student at McGill University in Montreal, Canada. I am studying particle physics at McGill university working with Dr. Thomas Brunner as part of the Brunner Neutrino Lab. I moved here recently from Ottawa, Ontario, where I lived for 9 years while attending Carleton University. During my time in Ottawa, I completed an honours BSc in Physics and a MSc in Particle Physics, my supervisor for both BSc and MSc theses' was Dr. Mark Boulay. Over the years in Ottawa I worked in various roles in restaurants; as a cook, bartender, server, and supervisor, around the city and developed a deep love for food and cooking that I enjoy to share with others. Since early 2017 I have been vegan, and I've adopted cooking tasty vegan food for others as my main form of activism.
The purpose of this website is to share some information about myself, my physics research interests and personal projects. To read about my physics research projects, see some recipes, or to read my personal blog, see my Interests section.
My current research interests are centred around light detection techniques for liquid noble detectors. Liquid noble detectors are scintillation detectors which employ condensed noble gasses such as xenon and argon, the two most popular media. These detectors are used to perform detailed measurements for particle interactions, and because they are easy to purify, they are the perfect target material for rare event search experiments. The photosensor technology of choice for upcoming experiments are called “Silicon Photomultipliers” or SiPMs for short. Testing and characterizing these devices in the cryogenic environment of liquid noble detectors (87-170 K) is one of the focus areas for my research.
I am currently at McGill University, working as the run co-ordinator for a liquid xenon experiment called “LoLX”, where I am responsible for maintaining the data-acquisition system, organizing data-taking, and developing analysis and data-readout software. LoLX, or “light only liquid xenon” is a small-scale (10 cm) liquid xenon detector which employs 96 SiPM devices to collect xenon scintillation light. LoLX aims to perform detailed characterization measurements of SiPM noise properties in a liquid xenon environment, study novel background rejection techniques for future liquid xenon detectors, such as nEXO, and to measure the scintillation timing properties of liquid xenon, which may be used to improve existing PET scanners.
For more details on specific projects I'm working on now in the past, check out my physics page. If you want to reach out and collaborate on a project, please see my contact info below!
To stay up-to-date on my research work, follow me on ResearchGate!
Click the button below to download my full CV.