Intro

I am a PhD candidate studying physics at Stanford University. At SLAC National Accelerator Laboratory, I work on observational cosmology research with the Simons Observatory in Chile. I am interested in how cutting-edge computational tools can be used to study the history of our Universe and the fundamental laws of nature.

Before Stanford, I worked on experimental high energy physics research for the ATLAS Experiment at CERN during my master's at the University of Cambridge and my bachelor's at Harvard University.

I am also pursuing a graduate certificate in policy analysis at Stanford.

Research

At Stanford University, I am working towards a PhD in the observational cosmology group under the supervision of Prof. Zeesh Ahmed. At SLAC National Accelerator Laboratory, we are working on commissioning the detectors and cryogenic readout system for the Simons Observatory in Chile. The observatory will study the cosmic microwave background over the coming decade and provide some of the strongest constraints to date on the growth of structure in our Universe and on the presence of primordial gravitational waves, which would be evidence for a period of rapid expansion following the Universe's creation.

While at the University of Cambridge, I worked on the ANUBIS project under the supervision of Prof. Oleg Brandt. This project proposes installing a new set of particle detectors to the ATLAS Experiment of the Large Hadron Collider at CERN, either along its cavern's ceiling or within its service shaft. The suite of simulations that I developed showed that these detectors would dramatically increase the ATLAS Experiment's sensitivity to beyond the Standard Model long-lived particles — an exciting development in the search for new physics.

At Harvard University, I worked on upgrades to the ATLAS Experiment's muon spectrometer under the supervision of Prof. Melissa Franklin. These upgrades will enhance the experiment's ability to discover new physics in the upcoming era of the high-luminosity Large Hadron Collider. I developed data analysis tools for the New Small Wheels which helped test the new detectors and ensure that they were meeting their required performance specifications. These new detectors were successfully installed to the experiment prior to the Large Hadron Collider's third run of data collection.

Throughout my journey, I have been fortunate to have been advised by a number of incredible professors, postdocs, and graduate students who have shaped my scientific career. I have tried my best to pay this forward as a teaching assistant for physics and computer science courses at Stanford University, the University of Cambridge, and Harvard University.

I also give public tours of SLAC National Accelerator Laboratory.

Publications

Publications

  • Bhandarkar, T., et al. Simons Observatory: Characterization of the Large Aperture Telescope Receiver. Preprint (2025). https://arxiv.org/abs/2501.09241
  • Satterthwaite, T. P., et al. The Simons Observatory: Studies of Detector Yield and Readout Noise From the First Large-Scale Deployment of Microwave Multiplexing at the Large Aperture Telescope. Proceedings, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII (2024). https://doi.org/10.1117/12.3019196
  • ATLAS Collaboration. The ATLAS Experiment at the CERN Large Hadron Collider: A Description of the Detector Configuration for Run 3. Journal of Instrumentation 19, P05063 (2024). http://doi.org/10.1088/1748-0221/19/05/P05063
  • ATLAS Collaboration. Investigating the impact of 4D Tracking in ATLAS Beyond Run 4. Public Note, CERN (2023). https://cds.cern.ch/record/2870326
  • Satterthwaite, T. P. Sensitivity of the ANUBIS and ATLAS Detectors to Neutral Long-Lived Particles Produced in pp Collisions at the Large Hadron Collider. Master's thesis, University of Cambridge (2022). https://cds.cern.ch/record/2839063
  • Maksimova, N. A., Garrison, L. H., Eisenstein, D. J., Hadzhiyska, B., Bose, S., Satterthwaite, T. P. AbacusSummit: A Massive Set of High-Accuracy, High-Resolution N-Body Simulations. Monthly Notices of the Royal Astronomical Society 508, 3 (2021). https://doi.org/10.1093/mnras/stab2484
  • Satterthwaite, T. P. An Improved Charged Particle Track Reconstruction Algorithm for the Micromegas Detectors of the New Small Wheel for the ATLAS Experiment at the Large Hadron Collider. Bachelor’s thesis, Harvard College (2021). https://cds.cern.ch/record/2766672

Selected Presentations

  • Satterthwaite, T. P. Probing the Large-Scale Structure of the Universe Using the Simons Observatory. Colloquium. NOIRLabs South Colloquium Series, La Serena, Chile, 31 January 2025.
  • Satterthwaite, T. P. Crosstalk in TES Microwave Frequency Multiplexing Readout Systems. Contributed Talk. CMB Calibration 2024 @ University of Milano-Bicocca, Milan, Italy, 7 November 2024.
  • Satterthwaite, T. P. The Simons Observatory: Studies of Detector Yield and Readout Noise From the First Large-Scale Deployment of Microwave Multiplexing at the Large Aperture Telescope. Poster. SPIE Astronomical Telescopes + Instrumentation, Yokohama, Japan, 19 June 2024.
  • Satterthwaite, T. P. Sensitivity of the Proposed ANUBIS Experiment to BSM LLPs at the LHC. Contributed Talk.Twelfth Workshop of the LLP Community, CERN/Remote, 3 November 2022.
  • Satterthwaite, T. P. Sensitivity of the ANUBIS Detector with Various Geometries to Beyond the Standard Model Long Lived Particles. Contributed Talk. Eleventh Workshop of the LLP Community, CERN/Remote, 1 June 2022.
  • Satterthwaite, T. P. Studies of Neutral Long-Lived Particles at ANUBIS. Poster. Cavendish Graduate Student Conference, University of Cambridge, Cambridge, England, 25 November 2021.

In the Press

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while (!deck.isInOrder()) {
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