Principal Investigator:  Danielle H. Speller

Danielle Speller is a researcher in experimental nuclear and particle astrophysics.  Her work centers on understanding the nature of matter and mass through low-energy, cryogenic searches for physics beyond the standard model. Professor Speller is a collaborator on the Cryogenic Underground Observatory for Rare Events (CUORE), the CUORE Upgrade with Particle Identification (CUPID), and the Haloscope at Yale Sensitive to Axion Cold dark matter (HAYSTAC), as well as related R&D projects.  Her graduate work was with the Super Cryogenic Dark Matter Search experiment (SuperCDMS).

Professor Speller is a 2022 Sloan Fellow, and was the recipient of the 2021 APS Stuart Jay Freedman Award in Experimental Nuclear Physics.  Speller was a Park Scholar at North Carolina State University in Raleigh, North Carolina, and graduated with a double-major in physics and applied mathematics.  She earned her Ph.D. from the University of California, Berkeley, and became a postdoctoral associate at the Maruyama Lab at Yale University’s Wright Laboratory in 2017.  She joined the Physics Department at Johns Hopkins in July 2020 as an Assistant Professor of Physics. 

Postdoctoral Researchers

  • Beatriz Tapia Oregui

Graduate Students

  • Rebecca Kowalski
  • Maryam Esmat
  • Ruoxi Wang

Undergraduate Students

  • Sara Earnest


  • Tory Hu (2021)
  • Andrew Kille (2021)