Jeremy Gaison headshot

Jeremy Gaison

Ph.D. 2021
Physics

Current Position: Linus Pauling Postdoctoral Fellow

Current Institution: Pacific Northwest National Laboratory

Advisor: Karsten Heeger

Degree Year: 2021

Dissertation Title: Measurement of the Reactor Antineutrino Spectrum of U-235 by PROSPECT and Daya Bay

Dissertation Abstract: 

Since their experimental discovery over 60 years ago, neutrinos have proven to be a fascinating means of exploring the physical universe. Through a variety of both natural and man-made sources, physicists have discovered many unusual features about these particles from their oscillation between their different flavor states to their particularly small mass. There are still many questions to answer regarding these fundamental particles, though. Among these questions is whether a possible fourth type of neutrino exists, a sterile neutrino, which could resolve a range of discrepancies between recent measurements and predictions at a variety of different energies and baselines. Precision neutrino measurements may also help to solve questions in nuclear physics and resolve previously measured spectral distortions.

The PROSPECT experiment is a 4 ton, 6Li-loaded liquid scintillator detector at Oak Ridge National Laboratory operating >10m from the High Flux Isotope Reactor, a research reactor highly enriched in 235U. The segmented design of the detector allows for unprecedented background rejection at the Earth’s surface. Here I will describe the design, construction, data taking, and analysis of PROSPECT towards its measurement of over 50,000 neutrino events and the results from both its sterile neutrino search and its precision measurement of the 235U antineutrino spectrum. Further, I will describe the analysis that combines results from the PROSPECT and Daya Bay 235U measurements and present the most precise measurement of the 235U antineutrino energy spectrum to date.

Information updated 03/11/2026

Experiments

PROSPECT

Heeger

Science goal: Precision measurements of antineutrinos, search for sterile neutrinos, & develop technology for monitoring nuclear reactors for safeguard and non-proliferation.

WL involvement: PROSPECT was designed and built at Wright Lab in collaboration with national labs and other universities.

Four people working on PROSPECT experiment in Wright Lab clean room.

Daya Bay

Heeger

Science goal: Search for and measure the yet unknown neutrino mixing angle theta13.

WL involvement: Yale had overall responsibility in the U.S. for the design and construction of the antineutrino detectors and was involved in data analysis and measurements.

Inside view of Daya Bay detector.

News

Nothing to share right now.

Please check back soon or explore our site.