Bryce Littlejohn

  • Associate Professor of Physics


Ph.D., University of Wisconsin - Madison
M.S., University of Wisconsin - Madison
B.S. Principia College

Research Interests

Experimental Nuclear and Particle Physics

Neutrino Physics 

Radiation Detector Development

Professional Affiliations & Memberships

American Physical Society

Sigma Xi Honor Society


2019 IIT Excellence in Teaching Award, College of Science

2018 IIT College of Science Dean’s Award for Junior Research 

2015 Laureate, Breakthrough Prize in Fundamental Physics

2008 NSF East Asia and Pacific Summer Institute (EAPSI) Fellowship   


"First measurement of high-energy reactor antineutrinos at Daya Bay." F. An, et. al., Daya Bay Collaboration. Phys. Rev. Lett. 129 041801 (2022)

"Search for an Excess of Electron Neutrino Interactions in MicroBooNE Using Multiple Final-State Topologies." R. Acciarri, et. al., MicroBooNE Collaboration. Phys. Rev. Lett. 128 24, 241801 (2022)

"PROSPECT-II Physics Opportunities." M. Andriamirado, PROSPECT Collaboration. J. Phys. G 49 7, 070501 (2022)

"Limits on sub-GeV dark matter from the PROSPECT reactor antineutrino experiment." The PROSPECT Collaboration. Phys. Rev. D 104 012009 (2021)

"Wavelength-shifting performance of polyethylene naphthalate films in a liquid argon environment." Y. Abraham, et. al. JINST. 16 P07017 (2021)

"Convolutional neural network for multiple particle identification in the MicroBooNE liquid argon time projection chamber." MicroBooNE. Collaboration. Phys. Rev. D 103 092003 (2021)

"Improved Short-Baseline Neutrino Oscillation Search and Energy Spectrum Measurement with the PROSPECT Experiment at HFIR." The PROSPECT Collaboration. Phys. Rev. D 103 032001 (2021)

"Supernova Burst detection with the Deep Underground Neutrino Experiment." The DUNE Collaboration. Eur. J. Phys. C 81, 423 (2021)

"Benefits of MeV-scale Reconstruction Capabilities in Large Liquid Argon Time Projection Chambers." W. Castiglioni, W. Foreman, B. R. Littlejohn, I. Lepetic, M. Malaker, A. Mastbaum. Phys. Rev. D 102 092010 (2020)

"Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab." The ArgoNeuT Collaboration. Phys. Rev. Lett 124 131801 (2020)

"A Low Mass Optical Grid for the PROSPECT Reactor Antineutrino Detector." The PROSPECT Collaboration. JINST 14 P04014 (2019)

"Demonstration of MeV-scale Physics in Liquid Argon Time Projection Chambers using ArgoNeuT." The ArgoNeuT Collaboration. Phys. Rev. D 99 012002 (2019)

"First Search for Short-Baseline Neutrino Oscillations at HFIR with PROSPECT." The PROSPECT Collaboration. Phys. Rev. Lett. 121 251802 (2018)

"Evolution of the Reactor Antineutrino Flux and Spectrum at Daya Bay." F. An, et. al.,Daya Bay Collaboration. Phys. Rev. Lett. 118 251801 (2017)


» About Fermilab Short-Baseline Neutrino Program
» About Daya Bay

Professional Activities

2021 High Energy Physics Snowmass Community Planning Exercise: Neutrino Sub-Group Convener

2019 Instructor, International Neutrino Summer School 2019 at Fermilab

2016-Present: Grant Panel Reviewer, DOE Office of Science

2015-Present: Peer Reviewer, Phys. Rev. Lett.; Phys. Rev. D; Journal of Instrumentation; J. Phys. G

2015-Present: Quoted in press articles in Gizmodo, Physics Magazine, WTTW, and other Chicago-area publications

2012-Present: Conference Organizer for various local and international conferences


Experimental neutrino physics, nuclear reactor physics, applied neutrino physics for nuclear non-proliferation.

Media Appearances