Bryce Littlejohn

  • Assistant 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   


Extraction of the U235 and Pu239 Antineutrino Spectra at Daya Bay

F. An, et. al., Daya Bay Collaboration. 

Phys. Rev. Lett 123 111801 (2019).

A Low Mass Optical Grid for the PROSPECT Reactor Antineutrino Detector
The PROSPECT Collaboration

JINST 14 P04014 (2019).

Measurement of the Antineutrino Spectrum from U-235 Fission at HFIR with PROSPECT
The PROSPECT Collaboration

Phys. Rev. Lett. 122 251801 (2019).

Diagnosing the Reactor Antineutrino Anomaly With Global Antineutrino Flux Data

C. Giunti, Y. F. Li, B. R. Littlejohn, and P. T. Surukuchi

Phys. Rev. D 99 073005 (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)

Impact of Fission Neutron Energies on Reactor Antineutrino Spectra
B. R. Littlejohn, A. Conant, D. A. Dwyer, A. Erickson, I. Gustafson, K Hermanek
Phys. Rev. D 97 073007 (2018).

Prospects for Improved Understanding of Isotopic Reactor Antineutrino Fluxes
Y. Gebre, B. R. Littlejohn, P. T. Surukuchi.
Phys. Rev. D 97 013003 (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).

Design and Construction of the MicroBooNE Detector
R. Acciarri, et. al., MicroBooNE Collaboration.
JINST 12 P02017 (2017).

The PROSPECT Physics Program
J. Ashenfelter, et. al., PROSPECT Collaboration.
J. Phys. G.43 113001 (2016).

Measurement of the Reactor Antineutrino Flux and Spectrum at Daya Bay
F. An, et. al., Daya Bay Collaboration.
Phys. Rev. Lett. 116 061801 (2016).

Observation of Electron Antineutrino Disappearance at Daya Bay
F. An, et. al., Daya Bay Collaboration
Phys. Rev. Lett. 108 171803 (2012)


» 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.