The neutrino beam used by ANNIE originates at Fermilab, where the Booster delivers 8 GeV protons to a beryllium target, producing secondary pions and kaons.
Notes on verification
Confirmed by multiple independent ANNIE collaboration papers and Fermilab BNB technical documentation describing the 8 GeV proton beam striking a beryllium target to produce pions/kaons that decay into neutrinos. [tier=unverified indep_score=0.5 clusters=1 claim_tier=everyday] [harvest 2026-09-15: +3 source(s) on new hosts; tier unverified->gold indep=1.0 clusters=3] [kind-backfill 2026-09-15: kind=empirical eligibility=high]
Sources
- Accelerator Neutrino Neutron Interaction Experiment (wikipedia)
- https://annie.fnal.gov/ (corroboration)
- https://ar5iv.labs.arxiv.org/html/1504.01480 (corroboration)
- https://arxiv.org/pdf/2508.11111 (corroboration)
- https://arxiv.org/pdf/2510.26050 (corroboration)
- https://arxiv.org/pdf/1503.01520 (corroboration)
- https://targets.fnal.gov/BNB_neutrino_beam.html (corroboration)
- https://www.osti.gov/biblio/2446889 (corroboration)