Dark Sector Searches with Coherent CAPTAIN Mills

Jun 12, 2025, 2:46 PM
23m
Great Hall

Great Hall

Parallel session presentation Neutrino Masses, Mixings and Interactions Neutrino Masses. Mixings and Interactions

Speaker

Austin Schneider (Los Alamos National Laboratory)

Description

The Coherent CAPTAIN-Mills (CCM) experiment is a 10-ton liquid argon scintillation and Cherenkov detector located at the Los Alamos Neutron Science Center. Positioned 90 degrees off-axis and 23 meters from the Lujan Facility's stopped pion source, which will provide 2.25 × 10^22 protons on target over a three-year run period. The short (290 ns) duration of proton pulses delivered to the Lujan target and the delayed arrival time of spallation neutrons allows CCM to probe rare processes with very low backgrounds. With this intense flux, short pulse, and large detector mass, CCM is capable of probing a variety of dark sector models, including potential explanations for the short-baseline neutrino anomalies and searches for MeV-scale Axion-Like Particles. In this talk, I will present the latest physics and technical results from CCM, recent work on Cherenkov light identification from sub-MeV particles, and projections for CCM's full 3 year run cycle.

Primary author

Austin Schneider (Los Alamos National Laboratory)

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