Not a particle physicist, but I follow it like it's my favorite TV show. Was under the impression that neutrinos only interact with other matter via the weak force, and that the only way for this interaction to happen is via a neutrino precise direct hit to an atomic nucleus. Something like 5-7 lightyears of lead only has a 50/50 chance of interacting with 1 neutrino.

They must be sending like 10¹⁵ or more neutrino particles per second through "The device, located 480 meters from a key interaction point in the LHC, comprised layers of lead and tungsten layered with emulsion. When neutrinos pass through the setup, they leave telltale marks on the emulsion layers." Curious to know more about this "device."

Neutrinos are not new. This is decades old news.

Neutrinos are wimps, or weakly interacting massive partials.

Basically they are heavy like a proton or neutron, but they pass through normal matter because they do not interact with electrons. Only in the very very rare cases that a neutrino strikes the nucleus of another atom will it produce a measurable effect.

BTW trillions of these things are passing through your body every second.