4 ms·
You can't make a directed neutrino beam because the direction they're emitted in a reaction is random. That includes particle accelerators which make neutrinos
by lopmotr 6y ago
You can't make a directed neutrino beam because the direction they're emitted in a reaction is random. That includes particle accelerators which make neutrinos by colliding other particles. A single reaction product comes out in a random direction even though the momentum and energy of them all together are conserved.
- gus_massa 6y agoThe beam is directional. From https://home.cern/science/accelerators/cern-neutrinos-gran-sasso https://home.cern/science/accelerators/cern-neutrinos-gran-s... > To create the neutrino beam, a beam of protons from the Super Proton Synchrotron at CERN was directed onto a graphite target. The collisions created particles called pions and kaons, which were fed into a system of two magnetic lenses that focused the particles into a parallel beam in the direction of Gran Sasso. The pions and kaons then decayed into muons and muon neutrinos in a 1-kilometre tunnel. At the end of the tunnel, a block of graphite and metal 18 metres thick absorbed protons as well as pions and kaons that did not decay. Muons were stopped by the rock beyond, but the muon neutrinos remained to streak through the rock on their journey to Italy.
- lopmotr 6y agoCorrected. Thanks.