Giant underground neutrino detector brings scientists closer to cracking the neutrino puzzle

Jun 13, 2026 1 Replies

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Giant underground neutrino detector brings scientists closer to cracking the neutrino puzzle Date: June 12, 2026 Source: Chinese Academy of Sciences Headquarters Summary: Deep beneath the ground in China, the massive JUNO neutrino observatory has delivered its first major scientific breakthrough, achieving one of the most precise measurements yet of how elusive neutrinos change as they travel. Using just 59 days of data, researchers sharply improved measurements of key neutrino properties, boosting confidence that JUNO can tackle one of particle physics' biggest mysteries: determining the true mass hierarchy of neutrinos.



Wow Quote: " 20,000 20-inch photomultiplier tubes (PMTs), 25,600 3-inch PMTs, "



I only have 2..


Three inch diameter PMT's are pretty big, as PMT's go. 20-inch units are freakishly large, but if you need a lot of photo-cathode area, that's how you get it.

It's interesting that they have got it to work. Real results might be a lot more interesting.

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