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How do you detect elementary particles? What do you aim your detector at? What's a detector physically? How do you know that a particle "happened", if (I assume) you can't see it? Is the process somehow indirect?

Videos about LHC talk a lot about pre-collision, but in little detail about what happens after.

I'm not a physicist, so simple explanation would be greatly appeciated.

grzesiubdg
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  • Maybe my answer here will help https://physics.stackexchange.com/questions/273032/what-exactly-is-a-photon/273180#273180 , also this https://physics.stackexchange.com/questions/535739/can-elementary-particles-be-explained-adequately-by-a-wave-only-model/535755#535755 – anna v Jan 25 '23 at 12:10
  • Have you heard of the Geiger counter? This is one of the simplest particle detectors. Of course, those at the LHC are much more sophisticated, but the key principle is similar: measuring the energy deposit by the particle in a certain medium. – Martino Jan 25 '23 at 12:18
  • WP. – Cosmas Zachos Jan 25 '23 at 15:22

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