What is a particle detector?

A particle detector is a scientific instrument used in physics and engineering to detect, track, and identify ionising particles. These devices can measure particle attributes like energy, momentum, charge, and spin from sources such as nuclear decay, cosmic rays, and particle accelerators. Different types include Cherenkov detectors and semiconductor detectors.

What we know

• A particle detector is a device used to detect, track, and identify ionising particles produced by nuclear decay, cosmic radiation, or particle accelerators. [1, 2]
• Particle detectors can measure properties such as particle energy, momentum, spin, charge, and particle type, beyond merely registering presence. [2]
• Cherenkov detectors use Cherenkov radiation to identify and measure high-energy particles, offering advantages like fast response times and direct velocity determination. [3]
• Semiconductor detectors use materials like silicon or germanium to measure the effect of incident charged particles or photons. [5]

Where to go next

• a case in pointHow do Cherenkov detectors work?
• compared withWhat is a semiconductor detector?
• how we knowWhat are neutrinos and how do they interact with detectors?
• the bigger pictureWhat is experimental particle physics?
• what caused itHow do particle accelerators generate ionising particles?
• an unexpected connectionHow can tiny invisible particles help us image the inside of the Earth?Although neutrinos pass through normal matter almost entirely unimpeded, scientists can use them for tomography of the Earth's interior.

Sources

• [1]particle detector (Wikidata Q736634) · CC0 1.0
• [2]Particle detector · CC BY-SA 4.0
• [3]Cherenkov detector · CC BY-SA 4.0
• [4]Neutrino · CC BY-SA 4.0
• [5]Semiconductor detector · CC BY-SA 4.0