ABSTRACT
Detectors in particle physics detect subatomic particles. The size of particle physics experiments can range from 10s of μm to 100s of km, although typically the size of the detectors will be at the lower end of this range, with typical experiment sizes of up to a few metres. This has two important consequences: First, particle detectors are significantly larger than the Compton wavelengths ( https://www.w3.org/1998/Math/MathML" display="inline"> h / m c https://www.w3.org/1999/xlink" xlink:href="https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781003287674/2d30f441-473d-4fd1-8fb6-eb18db10ffd0/content/math1_1.tif"/> ) of the particles they need to detect. It is therefore entirely justified to designate them as ‘particle’ detectors, and it is usually sufficient for the understanding of the detector to treat the particles as quasi-classical particles.
