the particle accelerator:How does it work? and it has to use magnifying equipment otherwise you can’t see these tiny particles and therefore not study them?

the particle accelerator:How does it work? and it has to use magnifying equipment otherwise you can’t see these tiny particles and therefore not study them?

Asker: Janpieter, 24 years old

Answer

A) Accelerate a particle.
To this end, a force must be exerted on the particle for several seconds. This is done by appropriate electric fields, so that the moving – and accelerating – particle is accelerated further and further. So the particle must be electrically charged to undergo those fields. The particle must also retain that charge during the entire acceleration process: so only electrons, protons or sufficiently stable ions are eligible. The particles must not be slowed down, so they must move in a vacuum tube. Because charged particles are deflected in a magnetic field, they can be made to flow into a (virtually) circular tube and thus accelerate further with each passage: this gives the circular accelerators, such as in CERN. Rectilinear accelerators also exist, the largest 3 km long (Stanford, California)

B) Detect particle

It is a misconception that one can “see” those elementary particles as one sees a bacterium, through a microscope. In a microscope one can only see objects no smaller than the wavelength of light and elementary particles are a billion times smaller. They are therefore perceived indirectly, because their charge and great speed initiate a process that we can eventually see, or make visible via computer software on a computer screen. The particle accelerators are therefore surrounded by a battery of detectors to detect the presence, speed and direction of those charged particles.

You can see this on the CERN site:

http://www.google.be/images?client=firefox-a&rls=org.mozilla:en-US:official&channel=s&hl=nl&q=CERN&um=1

Clicking on an image enlarges it and provides a short comment

Answered by

prof. French Cerulus

physics, especially classical theoretical mechanics, electromagnetism, quantum mechanics, history of physics .

the particle accelerator:How does it work?  and it has to use magnifying equipment otherwise you can’t see these tiny particles and therefore not study them?

Catholic University of Leuven
Old Market 13 3000 Leuven
https://www.kuleuven.be/

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