Particle Accelerators

A TV tube is an example of a particle accelerator. In a the TV tube, the electrons are accelerated through a potential difference of about 5000V.The electron beam hits the inside of a screenMagnetic fields formed by electromagnets deflect the beam so that it scans the screen to create an image.The Stanford Linear Accelerator(SLAC) is the largest linear accelerator in the world and is 3km long.Particles are accelerated through a potential difference of 50,000 million volts.The energy of an electron accelerated through this p.d. is 50,000 MeV (50GeV). Electrons collide with a target and produce particle-antiparticle pairs.The Large Hadron Collider (LHC) is the biggest accelerator in the world.It is a ring that has a circumference of 27km. and is located in CERN near Geneva.It accelerates particles to >7000 GeVFixed magnets all the way round the ring bend the path of the particles to keep them in the ring and stop them colliding with the walls.