What is the Betatron ?
-----accelerates a continuous beam of electrons to high speeds by means of the electric field produced by changing magnetic flux
---------A betatron is a cyclotron developed by Donald Kerst at the University of Illinois in 1940 to accelerate electrons. The betatron is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. ...
---- A particle accelerator that is used to accelerate electrons (beta particles) and collide them with a target to produce high energy radiation.
---A machine in which electrons are accelerated in a circular orbit before being deflected onto a target to produce high energy X-rays. This type of equipment usually operates at energies between 10 and 31 MEV.
The betatron consists of an evacuated tube formed into a circular loop and embedded in an electromagnet in which the windings are parallel to the loop. Alternating electric current in these windings produces a varying magnetic field that periodically reverses in direction. During one quarter of the current cycle, the direction and strength of the magnetic field at the orbit, as well as the rate of change of the field inside the orbit, all assume the values needed to accelerate electrons in one direction.
The acceleration is brought about by two forces, one acting in the direction of the electrons' motion and the other at right angles to that direction ...more
A betatron is a cyclotron developed by Donald Kerst at the University of Illinois in 1940 to accelerate electrons, but the concepts ultimately originate from Rolf Widere and previous development occurred in Germany through Max Steenbeck in the 1930s. The betatron is essentially a transformer with a torus-shaped vacuum tube as its secondary coil. An alternating current in the primary coils accelerates electrons in the vacuum around a circular path.The betatron was the first important machine for producing high energy electrons.