Author(s)
|
Bordry, F (CERN) ; Bottura, L (CERN) ; Milanese, A (CERN) ; Tommasini, D (CERN) ; Jensen, E (CERN) ; Lebrun, Ph (CERN) ; Tavian, L (CERN) ; Burnet, J P (CERN) ; Bastos, M Cerqueira (CERN) ; Baglin, V (CERN) ; Jimenez, J M (CERN) ; Jones, R (CERN) ; Lefevre, T (CERN) ; Schmickler, H (CERN) ; Barnes, M J (CERN) ; Borburgh, J (CERN) ; Mertens, V (CERN) ; Aβmann, R W (DESY) ; Redaelli, S (CERN) ; Missiaen, D (CERN) |
Abstract
| Magnets are at the core of both circular and linear accelerators. The main function of a magnet is to guide the charged particle beam by virtue of the Lorentz force, given by the following expression:where q is the electrical charge of the particle, v its velocity, and B the magnetic field induction. The trajectory of a particle in the field depends hence on the particle velocity and on the space distribution of the field. The simplest case is that of a uniform magnetic field with a single component and velocity v normal to it, in which case the particle trajectory is a circle. A uniform field has thus a pure bending effect on a charged particle, and the magnet that generates it is generally referred to as a dipole. |