Undulator
installation, a synchrotron storage ring. It consists of a periodic structure of dipole magnets. A static magnetic field is alternating along the length of the undulator with a wavelength . Electrons traversing the periodic magnet structure are forced to undergo oscillations. So the electrons give off energy as electronmagnetic radiation. The radiation produced in an undulator is very intense and concentrated in narrow energy bands in the spectrum. The light beam is also collimated on the orbit plane of the electrons. This radiation is guided through beamlines for experiments in various scientific areas.