Abstract: A liquid nitrogen temperature micro-wiggler assembly consists of a stack of micro-wiggler elements. Each micro-wiggler element has a sandwich structure consisting of a non-metallic substrate, a superconducting layer on top of the substrate and a conductive layer on top of the superconducting layer. The undulating magnetic field produced by the micro-wiggler assembly, when supplied with a current, interacts with the electron beam passing through an isolated tube in the center of the micro-wiggler assembly and transverse to it, resulting in the production of optical radiation.

Abstract: A racetrack synchrotron employs semi-circular 180 degree dipole magnets having coils which are pulsed by capacitor banks for quickly raising the energy of electrons flowing within the synchrotron. The inclusion of an RF cavity or cavities ensures that the energy of electrons follows the synchronous energy as the synchronous energy increases with the magnetic field. Pulsed quadrupole magnets, along the straight sections of the racetrack, ensure transverse confinement of the electrons. An ejection kicker magnetically diverts electrons from the synchrotron for use by an external device.

Abstract: An electrical invertor circuit comprising a first common electrode and at least two secondary electrodes and means permitting an electric discharge to be established between said first electrode and any one of said second electrodes. A magnetic field is applied through the gaps between said first electrode and said secondary electrodes so as to switch the discharge from one to another of the secondary electrodes. In one arrangement there are two secondary electrodes in the form of two secondary substantially semi-annular electrodes disposed around a circular central electrode so that a rotating spoke discharge is formed. The two semi-annular electrodes are then connected to the terminals of the primary winding of an output transformer whereas a center tap of said winding is connectable to the central electrode through a D.C. power supply.