TREK - device for obtaining intense relativistic rings on the basis of mirror capture

We report about a facility for the receipt of high intensity electron rings which has been built at the Tomsk Institute for Nuclear Physics. The TONUS accelerator has been employed with 2 MeV energy and 50 kA current as an injector. Injection is provided by the reflection of the compensated beam from the metal cylindric surface. The beam is injected into the preionized plasma of needful pressure (10⁻⁴–10⁻⁵ mm Hg). The magnetic field which provides the compression of the beam is created by 4 pairs of coils. The analysis of the mostly dangerous instabilities of the compensated electron ring has been made.