Abstract: Method and apparatus in a race-track microtron for storing an energy-rich electron beam. Electrons are accelerated by repeatedly passing them through a linear accelerator that is arranged between two bending magnets, which change the electrons path so that they repeatedly pass through the linear accelerator. The electrons thereby move in orbits (3 . . . 8) with a race-track-like configuration and have successively larger orbits. A deflecting magnet (9') and a septum magnet (9") are arranged in conjunction with the greatest orbit (8). The characteristic features of the invention is that the microtron has a storage ring (10) closed in itself, for accelerated electrons. The storage ring is situated outside the septum magnet (9") and in the pole gap of each bending magnet (6, 7). A kicker magnet (16) is arranged in the storage ring (10).

Abstract: A neutron collimator with an adjustable irradiation field for an effective neutron radiation source includes a protective radiation casing; a frame surrounded by the casing; a plurality of individual carrier arms mounted on the frame; a plurality of pairs of opposite elongated wedge-shaped slabs arranged side by side such that respective ones of the opposite wedge-shaped slabs form a fan-shaped configuration which converges toward an apex at the neutron radiation source, each wedge-shaped slab being mounted for rotational and translational movement on a respective carrier arm such that the wedge-shaped slabs of each pair are mounted for motion towards and away from each other along a path which intersects the irradiation field for the neutron radiation source and such that the inner side surface of each wedge-shaped slab is always directed generally towards the neutron radiation source; and at least one bearing provided between each wedge-shaped slab and the respective carrier arm on which it is movably mount

Abstract: A method and a device for irradiating a confined volume of material, generally situated at a substantial depth below surface, with a beam of high energy charged or uncharged (neutral) particles have a characteristic feature that a beam of charged particles (e.g., electrons, protons, or deuterons) coming from a radiation source is scanned electrically in two orthogonal directions. To obtain a scanned beam of neutral particles, for example photons, a scanned beam of electrons is directed into a target which then emits the scanned beam of neutral particles to be incident into the confined volume. The emerging neutral particles will be emitted from the target predominantly in the direction as the incoming charged particles.