Drive for a neutron chopper
AssigneesM.A.N. Maschinenfabrik Augsburg-Nurnberg Aktiengesellschaft, KFA Kernforschungsanlage GmbH
InventorsOttmar Kreissl, Arnold Seeger
Life of this patent
Estimating the term…
Abstract
In order to make possible precisely controlled and reliable operation of the rotors of a neutron chopper each rotor is to be driven by a hysteresis motor, whose rotor is in the form of a hollow cylinder. The attachment of each drive rotor to the one end of the rotor is by way of a non-magnetic disk or ring which is screwed to the lower end of the rotor or the top end thereof in accordance with the design. The drive rotor is only shrunk onto the disk or ring. The stator placed around the drive rotor is embedded within the neutron chopper housing in an electrically insulating cast material which is not affected by high vacuum and radiation.
Claims6
A neutron chopper comprising:
- a chopper rotor,
- bearings at each end of the chopper rotor supporting the rotor for rotation about an axis transverse to the neutron beam to be chopped, and
- a motor for driving the chopper rotor, the motor including:
- a hollow cylindrical steel rotor coaxially arranged with respect to the chopper rotor, the motor rotor surrounding the bearing at one end of the chopper rotor but the motor rotor being radially spaced from the bearing which it surrounds, so that the motor rotor is not directly supported by said bearing, and
- a ring of non-magnetic material fixed to, and coaxial with, said one end of the chopper rotor, the motor rotor being fixed to the ring, whereby the ring serves to interconnect the chopper and motor rotors.
Dependencies are inferred from the claim text.