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US 6,529,573 B2Granted
Proton recoil scintillator neutron rem meter
AssigneeThe Regents of the University of California
InventorsRichard H. Olsher, David T. Seagraves
Life of this patent
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Abstract
A neutron rem meter utilizing proton recoil and thermal neutron scintillators to provide neutron detection and dose measurement. In using both fast scintillators and a thermal neutron scintillator the meter provides a wide range of sensitivity, uniform directional response, and uniform dose response. The scintillators output light to a photomultiplier tube that produces an electrical signal to an external neutron counter.
Claims14
A neutron rem meter comprising:
- a lightguide defining a cylindrically shaped penetration;
- a plurality of first moderators each of said first moderators defining a central aperture and individually mounted to said lightguide;
- a second moderator defining a central aperture coaxial with said cylindrically shaped penetration in said lightguide;
- a plurality of fast neutron scintillators individually mounted in said central aperture of each of said plurality of first moderators;
- and
- a cadmium filter, a thermal neutron scintillator, a plastic spacer and a photomultiplier tube located inside said cylindrically shaped penetration in said lightguide;
- wherein sensitivity of said thermal neutron scintillator is scaled to produce an accurate dose response.
4 more elements
A neutron rem meter comprising:
- a cubical lightguide defining a cylindrically shaped penetration and having a top, bottom and four sides;
- four first moderators each of said four first moderators defining a central aperture and individually mounted to said four sides of said cubical lightguide;
- a second moderator defining a central aperture coaxial with said cylindrically shaped penetration in said lightguide mounted to said top of said cubical lightguide;
- a third moderator mounted to said bottom of said cubical lightguide;
- four fast neutron scintillators, individually mounted in said central aperture of each of said four first moderators;
- and
- a cadmium filter, a thermal neutron scintillator, a plastic spacer and a photomultiplier tube located inside said cylindrically shaped penetration in said lightguide;
- wherein sensitivity of said thermal neutron scintillator is scaled to produce an accurate dose response.
5 more elements
Dependencies are inferred from the claim text.