Neutron monochromator shielding device

A technology of shielding device and monochromator, used in nuclear engineering, protected cells, etc., can solve the problems of complicated mechanical structure, inconvenient control and maintenance, and difficult construction, and achieve simple and stable device movement, high-angle positioning and fast speed. The effect of starting braking and turning resistance is small
CN101599307AActive Publication Date: 2009-12-09CHINA INSTITUTE OF ATOMIC ENERGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA INSTITUTE OF ATOMIC ENERGY
Publication Date
2009-12-09

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Abstract

The invention belongs to the technical filed of neutron scattering and discloses a shielding device of a neutron monochromator. The device has a closed cylindrical drum-shaped structure; a middle rotating part consists of a rotating tray which is provided with a gear ring and N+1 rotating preventing electromagnets, a large wedge block arranged on the rotating tray, N small division wedge blocks and a lower rotating tray bearing; the large wedge block and the rotating tray are mutually fixed together; and the N small division wedge blocks are sequentially arranged on the gap position of the large wedge block. A fixed electromagnet is arranged above the small wedge block, and the rotating preventing electromagnets and the fixed electromagnet attract the small wedge blocks when being electrified. The technical proposal provided by the invention finishes the complicated movement by the matching of software and hardware, and the structure is simple and the processing is convenient.
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Description

technical field

[0001] The invention belongs to the technical field of neutron scattering, and in particular relates to a shielding device for a neutron monochromator. Background technique

[0002] Most experimental measurements of reactor neutron scattering must use neutrons of a specific energy or wavelength, ie, monochromatic neutrons, as probes. The monochromatization process of the white light neutron beam drawn out by the reactor is realized by the crystal monochromator placed outside the bio-shield of the reactor, that is, by changing the take-off angle 2θ between the incident beam and the exit beam of the monochromator M And get. In order to meet the shielding requirements and effectively reduce the experimental background, a shielding device must be installed around the monochromator, that is, the monochromator shielding device, which is one of the key components of the neutron scattering spectrometer.

[0003] The main body of the monochromator shielding device i...

Claims

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