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Plug-in shell structure used for neutron collimator

A shell structure and collimator technology, applied in the direction of using the diaphragm/collimator, etc., can solve the problems of narrow neutron beam energy range, short collimation distance, large beam divergence, etc., and achieve beamline accuracy and The effect of obvious processing and manufacturing, easy machining, and high alignment accuracy

Inactive Publication Date: 2016-08-10
DONGGUAN NEUTRON SCI CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Generally, the straight-through neutron collimator, affected by its own structure, its inner wall will reflect neutrons to reduce the collimation performance, and the collimation distance is short, the beam divergence is large, and most of them are collimated in a non-vacuum state, and the performance is relatively good. In addition, the collimated neutron beam energy range is relatively narrow

Method used

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  • Plug-in shell structure used for neutron collimator
  • Plug-in shell structure used for neutron collimator
  • Plug-in shell structure used for neutron collimator

Examples

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Embodiment Construction

[0035] attached figure 1 A schematic diagram of a high-performance collimator. Take this as an example to further illustrate the specific implementation of the present invention.

[0036] First complete the assembly of the collimation plug-in 2: first remove the top cover and the large end fixing flange of the plug-in housing assembly, then install the blocking blocks and shielding blocks one by one from the upstream to the downstream of the beam line, and then install the fixing of the plug-in housing The flange and the top plate of the housing, and then install the screws (initial screwing) and positioning pins to accurately reset the relative position between the boards, and finally tighten all the screws.

[0037] Push the assembled collimation insert 2 into the inner cavity of the vacuum chamber assembly 1 from one end until the fixed flange at one end of the collimation insert is aligned with the embedded end face of the vacuum chamber, and then adjust the adjusting bo...

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Abstract

The invention discloses a plug-in shell structure for a neutron collimator. The connector housing of the present invention includes four veneers, each of the veneers has several concavo-convex structures on the sides along the beamline direction, and the veneers are butted through interlaced and matched concavo-convex structures; the four veneers The two ends are respectively connected with a limit unit. One of the two pairs of opposite veneers in the plug-in housing has a limiting protrusion on the side facing the inside of the plug-in housing, and the thickness of the protruding structure on the side of the other pair of veneers is smaller than that of the veneer on which it is located. thickness, so that a limiting protrusion for another pair of single boards is formed between the protruding structure and the single board. The plug-in housing of the present invention can also be composed of a U-shaped structure and a top plate, or two integrally processed L-shaped structures, both of which are butted by interlaced and matched concave-convex structures. Compared with the prior art, the invention can prevent the neutron jet effect, and it is relatively easy to ensure high manufacturing and assembly precision.

Description

technical field [0001] The invention relates to a plug-in shell structure for a neutron collimator, belonging to the field of structural design of neutron collimation and shielding. Background technique [0002] The neutrons emitted by the neutron source are collimated through the neutron collimator to constrain the vertical and transverse angle divergence of the neutrons along the expected direction to form a neutron beam; at the same time, as the innermost beamline component, the neutron The collimator needs to shield the stray neutrons from the outside of the collimator to prevent them from entering the neutron beam and affecting the quality of the beam. The collimator has the function of collimating the passing neutrons—controlling the divergence and shielding of the neutron beam—realizing the isolation between the inside and outside of the neutron beam. It is the core component of any neutron beam engineering and scientific research device. [0003] Generally, the stra...

Claims

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Application Information

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IPC IPC(8): G21K1/02
CPCG21K1/02
Inventor 付金煜陶举洲
Owner DONGGUAN NEUTRON SCI CENT
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