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Rotating disc type neutron chopper

A turntable and chopper technology is applied in the field of turntable neutron choppers to achieve the effect of reducing scattering

Active Publication Date: 2015-02-25
DONGGUAN NEUTRON SCI CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no real neutron beam interception device that can be used for spallation neutron sources

Method used

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  • Rotating disc type neutron chopper
  • Rotating disc type neutron chopper
  • Rotating disc type neutron chopper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Attached below figure 1 to attach image 3 The present invention is described further:

[0016] Such as figure 1 and figure 2 A turntable neutron chopper shown includes a vacuum-sealed cavity 1 and a turntable 2, the turntable 2 is set in the vacuum-sealed cavity 1, and the drive between the turntable 2 and the servo motor 3 is connected by a key and a bushing 4 , The servo motor 3 is provided with a shaft sleeve 4, and the torque is transmitted through the key, while the turntable 2 and the shaft sleeve 4 are connected by 6 bolts, so that the servo motor 3 can drive the turntable 2 to rotate. In this embodiment, the vacuum-sealed cavity 1 is made of superhard aluminum alloy. The servo motor 3 is placed in the vacuum-sealed cavity 1 and the motor sleeve 5 , the space between the vacuum-sealed cavity 1 and the motor sleeve 5 is sealed by a rubber ring, and the vacuum is evacuated by the vacuum suction flange 6 .

[0017] Such as image 3 As shown, the turntable 2 ...

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Abstract

The invention relates to the technical field related to a spallation neutron source, in particular to a rotating disc type neutron chopper. The rotating disc type neutron chopper comprises a vacuum sealed cavity and a rotating disc. The rotating disc is arranged in the vacuum sealed cavity and is driven by a servo motor to rotate. The rotating disc is provided with a sector opening. Neutron beam windows are correspondingly arranged on the front side and the back side of the vacuum sealed cavity and are channels through which neutron beams pass the vacuum sealed cavity. The servo motor directly drives the rotating disc with the sector opening to cut the neutron beams to guarantee that the neutron beams conforming to the appointed wavelength range can pass the rotating disc type neutron chopper, and therefore the neutron beams with the appointed wave band can be accurately cut out. In addition, the rotating disc type neutron chopper is provided with the vacuum sealed cavity, the rotating disc type neutron chopper can run under the vacuum condition, and therefore scattering of the neutron beams in air when the neutron beams pass the rotating disc type neutron chopper can be reduced.

Description

technical field [0001] The invention relates to the related technical field of spallation neutron sources, in particular to a rotating disk neutron chopper. Background technique [0002] The spallation neutron source is driven by an accelerator to bombard a heavy metal target with high-energy protons, thereby obtaining a neutron beam with a high neutron flux. Advanced neutron sources are the basis of neutron scientific research and can provide necessary tools for the study of the microstructure and motion state of matter. Different research and experiments require different neutron beam bands, so neutron beams need to be intercepted according to different needs. At present, there is no neutron beam interception device that can be used for spallation neutron sources in the true sense. Contents of the invention [0003] The object of the present invention is to provide a rotary disk neutron chopper capable of continuously and stably operating in a vacuum and radiation envi...

Claims

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Application Information

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IPC IPC(8): G21G4/02
CPCG21G4/02
Inventor 王平杨博蔡伟亮
Owner DONGGUAN NEUTRON SCI CENT
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