Neutron insertion piece system and collimation mounting method thereof

Abstract

The invention relates to the technical field of a neutron scattering spectrometer and particularly relates to a neutron insertion piece system and a collimation mounting method thereof. The system comprises a neutron insertion piece, an inner adjusting mechanism in a shielding cylinder, and an outer adjusting mechanism outside the shielding cylinder, wherein the neutron insertion piece is mounted in the shielding cylinder, the inner adjusting mechanism is mounted at a bottom portion of the neutron insertion piece, the outer adjusting mechanism is arranged on a transition steel plate, the transition steel plate is pre-embedded in a concrete base station, and the neutron insertion piece is conveyed in and out of the shielding cylinder through the outer adjusting mechanism. The neutron insertion piece system is advantaged in that the structure is relatively simple, strong machinability and adjustability are realized, the deviation relationship of an actual value and a theoretical value of a target set can be acquired, update and maintenance of the neutron insertion piece are facilitated, a collimation mounting apparatus is a laser tracker and a measurement arm, collimation and mounting of the neutron insertion piece can be rapidly and conveniently realized, and replacement of the neutron insertion piece can be realized in minutes.

Description

technical field [0001] The invention relates to the technical field of neutron scattering spectrometers, in particular to a neutron insert system and a collimating installation method thereof. Background technique [0002] Neutron spectrometer mainly uses neutrons as a detection method to study the microstructure and properties of various substances. At present, the spectrometers built in various countries in the world can be divided into two categories, one is called neutron spallation source spectrometer; the other is called neutron reactor spectrometer. The neutron beam in the target station or reactor is transmitted to the spectrometer hall through neutron optical components such as neutron conduit or collimator, and then transmitted to the sample. Both the reactor and the target station need radiation protection shielding; thus neutron conduits or collimators inevitably need to pass through the radiation protection shielding layer. A neutron conduit or collimator loca...

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application publication number is CN103106940 A patent, which relates to the field of neutron physics technology, and discloses a neutron collimation system of a high-voltage doubler, although the system is composed of a shield, a channel, a collimator in the channel and a detector The composition, more specifically, is to open a channel on the shielding body of the high-voltage doubler hall, the front of the shielding body is equipped with a front-stage collimator, and the channel has a built-in collimator, and the collimator built in the channel has an inner and outer two-layer structure. However, this technical solution does not specifically disclose the structure of the collimator, and it is difficult to ensure the collimation and shielding of the neutron beam in the neutron conduit

In addition, the Chinese patent application publication number is the patent of CN105319575 A, which discloses a neutron performance testing device for a neutron collimator, and more specifically discloses two sets of neutron collimator position adjustment devices; the neutron collimator The position adjustment device of the detector includes a rotary table, a height adjustment device, a horizontal slide rail, a vertical slide rail and a neutron collimator fixing seat, and the rotary table, the horizontal slide rail and the longitudinal slide rail are all controlled by servo motors, although the test The device can accurately and quickly measure the neutron divergence angle and neutron transmittance of the neutron collimator, and has excellent mobility, but it is difficult to use this device to accurately detect and adjust the elevation and horizontal position

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