A switchable neutron tube interchange system

Abstract

The invention discloses an interchanging system for neutron conduit switching. The interchanging system is composed of a fixed mounting frame and a vacuum chamber housing. The fixed mounting frame consists of a fixed mounting frame body and fixed mounting legs. The vacuum chamber housing includes a lower bottom vacuum chamber plate, an upper top vacuum chamber plate, a left lateral vacuum chamberplate, a right lateral vacuum chamber plate, a front-end vacuum chamber flange, and a rear-end vacuum chamber flange; and a left moving bracket and a right moving bracket are installed in the vacuum chamber of the vacuum chamber housing. A guide rail is installed on the upper surface of the lower bottom vacuum chamber plate in a screw manner; and sliding blocks are installed at the left moving bracket and the right moving bracket in a screw manner by corresponding to the guide rail. A left neutron conduit is installed right above the left moving bracket inside the vacuum chamber by two left adjusting mounting racks; and a right neutron conduit is installed at the right moving bracket by two right adjusting mounting racks. The interchanging system having advantages of novel design and highautomation degree is able to realize interchanging of neutron conduits with different cross sections.

Description

technical field [0001] The invention relates to the technical field of spallation neutron sources, in particular to an exchange system for switchable neutron conduits. Background technique [0002] The spallation neutron source is used to generate high-energy neutrons, and the high-energy neutrons are delivered to the multiphysics spectrometer through the neutron conduit, and then a series of physical experiments are performed. Among them, there will be energy loss when neutrons are transferred in the neutron guide, and radiation should be prevented. The neutron guide should maximize the transfer of neutrons and reduce the energy loss during the transfer process. The neutrons are reflected, delivered, and finally the neutrons are delivered to the multiphysics spectrometer for testing. [0003] The neutron conduit is essential in the engineering of the whole multiphysics spectrometer; if the multiphysics spectrometer uses neutrons to carry out various experiments, it is nece...

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Problems solved by technology

[0004] It should be pointed out that the surrounding environment of the spectrometer is full of neutron radiation, which has a certain impact on the on-site debugging staff. Therefore, it is necessary to propose a neutron conduit that can be electrically controlled to switch between different cross-sectional areas, and requires The sub-conduit has a certain degree of collimation and coaxiality, so that the neutron conduit can reduce the loss of neutrons under the function of changing the flow rate

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