Rotation tritium target device cooled by gallium-indium liquid metal

Abstract

The invention provides a rotation tritium target device cooled by gallium-indium liquid metal. The rotation tritium target device comprises a vacuum rotation hollow shaft, a rotation tritium target piece, a cooling structure, a pneumatic turbine transmission mechanism, a vacuum pumping pipeline, an accelerator interface, a beam cooling spiral pipe and a gallium-indium liquid metal cooling circulation system. The rotation tritium target device has the advantages that the device can be used as the rotation tritium target system of a high-current deuterium and tritium fusion neutron generator, the gallium-indium liquid metal which is high in thermal conductivity coefficient and atomic number replaces currently commonly used cooling medium water to serve as cooling medium, the cooling effect of the target piece is increased greatly, influence of inverse scattering of cooling medium atoms on the energy and strength of neutrons emitted from the target piece can be lowered, and the monochromaticity of neutrons emitted from a neutron generator tritium target system is increased effectively.

Description

technical field [0001] The invention relates to a rotating tritium target device cooled by gallium indium liquid metal, which is mainly used for high-flux deuterium-tritium fusion neutron generator rotating tritium target system to generate high-flux deuterium-tritium fusion neutron beams, which can be used in neutron physics, Research fields such as medical physics, radiation protection and nuclear technology applications play an important role. Background technique [0002] The deuterium-tritium fusion neutron generator uses a strong deuterium ion beam to bombard a tritium target to generate a 14MeV high-energy fusion neutron. [0003] The bombardment of the high-current ion beam will deposit a large amount of heat on the tritium target of the neutron generator, and the instantaneous heat flux can reach up to about tens of kW / cm 2 , while the thickness of the tritium-absorbing titanium film on the tritium target is only a few μm. If the above-mentioned heat cannot be quic...

AI Technical Summary

Problems solved by technology

When working, the incident direction of the deuterium ion beam remains unchanged, and the tritium-titanium film ring belt on the rotating target is uniformly bombarded in turn, and at the same time, a high-speed circulating cooling water with a flow rate of 20-30 liters per minute is passed through the bottom of the target, so that the basic It is guaranteed that the target will not be overheated, resulting in the loss of tritium release, and the target will not be burned; but this cooling method will have a certain impact on the monochromaticity of the outgoing neutrons due to the introduction of the cooling water flow of the target substrate

In addition, the experience of actual use shows that due to the limitation of water heat transfer performance and the mechanical structure and strength of the rotating target, the further improvement of the incident deuterium ion beam intensity and the neutron intensity of the deuterium-tritium reaction is limited.

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