X-ray tube performance testing mechanism

Abstract

The invention discloses an X-ray tube performance test mechanism, which comprises a vacuum cavity, a cold cathode test assembly, a grid lifting assembly, a liquid cooling anode assembly and a focal spot test assembly, and a cabin door is arranged on the vacuum cavity, and a loading platform is arranged in the vacuum cavity. The X-ray tube performance testing mechanism has the characteristics that the cathode and the grid can be adjusted, and the anode can be replaced, can be used for verifying various simulation data before preparation of a cold cathode X-ray tube, and can be used for conveniently adjusting various parameters of the performance of the X-ray tube under the condition that the X-ray tube does not need to be prepared into a tube, and the performance of different batches of cold cathodes under different preparation processes such as a graphite arc method, a solid-phase pyrolysis method, chemical vapor deposition, polymer pyrolysis and silk-screen printing can also be tested. Due to the characteristics, the development time of the cold cathode X-ray tube can be greatly shortened, and the tube manufacturing verification cost is saved; and quality inspection is performed on the cold cathode, so that the working stability and the yield of the cold cathode X-ray tube are improved.

Description

technical field [0001] The invention belongs to the technical field of X-ray tube performance testing equipment, and in particular relates to an X-ray tube performance testing mechanism. Background technique [0002] In the electroluminescence technology, the cathode made of a cone array and new materials represented by diamond, diamond-like carbon, carbon nanotubes and carbon fibers, when a certain electric field is applied to the cathode substrate coating layer of field emission, it will Reduce the height and width of the surface barrier of the cathode coating material, because of the tunneling effect, some high-energy electrons near the Fermi level will cross the surface barrier of the cathode, overflow the surface and fly to the anode, forming a current. This process does not require additional energy to excite electrons, and has the characteristics of fast response, low energy loss, and high emission efficiency, and because nanomaterials are used as the electron source,...

AI Technical Summary

Problems solved by technology

For example: ①Whether the cathode surface coating material is graphene or carbon nanotubes, the growth process is easily affected by external factors, and the growth uniformity is difficult to guarantee, resulting in inconsistent current emission density of each cold cathode

② The cold cathode ray tube works for a long time, and the stability needs to be improved

[0004] Because the quantum state in which the field emission cathode emits electrons is difficult to accurately simulate through the existing technology, the simulation results can only be verified after the tube is manufactured each time, and then the size and structure are fine-tuned, which takes a long time and costs higher

Images