X-ray tube performance testing equipment

Abstract

The invention discloses an X-ray tube performance testing device, which includes a vacuum cavity, a cold cathode test component, a grid lift component, a liquid-cooled anode component, a focal spot test component, a high vacuum degree temperature control component and an X-ray tube performance test system, the vacuum chamber is provided with a hatch and an object loading platform inside. The X-ray tube performance testing equipment has the characteristics of adjustable cathode and grid, and replaceable anode. It can be used to verify the simulation data of cold-cathode X-ray tubes before preparation, and it is very convenient to adjust without preparing tubes. Various parameters of ray tube performance can also be used to test the performance of different batches of cold cathodes under different preparation processes such as graphite arc method, solid phase pyrolysis method, chemical vapor deposition, pyrolysis polymer, and screen printing. These features can greatly shorten the development time of cold cathode X-ray tubes and save the cost of tube manufacturing verification; perform quality inspection on cold cathodes, and improve the working stability and yield of cold cathode X-ray tubes.

Description

technical field [0001] The invention belongs to the technical field of X-ray tube performance testing equipment, in particular to an X-ray tube performance testing equipment. Background technique [0002] In the electroluminescence technology, a sharp cone array and a cathode made of new materials represented by diamond, diamond-like carbon, carbon nanotubes and carbon fibers are used. When a certain electric field is applied to the coating layer of the cathode substrate of the field emission, the Reduce the height and width of the surface barrier of the cathode coating material. Due to the tunneling effect, a part of the high-energy electrons near the Fermi level will pass through the cathode surface barrier, 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. Because of the use of nanomaterials as the el...

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

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