A small high-energy x-ray device and method

Abstract

The invention relates to a small high-energy X-ray device, which includes an X-ray source magnet system, an X-ray tube and a power supply system; the X-ray source magnet system includes six iron core iron yokes, two magnetic pole heads, and two to four magnetic pole pads , Two expansion coils and two circular excitation coils, six core iron yokes are distributed radially in the shape of a hexagonal star, forming a cylindrical inner space; two circular excitation coils are placed between the two magnetic pole heads and the six iron core iron yokes The formed cylindrical inner space is coaxial with the magnetic pole head; two expansion coils are placed on the two magnetic pole head cones and coaxial with the magnetic pole head. On the one hand, the present invention can reduce the volume of the magnet, improve the circumferential uniformity of the magnetic field distribution, and achieve the purpose of reducing and reducing the volume of the equipment. On the other hand, the falling edge of the expansion coil current is used to inject electrons, and the rising edge of the expansion coil current is used Extract electrons to increase X-ray yield.

Description

technical field [0001] The invention relates to the field of X-ray sources, and more specifically, relates to an X-ray source generated by bombarding heavy metals with high-energy electrons. Background technique [0002] X-ray sources are widely used in many fields, including radiology, radiodiagnosis and other fields. [0003] At present, the X-ray sources used in the above applications are generally divided into two categories, one is an X-ray machine, and the other is an electron linear accelerator. The photon energy of the X-ray machine is generally tens of keV, so its penetrating ability is low. The photon energy of the electron linear accelerator can reach up to several MeV, but the structure of the electron linear accelerator is complicated, the volume is large, the construction and operation cost is high, and there are many vulnerable parts. The main components of the electron linear accelerator include electron gun, accelerating tube, modulator, magnetron, microwa...

AI Technical Summary

Problems solved by technology

The photon energy of the X-ray machine is generally tens of keV, so its penetration ability is low

The photon energy of the electron linear accelerator can reach up to several MeV, but the structure of the electron linear accelerator is complicated, the volume is large, the construction and operation cost is high, and there are many vulnerable parts

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