Accelerating tube and medical linear accelerator with the accelerating tube
A linear accelerator and accelerating tube technology, applied in the medical field, can solve the problems of failure of the accelerating tube, short life of the accelerating tube, failure of the target body, etc., and achieve the effects of reducing maintenance costs, prolonging service life, and reducing the probability of occurrence
Active Publication Date: 2021-02-12
NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology
In a single vacuum chamber, the secondary electrons generated by the reflection of the anode target will damage the surface quality of the cathode emitter of the electron gun and the acceleration chamber
[0008] When the non-detachable anode target is used, the effective focus of the anode target surface is likely to cause target failure after long-term repeated and high-power bombardment. The failure of the target means the failure of the entire accelerating tube, and the life of the accelerating tube is short. high application cost
When the detachable anode target is used, due to the poor vacuum degree of the accelerating tube, the rebound phenomenon is serious, which will affect the life of the cathode
Method used
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[0030] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can accurately understand the technical solution of the present invention.
[0031] The axial direction, circumferential direction and radial direction described herein are all referred to in the acceleration tube, the extension direction of the rotation shaft 11 of the anode target 1 in the acceleration tube is the axial direction, and the extension direction of the diameter of the rotation shaft 11 is the radial direction. , the direction around the rotating shaft 11 is the circumferential direction.
[0032] Words such as first and second described herein are only used to distinguish two or more components with the same or similar structure, or two or more structures that are the same or similar, and do not represent a special limitation on the order.
[0033] The present invention provides a medical line...
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The invention provides an accelerating tube and a medical linear accelerator with the accelerating tube, which can avoid rebound and reduce the probability of target failure, thereby prolonging the service life of the accelerating tube and improving the efficiency of the medical linear accelerator. The present invention includes an electron gun and an anode target, and the acceleration tube also includes a first vacuum chamber and a second vacuum chamber communicated with each other, both of which are vacuum-isolated by an electron transmission medium, and the first vacuum chamber has a device for connecting the electron gun The first interface and the second interface for connecting the microwave generating device, so that its vacuum chamber forms an acceleration chamber; the second vacuum chamber is provided with a ray output window in the same transmission path as the electron transmission medium, and the The anode target is rotatably arranged in the second vacuum chamber, and has an annular target surface arranged coaxially with its rotation axis and at least partly located in the transmission path, and the rotation axis extends along the transmission path to drive the The annular target surface rotates perpendicular to the transport path.
Description
technical field [0001] The invention relates to the field of medical technology, in particular to an accelerating tube and a medical linear accelerator with the accelerating tube. Background technique [0002] With the increasing incidence of cancer, the utilization rate of medical linear accelerators has reached full capacity. As the core medical component of the medical linear accelerator, the accelerating tube plays a vital role. The bottleneck of its service life directly affects the efficiency of the medical linear accelerator. Regularly replacing the accelerating tube with a new one will bring great harm to hospitals and equipment suppliers. Come the double burden of efficiency and cost. [0003] The working principle of the accelerator tube is to accelerate the electrons emitted from the electron gun to high energy under the action of microwave electric field, emit them to the anode target surface, and finally output high-energy X-rays. The function of the target is...
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IPC IPC(8): H05H7/14H05H9/00
CPCH05H7/14H05H9/00
Inventor 田新智李燕赵国涛
Owner NEUSOFT MEDICAL SYST CO LTD