Two-photon medical moderate-energy stationary wave accelerating tube

An accelerator tube and two-photon technology, applied in the field of accelerator tubes, can solve the problems of accelerator tube length, poor ray energy divergence, beam spot size and difficult adjustment of target points, etc., achieving moderate length, small deformation, and outstanding substantive characteristics. Effect

Inactive Publication Date: 2012-10-03
SHINVA MEDICAL INSTR CO LTD
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Problems solved by technology

The core problem existing in the medium-energy accelerating tubes of the prior art is that the accelerating tube is too long, generally greater than 1.8m, and cannot simultaneously take into account the output dose rate and ray quality of the low-ener

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  • Two-photon medical moderate-energy stationary wave accelerating tube
  • Two-photon medical moderate-energy stationary wave accelerating tube
  • Two-photon medical moderate-energy stationary wave accelerating tube

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Embodiment Construction

[0022] In order to clearly illustrate the technical characteristics of this solution, the following will describe this solution through specific implementation modes and in conjunction with the accompanying drawings.

[0023] A two-photon medical medium-energy standing wave accelerating tube, such as figure 1 As shown, it includes a cavity chain body 2, an electron gun 1 sealed at both ends of the cavity chain body 2, and a deflection device 7 with a titanium window 6. The electron gun 1 is welded to the cavity chain body 2 by argon arc welding, and the titanium window 6 It is a double-layer titanium foil structure, and there is water between the double-layer titanium foils. On the one hand, the water filters out a part of the electrons that have a little lower energy and cannot be completely filtered out in the deflection device 7, so as to improve the energy spectrum of the radiation. On the other hand, it can also Effective cooling of the titanium window 6 is performed. Th...

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Abstract

The invention provides a two-photon medical moderate-energy stationary wave accelerating tube. The two-photon medical moderate-energy stationary wave accelerating tube comprises a cavity chain body, an electron gun sealing at the two ends of the cavity chain body and a deflection device with a titanium window. The side surface of the cavity chain body is fixedly connected with a rectangular waveguide; the rectangular waveguide is fixedly connected with a microwave input window and a sputter ion pump; the cavity chain body is a accelerating cavity chain formed by a accelerating cavity and a coupled cavity, wherein the beam aperture of the accelerating cavity is between 6 mm and 8 mm; and the length of the cavity chain body is between 1.2 m and 1.4 m. According to the invention, the above beam aperture and cavity chain body are combined to use, and the total length of the accelerating tube is less than 1.6 m, so that the accelerating tube has medium length and high shunt impedance. Therefore, the accelerating tube is compatible with output dosage rate and ray quality of a low-energy accelerating tube and a moderate-energy accelerating tube, after the electronic targeting is achieved, any second gear 6-14MeV X-ray radiation can be offered and the output dose rate is not less than 3Gy/min.m, and any third gear 5-14MeV E radiation can be offered and the dose rate is not less than 4Gy/min.m.

Description

technical field [0001] The invention relates to an accelerating tube, in particular to a two-photon medical medium energy standing wave accelerating tube. Background technique [0002] Radiation therapy plays an important role in the treatment of malignant tumors. Although new methods are emerging every year, the status of radiation therapy has not been reduced. About 70% of tumor patients need radiation therapy. The development of radiation therapy is closely related to the development of accelerator technology. Medical electron linear accelerator is currently the most widely used and the largest number of radiation therapy devices in hospital clinical radiation therapy. According to energy, medical electron linear accelerators can be divided into three types: low-energy machines (4-6MeV), medium-energy machines (8-15MeV) and high-energy machines (20-25MeV). [0003] 6MeV single-photon accelerators are widely used in hospitals because of their compact structure, light weig...

Claims

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Application Information

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IPC IPC(8): H05H9/04
Inventor 陶小魁任旗王爱涛张明蒋华周勇车永新
Owner SHINVA MEDICAL INSTR CO LTD
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