CN102612251B - Double-microwave-source electronic linear accelerator - Google Patents
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Abstract
本发明揭示了一种双微波源电子直线加速器,包括微波源和加速管,所述微波源包括第一微波源和第二微波源,所述微波源和加速管之间加设有一微波电桥,所述微波电桥包括两个输入端口和一个输出端口,所述第一微波源的输出端与所述微波电桥的一个输入端口连接,所述第二微波源的输出端与所述微波电桥的另一个输入端口连接,所述加速管的输入端与所述微波电桥的输出端口连接。本发明通过微波电桥使整个电子直线加速器同时具有两个微波源,输出功率可以达到仅有一个微波源时的近两倍;当其中一个微波源出现故障时,另一个微波源还可以正常工作,可以有效降低电子直线加速器故障停机时间。
The invention discloses a double microwave source electron linear accelerator, which includes a microwave source and an accelerating tube, the microwave source includes a first microwave source and a second microwave source, and a microwave bridge is added between the microwave source and the accelerating tube , the microwave bridge includes two input ports and an output port, the output end of the first microwave source is connected to an input port of the microwave bridge, the output end of the second microwave source is connected to the microwave The other input port of the electric bridge is connected, and the input end of the accelerating tube is connected with the output port of the microwave electric bridge. The present invention enables the entire electron linear accelerator to have two microwave sources at the same time through the microwave bridge, and the output power can reach nearly twice that of only one microwave source; when one of the microwave sources breaks down, the other microwave source can still work normally , which can effectively reduce the downtime of the electron linear accelerator.
Description
技术领域 technical field
本发明涉及电子直线加速器领域,尤其涉及一种具有双微波源的电子直线加速器。 The invention relates to the field of electron linear accelerators, in particular to an electron linear accelerator with double microwave sources.
背景技术 Background technique
在现有技术中,电子直线加速器只具有一个微波源,这在通常情况下没有问题,但是由于受限于微波源输出功率,无法实现更大的输出剂量率。 In the prior art, the electron linear accelerator has only one microwave source, which is usually no problem, but due to the limited output power of the microwave source, a higher output dose rate cannot be achieved.
发明内容 Contents of the invention
鉴于上述现有技术存在的缺陷,本发明的目的是提出一种具有双微波源的电子直线加速器,通过微波电桥使两个微波源交替工作,进而提高输出剂量率,达到仅使用一个微波源时的近似两倍。 In view of the above-mentioned defects in the prior art, the object of the present invention is to propose an electron linear accelerator with dual microwave sources, which can make the two microwave sources work alternately through a microwave bridge, thereby increasing the output dose rate and achieving the goal of using only one microwave source. approximately twice as long.
本发明的目的将通过以下技术方案得以实现: The purpose of the present invention will be achieved through the following technical solutions:
一种双微波源电子直线加速器,包括微波源和加速管,所述微波源的出口与加速管的入口相连接,所述微波源包括第一微波源和第二微波源,所述微波源和加速管之间加设有一微波电桥,所述微波电桥包括两个输入端口和一个输出端口,所述第一微波源的输出端与所述微波电桥的一个输入端口连接,所述第二微波源的输出端与所述微波电桥的另一个输入端口连接,所述加速管的输入端与所述微波电桥的输出端口连接。 A double microwave source electron linear accelerator, comprising a microwave source and an accelerating tube, the outlet of the microwave source is connected to the inlet of the accelerating tube, the microwave source includes a first microwave source and a second microwave source, the microwave source and A microwave bridge is added between the accelerating tubes, the microwave bridge includes two input ports and an output port, the output end of the first microwave source is connected to an input port of the microwave bridge, and the first The output ends of the two microwave sources are connected to the other input port of the microwave bridge, and the input ends of the accelerating tube are connected to the output port of the microwave bridge.
优选的,上述的一种双微波源电子直线加速器,其中:所述电子直线加速器的输出为X射线或者电子束。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the output of the electron linear accelerator is X-ray or electron beam.
优选的,上述的一种双微波源电子直线加速器,其中:所述电子直线加速器是行波加速器或者驻波加速器。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the electron linear accelerator is a traveling wave accelerator or a standing wave accelerator.
优选的,上述的一种双微波源电子直线加速器,其中:所述第一微波源和第二微波源均为磁控管或者均为速调管 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the first microwave source and the second microwave source are both magnetrons or klystrons
优选的,上述的一种双微波源电子直线加速器,其中:所述磁控管或者速调管的脉冲输出功率大于1MW。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the pulse output power of the magnetron or klystron is greater than 1MW.
优选的,上述的一种双微波源电子直线加速器,其中:所述第一微波源和所述微波电桥之间设有隔离器。隔离器用于吸收加速管反射回来的微波,防止微波反射到微波源,使之损坏。 Preferably, in the aforementioned double microwave source electron linear accelerator, an isolator is provided between the first microwave source and the microwave bridge. The isolator is used to absorb the microwave reflected by the accelerating tube, and prevent the microwave from being reflected to the microwave source and causing damage.
优选的,上述的一种双微波源电子直线加速器,其中:所述第二微波源和所述微波电桥之间设有隔离器。隔离器用于吸收加速管反射回来的微波,防止微波反射到微波源,使之损坏。 Preferably, in the aforementioned double microwave source electron linear accelerator, an isolator is provided between the second microwave source and the microwave bridge. The isolator is used to absorb the microwave reflected by the accelerating tube, and prevent the microwave from being reflected to the microwave source and causing damage.
优选的,上述的一种双微波源电子直线加速器,其中:所述微波电桥的两个输入端口之间的电长度为n+λ,每个输入端口与输出端口之间的电长度为n+λ/4,其中n为自然数,λ为微波波长。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the electrical length between the two input ports of the microwave bridge is n+λ, and the electrical length between each input port and the output port is n +λ/4, where n is a natural number and λ is the microwave wavelength.
优选的,上述的一种双微波源电子直线加速器,其中:所述微波电桥为窄带高隔离度微波电桥。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the microwave bridge is a narrow-band high-isolation microwave bridge.
优选的,上述的一种双微波源电子直线加速器,其中:所述微波电桥为波导形式。 Preferably, the above-mentioned double microwave source electron linear accelerator, wherein: the microwave bridge is in the form of a waveguide.
本发明的突出效果为:本发明通过微波电桥使整个电子直线加速器同时具有两个微波源,使电子直线加速器的输出功率可以达到仅有一个微波源时的近两倍,通过对两个微波源交替施加输入高压功率,可实现两个微波源交替工作。同时,由于具有两个微波源,一旦其中一个微波源出现故障时,另一个微波源还可以正常工作,可以有效降低电子直线加速器故障停机时间。 The outstanding effect of the present invention is: the present invention enables the entire electron linear accelerator to have two microwave sources at the same time through the microwave bridge, so that the output power of the electron linear accelerator can reach nearly twice that of when there is only one microwave source. The source alternately applies the input high-voltage power, which can realize the alternate work of the two microwave sources. At the same time, since there are two microwave sources, once one of the microwave sources fails, the other microwave source can still work normally, which can effectively reduce the downtime of the electron linear accelerator.
以下便结合实施例附图,对本发明的具体实施方式作进一步的详述,以使本发明技术方案更易于理解、掌握。 In the following, the specific implementation manners of the present invention will be further described in detail in conjunction with the accompanying drawings of the embodiments, so as to make the technical solution of the present invention easier to understand and grasp.
附图说明 Description of drawings
图1是现有技术的连接示意图; Fig. 1 is the connection diagram of prior art;
图2是本发明实施例的连接示意图; Fig. 2 is the connection schematic diagram of the embodiment of the present invention;
图3是本发明实施例的微波电桥的结构示意图。 Fig. 3 is a schematic structural diagram of a microwave bridge according to an embodiment of the present invention.
具体实施方式 Detailed ways
实施例: Example:
本实施例的一种双微波电子直线加速器,如图2~图3所示,包括微波源和加速管,微波源包括第一微波源和第二微波源,微波源和加速管之间加设有微波电桥1,微波电桥1包括两个输入端口3和4,以及一个输出端口2,第一微波源的输出端与微波电桥1的输入端口3连接,第二微波源的输出端与微波电桥1的另一个输入端口4连接,加速管的输入端与微波电桥1的输出端口2连接。微波电桥1的两个输入端口3和4之间的电长度为n+λ,输入端口3与输出端口2之间、输入端口4与输出端口2的电长度分别为n+λ/4,其中n为自然数,λ为微波波长。 A kind of double microwave electron linear accelerator of this embodiment, as shown in Fig. 2 ~ Fig. 3, comprises microwave source and accelerating tube, and microwave source comprises first microwave source and second microwave source, adds between microwave source and accelerating tube There is a microwave bridge 1, the microwave bridge 1 includes two input ports 3 and 4, and an output port 2, the output end of the first microwave source is connected to the input port 3 of the microwave bridge 1, and the output end of the second microwave source It is connected with another input port 4 of the microwave bridge 1 , and the input end of the accelerating tube is connected with the output port 2 of the microwave bridge 1 . The electrical length between the two input ports 3 and 4 of the microwave bridge 1 is n+λ, the electrical lengths between the input port 3 and the output port 2, and between the input port 4 and the output port 2 are respectively n+λ/4, Among them, n is a natural number, and λ is the microwave wavelength.
可选的,电子直线加速器的输出为X射线或者电子束。 Optionally, the output of the electron linear accelerator is X-rays or electron beams.
可选的,电子直线加速器是行波加速器或者驻波加速器。 Optionally, the electron linear accelerator is a traveling wave accelerator or a standing wave accelerator.
可选的,第一微波源和第二微波源均为磁控管或者均为速调管。磁控管或者速调管的脉冲输出功率大于1MW。 Optionally, the first microwave source and the second microwave source are both magnetrons or klystrons. The pulse output power of the magnetron or klystron is greater than 1MW.
可选的,第一微波源和微波电桥1之间设有隔离器。隔离器用于吸收加速管反射回来的微波,防止微波反射到微波源,使之损坏。 Optionally, an isolator is provided between the first microwave source and the microwave bridge 1 . The isolator is used to absorb the microwave reflected by the accelerating tube, and prevent the microwave from being reflected to the microwave source and causing damage.
可选的,第一微波源和微波电桥1之间设有隔离器。隔离器用于吸收加速管反射回来的微波,防止微波反射到微波源,使之损坏。 Optionally, an isolator is provided between the first microwave source and the microwave bridge 1 . The isolator is used to absorb the microwave reflected by the accelerating tube, and prevent the microwave from being reflected to the microwave source and causing damage.
可选的,微波电桥为窄带高隔离度微波电桥。 Optionally, the microwave bridge is a narrow-band high-isolation microwave bridge.
可选的,微波电桥为波导形式。 Optionally, the microwave bridge is in the form of a waveguide.
本实施例通过微波电桥1使整个电子直线加速器同时具有第一微波源和第二微波源,使电子直线加速器的输出功率可以达到仅有一个微波源时的近两倍,通过对第一微波源和第二微波源交替施加输入高压功率,可实现它们的交替工作。同时,由于具有第一微波源和第二微波源,一旦其中一个微波源出现故障时,另一个微波源还可以正常工作,可以有效降低电子直线加速器故障停机时间。 In this embodiment, the entire electron linear accelerator has the first microwave source and the second microwave source through the microwave bridge 1, so that the output power of the electron linear accelerator can reach nearly twice that when there is only one microwave source. The source and the second microwave source alternately apply input high-voltage power to realize their alternate work. At the same time, due to the first microwave source and the second microwave source, once one of the microwave sources fails, the other microwave source can still work normally, which can effectively reduce the downtime of the electron linear accelerator.
本发明尚有多种实施方式,凡采用等同变换或者等效变换而形成的所有技术方案,均落在本发明的保护范围之内。 There are still many implementations in the present invention, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the present invention.
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EP3600548A4 (en) * | 2017-03-24 | 2021-01-13 | Radiabeam Technologies, LLC | COMPACT LINEAR ACCELERATOR WITH ACCELERATION WAVE GUIDE |
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CN104470192B (en) * | 2013-09-22 | 2017-03-29 | 同方威视技术股份有限公司 | Electron linear accelerator system |
CN110324955B (en) * | 2019-01-31 | 2025-01-24 | 深圳铭杰医疗科技有限公司 | Electron accelerator |
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US4027193A (en) * | 1974-03-04 | 1977-05-31 | Atomic Energy Of Canada Limited | Klystron-resonant cavity accelerator system |
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