CN103152972A - Feedback type microwave system of medical linear accelerator - Google Patents
Feedback type microwave system of medical linear accelerator Download PDFInfo
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- CN103152972A CN103152972A CN2013100481416A CN201310048141A CN103152972A CN 103152972 A CN103152972 A CN 103152972A CN 2013100481416 A CN2013100481416 A CN 2013100481416A CN 201310048141 A CN201310048141 A CN 201310048141A CN 103152972 A CN103152972 A CN 103152972A
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Abstract
The invention belongs to the technical field of high-power microwave and specifically relates to a feedback type high-power microwave system. The feedback type microwave system of the medical linear accelerator is characterized by comprising an acceleration pipe, a microwave power synthesis bridge, a phase shifter, a phase shifter tuning motor and a water load, wherein two ports are arranged in a microwave inlet and a microwave outlet of the acceleration pipe, the port of the microwave inlet is connected to a port C of the microwave power synthesis bridge through wave guide, the port of the microwave outlet is connected to an input opening of the phase shifter through the wave guide, an output opening of the phase shifter is connected to a port B of the microwave power synthesis bridge through the wave guide, a port D of the microwave power synthesis bridge is connected with the water load, and a port A of the microwave power synthesis bridge is a microwave input opening; and the phase shifter is connected with the phase shifter tuning motor. According to the feedback type microwave system of the medical linear accelerator disclosed by the invention, when the injection power of a microwave source is constant, the microwave power and a power range of an injection accelerator can be greatly increased, and the cost and the energy consumption are saved.
Description
Technical field
The invention belongs to the microwave high power technology field, be specifically related to a kind of reaction type HIGH-POWERED MICROWAVES system.
Background technology
Electron linear accelerator is to utilize microwave energy to accelerate the equipment of electronics in certain electronics acceleration components (being generally capable ripple or resident wave accelerating pipe), for some accelerating tubes, in the situation that be no more than itself limit, the microwave power that injects accelerating tube is larger, the energy of its output electronics is higher, the range of microwave power of injecting accelerating tube is larger, and the energy range of its output electronics is wider.Therefore improving the microwave energy service efficiency, widen the power bracket of injecting microwave energy, is an important technology that promotes the electron accelerator performance index.
In common directly-fed microwave system, after microwave energy sends from microwave source, be directly injected into the entrance of accelerating tube through Wave guide system, electronics is accelerated rear direct outlet output from accelerating tube, utilize high power load directly to absorb, lost a large amount of microwave energies, so the peak power output of microwave source and power stage scope microwave power and the power bracket of accelerating tube have just directly been determined to inject.Under the directly-fed microwave system, improve the method for microwave injecting power and only have the more powerful microwave source of employing, still along with the increasing of microwave power source power output, the cost straight line rises.
Summary of the invention
The objective of the invention is: a kind of high-power reaction type microwave system device is provided, in the situation that the microwave source injecting power is certain, increases considerably microwave power and the power bracket of particle booster.
Technical scheme of the present invention is: a kind of clinac reaction type microwave system, and it comprises: accelerating tube, the synthetic bridge of microwave power, phase shifter, the tuning motor of phase shifter and water load;
The microwave entrance place of described accelerating tube and microwave exit are provided with two ports, the port at microwave entrance place is connected to a port C of the synthetic bridge of described microwave power by waveguide, the port in microwave exit is connected to the input port of described phase shifter by waveguide, the delivery outlet of described phase shifter is connected to a port B of the synthetic bridge of described microwave power by waveguide, the port D of the synthetic bridge of described microwave power connects water load, and the port A of the synthetic bridge of described microwave power is the microwave input port;
Described phase shifter is connected with the tuning motor of described phase shifter;
Microwave entrance place at described accelerating tube is provided with vacuum insulating window A to the waveguide at the synthetic bridge port C of described microwave power place, and described accelerating tube microwave exit extremely is respectively equipped with vacuum insulating window B in the waveguide of the input port of described phase shifter;
Be provided with directional coupler A at described vacuum insulating window A to the waveguide at the synthetic bridge port C of described microwave power place, be provided with directional coupler B at described vacuum insulating window B to the waveguide of the input port of described phase shifter, be provided with directional coupler C at the delivery outlet of described phase shifter to the waveguide of the port B of the synthetic bridge of described microwave power;
Inject through the port A of the synthetic bridge of described microwave power from the microwave of certain power of microwave source output, the unnecessary microwave energy of the microwave outlet output of described accelerating tube is inputted from the port B of the synthetic bridge of described microwave power after described phase shifter carries out the phase shift adjusting, through the synthetic bridge of described microwave power carry out microwave power synthetic after, inject the microwave entrance place of described accelerating tube by the port C of the synthetic bridge of described microwave power, in the synthetic bridge of described microwave power, unnecessary microwave energy is absorbed by described water load at port D.
Beneficial effect: (1) the invention provides a kind of high-power reaction type microwave system device, in the situation that the microwave source injecting power is certain, can increase considerably microwave power and the power bracket of particle booster, has saved cost and energy consumption; For example, when the power output of microwave source is 2 megawatts-4.2 megawatt hours, regulate phase shifter, the accelerating tube porch can obtain the highest approximately pulse power of 6 megawatts, the minimum approximately pulse power of 1 megawatt;
(2) vacuum insulating window of the present invention's employing, vacuum insulating window uses as the isolating device of vacuum section and injection section, and it is for almost not impact of microwave transmission, but both sides are obstructed physically; The inert gas of having avoided the microwave transmission part generally to take to rush certain pressure prevents the situation that microwave is struck sparks.
Description of drawings
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the microwave envelope schematic diagram that in the embodiment of the present invention, the synthetic bridge port C of power goes out;
Wherein, 1-accelerating tube, 2-water load, the synthetic bridge of 4-microwave power, 6-phase shifter, the tuning motor of 7-phase shifter.
Embodiment
Referring to accompanying drawing 1, a kind of clinac reaction type microwave system, it comprises: accelerating tube 1, the synthetic bridge 4 of microwave power, phase shifter 6, the tuning motor 7 of phase shifter and water load 2;
The microwave entrance place of accelerating tube 1 and microwave exit are provided with two ports, the port at microwave entrance place is connected to a port C of the synthetic bridge 4 of microwave power by waveguide, the port in microwave exit is connected to the input port of phase shifter 6 by waveguide, the delivery outlet of phase shifter 6 is connected to a port B of the synthetic bridge 4 of microwave power by waveguide, the port D of the synthetic bridge 4 of microwave power connects water load, and the port A of the synthetic bridge 4 of microwave power is the microwave input port;
Phase shifter 6 is connected with the tuning motor 7 of phase shifter;
Be provided with vacuum insulating window A in the waveguide at the synthetic bridge 4 port C places to microwave power, the microwave entrance place of accelerating tube 1, and accelerating tube 1 microwave exit is respectively equipped with vacuum insulating window B to the waveguide of the input port of phase shifter 6;
Be provided with directional coupler A in the waveguide at vacuum insulating window A synthetic bridge 4 port C places to microwave power, be provided with directional coupler B at vacuum insulating window B to the waveguide of the input port of phase shifter 6, be provided with directional coupler C at the delivery outlet of phase shifter 6 to the waveguide of the port B of the synthetic bridge 4 of microwave power;
Inject through the port A of the synthetic bridge 4 of microwave power from the microwave of certain power of microwave source output, the unnecessary microwave energy of the microwave outlet output of accelerating tube 1 is inputted from the port B of the synthetic bridge 4 of microwave power after phase shifter 6 carries out the phase shift adjusting, through the synthetic bridge 4 of microwave power carry out microwave power synthetic after, synthesize the microwave entrance place of the port C injection accelerating tube 1 of bridge 4 by microwave power, the synthetic interior unnecessary microwave energy of bridge 4 of microwave power is absorbed by water load 2 at port D.
In such scheme, waveguide is as the transmission channel of microwave energy, and it links together each microwave component, can suitably revise according to layout type; Can select E waveguide bend, two E waveguide bend and straight wave guide;
It is synthetic that the microwave energy that the synthetic bridge 4 of microwave power injects from two sections carries out power, then exports by output, generally adopts 3BD power to synthesize bridge;
Phase shifter 6 utilizes the tuning motor 7 of phase shifter to regulate the travel distance of microwave, thereby regulates the phase drift after microwave transmission;
Directional coupler is used for the microwave parameters of coupled waveguide, thereby provides data for parameters such as the power of controlling microwave system, frequencies;
During use, the vacuum degree in accelerating tube 1 generally reaches 10
-6Pa;
Referring to accompanying drawing 2, the unnecessary microwave energy that phase shifter 6 is exported the microwave outlet of accelerating tube 1 by the control of the tuning motor 7 of phase shifter carries out phase shift to be regulated, if the phase adjusted of unnecessary microwave is consistent as for the microwave phase that the port A place of the synthetic bridge 4 of microwave power injects, inject the microwave power of accelerating tube 1 for just superposeing.
The unnecessary microwave energy that phase shifter 6 is exported the microwave outlet of accelerating tube 1 by the control of the tuning motor 7 of phase shifter carries out phase shift to be regulated, if the phase adjusted of unnecessary microwave is opposite as for the microwave phase that the port A place of the synthetic bridge 4 of microwave power injects, the microwave power that injects accelerating tube 1 superposes for negative.
Claims (6)
1. a clinac reaction type microwave system, is characterized in that, it comprises: accelerating tube (1), the synthetic bridge (4) of microwave power, phase shifter (6), the tuning motor of phase shifter (7) and water load (2);
The microwave entrance place of described accelerating tube (1) and microwave exit are provided with two ports, the port at microwave entrance place is connected to a port C of the synthetic bridge (4) of described microwave power by waveguide, the port in microwave exit is connected to the input port of described phase shifter (6) by waveguide, the delivery outlet of described phase shifter (6) is connected to a port B of the synthetic bridge (4) of described microwave power by waveguide, the port D that described microwave power synthesizes bridge (4) connects water load, and the port A that described microwave power synthesizes bridge (4) is the microwave input port;
Described phase shifter (6) is connected with the tuning motor of described phase shifter (7);
Microwave entrance place at described accelerating tube (1) is provided with vacuum insulating window A to the waveguide at synthetic bridge (4) the port C of described microwave power place, and described accelerating tube (1) microwave exit extremely is respectively equipped with vacuum insulating window B in the waveguide of the input port of described phase shifter (6);
Be provided with directional coupler A at described vacuum insulating window A to the waveguide at synthetic bridge (4) the port C of described microwave power place, be provided with directional coupler B at described vacuum insulating window B to the waveguide of the input port of described phase shifter (6), be provided with directional coupler C at the delivery outlet of described phase shifter (6) to the waveguide of the port B of the synthetic bridge (4) of described microwave power;
inject through the port A of the synthetic bridge (4) of described microwave power from the microwave of certain power of microwave source output, the unnecessary microwave energy of the microwave outlet output of described accelerating tube (1) is inputted from the port B of the synthetic bridge (4) of described microwave power after described phase shifter (6) carries out the phase shift adjusting, through the synthetic bridge (4) of described microwave power carry out microwave power synthetic after, inject the microwave entrance place of described accelerating tube (1) by the port C of the synthetic bridge (4) of described microwave power, described microwave power synthesizes the interior unnecessary microwave energy of bridge (4) and is absorbed by described water load (2) at port D.
2. a kind of clinac reaction type microwave system as claimed in claim 1, it is characterized in that, the unnecessary microwave energy that described phase shifter (6) is exported the microwave outlet of described accelerating tube (1) by the control of the tuning motor of described phase shifter (7) carries out phase shift to be regulated, if the phase adjusted of unnecessary microwave is consistent as for the microwave phase that the port A place of the synthetic bridge (4) of described microwave power injects, inject the microwave power of described accelerating tube (1) for just superposeing.
3. a kind of clinac reaction type microwave system as claimed in claim 1, it is characterized in that, the unnecessary microwave energy that described phase shifter (6) is exported the microwave outlet of described accelerating tube (1) by the control of the tuning motor of described phase shifter (7) carries out phase shift to be regulated, if the phase adjusted of unnecessary microwave is opposite as for the microwave phase that the port A place of the synthetic bridge (4) of described microwave power injects, the microwave power that injects described accelerating tube (1) superposes for negative.
4. as claim 1,2 or 3 described a kind of clinac reaction type microwave systems, it is characterized in that, described microwave power synthesizes bridge (4) and adopts the synthetic bridge of 3dB power.
5. as a kind of clinac reaction type microwave system as described in claim 1,2 or 3, it is characterized in that, E waveguide bend, two E waveguide bend and straight wave guide are selected in described waveguide.
6. as a kind of clinac reaction type microwave system as described in claim 1,2 or 3, it is characterized in that, during use, the vacuum degree of described accelerating tube (1) reaches 10
-6More than Pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100481416A CN103152972A (en) | 2013-02-06 | 2013-02-06 | Feedback type microwave system of medical linear accelerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100481416A CN103152972A (en) | 2013-02-06 | 2013-02-06 | Feedback type microwave system of medical linear accelerator |
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| CN2013100481416A Pending CN103152972A (en) | 2013-02-06 | 2013-02-06 | Feedback type microwave system of medical linear accelerator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760415A (en) * | 2013-12-12 | 2014-04-30 | 中国原子能科学研究院 | Strong-flow compact type circular accelerator tuning loop phase detection method |
| CN104470192A (en) * | 2013-09-22 | 2015-03-25 | 同方威视技术股份有限公司 | Electron linear accelerator system |
| CN106841792A (en) * | 2017-01-24 | 2017-06-13 | 东南大学 | Online microwave phase detector device and detection method based on cantilever beam |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104470192A (en) * | 2013-09-22 | 2015-03-25 | 同方威视技术股份有限公司 | Electron linear accelerator system |
| CN104470192B (en) * | 2013-09-22 | 2017-03-29 | 同方威视技术股份有限公司 | Electron linear accelerator system |
| CN103760415A (en) * | 2013-12-12 | 2014-04-30 | 中国原子能科学研究院 | Strong-flow compact type circular accelerator tuning loop phase detection method |
| CN106841792A (en) * | 2017-01-24 | 2017-06-13 | 东南大学 | Online microwave phase detector device and detection method based on cantilever beam |
| CN106841792B (en) * | 2017-01-24 | 2019-03-05 | 东南大学 | Online microwave phase detector device and detection method based on cantilever beam |
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Application publication date: 20130612 |