CN105636330A - Accelerating tube, control method thereof, accelerating tube controller and radiation treatment system - Google Patents
Accelerating tube, control method thereof, accelerating tube controller and radiation treatment system Download PDFInfo
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- CN105636330A CN105636330A CN201410608487.1A CN201410608487A CN105636330A CN 105636330 A CN105636330 A CN 105636330A CN 201410608487 A CN201410608487 A CN 201410608487A CN 105636330 A CN105636330 A CN 105636330A
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Abstract
The invention provides an accelerating tube, a control method thereof, an accelerating tube controller and a radiation treatment system. The accelerating tube comprises at least three acceleration chambers, every two adjacent acceleration chambers are coupled through a coupling chamber, and at least one coupling chamber is internally provided with a first switch part. The first switch part is suitable to open or close the coupling chamber, and a coupling channel suitable to penetrate through the adjacent acceleration chambers so as to be used for power direct coupling and transmission between the adjacent acceleration chambers is arranged between the adjacent acceleration chambers connected with the coupling chamber provided with the first switch part. The coupling channel is parallel to a beam channel of the accelerating tube, is different from the coupling chamber in position and is non-centrosymmetrical with regard to the communicated acceleration chambers. The coupling channel is provided with a second switch part, and the second switch part is suitable to open or close the coupling channel. By adopting the above scheme, the electron beams different in energy can be obtained, and the structure is simple.
Description
Technical field
The present invention relates to field of medical device, be specifically related to a kind of accelerating tube and control method, accelerating tube controller and radiotherapy system.
Background technology
Accelerating tube is the critical component of accelerator, and it accelerating to high energy from electron gun injected electrons under rf electric field effect, and finally practicing shooting produces sigmatron. Difference according to the mode accelerating electronics, accelerating tube is divided into travelling wave accelerating tube and resident wave accelerating pipe two kinds.
Image-guided radiotherapy (ImageGuideRadiationTherapy, IGRT) is a kind of radiation therapy technology, has a wide range of applications in field of radiation therapy. The accelerator of application IGRT technology and IGRT accelerator.
IGRT accelerator generally adopts resident wave accelerating pipe that electronics is accelerated. Operationally, the electron beam of KV level can both be produced, it is also possible to produce the electron beam of megavolt level. The electron beam of wherein said KV level is beaten on the imaging target of described IGRT accelerator, it is possible to produce the X ray for imaging. The electron beam of described megavolt of level may be used for focus in the patient is carried out radiotherapy. Wherein, the electron beam of described KV level and the electron beam of described megavolt of level both can be produced by the IGRT accelerator of the IGRT accelerator and homology with same radioactive source, it is also possible to produced by the IGRT accelerator with different radioactive source.
Therefore, described IGRT accelerator can be not only used for radiotherapy, can also before the treatment or in therapeutic process, focus in the patient or normal organ are monitored, guided radiation treatment is carried out, it is possible to reduce the radiocurable error caused by the reasons such as focus moves by the image produced.
At present, some homology IGRT accelerating tube, although certain image quality can be reached, but it is more complicated to realize method. In general, existing accelerating tube is difficult to be obtained the electron beam of different-energy by simple structure.
Summary of the invention
The problem that the embodiment of the present invention solves include following one of them: how to realize that a kind of structure is simpler and Energy distribution more extensively or the big accelerating tube of energy level distributed area.
For solving the problems referred to above, the embodiment of the present invention provides a kind of accelerating tube, described accelerating tube includes at least three accelerating cavity, it is of coupled connections by coupled cavity between each adjacent accelerating cavity, the first switch block it is provided with at least one coupled cavity, described first switch block is suitable to open or close described coupled cavity, and be provided with between the adjacent acceleration cavities that connects of the coupled cavity being provided with described first switch block and be suitable to through described adjacent acceleration cavities for power coupling channel of direct-coupling transmission between described adjacent acceleration cavities, described coupling channel is parallel to the beam channel of described accelerating tube, differ with the position of described coupled cavity and relative to the accelerating cavity non-centrosymmetry connected, described coupling channel is provided with second switch parts, described second switch parts are suitable to open or close described coupling channel.
Specifically, when described first switch block opens the coupled cavity arranged between each adjacent accelerating cavity, and described second switch parts are when closing the coupling channel arranged between each accelerating cavity, described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase, and when described second switch parts open a coupling channel, and described first switch block is when closing the coupled cavity arranged between through two accelerating cavities of described coupling channel, in the accelerating cavity that described coupling channel is through, produce the electric field of field intensity homophase.
Alternatively, described first switch block and second switch parts at least one be short bar.
Alternatively, described coupled cavity is side-coupled cavity.
Alternatively, the position of described coupling channel is configured to and arranges described accelerating tube and accelerate required energy and be associated.
Alternatively, described coupling channel is arranged on the position that said two accelerating cavity cavity wall is closest.
For solving the problems referred to above, the embodiment of the present invention additionally provides a kind of radiotherapy system, and described system includes accelerator and the controller coupled with described accelerator, wherein:
Described accelerator includes: electron gun and the accelerating tube being connected with described electron gun, and described accelerating tube is any one accelerating tube described in above-described embodiment;
Described controller is suitable to, according to the instruction controlling described accelerating tube mode of operation received, control the field intensity phase place of the accelerating cavity internal electric field of relevant position.
Alternatively, described controller is suitable to when receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase; And be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
For solving the problems referred to above, the embodiment of the present invention additionally provides a kind of accelerating tube controller, and described accelerating tube is any one accelerating tube described in the invention described above embodiment, and described accelerating tube controller includes:
Instruction reception unit, is suitable to receive the instruction controlling described accelerating tube mode of operation;
First control unit, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and described second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
Second control unit, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and described second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
For solving the problems referred to above, the embodiment of the present invention additionally provides a kind of accelerating tube control method, and described accelerating tube is any one accelerating tube described in the invention described above embodiment, and described control method includes:
Receive the instruction controlling described accelerating tube mode of operation;
When receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and described second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
When receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and described second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantage that
Between the different accelerating cavity in accelerating tube, choose coupled cavity or coupling channel as required, and control opening or closing of corresponding coupled cavity or coupling channel by switch block set in coupled cavity or coupling channel, control described coupled cavity or the field intensity phase place of electric field in adjacent acceleration cavities that coupling channel connects, and then the state of the acceleration or deceleration of the electron beam of process in control electric field, the electron beam of different-energy may finally be obtained as required, thus adopting an accelerating tube can meet the different demands of user. Further, compared to existing accelerating tube, above-mentioned accelerating tube structure is simpler, the use of convenient user.
Accompanying drawing explanation
Fig. 1 is cross-sectional view when being in the first mode of operation of the accelerating tube in the embodiment of the present invention;
Fig. 2 is cross-sectional view when being in the second mode of operation of the accelerating tube in the embodiment of the present invention;
Fig. 3 is the distribution map of the electric field that the accelerating tube in the embodiment of the present invention is in during the first mode of operation in each accelerating cavity;
Fig. 4 is the distribution map of the electric field that the accelerating tube in the embodiment of the present invention is in during the second mode of operation in each accelerating cavity;
Fig. 5 is the structural representation of the radiotherapy system in the embodiment of the present invention;
Fig. 6 is the accelerating tube controller architecture schematic diagram in the embodiment of the present invention;
Fig. 7 is the accelerating tube control method flow chart in the embodiment of the present invention.
Detailed description of the invention
As it was previously stated, existing accelerating tube is difficult to be obtained the electron beam of different-energy by simple structure. Such as, at present, in some homology accelerator, accelerating tube is divided into two parts, and a portion, for obtaining the electron beam of the best, arranges adjustable phase shifter and power attenuator in another part, for changing the energy of the electron beam of described the best, such that it is able to reach certain image quality, but due to the increase of adjustable phase shifter and power attenuator so that described homology IGRT accelerator realizes more complicated.
For the problems referred to above, embodiments providing a kind of accelerating tube, described accelerating tube as required, can be operated in different mode of operations. specifically, between the different accelerating cavity in accelerating tube, choose coupled cavity as required or for power coupling channel of direct-coupling transmission between described adjacent acceleration cavities, and control opening or closing of corresponding coupled cavity or coupling channel by switch block set in coupled cavity or coupling channel, control described coupled cavity or the field intensity phase place of electric field in adjacent acceleration cavities that coupling channel connects, and then the state of the acceleration or deceleration of the electron beam of process in control electric field, the electron beam of different-energy may finally be obtained as required, meet the corresponding demand of user. such as: described accelerating tube is used in IGRT accelerator, it is operated under lasting aero mode at described accelerating tube, through multistage acceleration, it is possible to obtain the electron beam of megavolt level, for radiotherapy, and after the work of described accelerating tube is formerly accelerated under deceleration mode time, then can obtain the electron beam of KV level, for before the treatment or in therapeutic process, focus in the patient or normal organ are monitored, carry out guided radiation treatment by the image produced, reduce the radiocurable error caused by the reasons such as focus moves. it is understood that as required, described accelerating tube can also have other mode of operation, for instance, realize first accelerating intermediate reduction gear finally acceleration etc. by arranging many group switches.
In being embodied as, described accelerating tube includes at least three accelerating cavity. Wherein, each adjacent accelerating cavity is of coupled connections by coupled cavity, and the accelerating cavity that any two is adjacent as one group of accelerating cavity, in embodiments of the present invention, can be additionally provided with coupling channel between least one set accelerating cavity.
For making described accelerating tube have different mode of operations, it is possible to arrange the first switch block at least one coupled cavity, and the coupling channel between the adjacent acceleration cavities that the described coupled cavity being provided with the first switch block connects is provided with second switch parts. In other words, described first switch block and second switch parts are separately positioned between two adjacent accelerating cavities, are arranged on the different of described two accelerating cavities and asymmetric position. So, by controlling the first switch block and second switch parts, opening or closing of coupled cavity and coupling channel can be determined respectively, control the electric field strength phase place in corresponding accelerating cavity, and then the energy of the electron beam of process can be changed, thus obtain the electron beam of required energy. Further, the accelerating tube in the embodiment of the present invention is when obtaining the electron beam of required energy, and structure is simpler, thus lower in cost, the use of convenient user.
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with accompanying drawing, specific embodiments of the invention are explained.
The accelerating tube in the reference embodiment of the present invention shown in Fig. 1-2 sectional structure chart under different working modes, and each accelerating cavity internal electric field scattergram of the corresponding different working modes shown in Fig. 3-4. Wherein, Fig. 3 is the distribution map of the electric field under the mode of operation shown in Fig. 1 of the accelerating tube in the embodiment of the present invention, and in Fig. 3 and Fig. 4, abscissa represents the physical length of each accelerating cavity on beam direction, and vertical coordinate represents the electric field intensity in each accelerating cavity. Wherein, the electric-field intensity distribution in each accelerating cavity is relevant to the position at accelerating cavity, and in each accelerating cavity, the electric field intensity value at entrance and exit place is 0. If in adjacent two accelerating cavities, the electric field intensity value in one of them accelerating cavity is be more than or equal to 0, and the electric field intensity value in another accelerating cavity is less than or equal to 0, then the direction of an electric field in described adjacent two accelerating cavities is anti-phase.
As Figure 1-4, The embodiment provides a kind of accelerating tube 10. In an IGRT accelerator, accelerating tube 10 can couple with the electron gun (not shown) producing electron beam. In being embodied as, described accelerating tube 10 can include at least three accelerating cavity, is connected by coupled cavity between the accelerating cavity that any two is adjacent. Beam channel 130 is formed by electromagnetic coupled between described accelerating cavity. Output after the beam channel 130 formed between the accelerated chamber of electron beam that electron gun produces. In being embodied as, it is possible to be arranged as required to the position of described coupled cavity. More preferably, as it can be seen, described coupled cavity can be side-coupled cavity.
As illustrated in fig. 1 and 2, described accelerating tube can include accelerating cavity 1101��1107 and the coupled cavity 1201��1206 being connected with two described accelerating cavities of arbitrary neighborhood, and coupled cavity 1201��1206 here is side-coupled cavity. Arrow a and b represents the electric field strength phase place in corresponding accelerating cavity at beam channel 130 place respectively, and in accelerating cavity, the Electric Field Distribution of other positions may refer to the Electric Field Distribution schematic diagram of each accelerating cavity in Fig. 3 and Fig. 4.
Wherein, being provided with the first switch block at least one coupled cavity, as illustrated in fig. 1 and 2, arrange the first switch block 1207 in coupled cavity 1203, described first switch block 1207 is suitable to open or close described coupled cavity 1203.
And in embodiments of the present invention, described in be provided with between the adjacent acceleration cavities that the coupled cavity of the first switch block connects and be additionally provided with coupling channel, described coupling channel differs with the position of described coupled cavity and relative to the accelerating cavity non-centrosymmetry connected. Being provided with second switch parts on described coupling channel, described second switch parts are suitable to open or close described coupling channel. As illustrated in fig. 1 and 2, it is provided with coupling channel 11 between described accelerating cavity 1103 and accelerating cavity 1104, described coupling channel 11 is provided with the second switch parts 140 that can open or close described coupling channel 11.
Operation principle below in conjunction with the accelerating tube in-4 pairs of embodiment of the present invention of Fig. 1 describes in detail:
It will be understood by those skilled in the art that and can change the energy entrained by electron beam by the electric field formed in accelerating cavity. Such as, in an embodiment of the present invention, IGRT accelerator includes power source (not shown). Described power source is to feed-in power in accelerating tube 10, and then forms electric field in accelerating cavity, and electric field distribution in accelerating cavity can change the energy entrained by electron beam.
Under normal circumstances, at synchronization, in accelerating tube, all cavitys all resonance is in a frequency, electric field phase in adjacent two accelerating cavities differs 180 ��, namely the electric field strength in adjacent acceleration cavities is anti-phase, electronics is t=D/v in the time that a chamber leaps, wherein, v is flight speed, t is equal to the half period of electromagnetic field vibration in accelerating tube, distance between adjacent acceleration cavities is D, and it is accelerated that the flight time of electronics and acceleration fields replacing direction time consistency make electronic beam current arrive during each cavity, it is achieved electron beam continues to accelerate along beam direction.
In an embodiment of the present invention, by controlling the first switch block and second switch parts, the coupled cavity arranged between each adjacent accelerating cavity can be made to open, the coupling channel arranged between each accelerating cavity is closed, so that the electric field strength in two accelerating cavities of arbitrary neighborhood is anti-phase in accelerating tube, as it is shown on figure 3, the electron beam that electron gun produces can be continued to accelerate by the Electric Field Distribution in accelerating cavity along beam direction. Such as, the time of electron transit accelerating tube unit accelerating gap is equal to the half period of microwave resonance, when electronics is in the acceleration fields phase place of accelerating cavity (such as 0, time ��) above, in accelerating cavity, adjacent electric field is in opposite direction, electronics is subject to the effect of lasting accelerating field, and final accelerating cavity can produce the electron beam of megavolt level.
In order to adopt described accelerating tube to obtain the electron beam that energy is relatively low, such as obtain the good KV level electron beam of image quality, the coupling channel being provided with second switch parts in accelerating tube can be opened, the coupled cavity being provided with the first switch block between two through for described coupling channel accelerating cavities is closed, make coupling channel that energy passes through to open to front transfer, owing to described coupling channel is directly through by accelerating cavity adjacent for said two, the two is made to generally form an accelerating cavity, electric field between two accelerating cavities that the script electric field of the coupled connection of coupling channel therefore opened is anti-phase becomes homophase, for convenience of description, the accelerating cavity that the two is adjacent is called one group of accelerating cavity, and the electric field strength phase place in the accelerating cavity adjacent with described one group of accelerating cavity of process after electron beam, and coupled compared with the state of connection between the accelerating cavity shown in Fig. 1 by coupled cavity, order reversion, and it is all anti-phase with the electric field in adjacent acceleration cavities. when electron beam is through described accelerating tube, owing to the electric field between initially passed adjacent accelerating cavity is all anti-phase, therefore can continue to accelerate under the effect of electric field, but through described in through two accelerating cavities of the coupling channel opened, due to the electric field homophase in the two accelerating cavity, therefore can reduce speed now, and under the effect of subsequent inverter electric field continued deceleration, it is hereby achieved that the electron beam that energy level is relatively low.
With reference to Fig. 2 and Fig. 4, control the first switch block 1207 and second switch parts 140, coupled cavity 1203 between accelerating cavity 1103 and accelerating cavity 1104 adjacent thereto is closed, therebetween coupling channel 11 is opened simultaneously, the electric field strength phase place in accelerating cavity 1104��1107 can be changed, therefore change the acceleration direction of the electron beam of process.
For the beam direction of electron beam for a direction. The electron beam that described electron gun produces passes through beam channel 130 along a direction. Described electron beam is when accelerating cavity 1101��1103, owing to the field intensity of adjacent two electric fields is anti-phase, described electron beam, equal to the half period of microwave resonance, therefore can be continued to accelerate by the time of electron transit accelerating tube unit accelerating gap so that the energy that described electron beam carries increases. And described electron beam is when described accelerating cavity 1104, field intensity homophase due to the phase place in accelerating cavity 1104 with the electric field in accelerating cavity 1103, thus result in passed electron beam to reduce speed now from accelerating cavity 1104, at synchronization, each accelerating cavity internal electric field field strength distribution is as shown in Figure 4, after autoacceleration chamber 1104, the field intensity of the electric field in adjacent two accelerating cavities is anti-phase, thus can so that continued deceleration after described electron beam autoacceleration chamber 1104.
It should be noted that, when the coupling channel being provided with second switch parts is opened, along particle acceleration direction, all can cause the field intensity homophase of electric field in the accelerating cavity that in communication next is adjacent, and cause the electric field strength in follow-up adjacent each accelerating cavity anti-phase therewith.
In an embodiment of the present invention, the energy of the electron beam that electron gun produces is 15keV, speed is the 24% of the light velocity, after accelerating cavity 1101 to accelerating cavity 1103, the speed of electron beam increases to more than the 98% of the light velocity, and now corresponding energy is more than 2MeV, and after accelerating cavity 1104 to accelerating cavity 1107, the speed of electron beam is reduced to the 86% of the light velocity, and now corresponding energy is about 500keV, and energy to be the electron beam within the scope of 500keV can obtain good image quality.
In an alternative embodiment of the invention, when electron beam injects accelerating cavity from electron gun, kinetic energy is about 10��40keV, and it is the light velocity that the speed of electronics is about v=0.17��0.37c, c; After accelerating cavity 1101 to accelerating cavity 1103, electron beam can be accelerated to 1��2MeV, and velocity of electrons reaches v=0.94��0.98c; And after accelerating cavity 1104 to accelerating cavity 1107, the energy of electron beam is reduced to 200��500keV, velocity of electrons is decelerated to v=0.69��0.86c, and energy can obtain good image quality at the electron beam of keV magnitude.
It is understandable that, in being embodied as, except can be used for producing KV level electronic beam current for imaging, and megavolt level high energy beam current is for radiotherapy, the accelerator in above-described embodiment also can be used for producing to be applicable to the electronic beam current of the different Therapeutic mode of many grades of energy, for instance, a kind of electronic beam current produced is 14 megavolts of levels, suitable in middle energy Therapeutic mode, the another kind of electron beam of generation is 6 megavolts of levels or less energy, it is adaptable to mental retardation Therapeutic mode.
It should be noted that, in being embodied as, as required, the coupling channel of through described adjacent acceleration cavities can also be set between two accelerating cavities of other arbitrary neighborhoods, and setting is suitable to open and close the second switch parts of described coupling channel in set coupling channel, simultaneously any one or more between coupled cavity 1201��1206, or in all coupled cavitys, the first switch block is set, adopt the mode same with previous embodiment, by controlling the first switch block and second switch parts, produce the electron beam of required energy, repeat no more.
As shown in the above, accelerating tube in the embodiment of the present invention, actual physics parameter according to described accelerating tube and being actually needed, by adjusting the on off state of the first switch block in the coupled cavity between a certain group of accelerating cavity and the second switch parts in corresponding coupling channel, the field intensity phase place of the electric field produced in accelerating cavity can be controlled, and then the energy that electron beam produced by accelerator carries can be adjusted. For the IGRT accelerator in the embodiment of the present invention, according to the quantity of accelerating cavity in accelerating tube and the electric field intensity in each accelerating cavity, coupling channel position in whole accelerating tube is rationally set, namely can obtain the electron beam of required energy, it is achieved the various application such as image supervisory control or treatment.
It should be noted that, in being embodied as, the position of described coupling channel set between two adjacent acceleration cavities can required energy level size be configured as required, say, that the position of described coupling channel may be configured to and arrange described accelerating tube and accelerate required energy and be associated. For example, it is possible to be formed in parallel with the through hole of beam channel on the sidewall of two adjacent accelerating cavities, as coupling channel. In an embodiment of the present invention, coupling channel is arranged near the maximum field position of accelerating cavity, is namely arranged near the position that adjacent acceleration cavities cavity wall is closest. The pore size of through hole can also be configured according to the size of accelerating tube frequency and required energy. Such as, as required, the shape in described through-hole aperture cross section can be arranged to " the kidney type " of circle, ellipse or some depression of past side etc. In an embodiment of the present invention, the pore size of described coupling channel through hole can be 3��6mm. Length is between 20��60 degree. It is understood that coupling channel be located proximate to electron gun (line porch), the output energy of final line will be more low; Coupling channel be located away from electron gun (stream outlet place), the final beam energy of line can be more high. For the accelerating tube of a N number of accelerating cavity altogether, average energy gain is E, and the acquisition energy of accelerating tube exit line is then E (N-2N1), and wherein N1 is the number of the accelerating cavity after described coupling channel.
In being embodied as, described first switch block 1207 can also be able to be other structures for short bar, as long as described first switch block 1207 can connect or disconnect the coupled cavity at place.
In being embodied as, described second switch parts 140 can also be able to be other structures for short bar, as long as described second switch parts 140 can open or close coupling channel.
As it is shown in figure 5, embodiments of the invention additionally provide a kind of radiotherapy system, described system includes above-mentioned accelerator 510 and the controller 520 coupled with described accelerator 510. Described accelerator 510 may include that electron gun and the accelerating tube being connected with described electron gun. Wherein, described accelerating tube can adopt the accelerating tube in above-described embodiment.
In being embodied as, it is possible to implement described accelerator 510 with reference to the above-mentioned description to the accelerating tube shown in Fig. 1 to Fig. 2, repeat no more herein.
In being embodied as, described controller 520 both can control described accelerator 510 and produce the electron beam of KV level, can control again described accelerator 510 and produce the electron beam of megavolt level.
When described controller 520 controls the electron beam that described accelerator 510 produces megavolt level, can control to be of coupled connections by coupled cavity between the accelerating cavity of arbitrary neighborhood in described accelerating tube, so that the electric field strength in the accelerating cavity of arbitrary neighborhood is anti-phase, as shown in Figure 3, the electron beam that electron gun produces can be accelerated by described accelerating cavity, after described electron beam obtains corresponding energy, it is possible to for radiotherapy.
When described controller 520 controls the electron beam that described accelerator 510 produces KV level, described controller 520 can control the electric field of two adjacent accelerating cavities generation homophases of described accelerating tube. Owing in accelerating tube, the accelerating cavity except two accelerating cavities producing homophase electric field is all anti-phase with the direction of an electric field in adjacent accelerating cavity, therefore can according to the quantity of accelerating cavity in accelerating tube and the electric field intensity in each accelerating cavity, adjust two accelerating cavities producing homophase electric field position in whole accelerating tube, thus obtaining the energy good electron beam of lower image quality, namely the electron beam exported in such cases may be used for improving image quality.
In an embodiment of the present invention, the first switch block it is provided with at least one coupled cavity, it is provided with, between two adjacent acceleration cavities that the described coupled cavity being provided with the first switch block connects, the coupling channel being suitable to through the two accelerating cavity, and be suitable to open and close the second switch parts of described coupling channel, physical parameter according to described accelerator 510 and actual demand, opening or closing of the first switch block that described controller 520 can control in accelerator 510 in corresponding coupled cavity and the second switch parts in coupling channel, produce the electron beam of appropriate energy.
In being embodied as, described controller 520 is suitable to, according to the instruction controlling described accelerating tube mode of operation received, control the field intensity phase place of the accelerating cavity internal electric field of relevant position. Such as, in an embodiment of the present invention, described controller 520 is suitable to when receiving the instruction that the described accelerator 510 of instruction is operated in first mode, control described first switch block and second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase; And be suitable to when receiving the instruction that the described accelerator 510 of instruction is operated in the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
Such as, with reference to Fig. 1 and 3, described controller 520 can control the first switch block 1207 in the coupled cavity 1203 of accelerator 510, and the second switch parts 140 between coupling channel 11, coupled cavity 1203 is opened, coupling channel 11 is closed, so that the electric field strength produced in each adjacent accelerating cavity is anti-phase, so that the electron-beam sustainer flowing through beam channel 130 accelerates. Refer again to Fig. 2 and 4, described controller 520 can also control the first switch block 1207 in coupled cavity 1203 and the second switch parts 140 in coupling channel 11 simultaneously, coupled cavity 1203 is closed, coupling channel 11 is opened, so that the electric field strength homophase in accelerating cavity 1103 and 1104, so that the electron beam flowing through beam channel 130 first accelerates to slow down afterwards, namely accelerating through accelerating cavity 1101-1103, when through accelerating cavity 1104, and afterwards through accelerating cavity 1105-1107, acceleration direction is contrary, and electron-beam sustainer slows down. In Fig. 1 and 2, arrow a and b represents when accelerating cavity is in mode of operation two kinds different respectively, and at a time, each accelerating cavity internal electric field is in the electric field strength phase place of beam channel 130 position.
In being embodied as, described first switch block and second switch parts can be all short bar, can also being other structures, as long as described first switch block can open or close coupled cavity, described second switch parts can open or close coupling channel.
Radiotherapy system in the embodiment of the present invention, the electron beam producing the good KV level of image quality not only by control accelerator 510 carrys out guided radiation treatment, produced error during to reduce radiotherapy, focus in the patient is carried out radiotherapy by the electron beam that can also produce megavolt level by controlling accelerator 510, and described accelerator 510 structure is relatively simple, thus can be more user-friendly, and cost can be reduced.
For making those skilled in the art be more fully understood that and realizing the present invention, the embodiment of the present invention additionally provides a kind of accelerating tube controller, described accelerating tube includes at least three accelerating cavity, the concrete physical arrangement of described accelerating tube may refer to the description in Fig. 1 and 2 and above-mentioned accelerating tube embodiment, as shown in Figure 6, described accelerating tube controller may include that
Instruction reception unit 61, is suitable to receive the instruction controlling described accelerating tube mode of operation;
First control unit 62, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
Second control unit 63, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
The embodiment of the present invention additionally provides a kind of accelerating tube control method, and described accelerating tube includes at least three accelerating cavity, concrete structure and operation principle and may refer to above-described embodiment and Fig. 1-4, and with reference to Fig. 7, described control method can adopt following steps:
S71, receives the instruction controlling described accelerating tube mode of operation.
S72, according to the instruction controlling accelerating tube mode of operation received, it is determined that the mode of operation of described accelerating tube, when described instruction indicates accelerating tube to be operated in first mode, performs step S73; When described instruction indicates accelerating tube to be operated in the second pattern, perform step S74.
S73, control described first switch block and described second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
S74, control described first switch block and described second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that in the accelerating cavity that described coupling channel is through, produce the electric field of field intensity homophase.
In being embodied as, described first switch block and described second switch parts can be all short bar, it is also possible to for other structures, as long as coupled cavity and coupling channel can be opened and closed as switch.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment can be by the hardware that program carrys out instruction relevant and completes, this program can be stored in a computer-readable recording medium, and storage medium may include that ROM, RAM, disk or CD etc.
Although present disclosure is as above, but the present invention is not limited to this. Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (9)
1. an accelerating tube, it is characterized in that, described accelerating tube includes at least three accelerating cavity, it is of coupled connections by coupled cavity between each adjacent accelerating cavity, the first switch block it is provided with at least one coupled cavity, described first switch block is suitable to open or close described coupled cavity, and be provided with between the adjacent acceleration cavities that connects of the coupled cavity being provided with described first switch block and be suitable to through described adjacent acceleration cavities for power coupling channel of direct-coupling transmission between described adjacent acceleration cavities, described coupling channel is parallel to the beam channel of described accelerating tube, differ with the position of described coupled cavity and relative to the accelerating cavity non-centrosymmetry connected, described coupling channel is provided with second switch parts, described second switch parts are suitable to open or close described coupling channel.
2. accelerating tube as claimed in claim 1 described, it is characterised in that described first switch block and second switch parts at least one be short bar.
3. accelerating tube as claimed in claim 1, it is characterised in that described coupled cavity is side-coupled cavity.
4. accelerating tube as claimed in claim 3, it is characterised in that the position of described coupling channel is configured to and arranges described accelerating tube and accelerate required energy and be associated.
5. accelerating tube as claimed in claim 4, it is characterised in that described coupling channel is arranged on the position that said two accelerating cavity cavity wall is closest.
6. a radiotherapy system, it is characterised in that include accelerator and the controller coupled with described accelerator, wherein:
Described accelerator includes: electron gun and the accelerating tube being connected with described electron gun, and described accelerating tube is the accelerating tube described in any one of claim 1-5;
Described controller is suitable to, according to the instruction controlling described accelerating tube mode of operation received, control the field intensity phase place of the accelerating cavity internal electric field of relevant position.
7. radiotherapy system as claimed in claim 6, it is characterized in that, described controller is suitable to when receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase; And be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
8. an accelerating tube controller, it is characterised in that described accelerating tube is the accelerating tube described in any one of claim 1-5, described accelerating tube controller includes:
Instruction reception unit, is suitable to receive the instruction controlling described accelerating tube mode of operation;
First control unit, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and described second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
Second control unit, be suitable to when receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and described second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
9. an accelerating tube control method, it is characterised in that described accelerating tube is the accelerating tube described in any one of claim 1-5, and described control method includes:
Receive the instruction controlling described accelerating tube mode of operation;
When receiving the instruction that the described accelerating tube of instruction is operated in first mode, control described first switch block and described second switch parts, to open the coupled cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity so that described accelerating tube produces in the accelerating cavity of arbitrary neighborhood the electric field that field intensity is anti-phase;
When receiving the instruction that the described accelerating tube of instruction is operated in the second pattern, control described first switch block and described second switch parts, to open a coupling channel, and close the coupled cavity arranged between two accelerating cavities that described coupling channel is through so that produce the electric field of field intensity homophase in the accelerating cavity that described coupling channel is through.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851958A (en) * | 2017-02-14 | 2017-06-13 | 上海联影医疗科技有限公司 | Accelerating tube |
| CN107333382A (en) * | 2017-08-07 | 2017-11-07 | 沈阳东软医疗系统有限公司 | A kind of side coupled standing wave accelerator tube and standing wave accelerator |
| CN109462932A (en) * | 2018-12-28 | 2019-03-12 | 上海联影医疗科技有限公司 | A kind of resident wave accelerating pipe |
| CN112867221A (en) * | 2020-12-30 | 2021-05-28 | 中国原子能科学研究院 | Acceleration structure and linear accelerator with same |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081502A (en) * | 1980-07-28 | 1982-02-17 | Varian Associates | Variable field coupled cavity resonator circuit for a linear accelerator |
| JPS63274098A (en) * | 1987-05-01 | 1988-11-11 | Toshiba Corp | Standing wave linear accelerator |
| CN1237079A (en) * | 1999-06-25 | 1999-12-01 | 清华大学 | Energy switch for axis-coupled standing wave accelerator tube |
| US20050057198A1 (en) * | 2003-08-22 | 2005-03-17 | Hanna Samy M. | Electronic energy switch for particle accelerator |
| CN1649469A (en) * | 2004-02-01 | 2005-08-03 | 绵阳高新区双峰科技开发有限公司 | Phase (energy) switch-standing wave electronic linear accelerator |
| US20070035260A1 (en) * | 2005-08-09 | 2007-02-15 | Siemens Medical Solutions Usa, Inc. | Dual-plunger energy switch |
| CN102577633A (en) * | 2009-07-08 | 2012-07-11 | 艾可瑞公司 | Interleaving multi-energy X-ray energy operation of a standing wave linear accelerator using electronic switches |
| CN204145873U (en) * | 2014-11-03 | 2015-02-04 | 上海联影医疗科技有限公司 | Accelerating tube and radiotherapy system |
-
2014
- 2014-11-03 CN CN201410608487.1A patent/CN105636330B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2081502A (en) * | 1980-07-28 | 1982-02-17 | Varian Associates | Variable field coupled cavity resonator circuit for a linear accelerator |
| JPS63274098A (en) * | 1987-05-01 | 1988-11-11 | Toshiba Corp | Standing wave linear accelerator |
| CN1237079A (en) * | 1999-06-25 | 1999-12-01 | 清华大学 | Energy switch for axis-coupled standing wave accelerator tube |
| US20050057198A1 (en) * | 2003-08-22 | 2005-03-17 | Hanna Samy M. | Electronic energy switch for particle accelerator |
| CN1649469A (en) * | 2004-02-01 | 2005-08-03 | 绵阳高新区双峰科技开发有限公司 | Phase (energy) switch-standing wave electronic linear accelerator |
| EP1715730A1 (en) * | 2004-02-01 | 2006-10-25 | Mian Yang Gao Xin Qu Twin Peak Technology Develop. | A phase switch and a standing wave linear accelerator with the phase switch |
| US20070035260A1 (en) * | 2005-08-09 | 2007-02-15 | Siemens Medical Solutions Usa, Inc. | Dual-plunger energy switch |
| CN102577633A (en) * | 2009-07-08 | 2012-07-11 | 艾可瑞公司 | Interleaving multi-energy X-ray energy operation of a standing wave linear accelerator using electronic switches |
| CN204145873U (en) * | 2014-11-03 | 2015-02-04 | 上海联影医疗科技有限公司 | Accelerating tube and radiotherapy system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106851958A (en) * | 2017-02-14 | 2017-06-13 | 上海联影医疗科技有限公司 | Accelerating tube |
| CN106851958B (en) * | 2017-02-14 | 2019-02-12 | 上海联影医疗科技有限公司 | Accelerating tube |
| CN107333382A (en) * | 2017-08-07 | 2017-11-07 | 沈阳东软医疗系统有限公司 | A kind of side coupled standing wave accelerator tube and standing wave accelerator |
| CN109462932A (en) * | 2018-12-28 | 2019-03-12 | 上海联影医疗科技有限公司 | A kind of resident wave accelerating pipe |
| US11191148B2 (en) | 2018-12-28 | 2021-11-30 | Shanghai United Imaging Healthcare Co., Ltd. | Accelerating apparatus for a radiation device |
| CN112867221A (en) * | 2020-12-30 | 2021-05-28 | 中国原子能科学研究院 | Acceleration structure and linear accelerator with same |
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|---|---|
| CN105636330B (en) | 2018-08-03 |
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