CN204145873U - Accelerating tube and radiotherapy system - Google Patents
Accelerating tube and radiotherapy system Download PDFInfo
- Publication number
- CN204145873U CN204145873U CN201420648407.0U CN201420648407U CN204145873U CN 204145873 U CN204145873 U CN 204145873U CN 201420648407 U CN201420648407 U CN 201420648407U CN 204145873 U CN204145873 U CN 204145873U
- Authority
- CN
- China
- Prior art keywords
- accelerating
- cavity
- coupling
- accelerating tube
- channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Particle Accelerators (AREA)
Abstract
A kind of accelerating tube and radiotherapy system, described accelerating tube comprises at least three accelerating cavities, be of coupled connections by coupling cavity between each adjacent accelerating cavity, the first switch block is provided with at least one coupling cavity, described first switch block is suitable for opening or closing described coupling cavity, and be provided with between the adjacent acceleration cavities that connects of the coupling cavity being provided with the first switch block and be suitable for through described adjacent acceleration cavities for the power coupling channel that direct-coupling transmits between described adjacent acceleration cavities, described coupling channel is parallel to the beam channel of described accelerating tube, not identical with the position of described coupling cavity and relative to be communicated with accelerating cavity non-centrosymmetry, described coupling channel is provided with second switch parts, described second switch parts are suitable for opening or closing described coupling channel.Application such scheme, can obtain the electron beam of different-energy, and structure is simple.
Description
Technical field
The utility model relates to field of medical device, is specifically related to a kind of accelerating tube 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.According to the difference of the mode of acceleration electronics, accelerating tube is divided into travelling wave accelerating tube and resident wave accelerating pipe two kinds.
Image-guided radiotherapy (Image Guide Radiation Therapy, 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 adopts resident wave accelerating pipe to accelerate electronics usually.Operationally, both can produce the electron beam of KV level, also can 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, can produce the X ray for imaging.The electron beam of described megavolt level may be used for carrying out radiotherapy to the focus in patient body.Wherein, the electron beam of described KV level and the electron beam of described megavolt level both can be produced by the IGRT accelerator of the IGRT accelerator and homology with same radioactive source, also can be produced by the IGRT accelerator with different radioactive source.
Therefore, described IGRT accelerator not only may be used for radiotherapy, can also before the treatment or in therapeutic process, focus in patient body or normal organ are monitored, carry out guided radiation treatment by the image produced, the radiocurable error caused by the reasons such as focus moves can be reduced.
At present, some homology IGRT accelerating tube, although can reach certain image quality, implementation method is more complicated.In general, existing accelerating tube is difficult to the electron beam being obtained different-energy by simple structure.
Utility model content
The problem that the utility model embodiment solves comprise following one of them: how to realize the more simple and Energy distribution of a kind of structure more extensively or the large accelerating tube of energy level distributed area.
For solving the problem, the utility model embodiment provides a kind of accelerating tube, described accelerating tube comprises at least three accelerating cavities, be of coupled connections by coupling cavity between each adjacent accelerating cavity, the first switch block is provided with at least one coupling cavity, described first switch block is suitable for opening or closing described coupling cavity, and be provided with between the adjacent acceleration cavities that connects of the coupling cavity being provided with described first switch block and be suitable for through described adjacent acceleration cavities for the power coupling channel that direct-coupling transmits between described adjacent acceleration cavities, described coupling channel is parallel to the beam channel of described accelerating tube, not identical with the position of described coupling cavity and relative to be communicated with accelerating cavity non-centrosymmetry, described coupling channel is provided with second switch parts, described second switch parts are suitable for opening or closing described coupling channel.
Alternatively, at least one of them is short bar for described first switch block and second switch parts.
Alternatively, described coupling cavity is side coupling cavity.
Alternatively, the position of described coupling channel is configured to and arranges described accelerating tube and accelerate institute's energy requirement and be associated.
Alternatively, described coupling channel is arranged on the nearest position of described two accelerating cavity chamber walls.
For solving the problem, the utility model embodiment still provides a kind of radiotherapy system, the controller that described radiotherapy system comprises accelerator and couples with described accelerator, wherein:
Described accelerator comprises: electron gun and the accelerating tube be connected with described electron gun, the accelerating tube described in the above-mentioned utility model embodiment of described accelerating tube;
Described controller is suitable for the instruction according to the described accelerating tube mode of operation of control received, and controls the field intensity phase place of the accelerating cavity internal electric field of relevant position.
Alternatively, described controller is suitable for when receiving the described accelerating tube of instruction and being operated in the instruction of first mode, control described first switch block and second switch parts, to open the coupling cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity, make in the accelerating cavity of arbitrary neighborhood in described accelerating tube, to produce the anti-phase electric field of field intensity; And be suitable for when receiving the described accelerating tube of instruction and being operated in the instruction of the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupling cavity arranged between two through accelerating cavities of described coupling channel, produce the electric field of field intensity homophase in the accelerating cavity making described coupling channel through.
Compared with prior art, the technical scheme of the utility model embodiment has the following advantages:
Between the different accelerating cavity in accelerating tube, choose coupling cavity or coupling channel as required, and control opening or closing of corresponding coupling cavity or coupling channel by switch block set in coupling cavity or coupling channel, control the field intensity phase place of the electric field in the adjacent acceleration cavities that described coupling cavity or coupling channel be communicated with, and then the state of the acceleration or deceleration of the electron beam of process in control electric field, finally can obtain the electron beam of different-energy as required, thus adopt an accelerating tube can meet the different demands of user.Further, compared to existing accelerating tube, above-mentioned accelerating tube structure is more simple, the use of convenient user.
Accompanying drawing explanation
Fig. 1 is accelerating tube in the utility model embodiment cross-sectional view when being in the first mode of operation;
Fig. 2 is accelerating tube in the utility model embodiment cross-sectional view when being in the second mode of operation;
Fig. 3 is accelerating tube in the utility model embodiment distribution map of the electric field when being in the first mode of operation in each accelerating cavity;
Fig. 4 is accelerating tube in the utility model embodiment distribution map of the electric field when being in the second mode of operation in each accelerating cavity;
Fig. 5 is the structural representation of the radiotherapy system in the utility model embodiment;
Fig. 6 is the accelerating tube controller architecture schematic diagram in the utility model embodiment;
Fig. 7 is the control method flow chart of the accelerating tube in the utility model embodiment.
Embodiment
As previously mentioned, existing accelerating tube is difficult to the electron beam being obtained different-energy by simple structure.Such as, at present, in some homology accelerator, will speed up pipe and be divided into two parts, wherein a part is for obtaining best electron beam, arranges adjustable phase shifter and power attenuator in another part, for changing the energy of the electron beam of described the best, thus certain image quality can be reached, but due to the increase of adjustable phase shifter and power attenuator, described homology IGRT accelerator is realized more complicated.
For the problems referred to above, the utility model embodiment provides a kind of accelerating tube, and described accelerating tube as required, can be operated in different mode of operations.Specifically, between the different accelerating cavity in accelerating tube, choose coupling cavity or the coupling channel for power direct-coupling transmission between described adjacent acceleration cavities as required, and control opening or closing of corresponding coupling cavity or coupling channel by switch block set in coupling cavity or coupling channel, control the field intensity phase place of the electric field in the adjacent acceleration cavities that described coupling cavity or coupling channel be communicated with, and then the state of the acceleration or deceleration of the electron beam of process in control electric field, finally can obtain the electron beam of different-energy as required, meet the corresponding demand of user.Such as: be used for by described accelerating tube in IGRT accelerator, under described accelerating tube is operated in lasting aero mode, through multistage acceleration, the electron beam of megavolt level can be obtained, for radiotherapy; And after described accelerating tube work 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 patient body 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.Be understandable that, as required, described accelerating tube can also have other mode of operation, such as, realizes first accelerating intermediate reduction gear finally accelerate by arranging many group switches.
In concrete enforcement, described accelerating tube comprises at least three accelerating cavities.Wherein, each adjacent accelerating cavity is of coupled connections by coupling cavity, and any two adjacent accelerating cavities as one group of accelerating cavity, in the utility model embodiment, also can be provided with coupling channel between at least one group of accelerating cavity.
For making described accelerating tube have different mode of operations, the first switch block can be set at least one coupling cavity, and coupling channel between the adjacent acceleration cavities connected at the described coupling cavity being provided with the first switch block 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 difference of described two accelerating cavities and asymmetric position.Like this, by controlling the first switch block and second switch parts, opening or closing of coupling cavity and coupling channel can be determined respectively, control the electric field strength phase place in corresponding accelerating cavity, and then the energy of electron beam of process can be changed, thus obtain the electron beam of required energy.Further, the accelerating tube in the utility model embodiment is when obtaining the electron beam of required energy, and structure is more simple, and thus cost is lower, the use of convenient user.
For enabling above-mentioned purpose of the present utility model, feature and advantage more become apparent, and explain specific embodiment of the utility model below in conjunction with accompanying drawing.
With reference to the sectional structure chart of accelerating tube under different working modes in the utility model embodiment shown in Fig. 1-2, and each accelerating cavity internal electric field distribution map of the corresponding different working modes shown in Fig. 3-4.Wherein, Fig. 3 is the distribution map of the electric field of the accelerating tube in the utility model embodiment under the mode of operation shown in Fig. 1, and in Fig. 3 and Fig. 4, abscissa represents the physical length of each accelerating cavity on beam direction, and ordinate represents the electric field strength 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 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, embodiment of the present utility model 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 concrete enforcement, described accelerating tube 10 can comprise at least three accelerating cavities, is connected between any two adjacent accelerating cavities by coupling cavity.Beam channel 130 is formed by electromagnetic coupled between described accelerating cavity.Export after the beam channel 130 of the electron beam that electron gun produces through being formed between accelerating cavity.In concrete enforcement, the position of described coupling cavity can be set as required.More preferably, as shown in the figure, described coupling cavity can be side coupling cavity.
As illustrated in fig. 1 and 2, described accelerating tube can comprise accelerating cavity 1101 ~ 1107, and the coupling cavity 1201 ~ 1206 be connected with arbitrary neighborhood two described accelerating cavities, and coupling cavity 1201 ~ 1206 is here side coupling cavity.Arrow a and b represents the electric field strength phase place at beam channel 130 place in corresponding accelerating cavity respectively, and in accelerating cavity, the Electric Field Distribution of other positions can see the Electric Field Distribution schematic diagram of accelerating cavity each in Fig. 3 and Fig. 4.
Wherein, be provided with the first switch block at least one coupling cavity, as illustrated in fig. 1 and 2, arrange the first switch block 1207 in coupling cavity 1203, described first switch block 1207 is suitable for opening or closing described coupling cavity 1203.
And in the utility model embodiment, also be provided with coupling channel between the adjacent acceleration cavities that the described coupling cavity being provided with the first switch block is communicated with, described coupling channel is identical with the position of described coupling cavity and relative to be communicated with accelerating cavity non-centrosymmetry.Described coupling channel is provided with second switch parts, and described second switch parts are suitable for opening or closing described coupling channel.As illustrated in fig. 1 and 2, between described accelerating cavity 1103 and accelerating cavity 1104, be provided with coupling channel 11, described coupling channel 11 be 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 Fig. 1-4 pairs of the utility model embodiments describes in detail:
It will be understood by those skilled in the art that the energy that can be changed by the electric field formed in accelerating cavity entrained by electron beam.Such as, in the utility model one embodiment, IGRT accelerator comprises power source (not shown).Described power source to feed-in power in accelerating tube 10, and then forms electric field in accelerating cavity, and the distribution of electric field in accelerating cavity can change the energy entrained by electron beam.
Under normal circumstances, at synchronization, in accelerating tube all cavitys all resonance 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 flying speed, t equals the half period of electromagnetic field vibration in accelerating tube, distance between adjacent acceleration cavities is D, and the flight time of electronics and accelerating field are changed when direction time consistency makes electronic beam current arrive each cavity accelerated, realizes electron beam and continues to accelerate along beam direction.
In the utility model one embodiment, by controlling the first switch block and second switch parts, the coupling cavity arranged between each adjacent accelerating cavity can be made to open, the coupling channel arranged between each accelerating cavity is closed, thus make the electric field strength in two accelerating cavities of arbitrary neighborhood in accelerating tube anti-phase, as shown in Figure 3, the electron beam that the Electric Field Distribution in accelerating cavity can produce electron gun continues to accelerate along beam direction.Such as, the time of electron transit accelerating tube unit accelerating gap equals the half period of microwave resonance, when electronics is in the accelerating field phase place of accelerating cavity (as 0, time π) above, in accelerating cavity, adjacent electric field direction is contrary, the effect of the accelerating field that electronics is continued, final accelerating cavity can produce the electron beam of megavolt level.
The lower electron beam of energy is obtained in order to adopt described accelerating tube, such as obtain the good KV level electron beam of image quality, the coupling channel being provided with second switch parts can be will speed up in pipe open, the coupling cavity being provided with the first switch block between through for described coupling channel two accelerating cavities is closed, energy is made to pass through opened coupling channel to front transfer, because described coupling channel is by directly through for described two adjacent accelerating cavities, the two is made to form an accelerating cavity on the whole, therefore the electric field between two accelerating cavities that the script electric field that opened coupling channel is of coupled connections is anti-phase becomes homophase, for convenience of description, these two adjacent accelerating cavities are called one group of accelerating cavity, and after electron beam process the accelerating cavity adjacent with described one group of accelerating cavity in electric field strength phase place, and be coupled compared with the state that is communicated with by coupling cavity between the accelerating cavity shown in Fig. 1, order reversion, and it is all anti-phase with the electric field in adjacent acceleration cavities.When electron beam is through described accelerating tube, due to initial process adjacent accelerating cavity between electric field be all anti-phase, therefore can continue to accelerate under the effect of electric field, but two accelerating cavities that the coupling channel opened described in passing through is through, due to the electric field homophase in these two accelerating cavities, therefore can reduce speed now, and under the effect of subsequent inverter electric field continued deceleration, thus the lower electron beam of energy level can be obtained.
With reference to Fig. 2 and Fig. 4, control the first switch block 1207 and second switch parts 140, the coupling cavity 1203 that will speed up between chamber 1103 and accelerating cavity 1104 adjacent is with it 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 through accelerating cavity 1101 ~ 1103 time, because the field intensity of adjacent two electric fields is anti-phase, the time of electron transit accelerating tube unit accelerating gap equals the half period of microwave resonance, and therefore can carry out continuing to accelerate to described electron beam, the energy that described electron beam is carried increases.And described electron beam is when described accelerating cavity 1104, due to the field intensity homophase of the electric field in the phase place in accelerating cavity 1104 and accelerating cavity 1103, thus cause the electron beam of process reduce speed now from accelerating cavity 1104, at synchronization, each accelerating cavity internal electric field field strength distribution as shown in Figure 4, after autoacceleration chamber 1104, the field intensity of the electric field in adjacent two accelerating cavities is anti-phase, continued deceleration after thus can making 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 the electric field in next the adjacent accelerating cavity be communicated with it, and cause the electric field strength in follow-up adjacent each accelerating cavity anti-phase thereupon.
In the utility model one embodiment, the energy of the electron beam that electron gun produces is 15keV, speed is 24% of the light velocity, after accelerating cavity 1101 to accelerating cavity 1103, the speed of electron beam is increased to more than 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 86% of the light velocity, and now corresponding energy is about 500keV, and energy to be electron beam within the scope of 500keV can obtain good image quality.
In another embodiment of the utility model, when electron beam injects accelerating cavity from electron gun, kinetic energy is about 10 ~ 40keV, and the speed of electronics is about v=0.17 ~ 0.37c, and c is the light velocity; 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.
Be understandable that, in concrete enforcement, except can be used for producing KV level electronic beam current for imaging, and megavolt level high energy beam current is used for radiotherapy, the accelerator in above-described embodiment also can be used for producing the electronic beam current of the different Therapeutic mode being applicable to many grades of energy, such as, a kind of electronic beam current produced is 14 megavolt levels, be applicable to middle energy Therapeutic mode, the another kind of electron beam of generation is 6 megavolt levels or lower energy, is applicable to low energy Therapeutic mode.
It should be noted that, in concrete enforcement, as required, the coupling channel of through described adjacent acceleration cavities also can be set between two accelerating cavities of other arbitrary neighborhoods, and setting is suitable for the second switch parts opening and closing described coupling channel in set coupling channel, any one or more simultaneously between coupling cavity 1201 ~ 1206, or in all coupling 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 institute's energy requirement, repeat no more.
As shown in the above, accelerating tube in the utility model embodiment, according to actual physics parameter and the actual needs of described accelerating tube, by adjusting the on off state of the first switch block in the coupling 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 that accelerator produces carries can be adjusted.For the IGRT accelerator in the utility model embodiment, according to the electric field strength in the quantity of accelerating cavity in accelerating tube and each accelerating cavity, the position of coupling channel in whole accelerating tube is rationally set, namely can obtain the electron beam of institute's energy requirement, realize the various application such as image supervisory control or treatment.
It should be noted that, in concrete enforcement, the position of described coupling channel set between two adjacent acceleration cavities can required energy level size be arranged as required, and that is, the position of described coupling channel can be configured to and arrange described accelerating tube and accelerate institute's energy requirement and be associated.Such as, the through hole being parallel to beam channel can be formed on the sidewall of two adjacent accelerating cavities, as coupling channel.In the utility model one embodiment, coupling channel is arranged near the maximum field position of accelerating cavity, is namely arranged near the nearest position of adjacent acceleration cavities chamber wall.The pore size of through hole also can be arranged according to the size of accelerating tube frequency and institute's energy requirement.Such as, as required, the shape in described through-hole aperture cross section can be arranged to " kidney type " of circle, ellipse or some depression of past side etc.In the utility model one embodiment, the pore size of described coupling channel through hole can be 3 ~ 6mm.Length is between 20 ~ 60 degree.Be understandable that, the position of coupling channel is near electron gun (line porch), and the output energy of final line will be lower; The position of coupling channel is away from electron gun (stream outlet place), and the final beam energy of line can be higher.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 concrete enforcement, described first switch block 1207 can be short bar can be also other structures, as long as described first switch block 1207 can be communicated with or disconnect the coupling cavity at place.
In concrete enforcement, described second switch parts 140 can be short bar can be also other structures, as long as described second switch parts 140 can open or close coupling channel.
As shown in Figure 5, of the present utility modelly embodiment still provides a kind of radiotherapy system, the controller 520 that described system comprises above-mentioned accelerator 510 and couples with described accelerator 510.Described accelerator 510 can comprise: electron gun and the accelerating tube be connected with described electron gun.Wherein, described accelerating tube can adopt the accelerating tube in above-described embodiment.
In concrete enforcement, described accelerator 510 can be implemented with reference to the above-mentioned description to the accelerating tube shown in Fig. 1 to Fig. 2, repeat no more herein.
In concrete enforcement, described controller 520 both can control the electron beam that described accelerator 510 produces KV level, can control again the electron beam that described accelerator 510 produces megavolt level.
Described controller 520 controls described accelerator 510 when producing the electron beam of megavolt level, be of coupled connections by coupling cavity between the accelerating cavity that can control arbitrary neighborhood in described accelerating tube, thus make the electric field strength in the accelerating cavity of arbitrary neighborhood anti-phase, as shown in Figure 3, described accelerating cavity can be accelerated the electron beam that electron gun produces, described electron beam may be used for radiotherapy after obtaining corresponding energy.
When described controller 520 control described accelerator 510 produce the electron beam of KV level time, described controller 520 can control the electric field that the adjacent accelerating cavity of two of described accelerating tube produces homophase.Because the accelerating cavity in accelerating tube except producing two accelerating cavities of homophase electric field is all anti-phase with the direction of an electric field in adjacent accelerating cavity, therefore can according to the electric field strength in the quantity of accelerating cavity in accelerating tube and each accelerating cavity, adjustment produces the position of two accelerating cavities in whole accelerating tube of homophase electric field, thus obtaining the good electron beam of the lower image quality of energy, namely the electron beam exported in such cases may be used for improving image quality.
In the utility model one embodiment, the first switch block is provided with at least one coupling cavity, the coupling channel being suitable for these two accelerating cavities through is provided with between two adjacent acceleration cavities that the described coupling cavity being provided with the first switch block is communicated with, and be suitable for the second switch parts opening and closing described coupling channel, according to physical parameter and the actual demand of described accelerator 510, described controller 520 can control opening or closing of the first switch block in accelerator 510 in corresponding coupling cavity and the second switch parts in coupling channel, produce the electron beam of appropriate energy.
In concrete enforcement, described controller 520 is suitable for the instruction according to the described accelerating tube mode of operation of control received, and controls the field intensity phase place of the accelerating cavity internal electric field of relevant position.Such as, in the utility model one embodiment, described controller 520 is suitable for when receiving the described accelerator 510 of instruction and being operated in the instruction of first mode, control described first switch block and second switch parts, to open the coupling cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity, make in the accelerating cavity of arbitrary neighborhood in described accelerating tube, to produce the anti-phase electric field of field intensity; And be suitable for when receiving the described accelerator 510 of instruction and being operated in the instruction of the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupling cavity arranged between two through accelerating cavities of described coupling channel, produce the electric field of field intensity homophase in the accelerating cavity making described coupling channel through.
Such as, with reference to Fig. 1 and 3, described controller 520 can control the first switch block 1207 in the coupling cavity 1203 of accelerator 510, and the second switch parts 140 between coupling channel 11, coupling cavity 1203 is opened, coupling channel 11 is closed, and to make the electric field strength that produces in each adjacent accelerating cavity anti-phase, thus the electron-beam sustainer flowing through beam channel 130 is accelerated.Refer again to Fig. 2 and 4, described controller 520 can also control the first switch block 1207 in coupling cavity 1203 and the second switch parts 140 in coupling channel 11 simultaneously, coupling cavity 1203 is closed, coupling channel 11 is opened, to make the electric field strength homophase in accelerating cavity 1103 and 1104, thus make the electron beam flowing through beam channel 130 first accelerate rear deceleration, 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, when arrow a and b represents that accelerating cavity is in two kinds of different mode of operations respectively, at a time, each accelerating cavity internal electric field is in the electric field strength phase place of beam channel 130 position.
In concrete enforcement, described first switch block and second switch parts can be all short bar, also can be other structures, as long as described first switch block can open or close coupling cavity, described second switch parts can open or close coupling channel.
Radiotherapy system in the utility model embodiment, the electron beam that not only can produce the good KV level of image quality by controlling accelerator 510 carrys out guided radiation treatment, the error produced during to reduce radiotherapy, the electron beam that can also produce megavolt level by controlling accelerator 510 carries out radiotherapy to the focus in patient body, and described accelerator 510 structure is comparatively simple, thus can be more user-friendly, and can reduce costs.
Understand better for making those skilled in the art and realize the utility model, the utility model embodiment still provides a kind of accelerating tube controller, described accelerating tube comprises at least three accelerating cavities, the concrete physical structure of described accelerating tube can see the description in Fig. 1 and 2 and above-mentioned accelerating tube embodiment, as shown in Figure 6, described accelerating tube controller can comprise:
Instruction reception unit 61, is suitable for receiving the instruction controlling described accelerating tube mode of operation;
First control unit 62, be suitable for when receiving the described accelerating tube of instruction and being operated in the instruction of first mode, control described first switch block and second switch parts, to open the coupling cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity, make in the accelerating cavity of arbitrary neighborhood in described accelerating tube, to produce the anti-phase electric field of field intensity;
Second control unit 63, be suitable for when receiving the described accelerating tube of instruction and being operated in the instruction of the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupling cavity arranged between two through accelerating cavities of described coupling channel, produce the electric field of field intensity homophase in the accelerating cavity making described coupling channel through.
The utility model embodiment still provides a kind of accelerating tube control method, and described accelerating tube comprises at least three accelerating cavities, and concrete structure and operation principle can see 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 of the control accelerating tube mode of operation received, determines the mode of operation of described accelerating tube, when described instruction instruction accelerating tube is operated in first mode, performs step S73; When described instruction instruction accelerating tube is operated in the second pattern, perform step S74.
S73, control described first switch block and described second switch parts, to open the coupling cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity, make in the accelerating cavity of arbitrary neighborhood in described accelerating tube, to produce the anti-phase electric field of field intensity;
S74, control described first switch block and described second switch parts, to open a coupling channel, and close the coupling cavity arranged between two through accelerating cavities of described coupling channel, in the accelerating cavity making described coupling channel through, produce the electric field of field intensity homophase.
In concrete enforcement, described first switch block and described second switch parts can be all short bar, also can be other structures, as long as switch opens and can close coupling cavity and coupling channel.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Although the utility model discloses as above, the utility model is not defined in this.Any those skilled in the art, not departing from spirit and scope of the present utility model, all can make various changes or modifications, and therefore protection range of the present utility model should be as the criterion with claim limited range.
Claims (7)
1. an accelerating tube, it is characterized in that, described accelerating tube comprises at least three accelerating cavities, be of coupled connections by coupling cavity between each adjacent accelerating cavity, the first switch block is provided with at least one coupling cavity, described first switch block is suitable for opening or closing described coupling cavity, and be provided with between the adjacent acceleration cavities that connects of the coupling cavity being provided with described first switch block and be suitable for through described adjacent acceleration cavities for the power coupling channel that direct-coupling transmits between described adjacent acceleration cavities, described coupling channel is parallel to the beam channel of described accelerating tube, not identical with the position of described coupling cavity and relative to be communicated with accelerating cavity non-centrosymmetry, described coupling channel is provided with second switch parts, described second switch parts are suitable for opening or closing described coupling channel.
2. accelerating tube as claimed in claim 1, it is characterized in that, at least one of them is short bar for described first switch block and second switch parts.
3. accelerating tube as claimed in claim 1, it is characterized in that, described coupling cavity is side coupling cavity.
4. accelerating tube as claimed in claim 3, is characterized in that, the position of described coupling channel is configured to and arranges described accelerating tube and accelerate institute's energy requirement and be associated.
5. accelerating tube as claimed in claim 4, it is characterized in that, described coupling channel is arranged on the nearest position of described two accelerating cavity chamber walls.
6. a radiotherapy system, is characterized in that, the controller comprising accelerator and couple with described accelerator, wherein:
Described accelerator comprises: electron gun and the accelerating tube be 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 for the instruction according to the described accelerating tube mode of operation of control received, and controls 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 for when receiving the described accelerating tube of instruction and being operated in the instruction of first mode, control described first switch block and second switch parts, to open the coupling cavity arranged between each adjacent accelerating cavity, close the coupling channel arranged between each accelerating cavity, make in the accelerating cavity of arbitrary neighborhood in described accelerating tube, to produce the anti-phase electric field of field intensity; And be suitable for when receiving the described accelerating tube of instruction and being operated in the instruction of the second pattern, control described first switch block and second switch parts, to open a coupling channel, and close the coupling cavity arranged between two through accelerating cavities of described coupling channel, produce the electric field of field intensity homophase in the accelerating cavity making described coupling channel through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648407.0U CN204145873U (en) | 2014-11-03 | 2014-11-03 | Accelerating tube and radiotherapy system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648407.0U CN204145873U (en) | 2014-11-03 | 2014-11-03 | Accelerating tube and radiotherapy system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145873U true CN204145873U (en) | 2015-02-04 |
Family
ID=52422532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420648407.0U Active CN204145873U (en) | 2014-11-03 | 2014-11-03 | Accelerating tube and radiotherapy system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145873U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104837293A (en) * | 2015-04-10 | 2015-08-12 | 中广核中科海维科技发展有限公司 | Accelerating tube energy adjusting device capable of outputting keV-level and MeV-level ray in transformation manner |
| CN105555009A (en) * | 2016-01-19 | 2016-05-04 | 中国科学技术大学 | Energy switch for on-axis electrical coupling standing wave accelerating tube |
| CN105636330A (en) * | 2014-11-03 | 2016-06-01 | 上海联影医疗科技有限公司 | Accelerating tube, control method thereof, accelerating tube controller and radiation treatment system |
| 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 |
-
2014
- 2014-11-03 CN CN201420648407.0U patent/CN204145873U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105636330A (en) * | 2014-11-03 | 2016-06-01 | 上海联影医疗科技有限公司 | Accelerating tube, control method thereof, accelerating tube controller and radiation treatment system |
| CN105636330B (en) * | 2014-11-03 | 2018-08-03 | 上海联影医疗科技有限公司 | Accelerating tube and its control method accelerate tube controller and radiotherapy system |
| CN104837293A (en) * | 2015-04-10 | 2015-08-12 | 中广核中科海维科技发展有限公司 | Accelerating tube energy adjusting device capable of outputting keV-level and MeV-level ray in transformation manner |
| CN105555009A (en) * | 2016-01-19 | 2016-05-04 | 中国科学技术大学 | Energy switch for on-axis electrical coupling standing wave accelerating tube |
| CN105555009B (en) * | 2016-01-19 | 2018-08-03 | 中国科学技术大学 | A kind of axis powers on the energy switch of coupled standing wave accelerator tube |
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204145873U (en) | Accelerating tube and radiotherapy system | |
| CN106879158B (en) | Medical proton linear accelerator | |
| CN108781501A (en) | For providing the mixing standing wave/travelling-wave linear accelerator for accelerating charged particle or radiation beam | |
| US7112924B2 (en) | Electronic energy switch for particle accelerator | |
| EP2750486B1 (en) | Standing wave electron linear accelerators with continuously adjustable energy and method thereof | |
| US6856105B2 (en) | Multi-energy particle accelerator | |
| CN105027686B (en) | Method for manufacturing high frequency accelerator, high frequency accelerator, and circular accelerator system | |
| CN105636330A (en) | Accelerating tube, control method thereof, accelerating tube controller and radiation treatment system | |
| CN105555009B (en) | A kind of axis powers on the energy switch of coupled standing wave accelerator tube | |
| US9491842B2 (en) | Methods for controlling standing wave accelerator and systems thereof | |
| CN105517316A (en) | Accelerating tube, method for accelerating charged particles, and medical linear accelerator | |
| CN106455288A (en) | Adjustable-energy electron linear accelerator | |
| CN105611712B (en) | Accelerating tube and its control method accelerate tube controller and radiotherapy system | |
| CN107333382B (en) | A kind of side coupled standing wave accelerator tube and standing wave accelerator | |
| CN102647849A (en) | Electron linear accelerator having dual purposes and dual-purpose method of electron linear accelerator | |
| US7005809B2 (en) | Energy switch for particle accelerator | |
| Chi et al. | Progress on the construction of the 100 MeV/100 kW electron linac for the NSC KIPT neutron source | |
| CN111630940B (en) | Accelerator and accelerator system | |
| CN204681663U (en) | The standing wave linear accelerating tube that a kind of bunching section field intensity is adjustable | |
| CN104822220A (en) | Standing wave linear accelerating tube with adjustable field strength of beam focusing segment | |
| Hou et al. | Accelerating structure design and fabrication for KIPT and PAL XFEL | |
| CN100364369C (en) | Method for modulating radio frequency four polar field accelerator | |
| CN206237663U (en) | A kind of energy with adjustable power divider can adjust electron linear accelerator | |
| EP3225084A1 (en) | Radio frequency cavities | |
| CN109195301B (en) | Accelerating tube and linear accelerator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201807 Shanghai city Jiading District Industrial Zone Jiading Road No. 2258 Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |