CN210186258U

CN210186258U - Laser ion cancer treatment device

Info

Publication number: CN210186258U
Application number: CN201920275759.9U
Authority: CN
Inventors: Tiewei Qian; 钱铁威
Original assignee: Guangdong Taiwei Accelerator Co Ltd
Current assignee: Guangdong Taiwei Accelerator Co Ltd
Priority date: 2019-03-05
Filing date: 2019-03-05
Publication date: 2020-03-27
Anticipated expiration: 2029-03-05

Abstract

The utility model provides a laser ion cancer treatment device, which comprises a laser ion source, a linear accelerator, a taking-out device and an irradiation device which are connected in sequence, wherein the taking-out device takes out ion beams accelerated by the linear accelerator, the irradiation device irradiates the ion beams taken out by the taking-out device to an irradiation object, the laser ion source comprises a target chamber, an insulating support is fixedly arranged in the target chamber, a laser channel which is communicated with the target chamber is arranged on the insulating support, one end of the laser channel is provided with a solid target, the laser device also comprises a laser, laser of the laser device is injected from the other end of the laser channel, a gas distribution ring is arranged between the solid target and the other end of the laser channel, a gas supply device is arranged outside the target chamber, the gas supply device is communicated with the gas distribution ring, one end of the laser channel is connected with an insulating connecting pipe, the, the ion extraction pipe extends to the outer side of the target chamber, and the end part of the ion extraction pipe is connected with the ion linear accelerator.

Description

Laser ion cancer treatment device

Technical Field

The utility model relates to a laser ion cancer treatment device.

Background

Due to the rapid development of laser technology, it has become possible to generate high-energy ion beams by using ultra-intense laser pulses to interact with solid targets, which has made it possible to build a new generation of compact, relatively inexpensive compact laser ion accelerators. Thereby further promoting the application of laser ion therapy, diagnosis and the like in the medical aspect.

In cancer therapy, a yang line and a heavy particle line are used. The carbon ions of the heavy particle line are the mainstream. The carbon ions are generated by an ion source, accelerated by a plurality of accelerators, and irradiated to an affected part of a patient.

SUMMERY OF THE UTILITY MODEL

The utility model provides a laser ion cancer treatment device with carry out multistage acceleration to the ion beam to improve the effect of shining the treatment.

The technical scheme of the utility model is realized like this:

the utility model provides a laser ion cancer treatment device, includes laser ion source, linear accelerator, the equipment of taking out, irradiation apparatus that connect gradually, take out equipment take out by linear accelerator's accelerating ion beam, irradiation apparatus will by the ion beam that the equipment of taking out was taken out shines the irradiation object, laser ion source include the target chamber, the target chamber internal fixation be equipped with insulating support, be equipped with the laser passageway that link up the target chamber both sides on the insulating support, the one end of laser passageway is equipped with the solid target, still includes the laser instrument, the laser of laser instrument kicks into from the other end of laser passageway, is equipped with the gas distribution ring between the other end of solid target and laser passageway, the target chamber is equipped with gas supply unit outward, gas supply unit and gas distribution ring intercommunication, be equipped with the venthole on the gas distribution ring, the one end of laser passageway is connected with insulating connecting pipe, the end connection, the end of the high-pressure connecting pipe is connected with an ion leading-out pipe, the ion leading-out pipe extends to the outer side of the target chamber, and the end of the ion leading-out pipe is connected with the ion linear accelerator.

The utility model discloses still further set up to, the gas distribution ring be ring shape, be equipped with gas passage in the gas distribution ring, gas supply unit and gas passage intercommunication, venthole and gas passage intercommunication, the venthole sets up towards the solid target.

The utility model discloses still further set up to, high pressure connecting pipe constitute by the inner tube and the outer tube of coaxial setting, the radial interval of inner tube and outer tube sets up, the inner tube is made by insulating material, the outer tube is made by conducting material, connect through the insulating block between inner tube and the outer tube, be equipped with the high pressure on the outer tube and connect.

The utility model discloses still further set up to, the laser instrument set up in the outside of target chamber, the laser that the laser instrument jetted out parallel with the laser channel and with the laser opposite direction in the laser channel, the laser that the laser instrument jetted out is led laser channel through speculum one and speculum two, speculum one sets up and lies in the laser instrument outside the target chamber and jets out the direction of laser, speculum two set up in the target chamber.

The utility model discloses still further set up to, the side of target chamber on be connected with the vacuum pipe, the other end of vacuum pipe link to each other with the vacuum pump through matching the pipeline.

The utility model discloses still further set up to, gas supply unit in be helium or nitrogen gas or argon gas.

The utility model discloses still further set up to, be equipped with condensing lens between the other end of laser passageway and the gas distribution ring, be equipped with the space that supplies laser to pass in the middle of the condensing lens.

The utility model discloses still further set up to, fixed target pass through insulating seat and laser channel and be connected, the insulating seat is the annular, the fixed intermediate position that sets up at the insulating seat of solid target.

The utility model discloses still further set up to, linear accelerator and take out equipment between still be equipped with deflection electromagnet and convex rail electro-magnet, the one end and the linear accelerator of deflection electromagnet are connected, the other end and the one end of convex rail electro-magnet of deflection electromagnet are connected, the other end and the taking out equipment of convex rail electro-magnet are connected, the deflection electromagnet is used for carrying linear accelerator's ion beam to make this ion beam revolute and accelerate to the energy of regulation, convex rail electro-magnet is used for controlling the ion beam that revolutes and staggers its orbit of revoluting, still includes controlling means, control the excitation volume of convex rail electro-magnet, and based on laser ion source's pulse timing, control the excitation of convex rail electro-magnet is regularly.

The utility model has the advantages that:

(1) the utility model provides a pair of laser ion cancer treatment device, its ion beam that comes out from the laser ion source can accelerate to sufficient energy through electrostatic field, linear accelerator, deflection electro-magnet, the multistage back of accelerating of convex rail electro-magnet, and the current value is revoluted in the increase, can improve the utilization efficiency of ion beam moreover.

(2) The laser pulse output by the laser in the utility model is emitted to the gas distribution ring after passing through the reflector and the condenser lens, the gas supply device applies gas through the gas distribution ring, and the prepulse can partially ionize the gas but will disperse due to diffraction effect before the main pulse; the main pulse front will further ionize the gas producing near critical density or low density plasma and generate relativistic electrons by laser direct acceleration mechanism, while the main pulse, still of relativistic intensity, continues to interact with the solid target to continue generating hot electrons due to relativistic self-guiding. Therefore, a larger amount of electrons are distributed at the high-energy tail part of a thermal electron energy spectrum, a stronger electrostatic field is formed behind the solid target, ions can be accelerated with higher efficiency in the electrostatic field, the energy of the ion beam is increased, and the ion beam can obtain better acceleration effect.

(3) The utility model discloses set up the high-pressure connecting pipe near ion linear accelerator's entry, the high-pressure connecting pipe circular telegram produces strong high frequency electric field, and in this region, most electron through the high-pressure connecting pipe can not get into linear accelerator's passageway with higher speed, and ion and electron are separated effectively.

(4) The utility model discloses the laser that well laser instrument jetted out gets into laser channel after the reflection of 2 speculums, its structural design is reasonable for whole equipment can be designed small and exquisite portablely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the laser ion source of the present invention;

fig. 3 is a schematic structural view of the high-pressure connection pipe of the present invention;

fig. 4 is an enlarged view of a portion a in fig. 2 according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The present invention is described below with reference to fig. 1-4:

a laser ion cancer treatment device comprises a laser ion source, a linear accelerator 93, an extraction device 310 and an irradiation device 311 which are connected in sequence, wherein the extraction device 310 extracts an ion beam accelerated by the linear accelerator 93, and the irradiation device 311 irradiates the ion beam extracted by the extraction device 310 to an irradiation object for treatment.

A laser ion source that extracts an ion beam from plasma generated by irradiation with laser light; a linear accelerator that accelerates the ion beam extracted from the laser ion source; a deflection electromagnet for transporting the ion beam of the linear accelerator and accelerating the ion beam to a predetermined energy by revolving the ion beam; a convex rail electromagnet which staggers a rotation rail of the ion beam every time the ion beam rotates; a control device that controls the excitation amount of the convex rail electromagnet and controls the excitation timing of the convex rail electromagnet based on the pulse timing of the laser ion source; an extraction device that extracts the ion beam accelerated by the synchrotron; and an irradiation device that irradiates the ion beam extracted by the extraction device to an irradiation object.

The laser ion source comprises a target chamber 10, the target chamber 10 is designed in a vacuum sealing manner, an insulating support 20 is fixedly arranged in the target chamber 10, a laser channel 30 penetrating through two sides of the target chamber 10 is arranged on the insulating support 20, a solid target 40 is arranged at one end of the laser channel 30, the laser ion source also comprises a laser 50, laser of the laser 50 is injected from the other end of the laser channel 30, an air distribution ring 60 is arranged between the solid target 40 and the other end of the laser channel 30, an air supply device 70 is arranged outside the target chamber 10, the gas supply device 70 is communicated with the gas distribution ring 60, the gas distribution ring 60 is provided with a gas outlet 80, one end of the laser channel 30 is connected with an insulating connecting pipe 90, the end part of the insulating connecting pipe 90 is connected with a high-voltage connecting pipe 91, the end part of the high-voltage connecting pipe 91 is connected with an ion leading-out pipe 92, the ion leading-out pipe 92 extends to the outer side of the target chamber 10, and the end part of the ion leading-out pipe 92 is connected with an ion linear accelerator 93.

In the technical scheme, laser is irradiated on inert gas applied by a gas distribution ring, ionized gas generates near-critical density or low-density plasma, relativistic electrons are generated through a laser direct acceleration mechanism, and meanwhile, due to relativistic self-guiding, main pulses with relativistic intensity continuously interact with a solid target to continuously generate hot electrons. Therefore, a larger amount of electrons are distributed at the high-energy tail part of a thermal electron energy spectrum, a stronger electrostatic field is formed behind a solid target, the electrostatic field is formed at the position of the insulating connecting pipe, ions are pre-accelerated, the pre-accelerated ions can better enter the high-pressure connecting pipe and are screened out in the high-pressure connecting pipe, the ions enter the ion linear accelerator through the ion leading-out pipe, and due to the existence of pre-acceleration and the existence of the high-pressure connecting pipe, laser ions can obtain a better acceleration effect.

Wherein, the gas distribution ring 60 be the ring shape, be equipped with gas channel 94 in the gas distribution ring 60, gas supply unit 70 and gas channel 94 intercommunication, venthole 80 sets up towards solid target 40, venthole 80 is equipped with a plurality ofly to at gas distribution ring 60 evenly distributed that upwards week, venthole 80 sets up towards solid target 40 and more is favorable to gas to assemble in solid target position department.

The high-voltage connecting pipe 91 is composed of an inner pipe 911 and an outer pipe 912 which are coaxially arranged, the inner pipe 911 and the outer pipe 912 are arranged at intervals in the radial direction, the inner pipe 911 is made of an insulating material, the outer pipe 912 is made of a conducting material, the inner pipe 911 and the outer pipe 912 are connected through an insulating block 913, and a high-voltage connector 914 is arranged on the outer pipe 912.

The laser 50 is arranged outside the target chamber 10, the laser emitted by the laser 50 is parallel to the laser channel 30 and opposite to the laser direction in the laser channel 30, the laser emitted by the laser 50 is guided to the laser channel 30 through a first reflecting mirror 95 and a second reflecting mirror 96, the first reflecting mirror 95 is arranged outside the target chamber 10 and located in the laser emitting direction of the laser 50, and the second reflecting mirror 96 is arranged inside the target chamber 10.

Among the above-mentioned technical scheme, come the incident direction who changes laser through the speculum, the design of the laser instrument position of being convenient for the small and exquisite that the volume of whole equipment can be designed.

Wherein, the side of the target chamber 10 is connected with a vacuum pipeline 97, and the other end of the vacuum pipeline 97 is connected with a vacuum pump 99 through a matching pipeline 98.

The gas in the gas supply device 70 is helium, nitrogen or argon.

Wherein, a condensing lens 100 is arranged between the other end of the laser channel 30 and the gas distribution ring 60, a space for the laser to pass through is arranged in the middle of the condensing lens 100, the laser beam is reflected and converged by the condensing lens, the incident effect of the laser beam is improved, and the scattering is reduced.

The solid target 40 is connected with the laser channel 30 through an insulating base 101, the insulating base 101 is annular, and the solid target 40 is fixedly arranged in the middle of the insulating base 101.

A deflection electromagnet 312 and a convex rail electromagnet 313 are further arranged between the linear accelerator 93 and the extraction device 310, one end of the deflection electromagnet 312 is connected with the linear accelerator 93, the other end of the deflection electromagnet 312 is connected with one end of the convex rail electromagnet 313, the other end of the convex rail electromagnet 313 is connected with the extraction device 310, the deflection electromagnet 312 is used for conveying the ion beam of the linear accelerator 93 and enabling the ion beam to orbit and accelerate to a specified energy, the convex rail electromagnet 313 is used for controlling the orbit of the orbit-crossed ion beam to be staggered, and the laser ion source extraction device further comprises a control device which is used for controlling the excitation quantity of the convex rail electromagnet 313 and controlling the excitation timing of the convex rail electromagnet 313 based on the pulse timing of the laser ion source.

The convex rail electromagnet and the pulse timing of the laser ion source are synchronously excited, the excitation quantity is constant, and the excitation timing is staggered, so that the magnetic field borne by the ion beam is changed.

As described above, according to the present embodiment, the magnetic field applied to the ion beam can be changed by varying the excitation timing with the constant excitation amount of the land electromagnet, and thus, multi-turn incidence can be performed. This improves the value of the revolving current and improves the utilization efficiency.

The utility model has the advantages that:

The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser ion cancer treatment device, characterized in that: comprises a laser ion source, a linear accelerator (93), a taking-out device (310) and an irradiation device (311) which are sequentially connected, wherein the taking-out device (310) takes out an ion beam accelerated by the linear accelerator (93), the irradiation device (311) irradiates the ion beam taken out by the taking-out device (310) to an irradiation object, the laser ion source comprises a target chamber (10), an insulating support (20) is fixedly arranged in the target chamber (10), a laser channel (30) penetrating through two sides of the target chamber (10) is arranged on the insulating support (20), a solid target (40) is arranged at one end of the laser channel (30), a laser (50) is further included, laser of the laser (50) is injected from the other end of the laser channel (30), a gas distribution ring (60) is arranged between the solid target (40) and the other end of the laser channel (30), and a gas supply device (70) is arranged outside the target chamber (10), gas supply unit (70) and gas distribution ring (60) intercommunication, be equipped with venthole (80) on gas distribution ring (60), the one end of laser channel (30) is connected with insulating connecting pipe (90), the end connection of insulating connecting pipe (90) has high-pressure connecting pipe (91), the end connection of high-pressure connecting pipe (91) has ion eduction tube (92), ion eduction tube (92) extend to the outside of target chamber (10), the tip and the ion linear accelerator (93) of ion eduction tube (92) are connected.

2. The laser ion cancer therapy device according to claim 1, wherein: the gas distribution ring (60) is annular, a gas channel (94) is arranged in the gas distribution ring (60), the gas supply device (70) is communicated with the gas channel (94), the gas outlet hole (80) is communicated with the gas channel (94), and the gas outlet hole (80) is arranged towards the solid target (40).

3. The laser ion cancer therapy device according to claim 1, wherein: the high-voltage connecting pipe (91) is composed of an inner pipe (911) and an outer pipe (912) which are coaxially arranged, the inner pipe (911) and the outer pipe (912) are arranged at intervals in the radial direction, the inner pipe (911) is made of an insulating material, the outer pipe (912) is made of a conductive material, the inner pipe (911) and the outer pipe (912) are connected through an insulating block (913), and a high-voltage connector (914) is arranged on the outer pipe (912).

4. A laser ion cancer treatment apparatus as claimed in claim 2 or 3, wherein: laser instrument (50) set up in the outside of target chamber (10), the laser that laser instrument (50) jetted out is parallel with laser passageway (30) and opposite with the laser direction in laser passageway (30), the laser that laser instrument (50) jetted out is led laser passageway (30) through speculum one (95) and speculum two (96), speculum one (95) set up in target chamber (10) outside and lie in the direction that laser instrument (50) jetted out laser, speculum two (96) set up in target chamber (10).

5. The laser ion cancer therapy device according to claim 4, wherein: the side surface of the target chamber (10) is connected with a vacuum pipeline (97), and the other end of the vacuum pipeline (97) is connected with a vacuum pump (99) through a matching pipeline (98).

6. The laser ion cancer therapy device according to claim 4, wherein: the gas in the gas supply device (70) is helium, nitrogen or argon.

7. The laser ion cancer therapy device according to claim 4, wherein: a condensing lens (100) is arranged between the other end of the laser channel (30) and the gas distribution ring (60), and a space for laser to pass through is arranged in the middle of the condensing lens (100).

8. The laser ion cancer therapy device according to claim 4, wherein: the solid target (40) is connected with the laser channel (30) through an insulating seat (101), the insulating seat (101) is annular, and the solid target (40) is fixedly arranged in the middle of the insulating seat (101).

9. The laser ion cancer therapy device according to claim 4, wherein: the laser ion source device is characterized in that a deflection electromagnet (312) and a convex rail electromagnet (313) are further arranged between the linear accelerator (93) and the taking-out equipment (310), one end of the deflection electromagnet (312) is connected with the linear accelerator (93), the other end of the deflection electromagnet (312) is connected with one end of the convex rail electromagnet (313), the other end of the convex rail electromagnet (313) is connected with the taking-out equipment (310), the deflection electromagnet (312) is used for conveying an ion beam of the linear accelerator (93) and enabling the ion beam to orbit and accelerate to a specified energy, the convex rail electromagnet (313) is used for controlling the orbit of the orbiting ion beam to be staggered, the laser ion source device further comprises a control device for controlling the excitation quantity of the convex rail electromagnet (313) and controlling the excitation timing of the convex rail electromagnet (313) based on the pulse timing of the laser ion source.