CN109041400A - A kind of screening arrangement and particle accelerator - Google Patents
A kind of screening arrangement and particle accelerator Download PDFInfo
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- CN109041400A CN109041400A CN201811257174.0A CN201811257174A CN109041400A CN 109041400 A CN109041400 A CN 109041400A CN 201811257174 A CN201811257174 A CN 201811257174A CN 109041400 A CN109041400 A CN 109041400A
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- 239000002245 particle Substances 0.000 title claims abstract description 53
- 238000012216 screening Methods 0.000 title abstract 5
- 239000000463 material Substances 0.000 claims description 17
- 238000010276 construction Methods 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000013011 mating Effects 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000000342 Monte Carlo simulation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H7/00—Details of devices of the types covered by groups H05H9/00, H05H11/00, H05H13/00
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0007—Casings
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- Plasma & Fusion (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Radiation-Therapy Devices (AREA)
- Particle Accelerators (AREA)
Abstract
The embodiment of the invention discloses a kind of screening arrangement and particle accelerators.The screening arrangement is applied to particle accelerator, including at least two shield members, each shield member include shield member ontology and at least one splice ends, and each shield member is spliced to form the screening arrangement comprising central through hole by least two splice ends；Central through hole is used to accommodate the beam current tube of the particle accelerator；Wherein, at least two shield members include the first shield member and secondary shielding component, and the first splice ends of the first shield member are provided with card convex, and the second splice ends of secondary shielding component are provided with card slot, and card convex and card slot, which are engaged by clamping, to be used.It is installed on beam current tube using above-mentioned screening arrangement, so that when getting to generation wink hair photon radiation on beam current tube side wall by particle, generated radiation when particle accelerator uses can be shielded, the threat of the health to the operator or patient on particle accelerator periphery is reduced.
Description
Technical Field
The embodiment of the invention relates to the technical field of medical instruments, in particular to a shielding device and a particle accelerator.
Background
The particle beam in the particle accelerator is generated by an injector and finally transmitted to the synchrotron via a beam conduit to accelerate the particle beam to obtain energy. Due to specific requirements, the installation direction of the beam pipeline and the initial movement direction of the particle beam have a certain included angle, so that the particle beam needs to be interfered at one end of the beam pipeline principle synchrotron so as to change the direction of the particle beam. Because the backward dispersion degree of the particle beam flow is enhanced, part of particles can hit the side wall of the beam pipeline to generate prompt photon radiation, and further the health of operators or patients around the particle accelerator is threatened.
Disclosure of Invention
The invention provides a shielding device and a particle accelerator, which are used for reducing radiation generated when the particle accelerator is used.
In a first aspect, an embodiment of the present invention provides a shielding apparatus applied to a particle accelerator, including at least two shielding components, each shielding component including a shielding component body and at least one splicing end, where each shielding component is spliced by the at least two splicing ends to form a shielding apparatus including a central through hole; the central through hole is used for accommodating a beam pipeline of the particle accelerator; wherein,
at least two shielding part include first shielding part and second shielding part, first shielding part's first concatenation end is provided with the card protrudingly, second shielding part's second concatenation end is provided with the draw-in groove, the card protrudingly with the cooperation of draw-in groove joint is used.
In a second aspect, embodiments of the present invention further provide a particle accelerator, including the shielding apparatus as provided in the embodiments of the first aspect.
According to the particle accelerator, the first splicing end with the clamping protrusions and the second splicing end with the clamping grooves are matched in a clamping mode, the first shielding part with the first splicing end and the second shielding part with the second splicing end are spliced to form the shielding device with the central through hole, and the beam pipeline of the particle accelerator penetrates through the central through hole, so that when particles impact the side wall of the beam pipeline to generate prompt photon radiation, the radiation generated when the particle accelerator is used can be shielded, and the threat to the health of operators or patients around the particle accelerator is reduced.
Drawings
Fig. 1 is a schematic structural diagram of shielding members of a shielding apparatus according to a first embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a shielding apparatus according to a first embodiment of the present invention;
FIG. 3A is an orientation view of a first shield member in accordance with a first embodiment of the present invention;
FIG. 3B is an orientation view of a second shield member in accordance with a first embodiment of the present invention;
FIG. 4 is a view showing one direction of a shielding member in the second embodiment of the present invention;
fig. 5 is a schematic perspective view of a first shielding member according to a third embodiment of the present invention;
fig. 6 is a schematic perspective view of a second shielding member according to a third embodiment of the present invention;
FIG. 7 is a spectrum diagram of an instantaneous photon generated by a proton impinging on an iron material in the third embodiment of the present invention;
FIG. 8 is a schematic view of the range of 2.5MeV photons in a lead material in the third embodiment of the present invention;
fig. 9 is a monte carlo simulation diagram of photons of 2.5MeV in a beam line with a shielding device according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
This embodiment can be applicable to the condition of shielding particle radiation in the beam pipeline of particle accelerator, and this shield assembly includes: the shielding device comprises at least two shielding parts, wherein each shielding part comprises a shielding part body and at least one splicing end, and the shielding parts are spliced through the at least two splicing ends to form a shielding device comprising a central through hole; the central through hole is used for accommodating a beam pipeline of the particle accelerator; wherein,
at least two shielding part include first shielding part and second shielding part, first shielding part's first concatenation end is provided with the card protrudingly, second shielding part's second concatenation end is provided with the draw-in groove, the card protrudingly with the cooperation of draw-in groove joint is used.
Illustratively, the shielding member body may be a regular three-dimensional structure; of course, other irregular three-dimensional structures are also possible. For ease of machining, the shield member body is preferably a cylindrical structure containing a central through hole, which may be a cylindrical structure, for example.
Illustratively, the splice end is located at an axial or radial end of the shield member body. The axial direction can be understood as the direction of the center of the through hole of the central through hole, that is, the axial direction of the beam conduit, or can be understood as the moving direction of the particle beam.
Wherein the first splice end comprises at least one first radial splice end and/or at least one first axial splice end; the second splice end comprises at least one second radial splice end and/or at least one second axial splice end.
Referring to the schematic diagram of the shielding device shown in fig. 1, the shielding device comprises 6 shielding members. The shielding members are spliced around the beam conduit 140 so that most of the photons radiated in the beam conduit 140 can be effectively shielded by the shielding device.
Wherein the shielding member 111 and the shielding member 112 each comprise a shielding member body and 3 splices. The radial splicing end 113A and the radial splicing end 114A of the shielding part 111 are both provided with a snap; the radial splicing end 113B and the radial splicing end 114B of the shielding component 112 are both provided with a clamping groove; the clamping protrusion of the radial splicing end 113A is in clamping fit with the clamping groove of the radial splicing end 113B; the snap-fit of the radial splice end 114A and the snap-fit of the radial splice end 114B. The axial splicing end 115A of the shielding component 111 and the axial splicing end 115B of the shielding component 112 are also respectively provided with a clamping groove for clamping and matching with clamping protrusions of other shielding components which are axially connected.
The shielding member 121 and the shielding member 122 each include a shielding member body and 4 splicing ends. The radial splicing end 123A and the radial splicing end 124A of the shielding member 121 are both provided with a snap; the radial splicing end 123B and the radial splicing end 124B of the shielding part 122 are both provided with a clamping groove; the clamping protrusion of the radial splicing end 123A is in clamping fit with the clamping groove of the radial splicing end 123B; the snap-fit of the radial splice end 124A and the snap-fit of the radial splice end 124B. A clamping protrusion is arranged on the axial splicing end 125A of the shielding component 121 and is in clamping fit with a clamping groove arranged on the axial splicing end 115A of the shielding component 111; a snap projection is provided on the axial mating end 125B of the shielding member 122 to snap fit with a snap groove provided on the axial mating end 115B of the shielding member 112. The axial splicing end 126A of the shielding component 121 and the axial splicing end 126B of the shielding component 122 are also provided with clamping grooves respectively for clamping and matching with clamping protrusions of other shielding components connected axially.
The shielding member 131 and the shielding member 132 each include a shielding member body and 3 splicing ends. The radial splicing end 133A and the radial splicing end 134A of the shielding member 131 are both provided with a snap; the radial splicing end 133B and the radial splicing end 134B of the shielding component 132 are both provided with a clamping groove; the clamping protrusion of the radial splicing end 133A is in clamping fit with the clamping groove of the radial splicing end 133B; the snap-fit of the radial splice end 134A and the snap-fit of the radial splice end 134B. A clamping protrusion is arranged on the axial splicing end 135A of the shielding component 131 and is in clamping fit with a clamping groove arranged on the axial splicing end 126A of the shielding component 121; a snap projection is provided on the axial mating end 135B of the shield member 132 for snap-fit engagement with a snap groove provided on the axial mating end 126B of the shield member 122.
The resulting shielding device after splicing the shielding components shown in fig. 1 can be seen in fig. 2.
The first splicing end comprises two first radial splicing ends, one of the two first radial splicing ends is provided with a clamping protrusion, and the other first radial splicing end is provided with a clamping groove.
The shielding member body is exemplified as a cylindrical structure. Fig. 3A exemplarily shows an orientation view of a first shielding member.
Wherein the first shielding member comprises a shielding member body 310A and at least one first splice end 320A. Wherein the first mating end 320A includes at least one snap-projection structure therein. Wherein, there is a recess 330A in the center of the shielding member for accommodating the beam conduit of the particle accelerator. The shielding body 310A may be an integrally formed structure, or may be formed by splicing and combining different parts. Illustratively, the shield member body 310A and the at least one first splice end 320A are an integrally molded structure. Illustratively, a shielding component including a shielding component body 310A and at least one first splice end 320A includes a shielding layer and a support layer. The shielding layer is made of photon shielding material, such as lead; wherein the support layer is a rigid material, which may be steel, for example.
Fig. 3B exemplarily shows an orientation view of a second shielding member.
Wherein the second shielding member comprises a shielding member body 310B and at least one second splice end 320B. Wherein the second mating end 320B includes at least one slot structure therein. Wherein, there is a recess 330B in the center of the shielding member for accommodating the beam conduit of the particle accelerator. The shielding body 310B may be an integrally formed structure, or may be formed by splicing and combining different parts. Illustratively, the shield member body 310B and the at least one second splice end 320B are an integrally molded structure. Illustratively, the shielding component including the shielding component body 310B and the at least one second splice end 320B includes a shielding layer and a support layer. The shielding layer is made of photon shielding material, such as lead; wherein the support layer is a rigid material, which may be steel, for example.
Wherein, the clamping protrusion of the first shielding part shown in fig. 3A and the clamping groove of the second shielding part shown in fig. 3B are in clamping fit. The recess 330A in the first shielding member and the recess 330B in the second shielding member may form a central through hole for completely accommodating the beam conduit of the particle accelerator.
It should be noted that fig. 3A and 3B only show an exemplary case where one shielding member is formed by snap-fitting one first shielding member and one second shielding member, and it is understood that it is also possible to form one shielding member by snap-fitting at least one first shielding member and at least one second shielding member by changing the size of the first shielding member and/or the second shielding member.
The first shielding member and the second shielding member may have the same structure or different structures. When at least one first shielding part and at least one second shielding part are clamped to form one shielding part, the first shielding part can also be a second shielding part comprising a second splicing end; the second shielding member may also be a first shielding member comprising a first splice end.
According to the particle accelerator, the first splicing end with the clamping protrusions and the second splicing end with the clamping grooves are matched in a clamping mode, the first shielding part comprising the first splicing end and the second shielding part comprising the second splicing end are radially spliced to form the shielding device comprising the central through hole, and the beam pipeline of the particle accelerator penetrates through the central through hole, so that when particles impact the side wall of the beam pipeline to generate prompt photon radiation, the radiation generated when the particle accelerator is used can be shielded, and the threat to the health of operators or patients around the particle accelerator is reduced.
Example two
Fig. 3A and 3B in the first embodiment of the present invention show the situation where the splicing end is located at the radial end, and fig. 4 shows the situation where the splicing end is located at the axial end on the basis of the technical solutions of the above embodiments.
Wherein fig. 4 exemplarily shows a case where the shielding apparatus includes 3 shielding members. Wherein the shielding member at one end of the shielding device comprises a shielding member body 410A and a second splicing end 420A; the shielding member located in the middle of the shielding apparatus includes a shielding member body 410B and a first splice end 420B and a second splice end 420C; the shielding member at the other end of the shielding device comprises a shielding member body 410C and a first splice end 420D. Wherein the first splicing end 420B is provided with a snap; the second splicing end 420A is provided with a clamping groove matched with the clamping protrusion arranged on the first splicing end 420B; wherein the first splicing end 420D is provided with a snap; the second splice end 420C is provided with a slot that mates with the snap-fit protrusion provided on the first splice end 420D. The hollow groove included in the center of each shielding part penetrates through to form a central through hole for accommodating a beam pipeline 430 of the particle accelerator.
Illustratively, the shield member body 410A is an integrally molded structure, the shield member body 410B is an integrally molded structure, and/or the shield member body 410C is an integrally molded structure. Illustratively, the shielding component including the shielding component body 410A and the second splice 420A is an integrally formed structure, the shielding component including the shielding component body 410B, the first splice 420B, and the second splice 420C is an integrally formed structure, and/or the shielding component including the shielding component body 410C, the first splice 420D is an integrally formed structure.
Illustratively, the shielding component comprises a shielding layer and a supporting layer, wherein the supporting layer is coated on the outer side of the shielding layer; the supporting layer is made of rigid materials.
Illustratively, the shield member body 310B and the at least one second splice end 320B are an integrally molded structure. Illustratively, the shielding component including the shielding component body 310B and the at least one second splice end 320B includes a shielding layer and a support layer. The shielding layer is made of photon shielding material, such as lead; wherein the support layer is a rigid material, which may be steel, for example.
It is understood that the number of shielding members may be increased or decreased depending on the length of the beam line 430; preferably, the shielding device formed by splicing the shielding parts can completely cover the beam pipeline.
The clamping protrusion arranged at the first splicing end and the clamping groove pair arranged at the second splicing end can be completely or partially matched. It is understood that the snap protrusions provided at the first splicing ends between different shielding members may be the same or different; the card slots of the second splice end between different shielding components may be the same or different. For convenience of manufacturing and installation, the clamping protrusions arranged at the first splicing ends are preferably identical; the clamping grooves arranged at the second splicing ends are completely the same. In order to enhance the shielding effect, preferably, the clamping protrusion arranged at the first splicing end and the clamping groove pair arranged at the second splicing end are completely matched.
According to the particle accelerator, the first splicing end with the clamping protrusions and the second splicing end with the clamping grooves are matched in a clamping mode, the first shielding part with the first splicing end and the second shielding part with the second splicing end are axially spliced to form the shielding device with the central through hole, and the beam pipeline of the particle accelerator penetrates through the central through hole, so that when particles impact the side wall of the beam pipeline to generate prompt photon radiation, the radiation generated when the particle accelerator is used can be shielded, and the threat to the health of operators or patients around the particle accelerator is reduced.
EXAMPLE III
On the basis of the technical solutions of the above embodiments, the embodiments of the present invention provide a preferred implementation.
Referring to the schematic perspective view of the first shielding member shown in fig. 5, the first shielding member includes a first radial splice end 510A; wherein the first radial splice end 510A is provided with a first snap projection. Wherein the first shielding member is further provided with a recess 530 at the center for accommodating a beam conduit of the particle accelerator.
Further, the first shield member also includes a first radial splice end 510B; wherein the first radial splice end 510B is provided with a second snap projection. Preferably, the first and second tabs are identical.
Further, the first shielding member further comprises a first axial splice end 520A; wherein the first axial splicing end 520A is provided with a third snap projection.
Further, the first shielding member further includes a second axial splice end 520B; wherein the second axial splicing end 520B is provided with a fourth card slot. Preferably, the third snap projection and the fourth snap groove are completely matched.
Further, the shield member body and the respective splice ends of the first shield member shown in fig. 5 are integrally formed.
Referring to the schematic perspective view of the second shielding member shown in fig. 6, the second shielding member includes a second radial splice end 610A; the second radial splicing end 610A is provided with a first clamping groove, which can be engaged with the first convex clamping groove of the first radial splicing end 510A in fig. 5. Preferably, the first snap projection and the first snap groove are completely matched. The center of the second shielding member is further provided with a groove 630, and a through hole structure is formed by the groove 630 and the groove 530 arranged on the first shielding member, and is used for accommodating a beam pipeline of the particle accelerator.
Further, the second shield member also includes a second radial splice end 610B; the second radial splicing end 610B is provided with a second clamping groove, which can be engaged with the second convex clamping groove of the first radial splicing end 510B in fig. 5. Preferably, the second snap projection and the second snap groove are completely matched.
Further, the second shielding member further comprises a first axial splice end 620A; the first axial splicing end 620A is provided with a third clamping protrusion, which can be matched with a fourth clamping groove formed in the shielding component spliced along the axial direction and including the second axial splicing end. Preferably, the third snap projection and the fourth snap groove are completely matched.
Further, the second shielding member further comprises a second axial splice end 620B; the second axial splicing end 620B is provided with a fourth clamping groove, and can be matched with a third clamping protrusion arranged on a shielding component spliced along the axial direction and including the first axial splicing end. Preferably, the third snap projection and the fourth snap groove are completely matched.
Further, the radial thickness of the clamping protrusion of the first radial splicing end is 5% -40% of the radial thickness of the shielding component body. Correspondingly, the radial thickness of the clamping groove of the second radial splicing end is 5% -40% of the radial thickness of the shielding part body. The radial thickness of the clamping protrusion of the first radial splicing end is not more than that of the clamping groove of the second radial splicing end; preferably, the radial thickness of the clamping projection of the first radial splicing end is equal to the radial thickness of the clamping groove of the second radial splicing end.
Further, the radial thickness of the snap projection of the first axial splicing end is 5% -40% of the radial thickness of the shielding component body. Correspondingly, the radial thickness of the clamping groove of the second axial splicing end is 5% -40% of the radial thickness of the shielding part body. The radial thickness of the clamping protrusion of the first axial splicing end is not more than that of the clamping groove of the second axial splicing end; preferably, the radial thickness of the clamping projection of the first axial splicing end is equal to the radial thickness of the clamping groove of the second axial splicing end.
Further, the axial width of the snap projection of the first radial splice end is at least 5% of the axial width of the shield member body. Correspondingly, the axial width of the clamping groove of the second radial splicing end is at least 5% of the axial width of the shielding part body. The axial width of the clamping protrusion of the first radial splicing end is not greater than the axial width of the clamping groove of the second radial splicing end; preferably, the axial width of the snap projection of the first radial splicing end is equal to the axial width of the snap groove of the second radial splicing end.
Further, the axial width of the snap projection of the first axial splicing end is 5% -40% of the axial width of the shielding component body. Correspondingly, the axial width of the clamping groove of the second axial splicing end is 5% -40% of the axial width of the shielding part body. The axial width of the clamping protrusion of the first axial splicing end is not greater than that of the clamping groove of the second axial splicing end; preferably, the axial width of the snap projection of the first axial splicing end is equal to the axial width of the snap groove of the second axial splicing end.
Further, the tangential length of the snap projection of the first radial splicing end is 5% -40% of the tangential length of the shielding component body. Correspondingly, the tangential length of the clamping groove of the second radial splicing end is 5% -40% of the tangential length of the shielding part body. The tangential length of the clamping protrusion of the first radial splicing end is not greater than that of the clamping groove of the second radial splicing end; preferably, the tangential length of the snap projection of the first radial splice end is equal to the tangential length of the snap groove of the second radial splice end.
Further, the tangential length of the snap projection of the first axial splicing end is at least 5% of the tangential length of the shielding member body. Correspondingly, the tangential length of the clamping groove of the second axial splicing end is at least 5% of the tangential length of the shielding part body. The tangential length of the clamping protrusion of the first axial splicing end is not greater than that of the clamping groove of the second axial splicing end; preferably, the tangential length of the snap projection of the first axial splicing end is equal to the tangential length of the snap groove of the second axial splicing end.
Furthermore, the shielding device body is a cylindrical ring. The circumferential arc length of the clamping protrusion of the first radial splicing end is 5% -40% of the circumferential arc length of the shielding component body. Correspondingly, the circumferential arc length of the clamping groove of the second radial splicing end is 5% -40% of the circumferential arc length of the shielding part body. The circumferential arc length of the clamping protrusion of the first radial splicing end is not greater than that of the clamping groove of the second radial splicing end; preferably, the circumferential arc length of the clamping projection of the first radial splicing end is equal to the circumferential arc length of the clamping groove of the second radial splicing end.
Furthermore, the shielding device body is a cylindrical ring. The circumferential arc length of the clamping projection of the first axial splicing end is at least 5% of the circumferential arc length of the shielding component body. Correspondingly, the circumferential arc length of the clamping groove of the second axial splicing end is at least 5% of the circumferential arc length of the shielding part body. The circumferential arc length of the clamping protrusion of the first circumferential splicing end is not less than that of the clamping groove of the second axial splicing end; preferably, the circumferential arc length of the clamping projection of the first circumferential splicing end is equal to the circumferential arc length of the clamping groove of the second axial splicing end.
Further, the shielding component comprises a shielding layer and a supporting layer, and the supporting layer is coated on the outer side of the shielding layer; the supporting layer is made of rigid materials.
Because the beam pipeline of the particle accelerator is made of iron materials, instantaneous photon radiation is generated after protons or heavy ions moving at high speed impact the iron materials. See figure 7 for an energy Spectrum (Photon energy Spectrum) of a proton prompt Photon, wherein the abscissa is the prompt Photon energy in megaelectron volts (MeV); the ordinate is the number of photons radiated. Since the number of photons of radiation close to 2.5MeV is the largest, the maximum energy photon that needs to be shielded can be determined to be 2.5 MeV.
Preferably, lead is used as the photon shielding material of the shielding layer. Referring to the range diagram of 2.5MeV photons in lead material as shown in fig. 8, 90% of the photons are shielded when the lead is 5cm thick. Wherein the abscissa of fig. 8 is the thickness of the lead material in centimeters (cm); the ordinate is the ratio of the remaining number of photons. The shielding effect when using 5cm lead for shielding can be seen in the monte carlo simulation shown in figure 9. Wherein, the abscissa in fig. 9 is the length of the beam conduit, and the origin 0 corresponds to the starting position of the shielding device installed in the beam conduit, and the unit is centimeter (cm); the ordinate is the thickness of the shielding layer, and the origin 0 corresponds to the axis position of the beam pipeline, and the unit is centimeter (cm).
Preferably, the rigid material is 5mm thick.
In order to fix the shielding device formed by clamping the shielding parts, at least one fixing structure can be arranged at two ends of the shielding device; at least one securing structure may also be provided spaced outwardly of the shielding device. The fixing structures arranged at the two ends of the shielding device can be threaded mounting structures, and can also be clamps, buckles or the like; the fixing structures arranged at intervals outside the shielding device can be clamping band structures and the like.
Example four
The embodiment of the invention also provides a particle accelerator which comprises the shielding device provided by the technical scheme of each embodiment.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (11)
1. A shielding device is applied to a particle accelerator and is characterized by comprising at least two shielding parts, wherein each shielding part comprises a shielding part body and at least one splicing end, and the shielding parts are spliced through the at least two splicing ends to form the shielding device comprising a central through hole; the central through hole is used for accommodating a beam pipeline of the particle accelerator; wherein,
at least two shielding part include first shielding part and second shielding part, first shielding part's first concatenation end is provided with the card protrudingly, second shielding part's second concatenation end is provided with the draw-in groove, the card protrudingly with the cooperation of draw-in groove joint is used.
2. A shielding arrangement according to claim 1, wherein the first splice end comprises at least one first radial splice end and/or at least one first axial splice end; the second splice end comprises at least one second radial splice end and/or at least one second axial splice end.
3. The shielding device of claim 2, wherein the first splice end comprises two first radial splice ends, one of the two first radial splice ends being provided with a snap projection and the other first radial splice end being provided with a snap groove.
4. A shielding arrangement according to claim 2, wherein the radial thickness of the snap-projection of the first radial termination and/or the snap-projection of the first axial termination is 5-40% of the radial thickness of the shielding member body.
5. A shielding arrangement according to claim 2, wherein the axial width of the snap projection of the first radial splice end is at least 5% of the axial width of the shield member body; and/or the presence of a gas in the gas,
the axial width of the clamping protrusion of the first axial splicing end is 5% -40% of the axial width of the shielding part body.
6. A shielding arrangement according to claim 2, wherein the tangential length of the snap projection of the first radial termination end is 5-40% of the tangential length of the shielding member body; and/or the presence of a gas in the gas,
the tangential length of the snap projection of the first axial splice end is at least 5% of the tangential length of the shield member body.
7. The shielding device of claim 6, wherein the shielding device body is a cylindrical ring, and the circumferential arc length of the snap projection of the first radial splice end is 5% to 40% of the circumferential arc length of the shielding component body; and/or the presence of a gas in the gas,
the circumferential arc length of the clamping projection of the first axial splicing end is at least 5% of the circumferential arc length of the shielding component body.
8. The shielding device of claim 1, wherein the locking projection of the first splice end is configured to fully engage the locking slot of the second splice end.
9. A shielding device according to any one of claims 1-8, characterized in that the shielding member body and the at least one splice end are of an integrally formed construction.
10. The shielding device of claim 9, wherein the shielding component comprises a shielding layer and a supporting layer, and the supporting layer covers the shielding layer; the supporting layer is made of rigid materials.
11. A particle accelerator comprising a shielding device as claimed in any one of claims 1 to 10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257174.0A CN109041400A (en) | 2018-10-26 | 2018-10-26 | A kind of screening arrangement and particle accelerator |
| CN201910649021.9A CN110198591A (en) | 2018-10-26 | 2019-07-18 | A kind of screening arrangement and particle accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257174.0A CN109041400A (en) | 2018-10-26 | 2018-10-26 | A kind of screening arrangement and particle accelerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109041400A true CN109041400A (en) | 2018-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811257174.0A Pending CN109041400A (en) | 2018-10-26 | 2018-10-26 | A kind of screening arrangement and particle accelerator |
| CN201910649021.9A Pending CN110198591A (en) | 2018-10-26 | 2019-07-18 | A kind of screening arrangement and particle accelerator |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910649021.9A Pending CN110198591A (en) | 2018-10-26 | 2019-07-18 | A kind of screening arrangement and particle accelerator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753438A (en) * | 2019-11-02 | 2020-02-04 | 中国原子能科学研究院 | Beam line magnet shielding device and shielding method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9417175D0 (en) * | 1994-08-25 | 1994-10-12 | Hare John T | Radiation shield |
| US5814825A (en) * | 1996-01-22 | 1998-09-29 | Mussman; Robert L. | Radiation shields for valves |
| JPH11283796A (en) * | 1998-03-27 | 1999-10-15 | Sumitomo Heavy Ind Ltd | Beam transporting device |
| US6190303B1 (en) * | 1999-01-25 | 2001-02-20 | Isostent, Inc. | Shield assembly with removable inner-tube apparatus for radioactive stents |
| US6916205B1 (en) * | 2002-02-08 | 2005-07-12 | The Furukawa Electric Co., Ltd. | Shield electric cable connector |
| KR101717592B1 (en) * | 2015-10-01 | 2017-03-20 | 대우조선해양 주식회사 | Guide tube for shielding radiation |
| JP6820669B2 (en) * | 2016-05-18 | 2021-01-27 | 株式会社竹中工務店 | Radiation shield |
| CN211128364U (en) * | 2018-10-26 | 2020-07-28 | 新瑞阳光粒子医疗装备(无锡)有限公司 | Shielding device and particle accelerator |
-
2018
- 2018-10-26 CN CN201811257174.0A patent/CN109041400A/en active Pending
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2019
- 2019-07-18 CN CN201910649021.9A patent/CN110198591A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110753438A (en) * | 2019-11-02 | 2020-02-04 | 中国原子能科学研究院 | Beam line magnet shielding device and shielding method |
| CN110753438B (en) * | 2019-11-02 | 2020-11-10 | 中国原子能科学研究院 | A beamline magnet shielding device and shielding method |
Also Published As
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| CN110198591A (en) | 2019-09-03 |
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