CN220340413U - Beam current detection device - Google Patents

Abstract

The application relates to a beam current detection device, including: an adjustment assembly comprising a support unit fixed at the beam outlet, and further comprising at least one of a first adjustment unit, a second adjustment unit, at least one of the first adjustment unit, the second adjustment unit being connected to the support unit; the installation assembly is detachably connected with the adjusting assembly; a detection element fixed to the mounting assembly; the first adjusting unit and the second adjusting unit are used for adjusting the position of the detecting element along different directions. Through the beam detection device of the application, an operator can install the detection element in a place far away from the irradiation system, and the position of the detection element is quickly and conveniently adjusted in different directions by utilizing the adjusting component at the position close to the beam outlet of the irradiation system, so that the detection efficiency is improved, and the exposure dose of the operator at the beam outlet is effectively reduced.

Description

Beam current detection device

Technical Field

The present disclosure relates to the field of beam detection technologies, and in particular, to a beam detection device.

Background

With the development of atomic science, radiation therapy such as cobalt sixty, linac, electron beam, etc. has become one of the main means for cancer therapy. In one aspect, the radiation therapy includes photon or electron therapy. The limitation of the physical condition of the radioactive rays in the mode can kill tumor cells and simultaneously damage a large amount of normal tissues on the beam path; in addition, due to the different sensitivity of tumor cells to radiation, the therapeutic effect on malignant tumors with relatively high radiation resistance (such as glioblastoma multiforme (Glioblastoma Multiforme) and Melanoma (Melanoma)) is often poor. On the other hand, in view of the above problems, the concept of target treatment in Chemotherapy (Chemotherapy) is applied to radiotherapy. For tumor cells with high radiation resistance, radiation sources with high relative biological effects (Relative Biological Effectiveness, RBE), such as proton therapy, heavy particle therapy, neutron capture therapy, etc., are also actively developed.

Before the actual irradiation of the radiation, the parameters of the beam need to be detected by a detection device to determine if the beam parameters are satisfactory. The detection equipment needs to be installed and arranged and aligned with the beam outlet during detection, and a great amount of time is required to be spent in the using process of the conventional detection tool to adjust the position of the detection equipment, so that the working efficiency is lower particularly when different detection equipment needs to be switched for multiple times; at the same time, adjusting and switching multiple times also increases the radiation exposure risk for the staff.

Disclosure of Invention

In view of the above, it is necessary to provide a beam detector that is efficient, accurate, and highly safe.

In one aspect, the present utility model provides a beam detection apparatus, including: an adjustment assembly comprising a support unit fixed at the beam outlet, and further comprising at least one of a first adjustment unit, a second adjustment unit, at least one of the first adjustment unit, the second adjustment unit being connected to the support unit; the installation assembly is detachably connected with the adjusting assembly; a detection element fixed to the mounting assembly; the first adjusting unit and the second adjusting unit adjust the position of the detecting element along different directions, specifically, the first adjusting unit adjusts the position of the detecting element along a first direction, and the second adjusting unit is used for adjusting the position of the detecting element along a second direction so that the detecting element is located at a target position capable of performing beam detection; the first direction is perpendicular to the second direction.

In one embodiment, the first adjusting unit is connected to the mounting assembly, and the first adjusting unit is used for driving the mounting assembly to move along a first direction relative to the supporting unit. Further, the first direction is a horizontal direction parallel to the plane of the beam outlet.

In one embodiment, the support unit is provided with a guide groove extending along a first direction, the first adjusting unit comprises a first moving block matched with the guide groove and a first driving piece used for driving the first moving block to move along the guide groove, and the first moving block is connected with the mounting assembly. Further, the first driving piece moves under the action of external force to drive the first moving block to move in the guide groove so as to drive the mounting assembly to move along the first direction. The first motion block is directly or indirectly coupled to the mounting assembly.

In one embodiment, the second adjustment unit is connected to the first motion block. Further, the installation component is indirectly connected with the first motion block through the second adjusting unit, and the second adjusting unit and the installation component are integrally moved along the first direction under the motion drive of the first motion block.

In one embodiment, the mounting assembly is detachably connected to the second adjustment unit, which is connected to the first adjustment unit. Further, the mounting assembly includes a first connector detachably connected to the second adjustment unit. The second adjusting unit comprises a second connecting piece used for connecting the first connecting piece, and the first connecting piece is connected with the second connecting piece in a clamping mode.

In one embodiment, the second adjusting unit comprises a second moving block and a second driving piece for driving the second moving block to move along a second direction relative to the supporting unit, and the mounting assembly is detachably connected with the second moving block. Further, the second motion block is arranged at one end of the second driving piece, and the second driving piece moves along the second direction and drives the second motion block to move. Further, the second connecting piece is arranged on the second moving block, and the installation assembly is detachably connected with the second moving block through the second connecting piece. Further, the second direction is a vertical direction parallel to the plane of the beam outlet.

In one embodiment, the second motion block is connected to the first adjustment unit. Further, the second driving member is connected to the first moving block, and at least one of the second moving block or the second driving member is movable in a second direction relative to the first moving block. Further, the first moving block is provided with a guide hole, and the second driving piece penetrates through the guide hole and can move relative to the first moving block.

In one embodiment, the mounting assembly includes a bracket coupled to the adjustment assembly and a mount disposed on the bracket, the bracket disposed at least partially around the beam outlet, the mount for mounting the detection element. Further, the area of the area surrounded by the support is larger than the area of the beam outlet.

In one embodiment, the bracket is provided with a first connecting piece which is detachably connected with the adjusting assembly. Further, the bracket is provided with at least a first bracket body connected with one of the first adjusting unit and the second adjusting unit, and is provided with at least a second bracket body provided with a mounting seat. Further, a first connecting piece is arranged on the first frame body and is connected with the first adjusting unit or the second adjusting unit.

In one embodiment, the mounting includes at least one mounting portion for mounting the sensing element. Further, the mounting portion includes a mounting hole provided on the mounting seat, the mounting hole being used for connecting the mounting needle or the detecting element.

In one embodiment, the detection device further comprises a locking member that locks the mounting assembly and the adjustment assembly. Further, the locking piece is arranged on the second adjusting unit and used for locking the position of the installation assembly relative to the second adjusting assembly. Further, the locking piece is connected with the second moving block or the second connecting piece, and the locking piece is used for locking the position of the first connecting piece relative to the second moving block or the second connecting piece.

The beam detection device detachably installs the detection element to the adjusting component through the installation component, and the adjusting component is utilized to realize the integral position adjustment of the installation component and the detection element. The operator can install the detecting element in the place that keeps away from irradiation system, is close to irradiation system beam exit, utilizes adjusting part to realize in different directions fast, conveniently adjusting the position of detecting element, has improved the efficiency of detection installation, reduces the exposure dose of operating personnel at the beam flow mouth effectively.

Drawings

FIG. 1 is a schematic view of a detection device according to an embodiment mounted to a beam outlet;

FIG. 2 is a schematic diagram of an irradiance system according to one embodiment;

FIG. 3 is a schematic diagram of a detecting device according to an embodiment;

FIG. 4 is another schematic view of FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along the plane A-A of FIG. 4;

FIG. 6 is a schematic diagram of another embodiment of a test element installation.

Description of the reference numerals:

and (3) an irradiation system: 1, a step of; beam current detection device: 10; neutron generating device: 20, a step of; beam shaping body: 30;

and an adjusting assembly: 100; a first adjusting unit: 110; a second adjusting unit: 120; a first motion block: 111; a first driving member: 112; a movement part: 1111; positioning part: 1112; and a second positioning piece: 1113; a third retainer 1114; a second motion block: 121; and a second driving member: 122, a step of; third guide bar: 123, a step of; and a second connecting piece: 124; locking piece: 125; and a supporting unit: 130; a guide groove 131; and (3) a supporting piece: 132, a part of the material; first positioning piece: 133; and (3) mounting an assembly: 200; and (3) a bracket: 210; and (2) a mounting seat: 220; a first connector: 211; first support body: 212; the second frame body: 213; mounting part: 221,221'; and (3) mounting a needle: 222, a step of; detection element: 300,300';

an accelerator: 21, a step of; beam transmission device: 22; a reflector: 31; retarder: 32; thermal neutron absorber: 33; radiation shield: 34; beam passage: 35; a collimator: 36; beam outlet: 37.

Detailed Description

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is, however, susceptible of embodiment in many other forms than those described herein and similar modifications can be made by those skilled in the art without departing from the spirit of the application, and therefore the application is not to be limited to the specific embodiments disclosed below.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operated in a particular orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a beam detection device according to an embodiment of the present application. The beam detection apparatus 10 of the present embodiment includes an adjusting assembly 100, a mounting assembly 200, and a detection element 300. The mounting assembly 200 is used to mount the sensing element to the adjustment assembly 100, and the mounting assembly 200 is detachably connected to the adjustment assembly 100. The adjustment assembly 100 is used to adjust the position of the detection element 300 and/or the mounting assembly 200 relative to the beam outlet 37, as shown in fig. 1, such that the detection element 300 is in a target position that is capable of performing the desired beam detection.

As a preferred example of the present embodiment, the irradiation system 1 is a boron neutron capture therapy (Boron Neutron Capture Therapy, abbreviated as BNCT) system, and the composition and principle of the irradiation system 1 will be described below by taking the boron neutron capture therapy system as an example.

The main principle of boron neutron capture treatment is as follows: the irradiated body M is taken or injected with boron ^B- 10 After the medicine, the boron-containing medicine is selectively gathered in tumor cells and then the boron-containing medicine is utilized ^B- 10 Drug has high capture cross section for thermal neutrons by ¹⁰ B(n,α) ⁷ Li neutron capture and nuclear fission reaction generation ⁴ He (He) ⁷ Li two heavy charged particles, the average energy of the two heavy charged particles is about 2.33MeV, the particles have the characteristics of high linear transfer (Linear Energy Transfer, LET) and short range, and the total range of the two particles is about equal to one cell size, so that the radiation injury energy caused to organisms is limited to the cell level, and the aim of killing tumor cells locally can be achieved on the premise of not causing too great injury to normal tissues. By means of the specific aggregation of the boron-containing medicine in tumor cells and the combination of accurate neutron beam regulation, better cancer treatment selection than traditional radioactive rays is provided.

As shown in fig. 2, the neutron generating device 20 includes an accelerator 21, a beam transmission device 22, and a target T, and the accelerator 21 is charged with a pair of electricityThe particles (e.g., protons, deuterons, etc.) are accelerated to produce a charged particle beam P, such as a proton beam, that irradiates and interacts with a target T, preferably a metal target, to produce a neutron beam (neutron beam) N. Suitable nuclear reactions are selected according to the required neutron yield and energy, the available energy and current of the accelerated charged particles, the physicochemical properties of the metal target, etc., and are usually discussed as ⁷ Li(p,n) ⁷ Be and Be ⁹ Be(p,n) ⁹ And B, performing an endothermic reaction. The energy thresholds of the two nuclear reactions are respectively 1.881MeV and 2.055MeV, because the ideal neutron source for boron neutron capture treatment is epithermal neutrons with the energy level of keV, in theory, if protons with the energy only slightly higher than the threshold are used for bombarding a metal lithium target, relatively low-energy neutrons can Be generated, the clinical application can Be realized without too much slowing treatment, however, the proton action cross sections of the two targets of lithium metal (Li) and beryllium metal (Be) and the threshold energy are not high, and in order to generate enough neutron flux, protons with higher energy are generally selected for initiating the nuclear reactions. The ideal target material should have the characteristics of high neutron yield, close neutron energy distribution generated to the epithermal neutron energy region, no generation of too much strong penetrating radiation, safety, low cost, easy operation, high temperature resistance and the like, but in practice, no nuclear reaction meeting all requirements can be found, and in the embodiment, the target material made of lithium metal is preferable. However, as is well known to those skilled in the art, the material of the target T may be made of a metal material other than lithium, beryllium, for example, tantalum (Ta) or tungsten (W), etc.; the target T may be a disk, may be another solid, or may be a liquid (liquid metal). The accelerator 21 may be a linear accelerator, a cyclotron, a synchrotron, a synchrocyclotron, or the neutron production device 20 may be a nuclear reactor without using an accelerator or a target.

Regardless of whether the neutron source of the boron neutron capture treatment is derived from nuclear reaction of charged particles of a nuclear reactor or accelerator with a target, the generated radiation field is actually a mixed radiation field, i.e. the beam contains neutrons and photons with low energy to high energy. For boron neutron capture treatment of deep tumors, the more radiation content is left, except for epithermal neutrons, the greater the proportion of non-selective dose deposition of normal tissue is, so the radiation content which can cause unnecessary dose deposition should be reduced as much as possible. The beam shaping body 30 is used for adjusting the beam quality of the neutron beam generated by the neutron generating device 20 and performing irradiation, reducing unnecessary dose deposition and converging the neutron beam, so that the neutron beam has higher targeting in the treatment process.

Specifically, the beam shaping body 30 has a collimator 36 for converging the neutron beam at one end thereof near the irradiated body M. The neutron beam N generated by the neutron generator 20 irradiates the irradiation target M through the beam shaping body 30 and the beam outlet 37 in this order. The beam shaping body 30 can adjust the beam quality of the neutron beam N generated by the neutron generator 20. Further, the collimator 36 is disposed at the outlet of the beam shaping body 30, where the beam outlet 37 is the outlet of the collimator 36, so as to converge the neutron beam N, so that the neutron beam N has a higher targeting property in the treatment process. It will be appreciated that the present embodiment may be implemented without a collimator, and the beam may be directly irradiated to the irradiated object M after exiting the beam shaping body 30, and the beam outlet 37 is an outlet of the beam shaping body 30.

The beam shaping body 30 further comprises a reflector 31, a retarder 32, a thermal neutron absorber 33, a radiation shielding 33 and a beam channel 35, neutrons generated by the neutron generating device 20 need to reduce the neutron and photon contents of other types as much as possible to avoid hurting operators or irradiated bodies except for epithermal neutrons to meet treatment requirements due to a wide energy spectrum, so that neutrons coming out of the target T need to adjust fast neutron energy (> 40 keV) therein to an epithermal neutron energy region (0.5 eV-40 keV) and reduce thermal neutrons (< 0.5 eV) as much as possible through the retarder 32, the retarder 32 is made of a material with a large fast neutron action cross section and a small epithermal neutron action cross section, and as a preferred embodiment, the retarder 32 is made of D ₂ O、AlF ₃ 、Fluental ^TM 、CaF ₂ 、Li ₂ CO ₃ 、MgF ₂ And Al ₂ O ₃ At least one of them; the reflector 31 surrounds the retarder 32 and reflects neutrons diffused around through the retarder 32 back to the neutron beam N to improve neutron utilization, and is made of a material with strong neutron reflection capability as a materialIn a preferred embodiment, the reflector 31 is made of at least one of Pb or Ni; the thermal neutron absorber 33 is arranged at the rear part of the retarder 32 and is made of a material with a large cross section with thermal neutrons, as a preferred embodiment, the thermal neutron absorber 33 is made of Li-6, the thermal neutron absorber 33 is used for absorbing thermal neutrons passing through the retarder 32 to reduce the content of thermal neutrons in a neutron beam N, excessive doses caused by the action of the thermal neutrons with shallow normal tissues during treatment are avoided, and it is understood that the thermal neutron absorber 33 can also be integrated with the retarder, and the material of the retarder contains Li-6; the radiation shield 34 is used to shield neutrons and photons leaking from portions outside the beam path 35, and the material of the radiation shield 34 comprises at least one of a photon shielding material and a neutron shielding material, and as a preferred embodiment, the material of the radiation shield 34 comprises a photon shielding material lead (Pb) and a neutron shielding material Polyethylene (PE). The beam outlet 37 is provided at the rear of the beam passage 35, and the epithermal neutron beam exiting from the beam outlet 37 irradiates the irradiated body M, and is retarded to thermal neutrons after passing through the shallow normal tissue, to reach the tumor cells of the irradiated body M.

The beam detection device 10 is arranged at a beam outlet 37 of the irradiation system 1, the irradiation system 1 generates a radioactive beam and the beam is emitted by the beam outlet 37, and the beam detection device 10 detects parameters of the beam.

As shown in fig. 3 and 4, the adjusting assembly 100 includes a first adjusting unit 110, a second adjusting unit 120, and a supporting unit 130. The support unit 130 is fixed at the beam outlet 37. Further, the support unit 130 is fixedly connected to the beam shaping body 30 by a fastener such as a screw. At least one of the first and second adjusting units 110 and 120 is connected to the supporting unit 130. The first adjusting unit 110 is used for adjusting the position of the detecting element 300 along the first direction a, and the second adjusting unit 120 is used for adjusting the position of the detecting element 300 along the second direction B, so that the detecting element 300 is finally located at the target position, and the first direction a and the second direction B are different. Further, the first direction a and the second direction B are perpendicular. Further, the first direction a and the second direction B are in a plane parallel to the plane of the beam outlet 37, the first direction a is a horizontal direction parallel to the plane of the beam outlet 37, and the second direction B is a vertical direction parallel to the plane of the beam outlet 37. In the present embodiment, the first adjusting unit 110 moves the mounting assembly 200 with the detecting element 300 mounted thereon along the first direction a relative to the supporting unit 130, and the second adjusting unit 120 moves the mounting assembly 200 with the detecting element 300 mounted thereon along the second direction B relative to the supporting unit 130.

The support unit 130 includes a guide groove 131 and a support 132. The support unit 130 is directly or indirectly connected to the beam shaper 30. Specifically, the support unit 130 is connected to the beam shaping body 30 by a support 132. The support unit 130 is formed with a guide groove 131 extending substantially in the first direction a, and the guide groove 131 is formed by a side of the support unit 130 being recessed inward. The first adjusting unit 110 is connected to the guide groove 131, and a part of the structure moves in the first direction a under the guide of the guide groove 131. In other embodiments, the guide groove 131 may be replaced by a protruding track or the like capable of defining the movement track of the first adjusting unit 110, which is not limited herein.

The first adjusting unit 110 includes a first moving block 111 connected to the guide groove 131 and a first driving member 112 driving the first moving block 111 to move along a trajectory defined by the guide groove 131. Specifically, the first moving block 111 moves in the first direction a with respect to the guide groove 131 under the driving action of the first driving member 112. The first driving member 112 may provide power for moving the first moving block 111, or may transmit power for driving the first moving block 111. Further, the first driving member 112 may move in the first direction a. One end of the first driving member 112 is connected to the first moving block 111, and the other end provides motive power for movement.

The first moving block 111 includes a moving portion 1111 and a positioning portion 1112. The moving part 1111 moves in the guide groove 131, and the shape of the moving part 1111 matches the shape of the guide groove 131. One end of the first driving member 112 is connected to the first moving block 111 through a positioning portion 1112, and one end of the positioning portion 1112 is convexly disposed above an opening edge of the guiding slot 131, so as to further limit a movement path of the positioning portion 1112, the first driving member 112 and the first moving block 111. The connection of the positioning portion 1112 and the first driving member 112 may be disposed outside the guide groove 131 such that the positioning portion 1112 can move along the opening edge of the guide groove 131 following the first moving block 111.

Further, the supporting unit 130 is further provided with a first positioning member 133 for guiding and/or limiting. The first driving member 112 is movably connected to the first positioning member 133, so that the first driving member 112 moves relative to the first positioning member 133, and the first positioning member 133 can assist the guiding slot 131 to limit the movement path of the first driving member 112. As a preferred embodiment, the first positioning member 133 is provided with a through hole, the surface of the through hole may be provided with an internal thread, and the outer surface of the first driving member 112 may be provided with an external thread corresponding to the internal thread of the surface of the through hole, so as to perform guiding and limiting functions on the first driving member 112 through threaded connection. In other embodiments, the first driver 112 and the first positioner 133 may also be slidably coupled.

The first motion block 111 is directly or indirectly coupled to the mounting assembly 200. In this embodiment, the first moving block 111 is connected to the mounting assembly 200 through the second adjusting unit 120, and the second adjusting unit 120 and the mounting assembly 200 are integrally moved along the first direction a under the driving of the movement of the first moving block 111.

The second adjusting unit 120 includes a second moving block 121 and a second driving piece 122. At least one of the second moving block 121 or the second driving member 122 is movable in the second direction B with respect to the first moving block 111. The second driving piece 122 drives the second moving block 121 to move in the second direction B with respect to the supporting unit 130. The second driving member 122 may provide power for moving the second moving block 121, and may also transmit power for driving the second moving block 121. One end of the second driving member 122 is connected to the second moving block 121, and the other end provides moving power, and the middle portion of the second driving member 122 is connected to the first moving block 111. Further, the second driving member 122 may move in the second direction B.

Further, the first moving block 111 includes a second positioning member 1113 for guiding and/or limiting. The second driving member 122 is movably connected to the second positioning member 1113 such that the second driving member 122 moves relative to the second positioning member 1113, and the second positioning member 1113 can provide a movement path of the first driving member 112 while limiting a movement state of the first driving member 112. The second positioning member 1113 may be a through hole directly formed on the first moving block 111, through which the second driving member 122 is connected to the first moving block 111; in another embodiment, the second positioning member 1113 may be a guide tube or other guide member embedded in the first moving block 111, and the second driving member 122 is connected to the first moving block 111 through the guide tube or other guide member. As a preferred embodiment, the inner surface of the second positioning member 1113 may be provided with an internal thread, and the outer surface of the second driving member 122 may be provided with an external thread corresponding to the internal thread of the second positioning member 1113, so as to provide a movement path and a limit for the second driving member 122 through a threaded connection.

Further, the second adjusting unit 120 further includes a third guide bar 123, and the third guide bar 123 is symmetrically disposed at both sides of the second driving member 122. One end of the third guide rod 123 is movably connected with the first moving block 111, and the other end is connected with the second moving block 121. The third guide rod 123 moves relative to the first moving block 111 following the movement of the second driving member 122. Further, the third guide bar 123 is movably coupled to the first moving block 111 through a third positioning member 1114 provided to the first moving block 111. The third positioning member 1114 serves to assist in guiding the second positioning member 1113. In this embodiment, the third positioning member 1114 is a through hole provided on the first motion block 111.

The mounting assembly 200 is removably coupled to the adjustment assembly 100. In the present embodiment, the mounting assembly 200 is detachably connected to the second adjustment unit 120, and in particular, the mounting assembly 200 is detachably connected to the second moving block 121. In the actual detection process, in order to ensure that the irradiation system 1 has minimal harm to the operator of the beam detection device 10, the installation assembly 200 and the detection element 300 need to be assembled in a room (generally a preparation room) far away from the beam outlet 37, then the installation assembly 200 is directly installed to the adjustment assembly 100, and the positions of the installation assembly 200 and the detection element 300 are integrally adjusted in the irradiation room where the beam outlet 37 is located, so that the adjustment speed is high, the time is short, the exposure dose of the operator at the beam outlet is reduced, and the radiation influence to the operator can be reduced to the greatest extent.

The mounting assembly 200 includes a bracket 210 and a mounting seat 220 provided on the bracket 210. The bracket 210 is provided with a first connector 211, and the second adjusting unit 120 further includes a second connector 124 for connecting the first connector 211, and the first connector 211 and the second connector 124 are detachably connected. As an alternative embodiment, the first connector 211 and the second connector 124 may be connected by a snap-fit manner. The second moving block 121 is coupled or formed with a second coupling member 124, and the mounting assembly 200 is detachably coupled with the second moving block 121 through the second coupling member 124. Further, the second connecting members 124 are symmetrically disposed at two ends of the second moving block 121, and the first connecting members 211 are connected to corresponding positions of the second connecting members 124.

The second adjustment unit 120 further includes a locking member 125, the locking member 125 locking the mounting assembly 200 and the adjustment assembly 100. The locking member 125 locks the position of the mounting assembly 200 relative to the second adjustment assembly 100. Further, the locking member 125 is coupled to the second moving block 121 or the second link 124, and the locking member 125 locks the mounting assembly 200 by locking the position of the first link 211 with respect to the second moving block 121 or the second link 124. As a preferred embodiment, the surface of the second connecting member 124 is provided with threads, the locking member 125 is a threaded cap, and the internal threads of the locking member 125 are threadedly mated with the surface of the second connecting member 124.

The support 210 is at least partially disposed around the beam outlet 37. In the preparation room, the sensing element 300 may be installed at a middle portion of the rack 210. The middle portion may be defined as the center (which may be the centroid) of the stent 210 and the surrounding area that is 10% -40% of the volume of the area enclosed by the stent 210. The support 210 itself may be symmetrically shaped so that an operator can easily confirm the center of the support 210 and mount the sensing element 300 near the center, and when the mounting assembly 200 is mounted to the adjustment assembly 100, the sensing element 300 is already located at a substantially target position (which may be the center of the beam outlet 37) where sensing can be performed, which effectively reduces the number of positional adjustments and time of the sensing element 300.

The bracket 210 includes at least a first bracket 212 connected to one of the first and second adjusting units 110 and 120 and a second bracket 213 provided with a mounting seat 220. Further, the first frame 212 is provided with a first connecting member 211. The first frame 212 may be the same as or different from the second frame 213. In this embodiment, the first frame 212 and the second frame 213 are symmetrically disposed, the first frame 212 and the second frame 213 are respectively provided with an installation seat 220, and the first connecting piece 211 is provided with two connection pieces and is respectively disposed on two sides of the first frame 212.

The mounting base 220 is used for mounting the sensing element 300, and the mounting base 220 directly or indirectly mounts the sensing element 300 at the middle portion of the bracket 210. The mounting base 220 includes at least one mounting portion 221, and the mounting portion 221 is used for mounting the detecting element 300. Further, in the present embodiment, the mounting portion 221 includes a plurality of mounting holes disposed on the mounting base 220, and different mounting holes may have different sizes and shapes for connecting different mounting pins 222 or detecting elements 300. The mounting pin 222 is used to indirectly connect the detecting element 300 and the mounting base 220, and the detecting element 300 is a Boner ball or foil (not shown) as shown in fig. 3 and 4, etc., and the mounting base 220 needs to be connected through the mounting pin 222. In other embodiments, the mounting block 220 may be removably coupled to the bracket 210, and the mounting block 220 may include a plurality of differently shaped blocks to accommodate different test elements 300.

Fig. 6 shows another embodiment of the beam detection apparatus 10 of the present application, and the same reference numerals are used for the same components as those of the previous embodiment, and no further description is given here. The detection element 300 'is an ionization chamber and may be directly connected to the corresponding mounting portion 221' on the holder 210.

In other embodiments, the adjustment assembly 100 may also include only one of the first adjustment unit 110 or the second adjustment unit 120, in which case the adjustment assembly 100 may only provide positional adjustment in one direction, and adjustment of the detection element 300 in other directions may be accomplished when mounted to the mounting assembly 200. The mounting assembly 200 may include a preliminary calibration structure to which the target position is calculated to correspond, and the adjustment of the calibration structure or the relative position between the mounting assembly 200 and the target position is only required when the mounting assembly 200 is coupled to the adjustment assembly 100.

The beam detection device of the embodiment can adjust the position of the detection element along a plurality of directions, and has the advantages of high adjustment speed, less adjustment times and short time; the adjusting component comprises a plurality of positioning and guiding structures, so that the accuracy and stability of the position adjustment of the adjusting element are improved; through setting up detachable installation component, can realize installation component pre-adjustment and the separation of adjusting component secondary adjustment, effectively reduce detection element's position adjustment number of times and time, reduce the exposure dose of operating personnel at the beam outlet, the radiation influence that the at utmost reduces operating personnel and receives.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.

Claims (11)

1. A beam detection apparatus, comprising:

an adjustment assembly comprising a support unit fixed at the beam outlet, and further comprising at least one of a first adjustment unit, a second adjustment unit, at least one of the first adjustment unit, the second adjustment unit being connected to the support unit;

the installation assembly is detachably connected with the adjusting assembly;

a detection element fixed to the mounting assembly;

the first adjusting unit and the second adjusting unit are used for adjusting the position of the detecting element along different directions.

2. The beam detection apparatus according to claim 1, wherein the first adjusting unit is connected to the mounting assembly, and the first adjusting unit is configured to drive the mounting assembly to move in a first direction relative to the supporting unit.

3. The beam detecting apparatus according to claim 2, wherein the support unit is provided with a guide groove extending in a first direction, and the first adjusting unit includes a first moving block fitted in the guide groove and a first driving member driving the first moving block to move along the guide groove, the first moving block being connected to the mounting assembly.

4. The beam detection apparatus according to claim 3, wherein the second adjusting unit is connected to the first moving block.

5. The beam detection apparatus according to claim 1, wherein the mounting assembly is detachably connected to the second adjusting unit, and the second adjusting unit is connected to the first adjusting unit.

6. The beam detection apparatus according to claim 5, wherein the second adjusting unit includes a second moving block and a second driving member for driving the second moving block to move in a second direction with respect to the supporting unit, and the mounting assembly is detachably connected to the second moving block.

7. The beam detection apparatus according to claim 6, wherein the second moving block is connected to the first adjusting unit.

8. The beam detection apparatus according to claim 1, wherein the mounting assembly comprises a bracket coupled to the adjustment assembly and a mount provided on the bracket, the bracket being disposed at least partially around the beam outlet, the mount for mounting the detection element.

9. The beam detector of claim 8, wherein the bracket is provided with a connector that is detachably connected to the adjustment assembly.

10. The beam detection apparatus of claim 8, wherein the mount comprises at least one mounting portion for mounting a detection element.

11. The beam detector of claim 1, further comprising a locking member for locking the mounting assembly and the adjustment assembly.