A solid target device for accelerator isotope production and method of operation

Abstract

The application discloses a solid target device for accelerator isotope production and an operation method, and the solid target device at least comprises a target body positioning mechanism, a target body mechanism, a target body sliding-out mechanism, a target body pushing mechanism, a target body clamping mechanism and a shielding tank mechanism; the target body positioning mechanism is fixedly connected with the shielding tank mechanism through the target body sliding-out mechanism; the target body positioning mechanism comprises a vacuum isolation film fixing device, a target body fixing device and a helium gas flow distributor; the target body mechanism comprises at least one target body and a target body dovetail slide for fixing the target body, one side of the target body fixing device is fixedly connected with the target body dovetail slide, and the opposite side of the target body fixing device is fixedly connected with the target body sliding-out mechanism; the target body pushing mechanism comprises a target body pushing base, a moving sliding block and a target pushing plate; and the target body clamping mechanism comprises a target body pushing seat, a target pushing plate fixed to the outside of the target body pushing seat, a pushing cylinder and a sliding block. The application can effectively improve isotope production yield, is fully automatically controlled, is simple to operate and is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solid target device, and particularly relates to a solid target device for accelerator isotope production and a running method. BACKGROUND

[0002] The production of radioisotopes mainly depends on an accelerator for generating high-speed particles and a target device, the target device is loaded with a target material, and is mainly used for receiving a particle beam generated by the accelerator to generate a required radioisotope through a nuclear reaction.

[0003] Currently, the commonly used diagnostic radioisotopes mainly include 18 F and some short half-life nuclides, and there is great limitation in the face of long biological half-life precursor labeling, so the current short half-life nuclides cannot meet the realization of the integration of diagnosis and treatment, and it is necessary to produce radioisotopes with longer half-life to match. Moreover, the production demand for therapeutic nuclides is imminent.

[0004] The existing solid target device has the defects of complex structure, inconvenience in disassembly and assembly, and inability to continuously and large-scale produce. SUMMARY

[0005] In order to solve the above problems, the present application provides a solid target device for accelerator isotope production and a running method, which solves the problems of the existing solid target device, such as complex structure, inconvenience in disassembly and assembly, and inability to continuously and large-scale produce.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] A solid target device for accelerator isotope production, the solid target device at least comprises a target body positioning mechanism, a target body mechanism, a target body sliding-out mechanism, a target body pushing mechanism, a target body clamping mechanism and a shielding tank mechanism; the target body positioning mechanism is fixedly connected with the shielding tank mechanism through the target body sliding-out mechanism; wherein,

[0008] The target body positioning mechanism comprises a vacuum isolation film fixing device, a target body fixing device, and a helium flow distributor clamped and fixed between the vacuum isolation film fixing device and the target body fixing device,

[0009] The target body mechanism comprises at least one target body, a target body dovetail slide way for fixing the at least one target body, one side of the target body fixing device is fixedly connected with the target body dovetail slide way, and the other side of the target body fixing device is fixedly connected with the target body slide way;

[0010] The target body pushing mechanism comprises a target body pushing base, a moving sliding block arranged on the target body pushing base, and a target pushing plate fixed on the moving sliding block, the target pushing plate is used for pushing the at least one target body to move towards the target body fixing device.

[0011] The target body clamping mechanism comprises a target body push base, a target body push plate fixed outside the target body push base, and a push cylinder and a sliding block for fixing the target body push plate.

[0012] In one embodiment of the present application, two sides of the helium flow distributor are respectively provided with vacuum isolation membranes, and the target body fixing device, the helium flow distributor, the vacuum isolation membrane fixing device and the two vacuum isolation membranes are fixed as a whole through a plurality of fixing bolts; the vacuum isolation membrane fixing device is provided with a helium inlet, a helium outlet, a first channel and a second channel, the first channel is in communication with the helium inlet and the helium flow distributor respectively, and the second channel is in communication with the helium outlet.

[0013] In one embodiment of the present application, the vacuum isolation membrane fixing device extends a collimating channel, one end of the collimating channel further extends a connecting flange, and the connecting flange is fixedly connected with the beam port.

[0014] In one embodiment of the present application, the target body fixing device is provided with a target body accommodating cavity, the target body sliding-out mechanism comprises a target body sliding channel, the target body accommodating cavity is in communication with the target body sliding channel, the target body sliding channel is arranged obliquely, and the end position of the target body sliding-out mechanism connected with the target body positioning mechanism is higher than the end position of the target body sliding-out mechanism connected with the shielding tank mechanism.

[0015] In one embodiment of the present application, the target body comprises a micro-channel cooling base, target materials, a sealing membrane and a wire coil in sequence, the bottom of the micro-channel cooling base is provided with dovetail grooves, all the target materials are installed through the dovetail grooves and move on the target body dovetail sliding channel, one side of the micro-channel cooling base is further fixed with a water sealing cover plate, and the cover plate is provided with a cooling water inlet jack and a cooling water outlet jack.

[0016] In one embodiment of the present application, the front surface of the target body push base is provided with two waterway plugs, the two waterway plugs are arranged in an up-down manner, and the positions thereof correspond to the cooling water inlet jack and the cooling water outlet jack on the cover plate respectively.

[0017] In one embodiment of the present application, the side surface of the target body push base is further provided with a compressed gas inlet and a compressed gas outlet, the side surface of the push cylinder and the sliding block is further provided with a cooling water inlet and a cooling water outlet, and the target body positioning mechanism is fixedly installed on the push cylinder and the sliding block.

[0018] In one embodiment of the present application, the target body pushing mechanism further comprises a stepping motor fixed on the target body pushing base, a screw rod connected to the stepping motor, and a slide rod arranged on both sides of the screw rod, the screw rod driving the moving slide block to move forward and backward along the slide rod, and the stepping motor controlling the moving distance of the moving slide block each time being the same as the width of a target body.

[0019] In one embodiment of the present application, the target body pushing base is further provided with a first limit switch and a second limit switch, the first limit switch and the second limit switch limiting the moving position of the moving slide block on the slide rod.

[0020] In one embodiment of the present application, the target pushing plate comprises a fixed part and a pushing part, the fixed part being fixed on the upper surface of the moving slide block, the pushing part being arranged perpendicularly to the fixed part, and one end of the pushing part extending out of the edge of the fixed part to form a recess for contacting the target body, the target pushing plate being in contact with the outermost target body in sequence, and the side surface of the target body being accommodated into the recess.

[0021] In one embodiment of the present application, the shielding tank mechanism comprises a shielding cylinder, a shielding cover mounted on the shielding cylinder, an opening cover mechanism, and a dragging mechanism and a lifting mechanism for controlling the movement of the opening cover mechanism, the shielding cover being provided with an insertion opening, the front fork of the opening cover mechanism being inserted into the insertion opening, the dragging mechanism controlling the horizontal movement of the opening cover mechanism, and the lifting mechanism controlling the vertical movement of the opening cover mechanism.

[0022] In one embodiment of the present application, the shielding tank mechanism further comprises a shielding cylinder positioning disc and a support structure, the shielding cylinder being arranged on the shielding cylinder positioning disc, and the shielding cylinder positioning disc being fixed on the support structure.

[0023] The present application further provides a running method of the solid target device for isotope production using the accelerator, comprising the following steps:

[0024] The stepping motor is controlled to move the moving slide block forward, the target pushing plate pushes the target body located at the front of the target body dovetail slide into the target body fixing device, the air cylinder and the slide block are driven to work, the target pushing plate drives the target pushing seat to move forward, the waterway plug on the target pushing seat is respectively inserted into and fixed in the cooling water inlet plug hole and the cooling water outlet plug hole on the target body;

[0025] After the shooting is completed, the air cylinder and the slide block are started again, the target pushing plate drags the target pushing seat to move backward, the waterway plug is disconnected from the cooling water inlet plug hole and the cooling water outlet plug hole, the stepping motor continues to control the moving slide block to move forward, the next target body is sequentially pushed into the target body fixing device, and the target body irradiated in the target body fixing device is slid into the shielding cylinder of the shielding tank mechanism through the target body slide.

[0026] In one embodiment of the present application, before the beam irradiates the target body, the shielding tank mechanism is started, the dragging mechanism moves forward, the uncapping mechanism is inserted into the insertion port of the shielding cover, the lifting mechanism rises to drive the uncapping mechanism to open the shielding cover, the dragging mechanism moves backward, the uncapping mechanism moves the shielding cover backward, and the uncapping of the shielding cylinder body is completed.

[0027] After the irradiated target body slides into the shielding cylinder body, the shielding tank mechanism is started again, the dragging mechanism moves forward, the shielding cover is located above the shielding cylinder body, the lifting mechanism descends, the uncapping mechanism drives the shielding cover to be clamped on the shielding cylinder body, the dragging mechanism moves backward, the uncapping mechanism is separated from the insertion port of the shielding cover, and the capping of the shielding cylinder body is completed.

[0028] The present application has the following beneficial effects:

[0029] The improved accelerator solid target device for isotope production solves the problems of complex structure, inconvenient disassembly and assembly, and inability to continuously and large-scale produce of the existing solid target device. The solid target device for isotope production and the operation method realize the small and beautiful appearance of the equipment, the stable structure operation, and the effective improvement of the isotope production yield. The whole process is automatically controlled, the operation is simple, the maintenance is convenient, the uncapping and capping of the shielding cylinder are remotely controlled, the operation is convenient, the mechanism is simple, and the operator is prevented from being harmed by radiation. A plurality of target bodies can be continuously irradiated to produce different radionuclides in one experiment. BRIEF DESCRIPTION OF DRAWINGS

[0030] Fig. 1 It is a structural schematic diagram of the solid target device of the present application.

[0031] Fig. 2 It is a structural schematic diagram of the target device of the present application.

[0032] Fig. 3 It is a structural schematic diagram of the target body of the present application.

[0033] Fig. 4 It is a structural schematic diagram of the shielding tank mechanism of the present application.

[0034] The drawings show that: 100-target positioning mechanism; 200-target mechanism; 300-target sliding-out mechanism; 400-target pushing mechanism; 500-target clamping mechanism; 600-shielding tank mechanism.

[0035] 1-connection flange; 2-collimating channel; 3-helium outlet; 4-helium inlet; 5-vacuum isolation film fixing device; 6, 61-vacuum isolation film; 7-helium flow distributor; 8-target body dovetail slide; 9-target body fixing device; 10-target body slide; 11, 32, 33, 37, 38, 39-target body; 12-target body push base; 13-target body push plate; 14-sliding block; 15-compressed gas inlet; 16-compressed gas outlet; 17-cooling water inlet; 18-cooling water outlet; 19, 20, 21, 22-fixing bolt; 23-target body push base; 24-stepping motor; 25-push target plate; 26-coupling; 27-sliding rod; 28-screw rod; 29-moving sliding block; 30-first limit switch; 31-second limit switch; 331-micro-channel cooling base; 34-target material; 35-sealing film; 36-coil; 40-water sealing cover plate; 41-cooling water inlet jack; 42-cooling water outlet jack; 43-supporting structure; 44-shielding cylinder positioning disc; 45-shielding cylinder body; 46-shielding cover; 47-cover opening mechanism; 48-dragging mechanism; 49-lifting mechanism; 50-translation air cylinder. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference labels are used throughout the drawings to represent the same or similar elements or elements having the same or similar functions. The terms "first", "second", "third", etc. (if present) in the description and claims of the present application and the accompanying drawings are used to distinguish similar objects, and are not necessarily used to describe a particular order or sequence. It should be understood that the objects thus described can be interchanged under appropriate circumstances. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. The direction terms mentioned in the present application, such as: up, down, left, right, front, back, inner, outer, side, etc. are only the direction of the drawings. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application. In addition, the present application repeatedly refers to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the application of other processes and / or the use of other materials.

[0038] As shown in Figs. 1 to 4 The present application provides a solid target device for accelerator isotope production, which at least includes a target positioning mechanism 100, a target mechanism 200, a target sliding-out mechanism 300, a target pushing mechanism 400, a target clamping mechanism 500, and a shielding tank mechanism 600. The target positioning mechanism 100 is fixedly connected with the shielding tank mechanism 600 through the target sliding-out mechanism 300.

[0039] Specifically, the target positioning mechanism 100 includes a vacuum isolation film fixing device 5, a target fixing device 9, and a helium flow distributor 7 clamped and fixed between the vacuum isolation film fixing device 5 and the target fixing device 9. The target positioning mechanism 100 plays a positioning role for the target alignment beam.

[0040] The target sliding-out mechanism 300 slides the target into the shielding tank mechanism from the target position after completing the target irradiation.

[0041] The target pushing mechanism 400 can load multiple solid targets at a time to meet the needs of continuous irradiation for isotope production.

[0042] The target clamping mechanism 500 is used to tightly connect the target with the beam port. The mechanism clamps the target with the cooling water inlet and outlet plug at the same time, and inserts the water-cooled plug into the back heat exchanger of the target.

[0043] The shielding tank mechanism 600 can automatically open or close the cover. The sealing cover of the shielding tank mechanism is automatically opened remotely before the target irradiation, and is automatically closed remotely after the target slides into the shielding tank mechanism after irradiation.

[0044] Further, the two sides of the helium flow distributor 7 are respectively provided with vacuum isolation membranes 6, 61, and the double-layer vacuum isolation membranes 6, 61 are used for sealing the accelerator vacuum cavity, and the double-layer design enhances the heat dissipation of the membrane and is beneficial to bearing a larger beam current.

[0045] The target body fixing device 9, the helium flow distributor 7, the vacuum isolation membrane fixing device 5, and the two vacuum isolation membranes 6, 61 are fixed as a whole through a plurality of fixing bolts 19, 20, 21, 22. Preferably, they are fixed through four fixing bolts, and the four fixing bolts are respectively located at the four corners.

[0046] The vacuum isolation membrane fixing device 5 is provided with a helium inlet 4, a helium outlet 3, a first channel, and a second channel (not shown in the figure). The first channel respectively communicates with the helium inlet 4 and the helium flow distributor 7, and the second channel communicates with the helium outlet 3.

[0047] In addition, the vacuum isolation membrane fixing device 5 extends a collimating channel 2, and the collimating channel 2 further extends a connecting flange 1 at one end, and the connecting flange 1 is fixedly connected with the beam port.

[0048] Specifically, the connecting flange 1 is tightly connected with the beam port, the collimating channel 2 connects the connecting flange 1 with the vacuum isolation membrane fixing device 5, the helium flow distributor 7 is in the middle of the two vacuum isolation membranes 6, 61, the helium enters from the helium inlet 4, passes through the vacuum isolation membrane fixing device 5, enters the helium flow distributor 7, and is blown to the two vacuum isolation membranes 6, 61, thereby cooling the vacuum isolation membranes 6, 61, and finally the helium flows to the vacuum isolation membrane fixing device 5 through the helium flow distributor 7, and is finally discharged through the helium outlet 3.

[0049] Further, the target body fixing device 9 is provided with a target body accommodating cavity, the target body sliding-out mechanism 300 includes a target body slide 10, the target body accommodating cavity communicates with the target body slide 10, the target body slide 10 is arranged obliquely, and the end position of the target body sliding-out mechanism 300 connected with the target body positioning mechanism 100 is higher than the end position of the shielding tank mechanism 600.

[0050] The target body mechanism 200 includes at least one target body 11 and a target body dovetail slide 8 for fixing the at least one target body 11. One side of the target body fixing device 9 is fixedly connected with the target body dovetail slide 8, and the other side of the target body fixing device 9 is fixedly connected with the target body sliding-out mechanism 300.

[0051] Preferably, the target body mechanism includes six target bodies 11, 32, 33, 37, 38, 39, and the six target bodies 11, 32, 33, 37, 38, 39 are arranged on the target body dovetail slide 8 in sequence.

[0052] Specifically, each target body 11, 32, 33, 37, 38, 39 comprises a micro-channel cooling base 331, a target material 34, a sealing film 35 and a wire coil 36 combined in sequence, the bottom of the micro-channel cooling base 331 is provided with a dovetail groove, all the target bodies are installed through the dovetail groove and move on the target body dovetail slide 8, and one side of the micro-channel cooling base 331 is further fixed with a water sealing cover plate 40, and the water sealing cover plate 40 is further provided with a cooling water inlet jack 41 and a cooling water outlet jack 42.

[0053] Further, the front side of the micro-channel cooling base 331 is provided with a target material groove (not shown in the figure), and the back side is fixedly connected with the water sealing cover plate 40. The assembly method of each target body 11, 32, 33, 37, 38, 39 is as follows: the target material 34 is placed in the target material groove of the micro-channel cooling base 331, the sealing film 35 is placed on the target material 34, and the wire coil 36 is connected and fixed with the micro-channel cooling base 331, so as to fix the sealing film 35 and the target material 34, and the water sealing cover plate 40 is also fixedly installed on the back side of the micro-channel cooling base 331. After the assembly of a single target body is completed, since the bottom of the micro-channel cooling base 331 is provided with the dovetail groove, the assembled target bodies are pushed in sequence on the target body dovetail slide 8, and the installation of the target body mechanism 200 is completed.

[0054] The main feature of the target body 11, 32, 33, 37, 38, 39 of the present application is that the base is combined with the micro-channel heat exchanger as an integrated structure to form a micro-channel cooling base 331, and the powerful heat dissipation capacity of the micro-channel can enable the target material to bear a larger beam current intensity, so as to improve the yield of the target radionuclide. Meanwhile, the sealing film 35 can be used as a film for sealing the radionuclide and can also be used as an energy reducer by adjusting the thickness, so that the solid target can produce the target radionuclide at a more suitable beam energy.

[0055] Preferably, the entire micro-channel cooling base 331 can adopt graphite-based or ceramic-based materials, so that the base can be reused after being placed for a period of time after the target is completed, and the amount of radioactive solid waste can be effectively reduced.

[0056] The target body pushing mechanism 400 comprises a target body pushing base 23, a moving slider 29 arranged on the target body pushing base 23, and a target pushing plate 25 fixed on the moving slider 29, and the target pushing plate 25 is used for pushing the target body mechanism to move towards the target body fixing device 9.

[0057] The target pushing plate 25 comprises a fixed part and a pushing part, the fixed part is fixed on the upper surface of the moving slider 29, the pushing part is arranged perpendicularly to the fixed part, and one end of the pushing part extends out of the edge of the fixed part to form a recess in contact with the target body 11, 32, 33, 37, 38, 39, the target pushing plate 25 is attached to the outermost target body arranged in sequence, and the side surface of the target body is accommodated in the recess.

[0058] Further, the target body pushing mechanism 400 further comprises a stepping motor 24 fixed on the target body pushing base 23, a screw rod 28 connected with the stepping motor 24, and slide rods 27 arranged on both sides of the screw rod 28. The screw rod 28 drives the moving slide block 29 to move back and forth along the direction of the slide rods 27. The stepping motor 24 controls the moving distance of the moving slide block 29 each time, which is the same as the width of one target body 11, 32, 33, 37, 38, 39.

[0059] Further, the target body pushing mechanism 400 further comprises a coupling 26 connecting the screw rod 28 and the stepping motor 24. When the stepping motor 24 rotates, the screw rod 28 is driven to rotate.

[0060] In addition, in order to prevent the target body pushing mechanism 400 from being overloaded, the first limit switch 30 and the second limit switch 31 are arranged on the target body pushing base 23 to limit the moving position of the moving slide block 29 on the slide rods 27.

[0061] The target body clamping mechanism 500 comprises a target body pushing seat 12, a target body pushing plate 13 fixed on the outer side of the target body pushing seat 12, and a pushing cylinder and slide block 14 for fixing the target body pushing plate 13.

[0062] Further, two waterway plugs are arranged on the front surface of the target body pushing seat 12, which are arranged in up-down direction and correspond to the cooling water inlet plug hole 41 and the cooling water outlet plug hole 42 on the surface of the water sealing cover plate 40. During operation, the waterway plugs of the target body pushing seat 12 are inserted into the cooling water inlet plug hole 41 and the cooling water outlet plug hole 42 of the water sealing cover plate 40 on the back of the target body, which can also play a role of fixation.

[0063] Preferably, the side surface of the target body pushing seat 12 is further provided with a compressed gas inlet 15 and a compressed gas outlet 16, the side surface of the pushing cylinder and slide block 14 is further provided with a cooling water inlet 17 and a cooling water outlet 18, and the target body positioning mechanism is fixed on the pushing cylinder and slide block 14.

[0064] The shielding can mechanism 600 comprises a shielding cylinder 45, a shielding cover 46 fixed on the shielding cylinder 45, an opening cover mechanism 47, a dragging mechanism 48 and a lifting mechanism 49 for controlling the movement of the opening cover mechanism 47. The shielding cover 46 is provided with an insertion opening, the front fork of the opening cover mechanism 47 is inserted into the insertion opening, the dragging mechanism 48 controls the horizontal movement of the opening cover mechanism 47, and the lifting mechanism 49 controls the vertical movement of the opening cover mechanism 47.

[0065] Preferably, the opening cover mechanism 47 is fixed on the dragging mechanism 48.

[0066] Specifically, the shielding can mechanism 600 further comprises a shielding cylinder positioning disc 44 and a support structure 43, the shielding cylinder body 45 is arranged on the shielding cylinder positioning disc 44, and the shielding cylinder positioning disc 44 is fixed on the support structure.

[0067] Preferably, the shielding cylinder positioning disc 44 has an extended plane, and the dragging mechanism 48 and the lifting mechanism 49 are arranged on the extended plane.

[0068] Further, the dragging mechanism 48 further comprises a translation air cylinder 50, and the pushing or retraction of the translation air cylinder 50 drives the horizontal movement of the cover opening mechanism 47.

[0069] The solid target device provided by the application has stable structure and operation, can effectively improve the isotope production yield, is fully automatically controlled, easy to operate and convenient to maintain.

[0070] The application further provides a running method of the solid target device for isotope production of the accelerator.

[0071] The micro-channel cooling base 33, the target material 34, the sealing film 35, the wire coil 36 and the watertight cover plate 40 are assembled to form the target body 11, 32, 33, 37, 38 and 39.

[0072] After the target body 11, 32, 33, 37, 38 and 39 are assembled, the dovetail groove of the target body 11, 32, 33, 37, 38 and 39 is aligned with the target body dovetail slide rod 8, and all the assembled target bodies are mounted on the target body dovetail slide rod 8, wherein the last target body 32 is attached to the target pushing plate 25 fixed on the moving slider 29.

[0073] The step motor 24 is controlled to work, the step motor 24 controls the moving slider 29 to move forward by a distance of one target body, so that the target pushing plate 25 pushes the target body 11 located at the front of the target body dovetail slide 8 into the target body accommodating cavity of the target body fixing device 9.

[0074] The pushing air cylinder and slider 14 are controlled to work, since the target body pushing seat 12 and the target body pushing plate 13 are fixed, the target body pushing plate 13 is fixed on the pushing air cylinder and slider 14, the target body pushing plate 13 pushes the target body pushing seat 12 to move forward, and the upper and lower waterway plugs on the target body pushing seat 12 are respectively inserted into and fixed in the cooling water inlet plug hole 41 and the cooling water outlet plug hole 42 on the back of the watertight cover plate 40 of the target body 11.

[0075] After the shooting is completed, the cooling water stops supplying, the pushing cylinder and the sliding block 14 are started again, the target body pushing plate 13 drags the target body pushing seat 12 to move backward, and the waterway plug of the target body pushing seat 12 is disconnected with the cooling water inlet plug hole 41 and the cooling water outlet plug hole 42 of the target body 11.

[0076] The stepping motor 24 is controlled again, the stepping motor 24 continues to control the moving sliding block 29 to move forward by a distance of a target width, and the next target body 39 is pushed into the target body accommodating cavity of the target body fixing device 9 in turn, and at this time, the target body 11 irradiated in the target body fixing device 9 slides into the shielding barrel body 45 of the shielding can mechanism through the target body slide 10.

[0077] Through the above method, the target body can be continuously irradiated, and different radionuclides can be produced in one group of experiments by replacing different target materials and energy-reducing sheets (i.e. the sealing film 35).

[0078] Further, before the beam irradiates the target body 11, at this time, the shielding barrel body 45 is in the closed state, and the shielding cover 46 is placed on the shielding barrel body 45.

[0079] The shielding can mechanism is started, the dragging mechanism 48 is moved forward under the pushing of the translation cylinder 50, and the front fork of the cover opening mechanism 47 is inserted into the insertion inlet of the shielding cover 46, so that the shielding cover 46 is fixed.

[0080] The lifting mechanism 49 is pushed upward by the cylinder to drive the cover opening mechanism 47 to rise, so that the shielding cover 46 is opened, and at this time, the shielding cover 46 is located above the shielding barrel body 45.

[0081] The dragging mechanism 48 is moved backward under the influence of the retraction of the translation cylinder 50, and the cover opening mechanism 47 moves the shielding cover 46 backward, and at this time, the shielding barrel body 45 is completely in the open state, and the opening of the shielding barrel body is completed.

[0082] After the irradiated target body 11 slides into the shielding barrel body 45 through the target body slide 10, the shielding can mechanism is started again, the dragging mechanism 48 is moved forward under the pushing of the translation cylinder 50, and at this time, the shielding cover 46 is located above the shielding barrel body 45.

[0083] The lifting mechanism 49 is pulled downward by the cylinder to drive the cover opening mechanism 47 to descend, and then the shielding cover 46 is clamped on the shielding barrel body 45.

[0084] The dragging mechanism 48 is moved backward under the influence of the retraction of the translation cylinder 50, and the front fork of the cover opening mechanism 47 is separated from the insertion inlet of the shielding cover 46 and returns to the initial position, and at this time, the shielding barrel body 45 is completely in the shielding state, and the closing of the shielding barrel body 45 is completed.

[0085] Through the method, the cover opening and closing of the shielding cylinder can be remotely controlled, operation is convenient, the mechanism is simple, and the operator is prevented from being harmed by radiation.

[0086] It should be understood that, although the steps of the method are shown sequentially, these steps are not necessarily performed sequentially in the order indicated. Unless explicitly stated otherwise herein, the performance of the steps is not strictly limited in sequence, and the steps can be performed in other orders.

[0087] The solid target device for isotope production and the operating method of the application realize the small and beautiful nature of the device, the stable structure and operation, the effective improvement of the isotope production yield, the full-automatic control, the simple operation, the convenient maintenance, the cover opening and closing of the shielding cylinder, the convenient operation, the simple mechanism, and the prevention of the operator from being harmed by radiation. A plurality of target bodies can be continuously irradiated, and different radionuclides can be produced in one set of experiments.

[0088] The technical features of the above embodiments can be combined arbitrarily, and in order to make the description concise, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered that it is within the scope of the present application.

[0089] The above embodiments only express several implementation manners of the application, the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made, which are within the scope of the application. Therefore, the patent protection scope of the application should be subject to the appended claims.

Claims

1. A solid target device for accelerator isotope production, characterized by, The solid target device at least includes a target body positioning mechanism (100), a target body mechanism (200), a target body sliding-out mechanism (300), a target body pushing mechanism (400), a target body clamping mechanism (500), and a shielding tank mechanism (600); the target body positioning mechanism (100) is fixedly connected with the shielding tank mechanism (600) through the target body sliding-out mechanism (300); wherein, The target body positioning mechanism (100) includes a vacuum isolation film fixing device (5), a target body fixing device (9), and a helium flow distributor (7) clamped and fixed between the vacuum isolation film fixing device (5) and the target body fixing device (9); The target body mechanism (200) includes at least one target body (11), a target body dovetail slide (8) for fixing the at least one target body (11), one side of the target body fixing device (9) is fixedly connected with the target body dovetail slide (8), and the opposite side of the target body fixing device (9) is fixedly connected with the target body sliding-out mechanism (300); The target body pushing mechanism (400) includes a target body pushing base (23), a moving slider (29) arranged on the target body pushing base (23), and a target pushing plate (25) fixed on the moving slider (29), the target pushing plate (25) is used for pushing the at least one target body (11) to move towards the target body fixing device (9); The target body clamping mechanism (500) includes a target body pushing seat (12), a target body pushing plate (13) fixed outside the target body pushing seat (12), and a pushing cylinder and slider (14) for fixing the target body pushing plate (13); Two sides of the helium flow distributor (7) are respectively provided with vacuum isolation films (6, 61), the target body fixing device (9), the helium flow distributor (7), the vacuum isolation film fixing device (5), and the two vacuum isolation films (6, 61) are fixed as a whole through a plurality of fixing bolts (19, 20, 21, 22); the vacuum isolation film fixing device (5) is provided with a helium inlet (4), a helium outlet (3), a first channel, and a second channel, the first channel is in communication with the helium inlet (4) and the helium flow distributor (7) respectively, and the second channel is in communication with the helium outlet (3); The target body pushing mechanism (400) further includes a stepping motor (24) fixed on the target body pushing base (23), a lead screw (28) connected with the stepping motor (24), and a slide rod (27) arranged on both sides of the lead screw (28), the lead screw (28) drives the moving slider (29) to move back and forth along the direction of the slide rod (27), and the stepping motor (24) controls the moving distance of the moving slider (29) each time to be the same as the width of one target body.

2. The solid target device of claim 1, wherein, The vacuum isolation film fixing device (5) extends a collimating channel (2), one end of the collimating channel (2) further extends a connecting flange (1), and the connecting flange (1) is fixedly connected with a beam port.

3. The solid target device of claim 1, wherein, The target body fixing device (9) is provided with a target body accommodating cavity, the target body sliding-out mechanism (300) comprises a target body sliding channel (10), the target body accommodating cavity is communicated with the target body sliding channel (10), the target body sliding channel (10) is arranged obliquely, and the end position of the target body sliding-out mechanism (300) connected with the target body positioning mechanism (100) is higher than the end position of the end position connected with the shielding tank mechanism (600).

4. The solid target device of claim 1, wherein, The target body comprises a micro-channel cooling base (331), a target material (34), a sealing film (35) and a wire coil (36) arranged in sequence, the bottom of the micro-channel cooling base (331) is provided with a dovetail groove, all the target bodies are installed through the dovetail groove and move on the target body dovetail sliding channel (8), and one side of the micro-channel cooling base (331) is further fixed with a water sealing cover plate (40), the surface of the water sealing cover plate (40) is provided with a cooling water inlet jack (41) and a cooling water outlet jack (42).

5. The solid target device of claim 4, wherein, Two waterway plugs are arranged on the front surface of the target body pushing seat (12), the two waterway plugs are arranged in an up-down mode, and the positions of the two waterway plugs correspond to the cooling water inlet jack (41) and the cooling water outlet jack (42) on the surface of the water sealing cover plate (40) respectively.

6. The solid target device of claim 4, wherein, The side surface of the target body pushing seat (12) is further provided with a compressed gas inlet (15) and a compressed gas outlet (16), the side surface of the pushing air cylinder and sliding block (14) is further provided with a cooling water inlet (17) and a cooling water outlet (18), and the target body positioning mechanism (100) is installed and fixed on the pushing air cylinder and sliding block (14).

7. The solid target device of claim 1, wherein, The target body pushing base (23) is further provided with a first limit switch (30) and a second limit switch (31), the first limit switch (30) and the second limit switch (31) limit the moving position of the moving sliding block (29) on the sliding rod (27).

8. The solid target device of claim 1, wherein, The target pushing plate (25) comprises a fixed part and a pushing part, the fixed part is fixed on the upper surface of the moving sliding block (29), the pushing part is arranged perpendicularly to the fixed part, one end of the pushing part extends out of the edge of the fixed part to form a recess part in contact with the target body (11), the target pushing plate is attached to the outermost target body arranged in sequence, and the side surface of the target body is accommodated into the recess part.

9. The solid target device of claim 7, wherein, The shielding tank mechanism (600) comprises a shielding cylinder body (45), a shielding cover (46) installed on the shielding cylinder body (45), an opening cover mechanism (47), a dragging mechanism (48) and a lifting mechanism (49) for controlling the movement of the opening cover mechanism (47); the shielding cover (46) is provided with a plug-in inlet, the front fork of the opening cover mechanism (47) is plugged into the plug-in inlet, the dragging mechanism (48) controls the horizontal movement of the opening cover mechanism (47), and the lifting mechanism (49) controls the vertical movement of the opening cover mechanism (47).

10. The solid target device of claim 9, wherein, The shielding tank mechanism (600) further comprises a shielding cylinder positioning disc (44) and a support structure (43), the shielding cylinder body (45) is arranged on the shielding cylinder positioning disc (44), and the shielding cylinder positioning disc (44) is fixed on the support structure (43).

11. A method of operating a solid target device for isotope production with an accelerator as claimed in claim 9, characterized in that The method comprises the following steps: The target plate (25) is pushed to move forward by the stepping motor (24) to push the target body located at the front of the target body dovetail slide (8) into the target body fixing device (9), and the air cylinder and the slider (14) are driven to work, the target plate (13) drives the target pushing seat (12) to move forward, and the waterway plug on the target pushing seat (12) is respectively inserted into and fixed on the cooling water inlet and outlet plug holes (41) and (42) of the target body; After the shooting is completed, the air cylinder and the slider (14) are started again, the target plate (13) drags the target pushing seat (12) to move backward, the waterway plug is disconnected from the cooling water inlet and outlet plug holes (41) and (42), the stepping motor continues to control the moving slider (29) to move forward, the next target body is pushed into the target body fixing device (9) in sequence, and the target body irradiated in the target body fixing device (9) is slid into the shielding cylinder body (45) of the shielding tank mechanism (600) through the target body slide (10).

12. The method of operating of claim 11, wherein, Before the target body is irradiated by the beam, the shielding tank mechanism (600) is started, the dragging mechanism moves forward, the cover opening mechanism (47) is inserted into the insertion port of the shielding cover, the lifting mechanism (49) is lifted to drive the cover opening mechanism (47) to open the shielding cover (46), the dragging mechanism (48) moves backward to drive the cover opening mechanism (47) to move the shielding cover (46) backward, and the cover opening of the shielding cylinder body (45) is completed. After the target body is irradiated and slid into the shielding cylinder body, the shielding tank mechanism (600) is started again, the dragging mechanism (48) moves forward, the shielding cover is located above the shielding cylinder body (45), the lifting mechanism (49) is lowered, the cover opening mechanism (47) drives the shielding cover to be clamped on the shielding cylinder body (45), the dragging mechanism (48) moves backward, the cover opening mechanism (47) is separated from the insertion port of the shielding cover, and the cover closing of the shielding cylinder body (45) is completed.

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