Terminal target chamber for material irradiation damage effect experiment

Abstract

The invention discloses a material irradiation damage effect experiment terminal target chamber, and relates to the technical field of material defect characterization, and the technical scheme is characterized in that the material irradiation damage effect experiment terminal target chamber comprises a sample target plate and a target chamber, the sample target plate is connected with the target chamber, the sample target plate comprises a target plate, one end of the target plate far away from the target chamber is detachably connected with a connecting assembly, and the connecting assembly is connected with the target chamber. A plurality of sample grooves are formed in the target plate, internal threads are arranged in the sample grooves, and the sample grooves are in threaded connection with a sample cabin. The device integrates the functions of temperature control, infrared temperature measurement, vacuum maintenance, beam statistics and the like, multiple groups of samples in irradiation environments with different intensities can be experimented at the same time by arranging multiple groups of sample grooves in the target plate, and meanwhile, the device is adjustable, adopts a quick-release design, can quickly replace the samples or the center distance, and can adapt to multiple large scientific devices.

Description

Technical Field

[0001] The present invention relates to the technical field of material defect characterization, and more particularly to a terminal target chamber for a material irradiation damage effect experiment. Background Art

[0002] With the rapid development of fields such as nuclear energy, aerospace, and medicine, the study of the performance of materials in extreme radiation environments has become crucial. As the main experimental device for studying high-energy particle radiation damage, the design of the terminal target chamber of the ion accelerator's radiation effect experiment directly affects the accuracy and efficiency of the experimental data. Under the bombardment of high-energy particles in the ion accelerator, the atoms inside the material will undergo complex displacements and reactions, resulting in a series of radiation damage effects. These damages include the formation of point defects, such as self-interstitial atoms and vacancies, and defect clusters formed by the aggregation of these point defects, such as dislocation loops and microvoids. In addition, the interaction between high-energy particles and material molecules may also lead to the breaking and recombination of chemical bonds inside the material, resulting in radiation chemical reactions, which in turn cause macroscopic changes in the material's properties.

[0003] At present, many target chambers for radiation damage effect experiments have certain limitations in their design. First, traditional irradiation experimental devices generally adopt a fixed sample mounting structure, which means that a single experiment can only test a single type of sample. When multiple sets of comparative experiments need to be carried out, the sample must be replaced through a complex target chamber disassembly and reassembly process, which not only significantly prolongs the experimental cycle, but also may affect the reliability of the experimental data due to the risk of contamination during operation. Second, the ion beam compatibility design of existing experimental target chambers has limitations. It can usually only adapt to ion beam currents within a specific energy range and is difficult to meet the collaborative testing requirements of multi-scale samples. At the same time, traditional target chambers lack the ability to control environmental parameters, making it difficult to simultaneously achieve in-situ characterization under conditions such as temperature and stress during the irradiation process. Third, current research mainly uses irradiation devices for metal samples. Metal samples have high strength and regular shape and can be directly pasted on the mounting structure. However, for molecular crystal material samples, their strength is low, their shape is irregular, and their grain size ranges from micrometers (powder) to millimeters (particles). They are easily damaged during operation and cannot be effectively fixed. In view of this, the inventors propose a terminal target chamber for material radiation damage effect experiments. Summary of the Invention

[0004] The purpose of the present invention is to provide a terminal target chamber for material irradiation damage effect experiment to solve the above problems.

[0005] The above technical purpose of the present invention is achieved through the following technical solutions: a material irradiation damage effect experiment terminal target chamber, including a sample target plate and a target chamber, the sample target plate is connected to the target chamber, the sample target plate includes a target plate, the target plate is detachably connected to a connecting component at one end away from the target chamber, a plurality of sample slots are provided on the target plate, the sample slots are provided with internal threads, and the sample slots are threadedly connected to the sample chamber.

[0006] The present invention is further configured as follows: the sample chamber is externally connected to aluminum foil, and the aluminum foil is fixed using a stainless steel tie.

[0007] The present invention is further configured as follows: the connecting assembly includes a target plate connecting plate, the target chamber connecting plate is provided at one end of the target chamber close to the connecting assembly, and the target plate connecting plate is detachably connected to the target chamber connecting plate.

[0008] The present invention is further configured as follows: the connecting assembly also includes a moving assembly, the moving assembly includes a frame and a bellows, the frame is fixedly connected to the target plate connecting plate, a linear guide rail is symmetrically provided in the frame, the linear guide rail is slidably connected to the moving plate, the moving plate is provided with a connecting piece at one end away from the target plate connecting plate, the connecting piece is detachably connected to a screw nut, the screw nut is threadably connected to a ball screw, the ball screw is rotatably connected to the frame, the connecting piece is fixedly connected to one end of the bellows, the other end of the bellows is fixedly connected to the target plate connecting plate, the connecting piece is fixedly connected to an inner tube in the bellows, the end of the inner tube away from the connecting piece is fixedly connected to an inner tube fixing piece, and the inner tube fixing piece is detachably connected to the target plate.

[0009] The present invention is further configured as follows: the ball screw passes through one end inside the frame and extends outside the frame, and the ball screw is fixedly connected to a handwheel.

[0010] The present invention is further configured as follows: the inner tube is movably connected to an inner plate, and the inner plate is detachably connected to the target plate connecting plate.

[0011] The present invention is further configured as follows: the target plate includes a first target plate, a second target plate and a target plate fixing piece, the target plate fixing piece is detachably connected to the first target plate, the target plate fixing piece is detachably connected to the connecting assembly, the first target plate is detachably connected to the second target plate, and the second target plate is provided with multiple sample slots.

[0012] The present invention is further configured as follows: the connection assembly also includes a heating wire connection and a thermocouple temperature measurement connection, the heating wire connection is connected to an electrically controlled heating wire at one end close to the first target plate, and the electrically controlled heating wire is installed inside the target plate, and the thermocouple temperature measurement connection is connected to a thermocouple wire at one end close to the first target plate, and the thermocouple wire is installed inside the target plate and extends into the sample chamber.

[0013] The present invention is further configured as follows: the connecting assembly further includes a water cooling pipe, the water cooling pipe passes through the inner pipe, and the water cooling pipe is connected to the first target plate, and a water cooling pipeline is provided in the first target plate.

[0014] The present invention is further configured as follows: the number of the water cooling pipes is 2, which are respectively connected to the two ends of the water cooling pipeline.

[0015] In summary, the present invention has the following beneficial effects:

[0016] 1. The experimental terminal of the present invention integrates functions such as temperature control, infrared temperature measurement, vacuum maintenance, and beam statistics. By setting up multiple groups of sample slots on the target plate, experiments can be carried out on multiple groups of samples in different irradiation environments at the same time.

[0017] 2. The experimental terminal of the present invention adopts a quick-release design. Through the sample chamber, samples can be quickly replaced, which greatly shortens the experimental preparation time and improves the continuity and overall efficiency of the experiment. It can also adapt to samples of different sizes and shapes, meeting the needs of radiation damage research of various materials under ion accelerators, and providing convenient conditions for extensive research in the field of materials science. The sample chamber supports the fixation of metal block samples, molecular crystal granular samples, and powdered samples. At the same time, the center distance can be quickly adjusted through the movable components. It is suitable for multiple large scientific facilities, such as the Lanzhou Heavy Ion Accelerator (HIRFL) and the China Spallation Neutron Source (CSNS). It can fully utilize the high-energy particle beam resources of these facilities to achieve more extensive and in-depth radiation damage research. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the terminal target chamber for the material irradiation damage effect experiment in an embodiment of the present invention. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the terminal target chamber for the material radiation damage effect experiment according to the embodiment of the present invention. Figure 2 ;

[0020] Figure 3 This is a schematic diagram of the sample target plate structure in the embodiment of the present invention. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the sample target plate structure in the embodiment of the present invention. Figure 2 ;

[0022] Figure 5 This is a left view of a sample target plate in an embodiment of the present invention;

[0023] Figure 6 AA cross-sectional view of a sample target plate in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the sample target plate structure in the embodiment of the present invention. Figure 3 ;

[0025] Figure 8 This is a schematic diagram of the internal structure of the sample target plate in the embodiment of the present invention. Figure 1 ;

[0026] Figure 9 This is a schematic diagram of the internal structure of the sample target plate in the embodiment of the present invention. Figure 2 .

[0027] In the figure: 1. Sample target plate; 2. Plug-in valve; 3. First bellows; 4. Target chamber; 5. Molecular pump; 6. Plug-in pneumatic Faraday cage; 7. Infrared observation window; 8. Faraday cage beam detection signal output interface; 9. Water pipe interface; 10. First reserved interface; 11. Second reserved interface; 12. Vacuum gauge; 13. Sample chamber; 14. Aluminum foil; 15. Experimental sample; 41. Target chamber connecting plate; 1100. Target plate; 1110. First target plate; 1111. Water cooling pipe; 1120. Second target plate; 1121. Sample tank; 1130. Target Plate fixing part; 1200, connecting assembly; 1201, target plate connecting plate; 1202, thermocouple temperature measurement wiring; 1203, heating wire wiring; 1204, thermocouple wire; 1205, electric control heating wire; 1206, water cooling pipe; 1210, moving assembly; 1211, frame; 1212, linear guide rail; 1213, ball screw; 1214, screw nut; 1215, moving plate; 1216, connecting part; 1217, second bellows; 1218, handwheel; 1219, inner tube; 1220, inner tube fixing part; 1221, inner plate. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example:

[0030] A terminal target chamber for material irradiation damage effect experiment, such as Figure 1 、 Figure 3 、 Figure 4 、 Figure 8 and Figure 9As shown, it includes a sample target plate 1 and a target chamber 4, including the sample target plate 1 connected to the target chamber 4, the sample target plate 1 includes a target plate 1100, and the target plate 1100 is detachably connected to a connecting component 1200 at one end away from the target chamber 4, and a plurality of sample grooves 1121 are provided on the target plate 1100, the number of the sample grooves 1121 is 25, and the diameter is 10 mm. The sample grooves 1121 are provided with internal threads, and the sample grooves 1121 are threadedly connected to the sample cabin 13, which is a detachable cylindrical part and is screwed into the target plate through the internal threads. A concave cavity is provided in the sample cabin 13 for placing samples, and an aluminum foil 14 is connected to the outside of the sample cabin 13 for fixing the experimental sample 15.

[0031] In this embodiment, if Figure 1 ,and Figure 3 As shown, the connecting assembly 1200 includes a target plate connecting plate 1201 , and the target chamber 4 is provided with a target chamber connecting plate 41 at one end close to the connecting assembly 1200 . The target plate connecting plate 1201 is detachably connected to the target chamber connecting plate 41 .

[0032] In this embodiment, if Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the connecting assembly 1200 further includes a moving assembly 1210, which includes a frame 1211 and a second bellows 1217. The frame 1211 is fixedly connected to the target plate connecting plate 1201. A linear guide rail 1212 is symmetrically provided in the frame 1211. The linear guide rail 1212 is slidably connected to a moving plate 1215. The moving plate 1215 is provided with a connecting piece 1216 at one end away from the target plate connecting plate 1201. The connecting piece 1216 is detachably connected to a screw nut 1214. The screw nut 1214 is detachably connected to the screw nut 1214. A ball screw 1213 is threadedly connected to the frame 1211 and is rotatably connected to the frame 1211. A connector 1216 is fixedly connected to one end of a second bellows 1217, the other end of which is fixedly connected to the target plate connecting plate 1201. An inner tube 1219 is fixedly connected to the connector 1216 within the second bellows 1217. The end of the inner tube 1219, away from the connector 1216, is fixedly connected to an inner tube fixing member 1220, which is detachably connected to the target plate 1100. The ball screw 1213 extends from one end inside the frame 1211 to the outside of the frame 1211 and is fixedly connected to a handwheel 1218. The inner tube 1219 is movably connected to an inner plate 1221, which is detachably connected to the target plate connecting plate 1201.

[0033] In this embodiment, the ball screw 1213 can be driven to rotate by rotating the handwheel 1218, and the screw nut 1214, the movable plate 1215, the connector 1216, the inner tube 1219 and the inner tube fixing member 1220 can be driven to move through the threaded connection, and finally the target plate 1100 can be driven to move laterally to achieve manually adjustable center distance. The movable assembly 1210 can be expanded for use in other accelerator devices or target chambers.

[0034] In this embodiment, if Figure 3 and Figure 7 As shown, the target plate 1100 includes a first target plate 1110, a second target plate 1120 and a target plate 1100 fixing part. The target plate 1100 fixing part is detachably connected to the first target plate 1110. The target plate 1100 fixing part is detachably connected to the connecting assembly 1200. The first target plate 1110 is detachably connected to the second target plate 1120. The second target plate 1120 is provided with a plurality of sample slots 1121.

[0035] In this embodiment, if Figure 3 、 Figure 4 Figure 7 、 Figure 8 and Figure 9 As shown, connection assembly 1200 also includes a heating wire connection 1203 and a thermocouple temperature measurement connection 1202. The end of heating wire connection 1203 near first target plate 1110 is connected to an electrically controlled heating wire 1205, which is mounted inside target plate 1100. The end of thermocouple temperature measurement connection 1202 near first target plate 1110 is connected to a thermocouple wire 1204, which is mounted inside target plate 1100 and extends into sample chamber 13. Connection assembly 1200 also includes a water cooling tube 1206, which passes through inner tube 1219 and is connected to first target plate 1110. Water cooling pipe 1111 is provided within first target plate 1110. There are two water cooling tubes 1206, one connecting each end of water cooling pipe 1111.

[0036] like Figure 2 As shown, the terminal target chamber 4 of the material radiation damage effect experiment of the present invention also includes a valve plate valve 2, a first bellows 3, a target chamber 4, a molecular pump 5, an insertable pneumatic Faraday cup 6, an infrared observation window 7, a Faraday cup beam detection electrical signal output interface 8, a water pipe interface 9, a first reserved interface 10, a second reserved interface 11 and a vacuum gauge 12. The functions of each structure of the present invention

[0037] Gate valve:

[0038] As a control component for gases entering and exiting the target chamber, it can precisely open and close channels, effectively controlling the gas environment within the target chamber. During ion irradiation experiments, it prevents external gases from accidentally entering the target chamber and affecting experimental results. It also provides a reliable control method when specific gases need to be introduced or exhausted, ensuring that the experiment proceeds stably within the set gas atmosphere, thus playing a protective role.

[0039] First bellows:

[0040] The bellows primarily serve as a connection and compensation mechanism. Since the equipment may experience slight displacement or vibration during ion irradiation experiments, they absorb these movements and vibrations, maintaining the seal and stability of the connection. Furthermore, they can also accommodate the thermal expansion and contraction caused by temperature fluctuations within the target chamber, preventing damage to the connection or seal failure caused by these temperature fluctuations and ensuring the normal operation of the entire device.

[0041] Target room:

[0042] The core component of the entire ion irradiation experiment, it provides a relatively independent and stable experimental space for ion irradiation. Its internal structure design ensures that the ion beam irradiates the sample target according to the predetermined path and parameters. It also accommodates other related components such as molecular pumps and vacuum gauges, providing them with installation locations and working environments, ensuring the orderly operation of the entire experimental system under vacuum conditions.

[0043] Molecular pump:

[0044] Responsible for efficient vacuum extraction of the target chamber, it can quickly reduce the gas pressure inside the target chamber to the high vacuum state required for the experiment. During the ion irradiation experiment, the vacuum level in the target chamber is continuously maintained, reducing the scattering and interference of gas molecules on the ion beam, improving the purity of the ion beam and irradiation accuracy, and ensuring the accuracy and reliability of the experimental results.

[0045] Vacuum gauge:

[0046] The vacuum gauge is used to monitor the vacuum level inside the target chamber in real time and provide feedback to the operator. Through the measurement of the vacuum gauge, the operator can accurately understand the vacuum status inside the target chamber, so as to adjust the operating parameters of the molecular pump or take other measures in a timely manner to ensure that the target chamber is always in a suitable vacuum environment for ion irradiation experiments, providing important data support for the smooth progress of the experiment.

[0047] Infrared observation window:

[0048] On the one hand, as an observation window, the operator can use it to observe in real time the state changes of the sample target plate and related components in the target chamber during ion irradiation, such as the color change of the sample, whether there are any abnormal phenomena, etc.; on the other hand, using infrared temperature measurement technology, the temperature of the sample target plate in the target chamber can be measured non-contactly, and the temperature changes of the sample during the irradiation process can be understood in time, providing an important basis for the adjustment of experimental parameters and the analysis of experimental results.

[0049] Insertable pneumatic Faraday cage:

[0050] It is primarily used to measure the current intensity of an ion beam. Using the principle of a Faraday cage, it accurately collects the charge in an ion beam and converts it into an electrical signal for output. The operator can calculate the ion beam current based on the magnitude of the electrical signal, thereby precisely measuring and controlling the ion beam intensity. This ensures that ion irradiation experiments are conducted according to the set dose, playing a key role in the accuracy and repeatability of experimental results.

[0051] Sample target plate:

[0052] The target plate is the direct target of ion irradiation experiments, used to hold the sample to be tested. Its structural design ensures that the sample is stably fixed to the target plate during irradiation. The sample's position and angle can be adjusted according to experimental requirements, ensuring that the sample is fully exposed to the ion beam. Furthermore, an electrically controlled heating wire is integrated within the target plate to heat the target plate and raise its temperature, meeting the requirements of ion irradiation experiments requiring high temperatures.

[0053] Water cooling pipe:

[0054] During ion irradiation experiments, the sample target plate and other components within the target chamber may generate heat. The water-cooling tube removes this heat through circulating cooling water, effectively controlling the temperature of the target plate and preventing component damage or deviations in experimental results due to excessive temperatures. This ensures that the entire experimental device maintains good thermal stability during long-term operation, providing a guarantee for the continuous and stable conduct of the experiment.

[0055] Thermocouple Wire:

[0056] As a temperature measurement element, a thermocouple wire is installed inside the sample target plate and enters the sample chamber. It accurately measures the temperature around the sample and transmits the temperature signal to an external temperature monitoring system. The temperature data provided by the thermocouple wire allows operators to fully understand the temperature distribution within the target chamber, promptly detect abnormal temperature changes, and take appropriate measures to ensure that the experiment is carried out under appropriate temperature conditions.

[0057] Electric heating wire:

[0058] Installed inside the sample target plate, the heating is controlled by an electronic control system. When high-temperature experiments are required, the electrically controlled heating wire rapidly raises the target plate temperature to the set value and maintains a stable heating state. Furthermore, when used in conjunction with thermocouple wires, it enables precise control and monitoring of the target plate temperature, meeting the temperature requirements of various experiments and expanding the application range of ion irradiation experiments.

[0059] Target plate sample chamber:

[0060] Used to place and secure samples to be tested, its structural design features a threaded quick-release design that matches the sample target plate, ensuring that the sample is stably placed on the target plate during irradiation. It can also be adjusted according to the shape and size of the sample to accommodate different types of samples. At the same time, the target plate sample chamber can also work in conjunction with the heating system and temperature measurement system within the target plate to provide a stable and controllable experimental environment for the sample.

[0061] How to use the device:

[0062] 1. Preparation before the experiment

[0063] First, check that all components of the entire apparatus are correctly installed and securely connected, ensuring that the gate valve is closed and the bellows are intact and leak-free. Next, place the sample to be tested in the target sample chamber, seal it with aluminum foil, and secure the chamber using the target sample chamber fixture to ensure that the sample does not move during irradiation.

[0064] Then, according to the experimental requirements, the sample target plate is preheated by the electrically controlled heating wire and the water cooling device. At the same time, the target plate temperature is monitored in real time using the thermocouple wire and the infrared observation window. When the target plate temperature reaches the experimental set value and stabilizes, the next step is prepared.

[0065] 2. Vacuum extraction and gas control

[0066] Open the gate valve and start the molecular pump to vacuum the target chamber. During the vacuum extraction process, the vacuum level inside the target chamber is monitored in real time using a vacuum gauge. When the vacuum level reaches the high vacuum state required for the experiment, close the gate valve and stop vacuum extraction.

[0067] If the experiment requires a specific gas environment, the required gas can be introduced into the target chamber through the gas control system, and the gas flow and pressure can be controlled by the plug valve to ensure that the gas environment inside the target chamber meets the experimental requirements.

[0068] 3. Ion beam irradiation operation

[0069] After the target chamber reaches the appropriate vacuum and gas environment, the ion source is activated to generate an ion beam, which is then directed onto the sample target plate by the ion beam control system. During the ion beam irradiation process, the current intensity of the ion beam is measured in real time by an inserted pneumatic Faraday cage, and the ion beam current is adjusted and controlled according to experimental requirements.

[0070] At the same time, the temperature of the sample target plate is monitored in real time using an infrared observation window and thermocouple wires to ensure that the sample temperature remains within the set range during the irradiation process. If the temperature fluctuates abnormally, it can be adjusted through the electrically controlled heating wire and water cooling tube to ensure the normal operation of the experiment.

[0071] 4. Experimental process observation and data recording

[0072] During the ion irradiation experiment, the operator can observe the status changes of the sample target plate and related components through the infrared observation window (temperature measurement), such as the color change of the sample, whether there are any abnormal phenomena, etc., and record the observed phenomena in a timely manner.

[0073] At the same time, through various temperature measuring elements (thermocouple wires, infrared observation windows) and plug-in pneumatic Faraday cups and other equipment, experimental data such as temperature data inside the target chamber and ion beam current data are collected in real time, and these data are recorded in a special experimental data recording system to provide a basis for the analysis and evaluation of experimental results.

[0074] 5. End of experiment and device restoration

[0075] When the ion irradiation experiment reaches the predetermined dose or time, the ion source is turned off and the ion beam irradiation is stopped. Then, the gate valve is opened and the gas inside the target chamber is exhausted through the molecular pump gas control system. The target chamber flange is then slowly removed to gradually break the vacuum in the target chamber and restore the target chamber to normal pressure.

[0076] Turn off the electrically controlled heating wire to stop heating the sample target plate, and simultaneously shut off the cooling water circulation in the water cooling pipe. After the temperature and pressure inside the target chamber return to normal, open the target chamber, remove the sample from the sample target plate, and clean and maintain the device to ensure normal operation the next time it is used.

[0077] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A terminal target chamber for a material radiation damage effect experiment, comprising a sample target plate and a target chamber, wherein the sample target plate is connected to the target chamber, and is characterized by: The sample target plate comprises a target plate, one end of the target plate away from the target chamber is detachably connected to a connecting assembly, a plurality of sample slots are provided on the target plate, internal threads are provided in the sample slots, and the sample slots are threadedly connected to the sample chamber.

2. The terminal target chamber for material radiation damage effect experiment according to claim 1, characterized in that: The sample chamber is externally connected to aluminum foil.

3. The terminal target chamber for material radiation damage effect experiment according to claim 1, characterized in that: The connecting assembly comprises a target plate connecting plate. One end of the target chamber close to the connecting assembly is provided with a target chamber connecting plate. The target plate connecting plate is detachably connected to the target chamber connecting plate.

4. The terminal target chamber for material radiation damage effect experiment according to claim 3, characterized in that: The connecting assembly also includes a moving assembly, which includes a frame and a bellows, the frame is fixedly connected to the target plate connecting plate, a linear guide rail is symmetrically provided in the frame, the linear guide rail is slidably connected to the moving plate, the moving plate is provided with a connecting piece at one end away from the target plate connecting plate, the connecting piece is detachably connected to a screw nut, the screw nut is threadably connected to a ball screw, the ball screw is rotatably connected to the frame, the connecting piece is fixedly connected to one end of the bellows, the other end of the bellows is fixedly connected to the target plate connecting plate, the connecting piece is fixedly connected to an inner tube in the bellows, the end of the inner tube away from the connecting piece is fixedly connected to an inner tube fixing piece, and the inner tube fixing piece is detachably connected to the target plate.

5. The terminal target chamber for material radiation damage effect experiment according to claim 4, characterized in that: The ball screw passes through one end of the inner side of the frame and extends outside the frame, and the ball screw is fixedly connected to a hand wheel.

6. The terminal target chamber for material radiation damage effect experiment according to claim 4, characterized in that: The inner tube is movably connected to an inner plate, and the inner plate is detachably connected to the target plate connecting plate.

7. A terminal target chamber for a material radiation damage effect experiment according to any one of claims 1 to 6, characterized in that: The target plate includes a first target plate, a second target plate and a target plate fixing piece. The target plate fixing piece is detachably connected to the first target plate. The target plate fixing piece is detachably connected to the connecting assembly. The first target plate is detachably connected to the second target plate. The second target plate is provided with a plurality of sample slots.

8. The terminal target chamber for material radiation damage effect experiment according to claim 7, characterized in that: The connection assembly also includes a heating wire connection and a thermocouple temperature measurement connection. The heating wire connection is connected to an electrically controlled heating wire at one end close to the first target plate, and the electrically controlled heating wire is installed inside the target plate. The thermocouple temperature measurement connection is connected to a thermocouple wire at one end close to the first target plate, and the thermocouple wire is installed inside the target plate and extends into the sample chamber.

9. The terminal target chamber for material radiation damage effect experiment according to claim 7, characterized in that: The connecting assembly further comprises a water cooling pipe, which passes through the inner pipe and is connected to the first target plate. A water cooling pipeline is provided in the first target plate.

10. The terminal target chamber for material radiation damage effect experiment according to claim 9, characterized in that: There are two water cooling pipes, which are respectively connected to the two ends of the water cooling pipeline.

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