A neutron tube testing device and testing method

Abstract

The application provides a neutron tube testing device and a testing method. The neutron tube testing device comprises a vacuum mechanism, an atmosphere control mechanism, a feeding mechanism and a supporting mechanism, the vacuum mechanism and the atmosphere control mechanism are both installed on the supporting mechanism, the feeding mechanism is installed in the vacuum mechanism, and the atmosphere control mechanism is connected with the vacuum mechanism. The device is used for testing the service life of a neutron target and the neutron yield of the neutron target, and checking the qualified rate of the neutron target in the production link. The neutron target is tested before the neutron tube is sealed, so that the whole neutron tube is prevented from being scrapped, material waste is avoided, and the research and development testing time is prevented from being delayed. The device is used for researching the influence of different film thicknesses on the neutron yield of the neutron target, the influence of different magnetic field strengths, different extraction hole structures and other factors on the ion source, and the influence of different structure ion sources or different structure accelerating electrodes on the neutron yield, so that the economic cost and time cost of the sealed neutron tube are reduced.

Description

Technical Field

[0001] This invention relates to the field of neutron tube testing technology, and in particular to a neutron tube testing device and testing method. Background Technology

[0002] Neutrons, as an important research tool, have been widely used in many fields such as medicine, non-destructive testing, and energy exploration. Currently, commonly used neutron sources include nuclear reactors, particle accelerators, radioactive sources, and sealed neutron tubes. Among them, particle accelerators and sealed neutron tubes are two commonly used neutron generators. Their principle is to accelerate a deuterium ion beam to bombard a tritium target, generating a deuterium-tritium fusion reaction that produces 14.1 MeV of monochromatic neutrons.

[0003] In a sealed neutron tube, the neutron target is the core component that directly generates neutrons, and its hydrogen absorption performance directly affects the yield and lifespan of the sealed neutron tube. Generally, neutron target performance testing is conducted after the neutron tube is encapsulated. If the neutron target performs poorly, the entire neutron tube will be scrapped, resulting not only in the waste of other materials but also significant delays in research and development testing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a neutron tube testing device and testing method to address the shortcomings of the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a neutron tube testing device, comprising: a vacuum mechanism, an atmosphere control mechanism, a feed mechanism and a support mechanism, wherein the vacuum mechanism and the atmosphere control mechanism are both mounted on the support mechanism, the feed mechanism is mounted in the vacuum mechanism, the atmosphere control mechanism is connected to the vacuum mechanism, and the feed mechanism is used to mount the ion source assembly, neutron target and accelerating electrode of the neutron tube, and to provide the test voltage.

[0006] The beneficial effects of adopting the technical solution of this invention are: It allows for testing the lifetime and neutron yield of the neutron target in a neutron tube without encapsulation, and verifies the pass rate of the neutron target during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. It can be used during the research and development phase to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing neutron tubes.

[0007] Furthermore, the vacuum mechanism includes: a vacuum chamber, a vacuum pumping device, and a vacuum measuring device. The vacuum pumping device and the vacuum measuring device are both connected to the vacuum chamber. The feed mechanism is installed in the vacuum chamber. The atmosphere control mechanism is connected to the vacuum chamber. The vacuum mechanism is connected to a venting valve.

[0008] The beneficial effects of adopting the above-mentioned further technical solutions are: the vacuum mechanism facilitates vacuum treatment of the vacuum chamber, providing a vacuum environment for testing the ion source components, neutron target, and accelerating electrode of the neutron tube; and the vacuum measurement equipment facilitates direct observation of the current vacuum level in the vacuum chamber.

[0009] Furthermore, the vacuum pumping equipment includes multiple dry pumps, molecular pumps, solenoid valves, and gate valves, with the molecular pumps connected to the vacuum chamber via the gate valves.

[0010] The beneficial effects of adopting the above-mentioned further technical solutions are: the vacuum mechanism facilitates vacuum treatment of the vacuum chamber, providing a vacuum environment for testing the ion source components, neutron target, and accelerating electrode of the neutron tube; and the vacuum gauge facilitates direct observation of the current vacuum level of the vacuum chamber.

[0011] Furthermore, the feed mechanism includes: a first electrode assembly for mounting the ion source assembly of the neutron tube, and a second electrode assembly for mounting the neutron target and the accelerating electrode, wherein the first electrode assembly is disposed at the bottom of the vacuum mechanism and the second electrode assembly is disposed at the top of the vacuum mechanism.

[0012] The beneficial effects of adopting the above-mentioned further technical solution are: the first electrode assembly at the bottom of the vacuum chamber is fed in, the second electrode assembly at the top is fed in, and the second electrode assembly can be fed in through a voltage divider resistor to achieve high voltage power supply of different voltages, so that one electrode assembly can supply different voltages.

[0013] Furthermore, the first electrode assembly and the second electrode assembly are coaxially arranged. The second electrode assembly is provided with a voltage divider resistor and two feed electrodes. The two feed electrodes are provided with threads for mounting the neutron target and the accelerating electrode, respectively.

[0014] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first electrode assembly and the second electrode assembly are coaxially arranged, ensuring that the center lines of the ion source, accelerating electrode, and neutron target of the neutron tube under test are coaxial. The neutron target and the accelerating electrode are respectively screwed directly onto the two feed electrodes on the second electrode assembly through threads, ensuring the coaxiality of the neutron target and the accelerating electrode. The second electrode assembly can be fed with high voltages of different voltages through voltage divider resistors, realizing the supply of different voltages to a single electrode assembly.

[0015] Furthermore, the atmosphere control mechanism includes: a gas cylinder, a flow control valve, and a third solenoid valve. The gas cylinder is connected to one end of the flow control valve via a pipeline, one end of the third solenoid valve is connected to the other end of the flow control valve via a pipeline, and the other end of the third solenoid valve is connected to the vacuum mechanism via a pipeline.

[0016] The beneficial effects of adopting the above-mentioned further technical solution are: the atmosphere control mechanism consists of a gas cylinder, a flow control valve, a third solenoid valve and a gas pipe, and is connected to the vacuum chamber of the vacuum mechanism through the gas pipe to provide DT reaction gas for testing.

[0017] Furthermore, the support mechanism includes: a test platform support frame, an ion source housing for mounting the ion source assembly of the neutron tube, and an ion source bracket. The vacuum mechanism, the atmosphere control mechanism, and the ion source bracket are all mounted on the test platform support frame, and the ion source housing and the ion source bracket are connected by threads.

[0018] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The support mechanism includes a test platform support frame and an ion source support mechanism inside the vacuum chamber. The test platform is entirely mounted on the test platform support frame. The ion source support mechanism inside the vacuum chamber includes an ion source shell and an ion source bracket. The ion source shell is mounted on the ion source bracket, and the ion source shell and the ion source bracket are connected by external threads, allowing for free adjustment of the ion source height to achieve different target distance tests. By replacing the ion source shell and the ion source bracket, ion sources with different structures can be matched for testing.

[0019] Furthermore, it also includes a control mechanism, which is connected to the vacuum mechanism, the atmosphere control mechanism, and the feed mechanism respectively.

[0020] Furthermore, the present invention also provides a neutron tube testing method, based on a neutron tube testing device described in any one of the above claims, the neutron tube testing method comprising:

[0021] S1. Install the ion source assembly, neutron target, and accelerating electrode of the neutron tube onto the feed mechanism respectively;

[0022] S2. Place the feed mechanism into the vacuum mechanism;

[0023] S3. Adjust the vacuum mechanism to the preset vacuum level;

[0024] S4. Gas will be introduced into the vacuum mechanism through the atmosphere control mechanism;

[0025] S5. The ion beam generated by the ion source assembly will be accelerated by the feeding mechanism and used to bombard the neutron target to produce neutrons.

[0026] S6. The neutrons produced by the neutron target will be measured.

[0027] The beneficial effects of adopting the technical solution of this invention are: It allows for testing the lifetime and neutron yield of the neutron target in a neutron tube without encapsulation, and verifies the pass rate of the neutron target during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. It can be used during the research and development phase to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing neutron tubes.

[0028] Furthermore, step S6 is followed by:

[0029] After the test is completed, shut down the vacuum mechanism and release the gas until the vacuum level of the vacuum mechanism is the same as atmospheric pressure;

[0030] Remove the ion source components, neutron target, and accelerating electrode from the neutron tube.

[0031] The beneficial effects of adopting the above-mentioned further technical solutions are: It facilitates the testing of the ion source components, neutron target, and accelerating electrode of the neutron tube; it allows for testing the lifetime and neutron yield of the neutron target without encapsulation; and it enables verification of the neutron target's pass rate during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. During the research and development phase, it can be used to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing the neutron tube.

[0032] The advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] Figure 1 This is one of the structural schematic diagrams of the neutron tube testing device provided in the embodiments of the present invention.

[0034] Figure 2 This is the second schematic diagram of the neutron tube testing device provided in an embodiment of the present invention.

[0035] Figure 3 This is a schematic flowchart illustrating the neutron tube testing method provided in an embodiment of the present invention.

[0036] Explanation of reference numerals: 1. Vacuum mechanism; 2. Atmosphere control mechanism; 3. Ion source assembly; 4. Neutron target; 5. Accelerating electrode; 6. Feed mechanism; 7. Support mechanism; 8. Vacuum chamber; 9. Vacuum pumping equipment; 10. Vacuum measuring equipment; 16. First electrode assembly; 17. Second electrode assembly; 22. Control mechanism; 23. Test platform support frame. Detailed Implementation

[0037] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0038] like Figure 1 and Figure 2 As shown, this embodiment of the invention provides a neutron tube testing device, including: a vacuum mechanism 1, an atmosphere control mechanism 2, a feed mechanism 6, and a support mechanism 7. The vacuum mechanism 1 and the atmosphere control mechanism 2 are both mounted on the support mechanism 7. The feed mechanism 6 is mounted in the vacuum mechanism 1. The atmosphere control mechanism 2 is connected to the vacuum mechanism 1. The feed mechanism 6 is used to install the ion source assembly 3, the neutron target 4, and the accelerating electrode 5 of the neutron tube, and to provide the test voltage.

[0039] The beneficial effects of adopting the technical solution of this invention are: It allows for testing the lifetime and neutron yield of the neutron target in a neutron tube without encapsulation, and verifies the pass rate of the neutron target during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. It can be used during the research and development phase to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing neutron tubes.

[0040] like Figure 1 and Figure 2 As shown, the vacuum mechanism 1 further includes: a vacuum chamber 8, a vacuum pumping device 9, and a vacuum measuring device 10. The vacuum pumping device 9 and the vacuum measuring device 10 are both connected to the vacuum chamber 8. The feed mechanism 6 is installed in the vacuum chamber 8. The atmosphere control mechanism 2 is connected to the vacuum chamber 8. The vacuum mechanism 1 is connected to a venting valve.

[0041] The beneficial effects of adopting the above-mentioned further technical solutions are: the vacuum mechanism facilitates vacuum treatment of the vacuum chamber, providing a vacuum environment for testing the ion source components, neutron target, and accelerating electrode of the neutron tube; and the vacuum measurement equipment facilitates direct observation of the current vacuum level in the vacuum chamber.

[0042] like Figure 1 and Figure 2 As shown, the vacuum pumping device 9 further includes: multiple dry pumps, a molecular pump, a first solenoid valve, a second solenoid valve, and a gate valve. The molecular pump is connected to the vacuum chamber 1 through the gate valve. One end of the first solenoid valve and the second solenoid valve are both connected to the molecular pump. The multiple dry pumps are respectively connected to the other end of the first solenoid valve and the second solenoid valve. The vacuum measuring device 10 is a vacuum gauge.

[0043] The beneficial effects of adopting the above-mentioned further technical solutions are: the vacuum mechanism facilitates vacuum treatment of the vacuum chamber, providing a vacuum environment for testing the ion source components, neutron target, and accelerating electrode of the neutron tube; and the vacuum gauge facilitates direct observation of the current vacuum level of the vacuum chamber.

[0044] like Figure 1 and Figure 2 As shown, the feed mechanism 6 further includes: a first electrode assembly 16 for mounting the ion source assembly 3 of the neutron tube, and a second electrode assembly 17 for mounting the neutron target 4 and the accelerating electrode 5. The first electrode assembly 16 is disposed at the bottom of the vacuum mechanism 1, and the second electrode assembly 17 is disposed at the top of the vacuum mechanism 1.

[0045] The beneficial effects of adopting the above-mentioned further technical solution are: the first electrode assembly at the bottom of the vacuum chamber is fed in, the second electrode assembly at the top is fed in, and the second electrode assembly can be fed in through a voltage divider resistor to achieve high voltage power supply of different voltages, so that one electrode assembly can supply different voltages.

[0046] like Figure 1 and Figure 2 As shown, the first electrode assembly 16 and the second electrode assembly 17 are coaxially arranged. The second electrode assembly 17 is provided with a voltage divider resistor and two feed electrodes. The two feed electrodes are provided with threads for mounting the neutron target 4 and the accelerating electrode 5.

[0047] The beneficial effects of adopting the above-mentioned further technical solution are as follows: the first electrode assembly and the second electrode assembly are coaxially arranged, ensuring that the center lines of the ion source, accelerating electrode, and neutron target of the neutron tube under test are coaxial. The neutron target and the accelerating electrode are respectively screwed directly onto the two feed electrodes on the second electrode assembly through threads, ensuring the coaxiality of the neutron target and the accelerating electrode. The second electrode assembly can be fed with high voltages of different voltages through voltage divider resistors, realizing the supply of different voltages to a single electrode assembly.

[0048] like Figure 1 and Figure 2As shown, the atmosphere control mechanism 2 further includes: a gas cylinder, a flow control valve, and a third solenoid valve. The gas cylinder is connected to one end of the flow control valve through a pipeline, one end of the third solenoid valve is connected to the other end of the flow control valve through a pipeline, and the other end of the third solenoid valve is connected to the vacuum mechanism 1 through a pipeline.

[0049] The beneficial effects of adopting the above-mentioned further technical solution are: the atmosphere control mechanism consists of a gas cylinder, a flow control valve, a third solenoid valve and a gas pipe, and is connected to the vacuum chamber of the vacuum mechanism through the gas pipe to provide DT reaction gas for testing.

[0050] like Figure 1 and Figure 2 As shown, the support mechanism 7 further includes: a test platform support frame, an ion source shell for mounting the ion source assembly 3 of the neutron tube, and an ion source bracket. The vacuum mechanism 1, the atmosphere control mechanism 2, and the ion source bracket are all mounted on the test platform support frame. The ion source shell and the ion source bracket are connected by threads.

[0051] The beneficial effects of adopting the above-mentioned further technical solution are as follows: The support mechanism includes a test platform support frame and an ion source support mechanism inside the vacuum chamber. The test platform is entirely mounted on the test platform support frame. The ion source support mechanism inside the vacuum chamber includes an ion source shell and an ion source bracket. The ion source shell is mounted on the ion source bracket, and the ion source shell and the ion source bracket are connected by external threads, allowing for free adjustment of the ion source height to achieve different target distance tests. By replacing the ion source shell and the ion source bracket, ion sources with different structures can be matched for testing.

[0052] The ion source housing and the ion source support are both equipped with wiring holes, and the ion source housing is equipped with an ion source housing plug.

[0053] Furthermore, it also includes a control mechanism 22, which is connected to the vacuum mechanism 1, the atmosphere control mechanism 2, and the feed mechanism 6 respectively.

[0054] This invention provides a neutron tube testing device, which can be a multifunctional testing platform including a vacuum mechanism, an atmosphere control mechanism, a high-voltage feed mechanism (feed mechanism), a support mechanism, a control mechanism, etc.

[0055] The vacuum system includes a vacuum chamber, vacuum pumping equipment, and vacuum measuring equipment. Both the vacuum pumping equipment and the vacuum measuring equipment are connected to the vacuum chamber via flanges. The vacuum pumping equipment consists of a dry pump, a molecular pump, and several solenoid valves (a first solenoid valve and a second solenoid valve).

[0056] The high-voltage feed mechanism (feed mechanism) consists of a first electrode assembly and a second electrode assembly. The first electrode assembly feeds in from the bottom of the vacuum chamber, and the second electrode assembly feeds in from the top of the vacuum chamber. The top of the vacuum chamber can be opened. To ensure that the center lines of the ion source to be tested, the accelerating electrode, and the neutron target are coaxial, the first electrode assembly and the second electrode assembly are arranged coaxially.

[0057] The first electrode assembly is connected to the ion source anode of the neutron tube, providing the anode voltage. After entering the vacuum mechanism, the second electrode assembly is divided by a voltage divider resistor, and can then be connected to the neutron target and the accelerating electrode respectively, providing the accelerating voltage and the target voltage.

[0058] To ensure the coaxiality of the neutron target and the accelerating electrode, the neutron target and the accelerating electrode are respectively screwed directly onto the two feed electrodes of the second electrode assembly via threads.

[0059] The atmosphere control mechanism consists of a gas cylinder, a flow control valve, a solenoid valve (third solenoid valve), and a gas pipe, which is connected to the vacuum chamber through the gas pipe to provide DT reaction gas for the test.

[0060] The control mechanism can be used to control vacuum pumping equipment, vacuum mechanisms, feed mechanisms, and atmosphere control mechanisms.

[0061] The support mechanism includes a test platform support frame and an ion source support mechanism inside the vacuum chamber. The entire test platform is mounted on the test platform support frame. The ion source support mechanism inside the vacuum chamber includes an ion source shell and an ion source bracket, which are connected by external threads, allowing for free adjustment of the ion source height to achieve different target-to-end distance tests.

[0062] like Figure 3 As shown, in addition, the present invention also provides a neutron tube testing method, based on a neutron tube testing device according to any one of the above claims, the neutron tube testing method comprising:

[0063] S1. Install the ion source assembly, neutron target, and accelerating electrode of the neutron tube onto the feed mechanism respectively;

[0064] S2. Place the feed mechanism into the vacuum mechanism;

[0065] S3. Adjust the vacuum mechanism to the preset vacuum level;

[0066] S4. Gas will be introduced into the vacuum mechanism through the atmosphere control mechanism;

[0067] S5. The ion beam generated by the ion source assembly will be accelerated by the feeding mechanism and used to bombard the neutron target to produce neutrons.

[0068] S6. The neutrons produced by the neutron target will be measured.

[0069] The beneficial effects of adopting the technical solution of this invention are: It allows for testing the lifetime and neutron yield of the neutron target in a neutron tube without encapsulation, and verifies the pass rate of the neutron target during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. It can be used during the research and development phase to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing neutron tubes.

[0070] Furthermore, step S6 is followed by:

[0071] After the test is completed, shut down the vacuum mechanism and release the gas until the vacuum level of the vacuum mechanism is the same as atmospheric pressure;

[0072] Remove the ion source components, neutron target, and accelerating electrode from the neutron tube.

[0073] The beneficial effects of adopting the above-mentioned further technical solutions are: It facilitates the testing of the ion source components, neutron target, and accelerating electrode of the neutron tube; it allows for testing the lifetime and neutron yield of the neutron target without encapsulation; and it enables verification of the neutron target's pass rate during the production process. Testing the neutron target before encapsulation prevents the entire neutron tube from being scrapped due to poor neutron target performance, avoids waste of other materials, and prevents significant delays in research and development testing. During the research and development phase, it can be used to study the impact of different film thicknesses on neutron target yield, the influence of different magnetic field strengths and different extraction hole structures on the ion source, and the impact of different ion source structures or different accelerating electrode structures on neutron yield, thereby reducing the economic and time costs of sealing the neutron tube.

[0074] Furthermore, step S1 includes: replacing the feed mechanism with a different model according to the different models of the neutron tube to be tested.

[0075] The beneficial effects of adopting the above-mentioned further technical solutions are as follows: By replacing the ion source shell and ion source support, ion sources with different structures can be matched for testing. By replacing magnet combinations with different magnetic field strengths or extraction electrodes with different extraction hole structures, ion source structure optimization tests can be performed. By replacing accelerating electrodes with different structures, the accelerating electrode structure in the neutron tube can be optimized, reducing the size of the neutron tube. By replacing neutron targets with different film thicknesses, the influence of film thickness on neutron yield can be studied to determine the optimal neutron target film thickness.

[0076] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A neutron tube testing device, characterized in that, include: The system comprises a vacuum mechanism, an atmosphere control mechanism, a feed mechanism, and a support mechanism. The vacuum mechanism and the atmosphere control mechanism are both mounted on the support mechanism. The feed mechanism is installed within the vacuum mechanism. The atmosphere control mechanism is connected to the vacuum mechanism. The feed mechanism is used to mount the ion source assembly, neutron target, and accelerating electrode of the neutron tube, and to provide a test voltage. The vacuum mechanism includes a vacuum chamber, a vacuum pumping device, and a vacuum measuring device. The vacuum pumping device and the vacuum measuring device are both connected to the vacuum chamber. The feed mechanism is installed within the vacuum chamber. The atmosphere control mechanism is connected to the vacuum chamber. The vacuum mechanism is also connected to a venting valve. The vacuum pumping equipment includes multiple dry pumps, molecular pumps, solenoid valves, and gate valves. The molecular pumps are connected to the vacuum chamber via the gate valves. The feed mechanism includes a first electrode assembly for mounting the ion source assembly of the neutron tube and a second electrode assembly for mounting the neutron target and accelerating electrode. The first electrode assembly is located at the bottom of the vacuum mechanism, and the second electrode assembly is located at the top of the vacuum mechanism. The first electrode assembly and the second electrode assembly are coaxially arranged. The second electrode assembly is provided with a voltage divider resistor and two feed electrodes. The two feed electrodes are provided with threads for mounting the neutron target and accelerating electrode, one for each.

2. The neutron tube testing device according to claim 1, characterized in that, The atmosphere control mechanism includes: a gas cylinder, a flow control valve, and a third solenoid valve. The gas cylinder is connected to one end of the flow control valve via a pipeline, and one end of the third solenoid valve is connected to the other end of the flow control valve via a pipeline. The other end of the third solenoid valve is connected to the vacuum mechanism via a pipeline.

3. The neutron tube testing device according to claim 1, characterized in that, The support mechanism includes: a test platform support frame, an ion source shell for mounting the ion source assembly of the neutron tube, and an ion source bracket. The vacuum mechanism, the atmosphere control mechanism, and the ion source bracket are all mounted on the test platform support frame. The ion source shell and the ion source bracket are connected by threads.

4. The neutron tube testing device according to claim 1, characterized in that, Also includes: A control mechanism is provided, which is connected to the vacuum mechanism, the atmosphere control mechanism, and the feed mechanism.

5. A neutron tube testing method, characterized in that, Based on the neutron tube testing apparatus according to any one of claims 1 to 4, the neutron tube testing method includes: S1. Install the ion source assembly, neutron target, and accelerating electrode of the neutron tube onto the feed mechanism respectively; S2. Place the feed mechanism into the vacuum mechanism; S3. Adjust the vacuum mechanism to the preset vacuum level; S4. Gas will be introduced into the vacuum mechanism through the atmosphere control mechanism; S5. The ion beam generated by the ion source assembly will be accelerated by the feeding mechanism and used to bombard the neutron target to produce neutrons. S6. The neutrons produced by the neutron target will be measured; Step S6 is followed by: After the test is completed, shut down the vacuum mechanism and release the gas until the vacuum level of the vacuum mechanism is the same as atmospheric pressure; Remove the ion source components, neutron target, and accelerating electrode from the neutron tube.

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