Heavy ion irradiation test terminal for simulating wood star environment and test method thereof

Abstract

The invention provides a heavy ion irradiation test terminal for simulating a wood star environment and a test method thereof, and belongs to the technical field of space environment ground simulation. The problems that in the prior art, simulation factors are single, the simulation factors are seriously disjointed with the actual environment, and step-by-step tests cannot reveal the synergistic effect and the acceleration failure mechanism are solved. The device comprises a three-dimensional Helmholtz coil, a vacuum cabin, a vacuum high-low temperature sample table and a vacuum four-dimensional displacement table, the three-dimensional Helmholtz coil is arranged outside the vacuum cabin and used for generating a three-dimensional controllable magnetic field in a sample area in the vacuum cabin, and the vacuum four-dimensional displacement table is located in the vacuum cabin and used for generating a three-dimensional controllable magnetic field in a sample area in the vacuum cabin. And a vacuum high-low temperature sample table is mounted on the vacuum four-dimensional displacement table. Through the unified comprehensive monitoring and control system, the environment parameters and the irradiation parameters are subjected to time sequence programming and synchronous control, a complex task environment profile can be reproduced, and methodology upgrading from single-factor superposition to multi-physics coupling test is achieved.

Description

Technical Field

[0001] This invention belongs to the field of space environment ground simulation technology, and in particular relates to a heavy ion irradiation test terminal and test method for simulating the environment of Jupiter. Background Technology

[0002] Jupiter's orbit and reentry environment are characterized by three major features: deep space high vacuum, strong radiation, and intense temperature fluctuations. Traditional single-factor vacuum tests can no longer cover the comprehensive stresses experienced by the Jupiter probe during its on-orbit and reentry processes. Therefore, it is necessary to establish a three-in-one ground simulation scheme of "vacuum + radiation + thermal cycling" to conduct full-life-cycle assessments of the probe body, scientific payloads, and key connecting components.

[0003] Several international missions have explored the Jupiter system, including seven flybys and two orbits (Galileo and Juno). This paper summarizes the scientific objectives, payload configurations, and research results of these missions, analyzing their characteristics and implications. Based on this analysis and the identified unresolved issues, preliminary plans and future prospects for a Chinese Jupiter system scientific exploration mission are proposed.

[0004] To better plan China's scientific exploration missions in the Jupiter system, research is needed on the radiation resistance and adaptability of components in the extreme environments of space radiation, vacuum, and strong magnetic field coupling on Jupiter. This requires the development of a simulation device for radiation, vacuum, and strong magnetic field coupling environments, and the investigation of the total dose degradation mechanism, single-event degradation mechanism, physical model of energy absorption and ionization effects of strong magnetic fields on semiconductor devices subjected to space particle incidence, and device degradation patterns under irradiation and strong magnetic field coupling conditions.

[0005] Existing ground-based simulation equipment can typically only conduct single-factor experiments such as vacuum, irradiation, or temperature cycling independently. This is fundamentally different from the real physical environment of Jupiter's orbit and reentry process, where multiple factors coexist and are coupled, resulting in low fidelity of the experiments.

[0006] Simply superimposing different environmental stresses (such as irradiation followed by thermal cycling) in sequence cannot reproduce the synergistic effects that may occur when multiple stresses act simultaneously (e.g., radiation damage accelerates material performance degradation under thermal stress, and seals experience increased leakage under the combined effects of alternating hot and cold temperatures and vacuum). This masks the potential, most dangerous failure modes. Summary of the Invention

[0007] In view of this, in order to address the problems mentioned in the background technology, such as the reliance on a single simulation factor, a severe disconnect from the actual environment, and the inability of step-by-step experiments to reveal synergistic effects and accelerated failure mechanisms, this invention proposes a heavy-ion irradiation experimental terminal and its experimental method that simulates the Jupiter environment. It provides a three-in-one integrated simulation solution, creatively integrating an ultra-high vacuum system, a heavy-ion irradiation system, and a wide-range programmable thermal cycling system into a single terminal. This aims to achieve the synchronous, in-situ, and dynamic application of the three core environmental factors of "vacuum, radiation, and temperature," thereby constructing a comprehensive stress field in the laboratory that highly approximates the real environment of Jupiter. Simultaneously, it reveals the multi-physics coupling mechanism and failure law. By achieving synchronous multi-factor experiments, it aims to reveal the performance evolution, synergistic damage mechanism, and key failure modes of detector materials, components, and parts under the characteristic comprehensive stress of Jupiter, providing direct and accurate experimental data support for the radiation hardening, thermal control design, and reliability assessment of detectors.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a heavy ion irradiation experimental terminal simulating the Jupiter environment, comprising a three-dimensional Helmholtz coil, a vacuum chamber, a vacuum high and low temperature sample stage, and a vacuum four-dimensional displacement stage. The three-dimensional Helmholtz coil is disposed outside the vacuum chamber to generate a three-dimensional controllable magnetic field in the sample area within the vacuum chamber. The vacuum four-dimensional displacement stage is located inside the vacuum chamber, and a vacuum high and low temperature sample stage is mounted on the vacuum four-dimensional displacement stage.

[0009] Furthermore, the walls of the vacuum chamber are equipped with vacuum-sealed windows for introducing external particle accelerator beams.

[0010] Furthermore, an external particle beam irradiates the sample through a vacuum-sealed window.

[0011] Furthermore, the three-dimensional Helmholtz coil consists of three pairs of identical square conductor coils.

[0012] Furthermore, the three-dimensional Helmholtz coil adopts a three-dimensional coordinate system, with a total of six sets, two sets symmetrically set in each dimension.

[0013] Furthermore, each group of conductor coils in the three-dimensional Helmholtz coil carries a current I in the same direction, and the central axes of the six groups of three-dimensional coils are all coaxial with a dimensional axis.

[0014] Furthermore, the main structure of the vacuum chamber, the vacuum four-dimensional displacement stage, and the vacuum high and low temperature sample stage are all made of 6061 aluminum alloy or oxygen-free copper.

[0015] Furthermore, the heavy ion irradiation test terminal simulating the Jupiter environment also includes a comprehensive control system, which is used to synchronously control the triaxial current of the three-dimensional Helmholtz coil, the temperature of the vacuum high and low temperature sample stage, and the position of the vacuum four-dimensional displacement stage, and to receive the trigger signal of the external particle beam.

[0016] Furthermore, the bottom of the vacuum chamber is connected to a molecular pump via an exhaust pipe.

[0017] An experimental method using a heavy ion irradiation test terminal simulating the Jupiter environment involves installing a sample on a vacuum high-low temperature sample stage and pumping the vacuum chamber to a high vacuum using a molecular pump. A comprehensive control system is used to set the target magnetic field vector of the three-dimensional Helmholtz coil, the temperature curve of the vacuum high-low temperature sample stage, and the position of the vacuum four-dimensional displacement stage. After reaching the set vacuum level, magnetic field, and temperature, an external particle beam is activated to irradiate the sample. During or before irradiation, the sample temperature is dynamically changed according to a preset program, while maintaining a stable magnetic field and vacuum environment. Compared with existing technologies, the beneficial effects of the heavy ion irradiation experimental terminal simulating the Jupiter environment described in this invention are: (1) System integration of “three-in-one” or even “multi-in-one”: Innovatively integrate multiple independent and usually physically mutually exclusive systems such as ultra-high vacuum, three-dimensional controllable strong magnetic field, wide temperature range rapid temperature cycle and heavy ion irradiation into a shared non-magnetic vacuum chamber, realizing the synchronous, in-situ and dynamic application of multiple extreme environmental factors.

[0018] (2) Compatibility design under magnetic field environment: In order to achieve the uniformity of magnetic field in the sample area and no interference to internal components, the core chamber, internal displacement stage, sample stage and all fasteners adopt systematic non-magnetic / weak magnetic materials selection and design. This is the basis for ensuring the effectiveness and purity of magnetic field simulation.

[0019] (3) Precise realization of three-dimensional vector magnetic field: Using a three-dimensional Helmholtz coil as a magnetic field generating device, combined with independent high-precision power supply control, a uniform static magnetic field with arbitrarily set intensity and direction can be generated in the sample area, breaking through the limitation of a single axial magnetic field and more realistically simulating the vector environment of planetary space magnetic field.

[0020] (4) Synchronous and coordinated control of comprehensive parameters: Through a unified comprehensive monitoring and control system, environmental parameters (vacuum, magnetic field, temperature) and irradiation parameters (beam switch, dose) are programmed and synchronously controlled in sequence, which can reproduce complex mission environment profiles and realize the methodological upgrade from single-factor superposition to multi-physics field coupling experiment. Attached Figure Description

[0021] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings: Figure 1 This is a schematic diagram of the heavy ion irradiation test terminal simulating the Jupiter environment described in this invention; Figure 2 This is a half-section perspective view of the heavy ion irradiation test terminal simulating the Jupiter environment described in this invention. In the diagram: 1-3D Helmholtz coil, 2-vacuum chamber, 3-stand, 4-control integrated power supply box, 5-vacuum chamber cover, 6-vacuum high and low temperature sample stage, 7-vacuum four-dimensional displacement stage, 8-exhaust pipe, 9-molecular pump. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the drawings, and not all of them. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the invention.

[0023] See Figure 1-2 This embodiment describes a heavy ion irradiation experimental terminal simulating the Jupiter environment, comprising a vacuum chamber 2, a three-dimensional Helmholtz coil 1 disposed outside the vacuum chamber 2 for generating a three-dimensional controllable magnetic field in the sample area within the vacuum chamber 2, a vacuum four-dimensional displacement stage 7 disposed inside the vacuum chamber 2 and capable of operating in vacuum and magnetic field environments, a vacuum high and low temperature sample stage 6 mounted on the vacuum four-dimensional displacement stage 7, and a vacuum sealed window on the wall of the vacuum chamber 2 for introducing an external particle accelerator beam.

[0024] Because the experiment requires the sample to be tested in a high and low temperature, magnetic field and vacuum environment, the overall structure is as follows: a vacuum chamber 2 is designed in the center of the magnetic field environment, a vacuum four-dimensional displacement stage 7 is installed in the vacuum chamber 2, a vacuum high and low temperature sample stage 6 is fixed on the vacuum four-dimensional displacement stage 7, and the sample is fixed on the vacuum high and low temperature sample stage 6.

[0025] A three-dimensional Helmholtz coil 1 is installed outside the vacuum chamber 2. When the external three-dimensional Helmholtz coil 1 is energized, it applies a magnetic field to the vacuum chamber 2 at the center.

[0026] To achieve magnetic field homogeneity in the three-dimensional space of the sample, a three-dimensional Helmholtz coil 1 is used. The three-dimensional Helmholtz coil 1 consists of three pairs of identical square conductor coils. A three-dimensional coordinate system is employed, with each pair of conductor coils carrying a current I in the same direction. The central axes of all six pairs of coils are coaxial with a single dimensional axis. By applying different currents to the three pairs of conductor coils using a controller, a three-dimensional magnetic field of arbitrary strength can be achieved.

[0027] To better achieve magnetic field penetration of the sample, the vacuum chamber 2 is made of 6061 aluminum alloy. The screws and other accessories used to connect the vacuum chamber 2 are also made of non-magnetic materials. The fixing brackets of the vacuum four-dimensional displacement stage 7 inside the vacuum chamber 2 are also made of weakly magnetic materials.

[0028] The main structures of the non-magnetic vacuum chamber 2, the vacuum four-dimensional displacement stage 7, and the vacuum high and low temperature sample stage 6 are all made of 6061 aluminum alloy or oxygen-free copper.

[0029] The heavy ion irradiation test terminal simulating the Jupiter environment also includes a comprehensive control system, which is used to synchronously control the triaxial current of the three-dimensional Helmholtz coil 1, the temperature of the vacuum high and low temperature sample stage 6, and the position of the vacuum four-dimensional displacement stage 7, and to receive the trigger signal of the external particle beam.

[0030] The heavy ion irradiation experimental terminal simulating the Jupiter environment described in this invention comprises the following five parts: (1) Cylindrical non-magnetic vacuum chamber 2 is a chamber that provides a vacuum environment; (2) Three-dimensional Helmholtz coil 1, which can generate a three-dimensional magnetic field and the magnitude of the magnetic field can be controlled according to the requirements; (3) Vacuum four-dimensional displacement stage 7, which carries the sample in a vacuum and moves the sample to the required position; (4) Vacuum high and low temperature sample stage 6, to create an extreme high and low temperature environment for the sample; (5) Vacuum generation mechanism and control system, used to obtain a vacuum environment.

[0031] A method for conducting multi-factor coupling experiments using a heavy ion irradiation experimental terminal simulating the Jupiter environment, as described above, involves installing a sample on a vacuum high-low temperature sample stage 6; evacuating the vacuum chamber 2 to a high vacuum using a molecular pump 9; setting the target magnetic field vector of the three-dimensional Helmholtz coil 1, the temperature curve of the vacuum high-low temperature sample stage 6, and the position of the vacuum four-dimensional displacement stage 7 through a comprehensive control system; irradiating the sample with an external particle beam after the set vacuum level, magnetic field, and temperature are reached; dynamically changing the sample temperature according to a preset program during or before irradiation, while maintaining a stable magnetic field and vacuum environment.

[0032] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating orientation and positional relationships are based on the orientation and positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0033] The embodiments of the present invention disclosed above are merely illustrative of the invention. These embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention.

Claims

1. A heavy ion irradiation experimental terminal simulating the Jupiter environment, characterized in that: It includes a three-dimensional Helmholtz coil (1), a vacuum chamber (2), a vacuum high and low temperature sample stage (6) and a vacuum four-dimensional displacement stage (7). The three-dimensional Helmholtz coil (1) is set outside the vacuum chamber (2) to generate a three-dimensional controllable magnetic field in the sample area inside the vacuum chamber (2). The vacuum four-dimensional displacement stage (7) is located inside the vacuum chamber (2), and the vacuum high and low temperature sample stage (6) is installed on the vacuum four-dimensional displacement stage (7).

2. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 1, characterized in that: The vacuum chamber (2) is provided with a vacuum-sealed window on its wall for introducing external particle accelerator beams.

3. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 2, characterized in that: An external particle beam irradiates the sample through a vacuum-sealed window.

4. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 1, characterized in that: The three-dimensional Helmholtz coil (1) consists of three pairs of identical square conductor coils.

5. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 4, characterized in that: The three-dimensional Helmholtz coil (1) adopts a three-dimensional coordinate system, with a total of six sets, and two sets are symmetrically set in each dimension.

6. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 5, characterized in that: Each group of conductor coils of the three-dimensional Helmholtz coil (1) carries a current I in the same direction, and the central axis of the six groups of three-dimensional coils is coaxial with a dimensional axis.

7. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 1, characterized in that: The main structure of the vacuum chamber (2), the vacuum four-dimensional displacement stage (7), and the vacuum high and low temperature sample stage (6) are all made of 6061 aluminum alloy or oxygen-free copper.

8. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 1, characterized in that: The heavy ion irradiation test terminal simulating the Jupiter environment also includes a comprehensive control system, which is used to synchronously control the triaxial current of the three-dimensional Helmholtz coil (1), the temperature of the vacuum high and low temperature sample stage (6), and the position of the vacuum four-dimensional displacement stage (7), and to receive the trigger signal of the external particle beam.

9. The heavy ion irradiation experimental terminal simulating the Jupiter environment according to claim 1, characterized in that: The bottom of the vacuum chamber (2) is connected to a molecular pump (9) via an exhaust pipe (8).

10. A test method using a heavy ion irradiation test terminal simulating the Jupiter environment as described in any one of claims 1-9, characterized in that: The sample is installed on the vacuum high and low temperature sample stage (6), and the vacuum chamber (2) is pumped to a high vacuum by the molecular pump (9). The target magnetic field vector of the three-dimensional Helmholtz coil (1), the temperature curve of the vacuum high and low temperature sample stage (6) and the position of the vacuum four-dimensional displacement stage (7) are set by the integrated control system. After the set vacuum degree, magnetic field and temperature are reached, the external particle beam is started to irradiate the sample. During or before the irradiation, the sample temperature is dynamically changed according to the preset program, and the magnetic field and vacuum environment are kept stable.

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