Radio frequency phase stabilization link system and control method applied to free electron laser device

Abstract

The application relates to the technical field of large scientific devices, and discloses a radio frequency phase stabilization link system and a control method applied to a free electron laser device, which comprises a double-layer constant-temperature pipeline, a first temperature control unit, a second temperature control unit, a first temperature measuring unit, a second temperature measuring unit and a control module. The double-layer constant-temperature pipeline is composed of a plurality of double-layer structures, and an inner layer pipeline and an outer layer pipeline are formed in the double-layer constant-temperature pipeline. The inner layer pipeline is used for arranging radio frequency cables, and the outer layer pipeline is arranged around the periphery of the inner layer pipeline. A plurality of first temperature control units and a plurality of first temperature measuring units are arranged in the inner layer pipeline. A plurality of second temperature control units and a plurality of second temperature measuring units are arranged in the outer layer pipeline. The control module is electrically connected with the plurality of first temperature control units, the plurality of second temperature control units, the plurality of first temperature measuring units and the plurality of second temperature measuring units. At least one first temperature control unit, one second temperature control unit, one first temperature measuring unit and one second temperature measuring unit are arranged in each double-layer structure to realize distributed and independent temperature control.

Description

Technical Field

[0001] This invention relates to the field of large scientific devices, and in particular to a radio frequency phase-stabilized link system and control method for free-electron laser devices. Background Technology

[0002] In large scientific facilities, the stability of the radio frequency (RF) link is the cornerstone for achieving the designed performance and producing the expected scientific results. Currently, the main methods for RF phase stabilization in large scientific facilities are water cooling and gas cooling. Specifically, the water cooling method involves wrapping the RF cables and optical fibers in aluminum tubing, and then placing water-cooled pipes on the outer layer to control the link temperature. The gas cooling method involves placing the RF cables in the inner layer of pipes and filling the outer layer of pipes with a constant-temperature gas to isolate the influence of ambient temperature and achieve temperature control.

[0003] However, existing RF phase stabilization methods, whether water-cooled or air-cooled, rely on filling the RF cable with a constant-temperature fluid to isolate it from ambient temperature. This fluid flow carries risks of leakage and vibration, resulting in low temperature control accuracy. Furthermore, the complex structure and large space requirements limit its application scenarios.

[0004] Therefore, existing technologies still need to be improved and developed. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a radio frequency phase stabilization link system and control method for free electron laser devices, aiming to solve the problems of poor temperature control effect, inconvenience of use, and inability to meet the stability requirements of free electron laser devices during use by existing radio frequency phase stabilization methods.

[0006] The technical solution of the present invention is as follows: A radio frequency phase-stabilized link system for a free-electron laser device, comprising: The double-layer constant temperature pipeline is composed of several double-layer structures connected in sequence, and is used to connect to the constant temperature cabinet of the terminal equipment; the double-layer constant temperature pipeline has an inner layer pipeline and an outer layer pipeline, the inner layer pipeline is used to lay radio frequency cables, and the outer layer pipeline surrounds the outer perimeter of the inner layer pipeline. A plurality of first temperature control units and a plurality of second temperature control units are respectively disposed in the inner layer pipe and the outer layer pipe, for raising or lowering the temperature; A plurality of first temperature measuring units and a plurality of second temperature measuring units are respectively disposed in the inner layer pipe and the outer layer pipe for collecting temperature data; The control module is electrically connected to a plurality of the first temperature control units, a plurality of the second temperature control units, a plurality of the first temperature measuring units, and a plurality of the second temperature measuring units. Each of the aforementioned double-layer structures is provided with at least one first temperature control unit, one second temperature control unit, one first temperature measuring unit, and one second temperature measuring unit.

[0007] The radio frequency phase-stabilized link system applied to a free-electron laser device, wherein the dual-layer structure includes an outer insulation layer, an outer tube, an inner insulation layer, and an inner tube nested from the outside in; The first temperature control unit is disposed between the inner insulation layer and the inner tube; the second temperature control unit is disposed between the outer insulation layer and the outer tube; the inner cavity of the inner tube is the inner layer pipe; and the outer layer pipe is formed between the outer tube and the inner insulation layer.

[0008] The radio frequency phase-stabilized link system applied to a free-electron laser device, wherein the first temperature measuring unit is disposed on the inner wall of the inner layer pipe; and the second temperature measuring unit is disposed on the inner wall of the outer layer pipe.

[0009] The radio frequency phase-stabilized link system applied to a free-electron laser device, wherein the first temperature measurement unit is a thermistor temperature sensor or a thermocouple temperature sensor; and / or, the second temperature measurement unit is a thermistor temperature sensor or a thermocouple temperature sensor.

[0010] The radio frequency phase-stabilized link system applied to a free-electron laser device, wherein the first temperature control unit is a semiconductor cooling chip or a thin-film heating chip; and / or, the second temperature control unit is a semiconductor cooling chip or a thin-film heating chip.

[0011] The radio frequency phase-stabilized link system applied to a free-electron laser device includes a control module comprising several PID controllers and a display screen. The PID controllers are electrically connected to the first temperature control unit and the first temperature measurement unit in the dual-layer structure, or the PID controllers are electrically connected to the second temperature control unit and the second temperature measurement unit in the dual-layer structure. The display screen is connected to the PID controllers and is used to display the temperature data collected by the first and second temperature measurement units.

[0012] The radio frequency phase-stabilized link system applied to a free-electron laser device further includes several third temperature measurement units and several fourth temperature measurement units. The third temperature measurement units extend into the center of the inner pipe to collect ambient temperature data inside the inner pipe; the fourth temperature measurement units extend into the center of the outer pipe to collect ambient temperature data inside the outer pipe.

[0013] This application also discloses a control method for a radio frequency (RF) phase-stable link system, used in an RF phase-stable link system applied to a free-electron laser device as described in any of the preceding claims; wherein, it includes: The inner layer temperature data is collected through the first temperature measuring unit, and the outer layer temperature data is collected through the second temperature measuring unit. The inner layer temperature data is compared with the inner layer preset temperature value. If the inner layer temperature data is lower than the inner layer preset temperature value, a control command is generated to increase the output power of the first temperature control unit. If the inner layer temperature data is higher than the inner layer preset temperature value, a control command is generated to temporarily shut down the first temperature control unit or drive the first temperature control unit to cool. The outer layer temperature data is compared with the preset outer layer temperature value. If the outer layer temperature data is lower than the preset outer layer temperature value, a control command is generated to increase the output power of the second temperature control unit. If the outer layer temperature data is higher than the preset outer layer temperature value, a control command is generated to temporarily shut down the second temperature control unit or drive the second temperature control unit to cool.

[0014] In the control method of the radio frequency phase-stable link system, the preset temperature value of the inner layer is 1-2℃ higher than the preset temperature value of the outer layer.

[0015] This application also discloses a free-electron laser device, which includes a radio frequency phase-stabilized link system for a free-electron laser device as described in any of the preceding claims.

[0016] Compared with the prior art, the embodiments of the present invention have the following advantages: The radio frequency (RF) phase-stabilized link system disclosed in this invention connects multiple double-layer structures to form a double-layer thermostatic pipeline for RF cable arrangement, enabling long-distance RF signal transmission. By setting a first temperature control unit and a first temperature measurement unit inside the inner pipeline, and a second temperature control unit and a second temperature measurement unit inside the outer pipeline, dual temperature control is achieved for both the inner and outer pipelines. Furthermore, temperature control is performed on a per-double-layer structure basis. The first and second temperature measurement units independently detect the temperature of the internal space of each double-layer structure and independently control the output power of the first and second temperature control units within each double-layer structure. This segmented temperature control improves control accuracy, enhances temperature uniformity throughout the double-layer thermostatic pipeline, stabilizes the electrical characteristics of the RF cable, stabilizes the signal phase, and reduces drift in the RF phase-stabilized link. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a simplified structural diagram of the radio frequency phase-stabilized link system applied to the free-electron laser device in this invention; Figure 2 This is a schematic diagram of the double-layer structure in this invention; Figure 3 This is a flowchart of the control method for the radio frequency phase-stabilized link system applied to a free-electron laser device in this invention; Figure 4 This is an application environment diagram of the control method based on the radio frequency phase-stable link system applied to a free-electron laser device in this invention; Figure 5 This is a schematic diagram of the terminal in this invention.

[0019] Among them, 10, double-layer constant temperature pipeline; 11, double-layer structure; 111, outer insulation layer; 112, outer pipe; 113, inner insulation layer; 114, inner pipe; 12, inner layer pipe; 13, outer layer pipe; 20, first temperature control unit; 30, second temperature control unit; 40, first temperature measuring unit; 50, second temperature measuring unit; 60, control module; 61, PID controller; 62, display screen; 102, terminal; 104, server. Detailed Implementation

[0020] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the accompanying drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings, but include changes in shape that may occur during manufacturing. The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all contents, operations, or steps, nor do they necessarily need to be performed in the order described. For example, some operations or steps may be broken down, combined, or partially merged, so the actual order of execution may change depending on the specific circumstances.

[0022] As used herein, the term “and / or” includes any one of the relevant items listed and any combination of any two or more items.

[0023] Although terms such as “first,” “second,” and “third” may be used herein to describe individual components, assemblies, regions, layers, or parts, these components, assemblies, regions, layers, or parts are not limited by these terms. Rather, these terms are used only to distinguish one component, assembly, region, layer, or part from another. Therefore, without departing from the teachings of the examples described herein, the first component, assembly, region, layer, or part referred to as the second component, assembly, region, layer, or part may also be referred to as the second component, assembly, region, layer, or part.

[0024] For ease of description, spatial relational terms such as “above,” “upper,” “below,” and “lower” are used herein to describe the relationship between one element and another, as shown in the accompanying drawings. Such spatial relational terms are intended to encompass not only the orientation depicted in the drawings but also different orientations of the device during use or operation. For example, if the device in the drawings is flipped, an element described as being “above” or “upper” relative to another element will subsequently be “below” or “lower” relative to that other element. Therefore, the term “above” includes both “above” and “below” orientations depending on the spatial orientation of the device. The device may also be positioned in other ways, and the spatial relational terms used herein will be interpreted accordingly.

[0025] The terminology used herein is for the purpose of describing various examples only and is not intended to limit this disclosure. Unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. The terms “comprising,” “including,” and “having” enumerate the stated features, quantities, operations, components, elements, and / or combinations thereof, but do not exclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0026] See Figure 1 and Figure 2One embodiment of this invention discloses a radio frequency (RF) phase-stabilized link system for a free-electron laser device, comprising a double-layer constant-temperature pipeline 10, several first temperature control units 20, several second temperature control units 30, several first temperature measuring units 40, several second temperature measuring units 50, and a control module 60. The double-layer constant-temperature pipeline 10 is composed of several sequentially connected double-layer structures 11 for arranging RF cables, enabling the RF cables to transmit RF signals over long distances. The RF cables, arranged along a preset route, can reach lengths of several hundred meters to several kilometers. Furthermore, at the end of the double-layer constant-temperature pipeline 10, it can be directly connected to the constant-temperature cabinet of the terminal equipment, keeping the environment inside the pipeline in a closed state and reducing the influence of the surrounding environment.

[0027] like Figure 2 As shown, the double-layer thermostatic pipeline 10 has an inner layer pipeline 12 and an outer layer pipeline 13. The inner layer pipeline 12 is used to arrange radio frequency cables, and the outer layer pipeline 13 surrounds the inner layer pipeline 12. A plurality of first temperature control units 20 and a plurality of second temperature control units 30 are respectively disposed in the inner layer pipeline 12 and the outer layer pipeline 13 for raising or lowering the temperature; a plurality of first temperature measuring units 40 and a plurality of second temperature measuring units 50 are respectively disposed in the inner layer pipeline 12 and the outer layer pipeline 13 for collecting temperature data.

[0028] In the radio frequency stable link system disclosed in this embodiment, a first temperature control unit 20 and a first temperature measurement unit 40 are set in the inner layer pipe 12, and a second temperature control unit 30 and a second temperature measurement unit 50 are set in the outer layer pipe 13, thereby achieving a dual temperature control effect for the inner layer pipe 12 and the outer layer pipe 13.

[0029] Specifically, the control module 60 is electrically connected to a plurality of first temperature control units 20, a plurality of second temperature control units 30, a plurality of first temperature measuring units 40, and a plurality of second temperature measuring units 50; for example... Figure 2 As shown, each of the double-layer structures 11 is provided with at least one first temperature control unit 20, one second temperature control unit 30, one first temperature measuring unit 40 and one second temperature measuring unit 50.

[0030] In this embodiment, the temperature control operation is based on the double-layer structure 11. The temperature of the internal space of each double-layer structure 11 is detected separately by the first temperature measuring unit 40 and the second temperature measuring unit 50, and the output power of the first temperature control unit 20 and the second temperature control unit 30 in each double-layer structure 11 is controlled separately. This can realize a segmented temperature control method, improve control accuracy, and enhance the temperature uniformity of the entire double-layer constant temperature pipeline 10, thereby stabilizing the electrical characteristics of the RF cable, stabilizing the signal phase, and reducing the drift of the RF phase-stable link.

[0031] Moreover, the double-layer structure 11 in this embodiment can be freely assembled, so the length of the double-layer constant temperature pipeline 10 can be adjusted according to needs, making it highly flexible in use.

[0032] like Figure 2 As shown, in another embodiment of this application, the double-layer structure 11 includes an outer insulation layer 111, an outer tube 112, an inner insulation layer 113, and an inner tube 114 nested from the outside in. A first temperature control unit 20 is disposed between the inner insulation layer 113 and the inner tube 114. A second temperature control unit 30 is disposed between the outer insulation layer 111 and the outer tube 112. The inner cavity of the inner tube 114 is the inner layer pipe 12. The outer layer pipe 13 is formed between the outer tube 112 and the inner insulation layer 113.

[0033] The inner tube 114 and outer tube 112 disclosed in this embodiment can be made of metal materials with high structural strength, good stability, and high temperature resistance, such as stainless steel and aluminum alloy. The inner cavity of the inner tube 114 is used to arrange radio frequency cables, serving a protective and isolation function. The outer tube 112 has a larger diameter than the inner tube 114, forming a gaseous environment within the outer pipe 13 between the outer tube 112 and the inner tube 114, thereby providing a certain degree of heat insulation, reducing heat conduction, and stabilizing the environment in which the inner tube 114 is located. A connecting bracket can be provided between the inner tube 114 and the outer tube 112 to support the inner tube 114 suspended within the inner cavity of the outer tube 112.

[0034] Specifically, the outer insulation layer 111 and the inner insulation layer 113 can be made of sponge material to achieve the effect of heat insulation and prevent heat transfer between layers.

[0035] Specifically, the first temperature control unit 20 disclosed in this embodiment is a semiconductor cooling chip or a thin-film heating chip; similarly, the second temperature control unit 30 can also be configured as a semiconductor cooling chip or a thin-film heating chip. Both semiconductor cooling chips and thin-film heating chips control temperature through electric heating, thus unlike water-cooled or air-cooled structures, they have no vibration, no leakage risk, high temperature control accuracy, and uniform temperature distribution. The temperature across the entire semiconductor cooling chip or thin-film heating chip is uniform, allowing for even temperature control within the inner pipe 12 or outer pipe 13, reducing heat concentration and uneven temperature control. Furthermore, compared to traditional water-cooled or air-cooled structures, electrically controlled constant temperature structures are smaller, simpler in structure, and easier to maintain.

[0036] In addition, in this embodiment, the first temperature control unit 20 is set against the inner tube 114 and the second temperature control unit 30 is set against the outer tube 112, so heat can be transferred quickly to improve temperature control efficiency.

[0037] In this embodiment, the outer insulation layer 111, the second temperature control unit 30, and the outer tube 112 are integrated to form an outer temperature control component, reducing the impact of room temperature fluctuations and controlling the temperature fluctuation of the space enclosed by the outer tube 112 within a range of 0.1℃, thus providing a stable environment for the inner temperature control component. The inner insulation layer 113, the first temperature control unit 20, and the inner tube 114 are integrated to form an inner temperature control component, further isolating the surrounding environment from the temperature of the space inside the inner tube 114, ensuring that the temperature fluctuation in the environment where the RF cable is located is stabilized within a range of 0.05℃, achieving a good constant temperature effect.

[0038] Specifically, as another embodiment of this application, the first temperature measuring unit 40 is disclosed as a resistance temperature sensor (RTS) or a thermocouple temperature sensor; similarly, the second temperature measuring unit 50 can also be configured as an RTS or a thermocouple temperature sensor. Both RTS and thermocouple temperature sensors can quickly and accurately detect real-time temperature data. The first temperature measuring unit 40 is disposed on the inner wall of the inner pipe 12; the second temperature measuring unit 50 is disposed on the inner wall of the outer pipe 13. By directly contacting the environment inside the inner pipe 12 or the outer pipe 13, the accuracy of the detection results can be improved.

[0039] For example Figure 1 As shown, in another embodiment of this application, the control module 60 includes a plurality of PID controllers 61 and a display screen 62. The PID controllers 61 are electrically connected to the first temperature control unit 20 and the first temperature measuring unit 40 in one of the double-layer structures 11, or the PID controllers 61 are electrically connected to the second temperature control unit 30 and the second temperature measuring unit 50 in one of the double-layer structures 11. The display screen 62 is connected to the PID controllers 61 and is used to display the temperature data collected by the first temperature measuring unit 40 and the second temperature measuring unit 50.

[0040] The PID controller 61 disclosed in this embodiment, namely a proportional-integral-derivative controller, is a widely used feedback loop component, mainly suitable for systems with basic linearity and dynamic characteristics that do not change over time. This controller compares the collected data with a reference value, and then uses this difference to calculate a new input value. The purpose of this new input value is to allow the system data to reach or remain at the reference value. In this embodiment, the PID controller 61 is used to compare the temperature data collected by the first temperature measuring unit 40 with preset temperature data, then calculate the temperature difference, and input this value to the first temperature control unit 20 to adjust the output power of the first temperature control unit 20, ultimately achieving constant temperature control within the inner pipe 12. Similarly, constant temperature control within the outer pipe 13 can be achieved based on the PID controller 61, the second temperature measuring unit 50, and the second temperature control unit 30.

[0041] Specifically, the display screen 62 disclosed in this embodiment can intuitively display the temperature data collected by the first temperature measuring unit 40 and the second temperature measuring unit 50, so as to provide intuitive feedback to the user.

[0042] In this embodiment, multiple PID controllers 61 are provided. Preferably, one PID controller 61 corresponds to one double-layer structure 11. Only one display screen 62 is required. The display screen 62 communicates with each PID controller 61 to obtain and display the temperature data of all double-layer structures 11, so that the user can quickly compare and observe, thereby adjusting the location of temperature anomalies.

[0043] Specifically, as another embodiment of this application, the radio frequency phase-stable link system further includes several third temperature measurement units and several fourth temperature measurement units. The third temperature measurement units extend into the center of the inner pipe 12 and are used to collect ambient temperature data inside the inner pipe 12. The fourth temperature measurement units extend into the center of the outer pipe 13 and are used to collect ambient temperature data inside the outer pipe 13.

[0044] The third and fourth temperature measuring units disclosed in this embodiment can adopt the same structure as the first temperature measuring unit 40 or the second temperature measuring unit 50. The third and fourth temperature measuring units are set up to independently record the temperature inside the inner pipe 12 and the outer pipe 13, so as to continuously collect temperature data inside the double-layer constant temperature pipeline 10, truly reflecting the constant temperature performance inside the double-layer constant temperature pipeline 10, and can be used as a reference during temperature adjustment or for backup. In addition, the third and fourth temperature measuring units disclosed in this embodiment are also connected to the display screen 62 to intuitively display the temperature data of the third and fourth temperature measuring units.

[0045] like Figure 3 As shown, as another embodiment of this application, this application also discloses a control method for a radio frequency phase-stable link system, used in a radio frequency phase-stable link system applied to a free-electron laser device as described in any of the preceding claims; wherein, it includes: Step S10: Collect inner layer temperature data through the first temperature measuring unit 40 and outer layer temperature data through the second temperature measuring unit 50; Step S20: Compare the inner layer temperature data with the inner layer preset temperature value. If the inner layer temperature data is lower than the inner layer preset temperature value, generate a control command to increase the output power of the first temperature control unit 20. If the inner layer temperature data is higher than the inner layer preset temperature value, generate a control command to temporarily shut down the first temperature control unit 20 or drive the first temperature control unit 20 to cool. Step S30: Compare the outer layer temperature data with the outer layer preset temperature value. If the outer layer temperature data is lower than the outer layer preset temperature value, generate a control command to increase the output power of the second temperature control unit 30. If the outer layer temperature data is higher than the outer layer preset temperature value, generate a control command to temporarily shut down the second temperature control unit 30 or drive the second temperature control unit 30 to cool.

[0046] In this embodiment, by independently controlling the temperature of the inner pipe 12 and the outer pipe 13 of each double-layer structure 11, the temperature changes within the double-layer thermostatic pipeline 10 can be precisely managed, thereby improving the accuracy of temperature control and enhancing the stability of the entire system.

[0047] Specifically, as another embodiment of this application, the inner layer preset temperature value is disclosed to be 1-2°C higher than the outer layer preset temperature value. The control method of the radio frequency phase-stable link system disclosed in this embodiment adopts a dual-layer temperature control approach, enhancing the temperature control and constant temperature effect. In one implementation of this embodiment, the outer layer preset temperature value can be set to be 2-4°C higher than the ambient temperature, and the temperature within the outer layer pipe 13 can be stably controlled within a range of 0.1°C; the inner layer preset temperature value can be set to be 1-2°C higher than the outer layer preset temperature value, and the temperature within the inner layer pipe 12 can be stably controlled within a range of 0.05°C.

[0048] In summary, the control method of the radio frequency phase-stable link system disclosed in this embodiment provides a stable constant temperature environment by precisely controlling the working temperature inside the double-layer constant temperature pipeline 10, which is beneficial to maintaining the stability of the electrical characteristics of the radio frequency cable, thereby stabilizing the phase of the transmitted signal and reducing the drift of the radio frequency phase-stable link.

[0049] In practical operation, by using the radio frequency phase-stable link system and the control method of the radio frequency phase-stable link system disclosed in this embodiment, the drift of a 25-meter radio frequency phase-stable link can be controlled to be less than 30 femtoseconds (fs).

[0050] The control method for a radio frequency phase-stable link system provided in this embodiment of the invention can be applied to, for example... Figure 4 In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store the data that server 104 needs to process. The data storage system can be integrated onto server 104, or it can be located in the cloud or on another network server. The control method of the RF phase-stable link system can be executed by terminal 102 or server 104, or it can be executed collaboratively by terminal 102 and server 104. Of course, the control method of the RF phase-stable link system in this embodiment can also be implemented based on the RF phase-stable link system itself.

[0051] The terminal 102 can be a smartphone, tablet, laptop, desktop computer, smart speaker, smartwatch, IoT device, or portable wearable device. IoT devices can include smart speakers, smart TVs, smart air conditioners, and smart in-vehicle devices, etc. Portable wearable devices can include smartwatches, smart bracelets, and head-mounted devices, etc.

[0052] Server 104 can be an independent physical server or a service node in a blockchain system, where the service nodes form a peer-to-peer network.

[0053] In addition, server 104 can also be a server cluster consisting of multiple physical servers, which can be a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDN), and big data and artificial intelligence platforms.

[0054] Terminal 102 and server 104 can be connected via Bluetooth, USB (Universal Serial Bus) or network communication, and the present invention does not limit this connection.

[0055] In some embodiments, a terminal is provided, the internal structure of which can be as follows: Figure 5 As shown, the terminal includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies.

[0056] When the computer program is executed by the processor, it implements a control method for a radio frequency stable link system. The display unit of the terminal is used to form a visually visible image, and can be a display screen 62, a projection device, or a virtual reality imaging device. The display screen 62 can be a liquid crystal display screen 62 or an electronic ink display screen 62. The input device of the terminal can be a touch layer covering the display screen 62, or buttons, a trackball, or a touchpad set on the terminal shell, or an external keyboard, touchpad, or mouse, etc.

[0057] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present invention and does not constitute a limitation on the terminal to which the present invention is applied. A specific terminal may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0058] It should be noted that if the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this invention are all information and data authorized by the user or fully authorized by all parties, the collection, use and processing of the relevant data shall comply with relevant regulations.

[0059] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided by this invention can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided by this invention may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided by this invention may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0060] It should be understood that various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. If implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (FPGAs), field-programmable gate arrays (FPGAs), etc.

[0061] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0062] As another embodiment of this application, a free-electron laser device is disclosed, which includes a radio frequency phase-stabilized link system for a free-electron laser device as described in any of the preceding claims.

[0063] It should be noted that the double-layer constant temperature pipeline 10 disclosed in this embodiment is a double-layer temperature control structure, but the scope of protection of this invention is not limited to this. In the actual manufacturing process, considering factors such as cost and operation difficulty, a multi-layer structure such as three or four layers can be set, which can also achieve the technical effect disclosed in this application. As an equivalent substitution of the concept of this invention, it should also be within the scope of protection of this application.

[0064] In summary, this application discloses a radio frequency (RF) phase-stabilized link system and control method for a free-electron laser device. The RF phase-stabilized link system includes a double-layer thermostatic pipeline 10, several first temperature control units 20, several second temperature control units 30, several first temperature measuring units 40, several second temperature measuring units 50, and a control module 60. The double-layer thermostatic pipeline 10 is composed of several sequentially connected double-layer structures 11 for connecting to the thermostatic cabinet of the terminal equipment. An inner pipe 12 and an outer pipe 13 are formed within the double-layer thermostatic pipeline 10. The inner pipe 12 is used to arrange RF cables, and the outer pipe 13 surrounds the inner pipe 12. Several first temperature control units... Unit 20 and several second temperature control units 30 are respectively disposed in the inner layer pipe 12 and the outer layer pipe 13 for raising or lowering the temperature; several first temperature measuring units 40 and several second temperature measuring units 50 are respectively disposed in the inner layer pipe 12 and the outer layer pipe 13 for collecting temperature data; the control module 60 is electrically connected to several first temperature control units 20, several second temperature control units 30, several first temperature measuring units 40 and several second temperature measuring units 50; each of the double-layer structures 11 is provided with at least one first temperature control unit 20, one second temperature control unit 30, one first temperature measuring unit 40 and one second temperature measuring unit 50.

[0065] In the radio frequency phase-stable link system disclosed in this embodiment, a segmented temperature control method can be implemented, which improves control accuracy and enhances the temperature uniformity of the entire double-layer constant temperature pipeline 10, thereby stabilizing the electrical characteristics of the radio frequency cable, stabilizing the phase of the signal, and reducing the drift of the radio frequency phase-stable link.

[0066] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0067] It should be noted that this invention uses the radio frequency phase-stabilized link system and control method applied to a free-electron laser device as an example to introduce the specific structure and working principle of the invention. However, the application of this invention is not limited to the radio frequency phase-stabilized link system and control method applied to a free-electron laser device, and can also be applied to the production and use of other similar workpieces.

[0068] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0069] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A radio frequency phase-stabilized link system for a free-electron laser device, characterized in that, include: The double-layer constant temperature pipeline is composed of several double-layer structures connected in sequence, and is used to connect to the constant temperature cabinet of the terminal equipment; the double-layer constant temperature pipeline has an inner layer pipeline and an outer layer pipeline, the inner layer pipeline is used to lay radio frequency cables, and the outer layer pipeline surrounds the outer perimeter of the inner layer pipeline. A plurality of first temperature control units and a plurality of second temperature control units are respectively disposed in the inner layer pipe and the outer layer pipe, for raising or lowering the temperature; A plurality of first temperature measuring units and a plurality of second temperature measuring units are respectively disposed in the inner layer pipe and the outer layer pipe for collecting temperature data; The control module is electrically connected to a plurality of the first temperature control units, a plurality of the second temperature control units, a plurality of the first temperature measuring units, and a plurality of the second temperature measuring units. Each of the aforementioned double-layer structures is provided with at least one first temperature control unit, one second temperature control unit, one first temperature measuring unit, and one second temperature measuring unit.

2. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 1, characterized in that, The double-layer structure includes an outer insulation layer, an outer tube, an inner insulation layer, and an inner tube, which are nested from the outside in. The first temperature control unit is disposed between the inner insulation layer and the inner tube; the second temperature control unit is disposed between the outer insulation layer and the outer tube; the inner cavity of the inner tube is the inner layer pipe; and the outer layer pipe is formed between the outer tube and the inner insulation layer.

3. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 2, characterized in that, The first temperature measuring unit is located on the inner wall of the inner pipe; the second temperature measuring unit is located on the inner wall of the outer pipe.

4. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 3, characterized in that, The first temperature measuring unit is a thermistor temperature sensor or a thermocouple temperature sensor; and / or, the second temperature measuring unit is a thermistor temperature sensor or a thermocouple temperature sensor.

5. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 1, characterized in that, The first temperature control unit is a semiconductor cooling chip or a thin-film heating chip; and / or, the second temperature control unit is a semiconductor cooling chip or a thin-film heating chip.

6. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 1, characterized in that, The control module includes several PID controllers and a display screen. The PID controllers are electrically connected to the first temperature control unit and the first temperature measuring unit in the dual-layer structure, or the PID controllers are electrically connected to the second temperature control unit and the second temperature measuring unit in the dual-layer structure. The display screen is connected to the PID controllers and is used to display the temperature data collected by the first temperature measuring unit and the second temperature measuring unit.

7. The radio frequency phase-stabilized link system for a free-electron laser device according to claim 1, characterized in that, The radio frequency phase-stable link system also includes several third temperature measurement units and several fourth temperature measurement units. The third temperature measurement units extend into the center of the inner pipe and are used to collect the ambient temperature data inside the inner pipe. The fourth temperature measurement units extend into the center of the outer pipe and are used to collect the ambient temperature data inside the outer pipe.

8. A control method for a radio frequency (RF) phase-stable link system, used in the RF phase-stable link system applied to a free-electron laser device as described in any one of claims 1 to 7; characterized in that, include: The inner layer temperature data is collected through the first temperature measuring unit, and the outer layer temperature data is collected through the second temperature measuring unit. The inner layer temperature data is compared with the inner layer preset temperature value. If the inner layer temperature data is lower than the inner layer preset temperature value, a control command is generated to increase the output power of the first temperature control unit. If the inner layer temperature data is higher than the inner layer preset temperature value, a control command is generated to temporarily shut down the first temperature control unit or drive the first temperature control unit to cool. The outer layer temperature data is compared with the preset outer layer temperature value. If the outer layer temperature data is lower than the preset outer layer temperature value, a control command is generated to increase the output power of the second temperature control unit. If the outer layer temperature data is higher than the preset outer layer temperature value, a control command is generated to temporarily shut down the second temperature control unit or drive the second temperature control unit to cool.

9. The control method for a radio frequency phase-stable link system according to claim 8, characterized in that, The preset temperature value of the inner layer is 1-2℃ higher than the preset temperature value of the outer layer.

10. A free-electron laser device, characterized in that, Includes the radio frequency phase-stabilized link system for free-electron laser devices as described in any one of claims 1 to 7.

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