Cavity radio frequency voltage automatic recovery system and recovery method

Abstract

This disclosure provides an automatic cavity radio frequency voltage recovery system and method. The automatic cavity radio frequency voltage recovery system includes a low-level device, a power source, a high-frequency cavity, and a programmable control module. The low-level device is used to control the amplitude stabilization, phase stabilization, and frequency tuning of the radio frequency signal, monitor the pulsed and continuous radio frequency voltages of the high-frequency cavity, monitor the normal signal of the interlocking condition, and switch the output mode of the radio frequency signal. The power source is used to amplify the radio frequency signal input from the low-level device and feed it into the high-frequency cavity, and provide a normal power source signal. The high-frequency cavity is used to resonate the radio frequency power fed by the power source, establish a radio frequency electric field, and adjust the frequency of the high-frequency cavity through a fine-tuning loop. The programmable control module is used to restore the radio frequency voltage of the high-frequency cavity based on the control of the fine-tuning loop by the low-level device after the radio frequency voltage of the high-frequency cavity drops to zero. This automatic cavity radio frequency voltage recovery system and method can quickly achieve automatic recovery of the cavity radio frequency voltage.

Description

Technical Field

[0001] This disclosure relates to the field of radio frequency technology, and in particular to an automatic recovery system and method for cavity radio frequency voltage. Background Technology

[0002] In medical heavy ion accelerators, the cavity voltage of the cyclotron accelerator often drops to zero due to fluctuations in the environment such as vacuum, water, and temperature. This causes the beam to be lost because it cannot be accelerated, resulting in the accelerator failing to produce a beam. The current standard method for handling this situation is to manually initialize the low-level control device locally, then manually operate the amplitude stabilization and frequency tuning devices to establish a pulsed radio frequency voltage in the cavity. After stabilization, it is switched to a continuous radio frequency voltage, and finally, a closed-loop remote control is established before normal operation. Because manual operation often cannot detect and resolve this issue promptly, and the manual operation steps are quite complex, a single drop in radio frequency voltage to zero can often take several minutes or even tens of minutes to recover. Furthermore, there is a risk of equipment damage due to the operator's lack of skill or understanding of the system. Summary of the Invention

[0003] To address the aforementioned technical problems, this disclosure provides an automatic cavity radio frequency voltage recovery system and method, which at least partially solves the above-mentioned technical problems.

[0004] Based on this, the first aspect of this disclosure provides an automatic recovery system for cavity radio frequency voltage, including a low-level device, a power source, a high-frequency cavity, and a programmable control module, wherein: the low-level device is used to control the amplitude stabilization, phase stabilization, and frequency tuning of the radio frequency signal, monitor the pulse radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity, monitor the normal signal of the interlocking condition, and switch the output mode of the radio frequency signal; the power source is used to amplify the radio frequency signal input to the low-level device and feed it into the high-frequency cavity, and provide a normal power source signal; the high-frequency cavity is used to resonate the radio frequency power fed by the power source, establish a radio frequency electric field, and adjust the frequency of the high-frequency cavity through a fine-tuning loop; the programmable control module is used to restore the radio frequency voltage of the high-frequency cavity based on the control of the fine-tuning loop by the low-level device after the radio frequency voltage of the high-frequency cavity drops to zero.

[0005] According to embodiments of this disclosure, amplitude stabilization includes the ability to adjust the RF signal output to an on or off state, the RF signal output amplitude is adjustable, and the ability to switch between open-loop mode control and closed-loop mode control; phase stabilization includes the ability to switch between open-loop mode control and closed-loop mode control; frequency tuning includes the ability to switch between open-loop mode control and closed-loop mode control.

[0006] According to an embodiment of this disclosure, the fine-tuning ring is a ring structure made of copper tubing, installed at the bottom of the high-frequency cavity, and the frequency of the high-frequency cavity is adjusted by adjusting the magnetic flux of the ring structure.

[0007] According to an embodiment of this disclosure, the output modes include pulse mode and continuous mode. In pulse mode, the low-level device is used to output a pulse radio frequency signal, and in continuous mode, the low-level device is used to output a continuous radio frequency signal.

[0008] The second aspect of this disclosure provides a method for restoring radio frequency (RF) voltage in a cavity RF voltage automatic recovery system, comprising: monitoring the cavity RF voltage of the cavity RF voltage automatic recovery system; after the cavity RF voltage drops to zero, monitoring the interlocking condition normal signal and the power source normal signal; and when both the interlocking condition normal signal and the power source normal signal are normal, tuning the high-frequency cavity through a low-level device and a fine-tuning loop until the pulse RF voltage and continuous RF voltage of the high-frequency cavity meet preset conditions, thereby completing the RF voltage recovery.

[0009] According to the implementation of this disclosure, tuning the high-frequency cavity using a fine-tuning ring specifically includes: controlling the fine-tuning ring to rotate along a first direction and monitoring the changing trend of the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity; when the changing trend of the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity is a continuous decrease as the fine-tuning ring rotates along the first direction, controlling the fine-tuning ring to rotate along a second direction; wherein the first direction and the second direction are opposite; controlling the fine-tuning ring to rotate along the second direction until the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity changes from an upward trend to a downward trend, and then controlling the fine-tuning ring to rotate along the first direction to the position corresponding to the previously monitored maximum value of the pulsed radio frequency voltage or the maximum value of the continuous radio frequency voltage of the high-frequency cavity.

[0010] According to the implementation of this disclosure, the high-frequency cavity is tuned using a low-level device and a fine-tuning loop until the pulsed RF voltage and continuous RF voltage of the high-frequency cavity meet preset conditions. Specifically, this includes: controlling the frequency tuning of the low-level device to open-loop mode via a programmable control module, with the amplitude output of the RF signal being zero and the output mode of the RF signal being pulse mode; controlling the RF signal output of the low-level device to be on via the programmable control module, increasing the amplitude of the RF signal by a preset step amplitude; monitoring the pulsed RF voltage, and tuning the high-frequency cavity using the low-level device and fine-tuning loop according to the magnitude of the pulsed RF voltage until the pulsed RF voltage reaches a first target value; switching the output mode of the RF signal of the low-level device from pulse mode to continuous mode via the programmable control module; monitoring the continuous RF voltage, and tuning the high-frequency cavity using the low-level device and fine-tuning loop according to the magnitude of the continuous RF voltage until the continuous RF voltage reaches a second target value.

[0011] According to the implementation of this disclosure, the pulse radio frequency voltage is monitored, and the high-frequency cavity is tuned by a low-level device and a fine-tuning ring according to the magnitude of the pulse radio frequency voltage until the pulse radio frequency voltage reaches a first target value. Specifically, this includes: determining whether the pulse radio frequency voltage is zero; and after the pulse radio frequency voltage is not zero, tuning the high-frequency cavity once by a low-level device and a fine-tuning ring for each step increase in amplitude until the pulse radio frequency voltage reaches the first target value.

[0012] According to the implementation of this disclosure, continuous radio frequency voltage is monitored, and the high-frequency cavity is tuned using a low-level device and a fine-tuning loop based on the magnitude of the continuous radio frequency voltage until the continuous radio frequency voltage reaches a second target value. Specifically, this includes: determining whether the continuous radio frequency voltage exceeds the second target value; if the pulse radio frequency voltage exceeds the second target value, reducing the amplitude of the radio frequency signal by a preset step amplitude until the pulse radio frequency voltage is less than the second target value and the difference between the pulse radio frequency voltage and the second target value reaches a preset value, then tuning the high-frequency cavity using a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value; if the pulse radio frequency voltage does not exceed the second target value, tuning the high-frequency cavity using a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value.

[0013] According to the implementation of this disclosure, after the pulsed radio frequency voltage reaches the first target value and the continuous radio frequency voltage reaches the second target value, the frequency of the low-level device is controlled to be tuned to a closed-loop mode by the programmable control module, and then the amplitude stabilization and phase stabilization are controlled to be closed-loop mode in sequence.

[0014] The automatic cavity radio frequency voltage recovery system and method provided according to the embodiments of this disclosure have at least the following beneficial effects:

[0015] The cavity radio frequency voltage automatic recovery system provided in this embodiment automatically monitors the pulse radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity, the power source status signal, and the interlocking condition signal in real time by setting a programmable control module after the radio frequency voltage of the high-frequency cavity drops to zero. This allows for timely control of the fine-tuning loop to restore the radio frequency voltage of the high-frequency cavity based on the low-level device, achieving real-time and rapid response for automatic recovery of radio frequency voltage after it drops to zero. This avoids the inefficiency of manual operation and reduces the risk of equipment damage.

[0016] The cavity radio frequency voltage automatic recovery method provided in this disclosure is based on a configured cavity radio frequency voltage automatic recovery system and sets reasonable tuning logic to better achieve cavity radio frequency voltage automatic recovery. Attached Figure Description

[0017] The above and other objects, features and advantages of this disclosure will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 The schematic diagram illustrates the structural block diagram of the cavity radio frequency voltage automatic recovery system provided in the embodiments of this disclosure.

[0019] Figure 2 The flowchart illustrating the automatic recovery method for cavity radio frequency voltage provided in an embodiment of this disclosure is shown schematically.

[0020] Figure 3 A flowchart illustrating a method for tuning a high-frequency cavity according to an embodiment of the present disclosure is shown.

[0021] Figure 4 The schematic diagram illustrates the specific flowchart of operation S203 provided in the embodiments of this disclosure. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0023] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, or components.

[0024] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0025] In the description of this disclosure, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the subsystem 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 disclosure.

[0026] Throughout the accompanying drawings, identical elements are represented by the same or similar reference numerals. Conventional structures or constructions have been omitted where they may cause confusion in understanding this disclosure. Furthermore, the shapes, dimensions, and positional relationships of the components in the drawings do not reflect actual size, scale, or actual positional relationships. Additionally, any reference numerals placed between parentheses in the claims should not be construed as limiting the claims.

[0027] Similarly, to simplify this disclosure and aid in understanding one or more of the various aspects of the disclosure, in the above description of exemplary embodiments of the present disclosure, various features of the present disclosure are sometimes grouped together in a single embodiment, figure, or description thereof. The use of terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present disclosure. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this disclosure, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] Figure 1 The schematic diagram illustrates the structural block diagram of the cavity radio frequency voltage automatic recovery system provided in the embodiments of this disclosure.

[0030] like Figure 1 As shown, the cavity radio frequency voltage automatic recovery system may include, for example, a low-level device, a power source, a high-frequency cavity, and a programmable control module. Wherein:

[0031] The low-level device is used to control the amplitude stability, phase stability, and frequency tuning of the radio frequency signal, monitor the pulse radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity, monitor the interlocking condition normal signal, and switch the output mode of the radio frequency signal.

[0032] In this embodiment, amplitude stabilization includes the ability to adjust the RF signal output to an ON or OFF state, the RF signal output amplitude is adjustable, and the ability to switch between open-loop and closed-loop control modes. Phase stabilization includes the ability to switch between open-loop and closed-loop control modes. Frequency tuning includes the ability to switch between open-loop and closed-loop control modes.

[0033] The output modes of the radio frequency signal may include, for example, pulse mode and continuous mode. In pulse mode, a low-level device is used to output a pulse radio frequency signal, and in continuous mode, a low-level device is used to output a continuous radio frequency signal.

[0034] A power source is used to amplify the radio frequency signal input from a low-level device and feed it into the high-frequency cavity, while also providing a normal power source signal.

[0035] A high-frequency cavity is used to resonate the radio frequency power fed into the power source, establish a radio frequency electric field, and adjust the frequency of the high-frequency cavity through a fine-tuning loop.

[0036] In this embodiment, the fine-tuning ring is a ring structure made of copper tubing, installed at the bottom of the high-frequency cavity. The frequency of the high-frequency cavity is adjusted by regulating the magnetic flux of the ring structure. Specifically, the frequency of the high-frequency cavity can be adjusted by controlling the motor connected to the fine-tuning ring to rotate it through frequency tuning of a low-level device, thereby changing the magnetic flux of the ring structure and thus adjusting the cavity frequency.

[0037] The programmable control module is used to restore the RF voltage of the high-frequency cavity by controlling the fine-tuning loop based on the low-level device after the RF voltage of the high-frequency cavity drops to zero.

[0038] In this embodiment, the programmable control module adjusts the cavity frequency tuning by remotely controlling the frequency tuning system of the low-level device, and determines whether tuning has been completed by monitoring the changing trend of the maximum value of the pulse RF voltage Vp or the continuous pulse RF voltage Vc. The tuning method is as follows: the programmable control module first controls the fine-tuning ring to rotate in a certain direction, such as forward rotation, and monitors the changing trend of Vp or Vc. If Vp or Vc continuously decreases as the fine-tuning ring rotates, the fine-tuning ring is controlled to reverse until Vp or Vc changes from an upward trend to a downward trend. Then, the fine-tuning ring is rotated forward to the previously monitored maximum value of Vp or Vc, and the tuning is completed.

[0039] According to embodiments of this disclosure, after the radio frequency voltage of the high-frequency cavity drops to zero, the cavity radio frequency voltage automatic recovery system automatically monitors the pulse radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity, the power source's normal signal, and the interlocking condition normal signal in real time through a programmable control module, so as to promptly control the fine-tuning ring to restore the radio frequency voltage of the high-frequency cavity according to the low-level device.

[0040] Based on the above-described cavity radio frequency voltage automatic recovery system, this disclosure also provides a cavity radio frequency voltage automatic recovery method.

[0041] Figure 2 The flowchart illustrating the automatic recovery method for cavity radio frequency voltage provided in an embodiment of this disclosure is shown schematically.

[0042] like Figure 2 As shown, the automatic recovery method for the cavity radio frequency voltage may include, for example, operations S201 to S203.

[0043] In operation S201, the cavity radio frequency voltage of the monitoring cavity radio frequency voltage automatic recovery system is restored.

[0044] In this embodiment of the disclosure, a low-level device is used to monitor the pulse radio frequency voltage Vp or the continuous pulse radio frequency voltage Vc and transmit it to the programmable control module in real time.

[0045] When operating S202, after the cavity RF voltage drops to zero, monitor the interlock condition normal signal and the power source normal signal.

[0046] In this embodiment, the programmable control module determines whether the monitored interlocking condition normal signal Si and power source normal signal Sp are both normal. If either one is abnormal or both are abnormal, an alarm signal is issued to indicate that the cavity radio frequency voltage automatic recovery system is malfunctioning. If both are normal, operation S203 is executed.

[0047] In operation S203, the high-frequency cavity is tuned through the low-level device and the fine-tuning ring until the pulse RF voltage and continuous RF voltage of the high-frequency cavity meet the preset conditions, thus completing the RF voltage recovery.

[0048] Figure 3 A flowchart illustrating a method for tuning a high-frequency cavity according to an embodiment of the present disclosure is shown.

[0049] like Figure 3 As shown, the method for tuning the high-frequency cavity may include, for example, operations S301 to S303.

[0050] When operating S301, the fine-tuning ring is controlled to rotate along the first direction to monitor the changing trend of the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity.

[0051] In the embodiments of this disclosure, the first direction may be, for example, a positive direction or a negative direction, and the specific rotation direction may be determined according to the inherent configuration of the fine-tuning ring, which is not limited in this disclosure.

[0052] When operating S302, if the trend of the pulsed RF voltage or continuous RF voltage of the high-frequency cavity is that it continuously decreases as the fine-tuning ring rotates along the first direction, the fine-tuning ring is controlled to rotate along the second direction.

[0053] In this embodiment of the disclosure, the first direction and the second direction are opposite. For example, if the first direction is positive, then the second direction is negative; if the first direction is negative, then the second direction is positive.

[0054] In operation S303, the fine-tuning ring is controlled to rotate along the second direction until the pulse radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity changes from an upward trend to a downward trend. Then, the fine-tuning ring is controlled to rotate along the first direction to the position corresponding to the previously monitored maximum value of the pulse radio frequency voltage or the maximum value of the continuous radio frequency voltage of the high-frequency cavity.

[0055] In this embodiment of the disclosure, when the control ring is switched from the first direction to the second direction, the trend of the pulsed radio frequency voltage or the continuous radio frequency voltage will change. It will no longer continuously decrease, and the pulsed radio frequency voltage or the continuous radio frequency voltage will gradually increase. However, after reaching a certain value, the pulsed radio frequency voltage or the continuous radio frequency voltage will no longer increase and will show a decreasing trend. After the pulsed radio frequency voltage or the continuous radio frequency voltage changes from an increasing trend to a decreasing trend, the position corresponding to the previously monitored maximum value of the pulsed radio frequency voltage or the maximum value of the continuous radio frequency voltage of the high-frequency cavity can be reached when the control ring is switched from the second direction to the first direction.

[0056] Figure 4 The schematic diagram illustrates the specific flowchart of operation S203 provided in the embodiments of this disclosure.

[0057] like Figure 4 As shown, operation S203 may include, for example, operations S401 to S405.

[0058] When operating the S401, the frequency tuning of the low-level device is controlled by the programmable module to open-loop mode, the amplitude output of the RF signal is zero, and the output mode of the RF signal is pulse mode.

[0059] When operating S402, the programmable control module controls the low-level device's RF signal output to be turned on, and increases the amplitude of the RF signal by a preset step.

[0060] In this embodiment of the disclosure, the preset step size can be, for example, 0.2, and the full-amplitude output can be 10.

[0061] When operating S403, the pulse radio frequency voltage is monitored. Based on the magnitude of the pulse radio frequency voltage, the high-frequency cavity is tuned through a low-level device and a fine-tuning ring until the pulse radio frequency voltage reaches the first target value.

[0062] The specific process can be as follows: Determine whether the pulse RF voltage Vp is zero. If the pulse RF voltage Vp is not zero, increase the amplitude by one step, and then tune the high-frequency cavity once through the low-level device and the fine-tuning loop until the pulse RF voltage Vp reaches the first target value Vp1.

[0063] When operating S404, the output mode of the low-level device's radio frequency signal is switched from pulse mode to continuous mode via the programmable module.

[0064] During operation S405, the continuous radio frequency voltage is monitored. Based on the magnitude of the continuous radio frequency voltage, the high-frequency cavity is tuned through a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value.

[0065] The specific process can be as follows: First, determine whether the continuous RF voltage Vc exceeds the second target value Vc1. If the pulsed RF voltage Vc exceeds the second target value Vc1, reduce the amplitude of the RF signal by a preset step size until the pulsed RF voltage is less than the second target value and the difference between the pulsed RF voltage and the second target value reaches a preset value (e.g., 2kV). Then, tune the high-frequency cavity using a low-level device and a fine-tuning loop to bring the continuous RF voltage Vc to the second target value Vc1. Repeat this process until the tuned voltage Vc reaches the second target value Vc1. Second, if the pulsed RF voltage Vc does not exceed the second target value Vc1, tune the high-frequency cavity using a low-level device and a fine-tuning loop to bring the continuous RF voltage Vc to the second target value Vc1. Repeat this process until the tuned voltage Vc reaches the second target value Vc1.

[0066] After the pulsed RF voltage Vp reaches the first target value Vp1 and the continuous RF voltage Vc reaches the second target value Vc1, the frequency of the low-level device is controlled by the programmable control module to enter closed-loop mode, and then the amplitude stabilization and phase stabilization are controlled sequentially to enter closed-loop mode. At this point, the RF voltage recovery is complete.

[0067] According to the cavity radio frequency voltage automatic recovery method provided in the embodiments of this disclosure, based on the configured cavity radio frequency voltage automatic recovery system, reasonable tuning logic is set to better realize the automatic recovery of cavity radio frequency voltage.

[0068] In summary, the cavity radio frequency voltage automatic recovery system and method provided in this disclosure embodiment achieve real-time and rapid response to automatic recovery of loading after radio frequency drops to zero. It can automatically monitor the power source and interlock status, avoid the inefficiencies of manual operation, and reduce the risk of equipment damage.

[0069] The specific embodiments described above further illustrate the purpose, technical solutions, and beneficial effects of this disclosure. It should be understood that the above descriptions are merely specific embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A cavity radio frequency voltage automatic recovery system, characterized in that, The cavity radio frequency voltage automatic recovery system includes a low-level device, a power source, a high-frequency cavity, and a programmable control module, wherein: The low-level device is used to control the amplitude stabilization, phase stabilization, and frequency tuning of the radio frequency signal, monitor the pulsed radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity, monitor the normal signal of the interlocking condition, and switch the output mode of the radio frequency signal; wherein, the amplitude stabilization includes the ability to adjust the radio frequency signal output to an on or off state, the radio frequency signal output amplitude is adjustable, and the ability to switch between open-loop mode control and closed-loop mode control; the phase stabilization includes the ability to switch between open-loop mode control and closed-loop mode control; the frequency tuning includes the ability to switch between open-loop mode control and closed-loop mode control. The power source is used to amplify the radio frequency signal input from the low-level device and feed it into the high-frequency cavity, and to provide a normal power source signal. The high-frequency cavity is used to resonate the radio frequency power fed into the power source, establish a radio frequency electric field, and adjust the frequency of the high-frequency cavity through a fine-tuning ring. The fine-tuning ring is a ring structure made of copper tube, installed at the bottom of the high-frequency cavity, and the frequency of the high-frequency cavity is adjusted by adjusting the magnetic flux of the ring structure. The programmable control module is used to control the fine-tuning loop to restore the radio frequency voltage of the high-frequency cavity after the radio frequency voltage of the high-frequency cavity drops to zero, based on the low-level device.

2. The cavity radio frequency voltage automatic recovery system according to claim 1, characterized in that, The output modes include pulse mode and continuous mode. In pulse mode, the low-level device is used to output pulse radio frequency signals, and in continuous mode, the low-level device is used to output continuous radio frequency signals.

3. A method for restoring radio frequency voltage in the cavity radio frequency voltage automatic recovery system of claim 1 or 2, characterized in that, include: Monitor the cavity radio frequency voltage of the cavity radio frequency voltage automatic recovery system; After the cavity radio frequency voltage drops to zero, monitor the interlocking condition normal signal and the power source normal signal; When both the interlocking condition normal signal and the power source normal signal are normal, the high-frequency cavity is tuned by a low-level device and a fine-tuning loop until the pulse radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity meet the preset conditions, thus completing the radio frequency voltage recovery. The tuning of the high-frequency cavity via a fine-tuning ring includes: Control the fine-tuning ring to rotate along the first direction and monitor the changing trend of the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity; When the pulsed radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity shows a continuous decrease as the fine-tuning ring rotates along the first direction, the fine-tuning ring is controlled to rotate along the second direction; wherein the first direction and the second direction are opposite. After controlling the fine-tuning ring to rotate along the second direction until the pulse radio frequency voltage or continuous radio frequency voltage of the high-frequency cavity changes from an upward trend to a downward trend, the fine-tuning ring is controlled to rotate along the first direction to the position corresponding to the previously monitored maximum value of the pulse radio frequency voltage or the maximum value of the continuous radio frequency voltage of the high-frequency cavity. The tuning of the high-frequency cavity using a low-level device and a fine-tuning loop until the pulsed radio frequency voltage and continuous radio frequency voltage of the high-frequency cavity meet preset conditions includes: The frequency of the low-level device is tuned to open-loop mode by the programmable module, the amplitude output of the radio frequency signal is zero, and the output mode of the radio frequency signal is pulse mode. The radio frequency signal output of the low-level device is controlled to be turned on by the programmable module, and the amplitude of the radio frequency signal is increased by a preset step. Monitor the pulse radio frequency voltage, and tune the high-frequency cavity according to the magnitude of the pulse radio frequency voltage using a low-level device and a fine-tuning loop until the pulse radio frequency voltage reaches the first target value; The output mode of the low-level device's radio frequency signal is switched from pulse mode to continuous mode via the programmable control module; The continuous radio frequency voltage is monitored, and the high-frequency cavity is tuned according to the magnitude of the continuous radio frequency voltage through a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value.

4. The radio frequency voltage recovery method according to claim 3, characterized in that, The monitoring of the pulsed radio frequency voltage, and the tuning of the high-frequency cavity based on the magnitude of the pulsed radio frequency voltage using a low-level device and a fine-tuning loop until the pulsed radio frequency voltage reaches a first target value, specifically includes: Determine whether the pulsed radio frequency voltage is zero; After the pulse radio frequency voltage is not zero, the high-frequency cavity is tuned once by a low-level device and a fine-tuning loop for each step increase in amplitude until the pulse radio frequency voltage reaches the first target value.

5. The radio frequency voltage recovery method according to claim 3, characterized in that, The monitoring of the continuous radio frequency voltage, and the tuning of the high-frequency cavity based on the magnitude of the continuous radio frequency voltage using a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches a second target value, specifically includes: Determine whether the continuous radio frequency voltage exceeds the second target value; If the pulsed radio frequency voltage exceeds the second target value, the amplitude of the radio frequency signal is reduced by a preset step size until the pulsed radio frequency voltage is less than the second target value and the difference between the pulsed radio frequency voltage and the second target value reaches a preset value. Then, the high-frequency cavity is tuned by a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value. If the pulsed radio frequency voltage does not exceed the second target value, the high-frequency cavity is tuned by a low-level device and a fine-tuning loop until the continuous radio frequency voltage reaches the second target value.

6. The radio frequency voltage recovery method according to claim 5, characterized in that, After the pulsed radio frequency voltage reaches the first target value and the continuous radio frequency voltage reaches the second target value, the frequency of the low-level device is controlled to be tuned to closed-loop mode by the programmable control module, and then the amplitude stabilization and phase stabilization are controlled to be closed-loop mode in sequence.

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