A spiral resonator for ion trap experiments

Abstract

The present invention discloses a spiral resonator for ion trap experiments, comprising an input connector, an antenna, a coil post, at least one spiral coil, and an output connector equal in number to the number of spiral coils. The input connector is connected to the antenna. The outer surface of the coil post is provided with spiral grooves equal in number to the number of spiral coils. Each spiral coil is correspondingly disposed within a corresponding spiral groove and connected to a corresponding output connector. The antenna is coaxially arranged with the spiral grooves on the coil post. The spiral resonator for ion trap experiments of the present invention can reduce coil deformation and positional deviation, thereby ensuring coaxiality.

Description

Technical Field

[0001] The present invention relates to the technical field of resonators, and in particular to a spiral resonator used in ion trap experiments. Background Art

[0002] Resonators are essential components in instruments like ion traps that require high-voltage, narrow-bandwidth RF signal input. Resonators amplify low-power RF signals through antenna coupling and amplification, while also utilizing their frequency-selective properties to generate narrow-bandwidth, precise-frequency RF signals. In ion trap experiments, helical resonators are often used due to their stringent requirements for RF signal stability and frequency bandwidth. These helical resonators offer a high Q factor, meeting the requirements of ion trap experiments.

[0003] Currently, the coaxiality of the antenna and coil of spiral resonators used in ion trap experiments on the market cannot be effectively guaranteed due to coil deformation or assembly errors. The deviation in coaxiality will greatly affect the coupling performance, causing the performance of the spiral resonance to deteriorate. Summary of the Invention

[0004] In order to overcome the deficiencies of the prior art, the present invention aims to provide a spiral resonator for ion trap experiments, which can reduce coil deformation and position deviation and ensure coaxiality.

[0005] The purpose of the present invention is achieved by adopting the following technical solutions:

[0006] A spiral resonator for ion trap experiments comprises: an input connector, an antenna, a coil post, at least one spiral coil, and output connectors equal in number to the spiral coils; the input connector is connected to the antenna; the outer surface of the coil post is provided with spiral grooves equal in number to the spiral coils; each spiral coil is correspondingly arranged in each spiral groove; each spiral coil is correspondingly connected to each output connector; the antenna is coaxially arranged with the spiral grooves on the coil post.

[0007] Furthermore, the number of the spiral coils is two, the two spiral coils form a double helix structure, and the angle between the two spiral coils differs by 180°.

[0008] Furthermore, the spiral resonator used for ion trap experiments also includes an outer shell, an upper cover and a lower cover, the outer shell has two oppositely arranged openings, the coil post is located in the outer shell, and the two ends of the coil post are respectively connected to the two openings; the upper cover and the lower cover are both connected to the outer shell and are respectively covered on the two openings of the outer shell, the input connector and the antenna are both connected to the upper cover, and each output connector is connected to the lower cover, and a vent is also provided on the lower cover.

[0009] Furthermore, the shell is in a rectangular parallelepiped shape, the two openings are located at both ends of the shell in the length direction, and mounting plates are respectively provided on two opposite side surfaces of the shell.

[0010] Furthermore, a threaded hole coaxial with the opening is provided on the upper cover, an antenna fixing plate is threadedly connected to the threaded hole, and the input connector and the antenna are both arranged on the antenna fixing plate.

[0011] Furthermore, the spiral resonator used for ion trap experiments also includes two DC compensation PCB boards, two DC compensation connectors and two DC compensation grounding connectors; each of the DC compensation PCB boards is arranged at one end of the coil column close to the antenna, and each of the DC compensation connectors and DC compensation grounding connectors are arranged on the outer shell, and each of the spiral coils facing the antenna is connected in series with a DC compensation grounding connector, a DC compensation PCB board and a DC compensation connector through a wire at one end.

[0012] Furthermore, the coil post has a hollow structure, and one end of each spiral coil facing the antenna is inserted from the outside of the coil post into the inside of the coil post and then connected to the DC compensation grounding connector, DC compensation PCB board and DC compensation connector.

[0013] Furthermore, the spiral resonator used for ion trap experiments also includes a phase-synchronized PCB board, which is arranged at the end of the coil column away from the antenna. The end of each spiral coil away from the antenna is inserted from the outside of the coil column into the inside of the coil column and is respectively connected to each output connector through a wire. Each output connector is connected to the phase-synchronized PCB board through a wire.

[0014] Furthermore, the spiral resonator for ion trap experiments also includes a sampling PCB board, a sampling connector and a sampling ground connector; the sampling PCB board is arranged at the end of the coil column away from the antenna, the sampling connector and the sampling ground connector are both arranged on the housing, and the sampling PCB board is respectively connected to the sampling ground connector, the sampling connector and any of the output connectors through wires.

[0015] Furthermore, reinforcing ribs are provided in the circumferential direction of the coil post.

[0016] Compared with the existing technology, the beneficial effects of the present invention are: a spiral groove is opened on the outer surface of the coil column, the antenna and the spiral groove are coaxially arranged, and the spiral coil is arranged in the spiral groove, so the shape and position of the spiral coil will be constrained by the spiral groove, reducing the coaxiality deviation of the spiral coil with the antenna due to deformation or assembly error, and realizing precise positioning of the shape and position of the spiral coil, thereby ensuring the performance of the spiral resonator of the present invention for ion trap experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a spiral resonator used in ion trap experiments according to the present invention;

[0018] Figure 2 for Figure 1 Exploded diagram;

[0019] Figure 3 A schematic diagram of a helical resonator housing used in ion trap experiments according to the present invention;

[0020] Figure 4 Schematic diagram of a spiral resonator coil column used in ion trap experiments according to the present invention;

[0021] Figure 5 This is a top view of the present invention after removing the upper cover, antenna, input connector, and antenna fixing plate;

[0022] Figure 6 for Figure 5 A top view of the other end after removing the lower cover and output connector;

[0023] Figure 7 It is a three-dimensional schematic diagram of the spiral coil and the connecting circuit in the present invention.

[0024] In the figure: 1. Input connector; 2. Antenna; 3. Coil post; 31. Spiral groove; 32. Reinforcement rib; 4. Spiral coil; 5. Output connector; 61. Housing; 611. Opening; 612. Mounting plate; 62. Upper cover; 621. Threaded hole; 63. Lower cover; 7. Antenna fixing plate; 81. DC compensation PCB board; 82. DC compensation connector; 83. DC compensation grounding connector; 91. Phase synchronization PCB board; 101. Sampling PCB board; 102. Sampling connector; 103. Sampling grounding connector; 110. Wire. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the accompanying drawings. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used in this specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Reference Figure 1-2 , shows a spiral resonator for ion trap experiments provided by an embodiment of the present invention, which at least includes an input connector 1, an antenna 2, a coil post 3, at least one spiral coil 4, and output connectors 5 equal in number to the spiral coils 4. The input connector 1 is connected to the antenna 2. The outer surface of the coil post 3 is provided with spiral grooves 31 equal in number to the spiral coils 4. Each spiral coil 4 is correspondingly arranged in each spiral groove 31, and each spiral coil 4 is correspondingly connected to each output connector 5. The antenna 2 is coaxially arranged with the spiral grooves 31 on the coil post 3. Specifically, the input connector 1 is used to input radio frequency signals, and a coaxial connector (generally an SMA type connector) can be used to input radio frequency signals from a signal source to the antenna 2; the output connector 5 is used to connect a load. The coil post 3 is made of high-strength engineering plastics compatible with low-temperature vacuum, such as PEEK or PI.

[0029] In the above-mentioned setting method, a spiral groove 31 is provided on the outer surface of the coil column 3, the antenna 2 is coaxially arranged with the spiral groove 31, and the spiral coil 4 is arranged in the spiral groove 31, so the shape and position of the spiral coil 4 will be constrained by the spiral groove 31, reducing the coaxiality deviation of the spiral coil 4 with the antenna 2 due to deformation or assembly error, and realizing precise positioning of the shape and position of the spiral coil 4, thereby ensuring the performance of the spiral resonator of the present invention for ion trap experiments.

[0030] In some embodiments, reference Figure 2 as well as Figure 7There are two spiral coils 4, forming a double helix structure, with the angle between the two spiral coils 4 differing by 180°. Accordingly, there are also two output connectors 5, and the spiral groove 31 also has a double helix structure. In other words, the spiral resonator for ion trap experiments of the present invention can be connected to two loads simultaneously. The 180° angle difference between the two spiral coils 4 causes the phases of the two spiral coils 4 to differ by 180°, which facilitates subsequent phase synchronization.

[0031] In some embodiments, reference Figure 1-4 The spiral resonator used for ion trap experiments also includes a shell 61, an upper cover 62, and a lower cover 63. The shell 61 has two openings 611 arranged opposite to each other. The coil post 3 is located in the shell 61, and the two ends of the coil post 3 are respectively connected to the two openings 611; the upper cover 62 and the lower cover 63 are both connected to the shell 61 and respectively cover the two openings 611 of the shell 61. The input connector 1 and the antenna 2 are both connected to the upper cover 62, and each output connector 5 is connected to the lower cover 63. In fact, the inner cavity of the shell 61 is the resonant cavity. The two ends of the coil post 3 are fixed to the two openings 611 by interference fit. Ventilation holes can also be provided on the lower cover 63 to adapt to the use of the spiral resonator used for ion trap experiments in a vacuum environment (to facilitate vacuuming). A mounting plate 612 for mounting and fixing can also be provided on the shell 61. The housing 61 , the upper cover 62 and the lower cover 63 are generally made of metal materials with good electrical conductivity, such as oxygen-free copper, and are gold-plated on the surface to improve the working performance of the spiral resonator used in ion trap experiments.

[0032] In some embodiments, reference Figure 1-3 The housing 61 is rectangular in shape, with two openings 611 located at opposite ends of the housing 61 in its lengthwise direction. This means that the housing 61 has four flat surfaces, which facilitates the securing of the connector. Furthermore, when the helical resonator for ion trap experiments of the present invention is used in a low-temperature environment, it can maintain full contact with the cold source plane, thereby increasing the heat transfer area. Two mounting plates 612 can be provided, one on each of the two opposing sides of the housing 61.

[0033] In some embodiments, reference Figure 2 The upper cover 62 has a threaded hole 621 coaxial with the opening 611. The antenna mounting plate 7 is threadedly connected to the threaded hole 621. Both the input connector 1 and antenna 2 are mounted on the antenna mounting plate 7. Specifically, the input connector 1 is fixed to the antenna mounting plate 7, and the antenna 2 is welded to the inner core of the input connector 1. Because the antenna mounting plate 7 is threadedly connected to the threaded hole 621, the antenna 2 can be displaced axially along the helical coil 4, facilitating coupling adjustment under different conditions.

[0034] In some embodiments, reference Figure 5-7 The spiral resonator used for the ion trap experiment also includes two DC compensation PCB boards 81, two DC compensation connectors 82, and two DC compensation grounding connectors 83. Each DC compensation PCB board 81 is arranged at the end of the coil pole 3 close to the antenna 2, and each DC compensation connector 82 and DC compensation grounding connector 83 are arranged on the housing 61. The end of each spiral coil 4 facing the antenna 2 is connected in series with a DC compensation grounding connector 83, a DC compensation PCB board 81, and a DC compensation connector 82 via a wire 110. In other words, the aforementioned DC compensation PCB board 81, DC compensation connector 82, DC compensation grounding connector 83, and the wire 110 connecting the aforementioned components constitute a DC compensation circuit, through which a DC voltage can be injected into the spiral coil 4 to obtain a higher output voltage.

[0035] In some embodiments, the coil post 3 is hollow, and the end of each spiral coil 4 facing the antenna 2 is inserted from the outside of the coil post 3 into the inside of the coil post 3, and then connected to the DC compensation grounding connector 83, the DC compensation PCB board 81, and the DC compensation connector 82. This method can further secure the spiral coil 4 and ensure coaxiality.

[0036] In some embodiments, the helical resonator used in ion trap experiments further includes a phase-synchronized PCB board 91, which is disposed at the end of the coil post 3 away from the antenna 2. The end of each spiral coil 4 away from the antenna 2 is inserted from the outside of the coil post 3 into the inside of the coil post 3 and then connected to a respective output connector 5 via a wire 110. Each output connector 5 is connected to the phase-synchronized PCB board 91 via a wire 110. This circuit structure allows for phase synchronization of the output RF signals of the two spiral coils 4.

[0037] In some embodiments, the spiral resonator used for ion trap experiments further includes a sampling PCB board 101, a sampling connector 102, and a sampling ground connector 103. The sampling PCB board 101 is provided with two sets of capacitors connected in series. The sampling connector 102 is used to connect to a coaxial connector to output a sampling signal to a monitoring instrument. The sampling PCB board 101 is disposed at the end of the coil post 3 away from the antenna 2. The sampling connector 102 and the sampling ground connector 103 are both disposed on the housing 61. The sampling PCB board 101 is respectively connected to the sampling ground connector 103, the sampling connector 102, and any output connector 5 via a wire 110. In other words, the PCB board, sampling connector 102, sampling ground connector 103, and the wire 110 connecting these components constitute a sampling circuit, which can sample the radio frequency signal from the output connector 5 of the spiral coil 4 to monitor the operating status of the spiral resonator used for ion trap experiments according to the present invention.

[0038] In some embodiments, reference Figure 4 The coil post 3 is provided with reinforcing ribs 32 in the circumferential direction. By providing the reinforcing ribs 32, the structural strength of the coil post 3 can be ensured, thereby ensuring the reliability of the spiral resonance of the present invention.

[0039] The spiral resonator device for ion trap experiments of the present invention is used to amplify and narrow-bandpass filter radio frequency signals in order to obtain a high-voltage, narrow-bandpass radio frequency signal, and at the same time can achieve impedance matching between the radio frequency signal and the load, minimize radio frequency energy reflection, and improve the pass rate of radio frequency energy. When in use, it is necessary to reliably connect the radio frequency signal generator to the input connector 1 of the spiral resonator for ion trap experiments of the present invention with a coaxial cable, and at the same time connect the output connector 5 to the load. In order to monitor the quality of the output signal, it is also necessary to connect the sampling connector 102 to the monitoring equipment for sampling the output signal. In some application scenarios, if a higher radio frequency output voltage is required, the DC compensation connector 82 can be connected to a constant voltage DC source, and a compensation DC voltage can be injected into the spiral coil 4 to increase the initial voltage of the spiral coil 4, and then a higher output voltage can be obtained through the amplification effect of the resonator.

[0040] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A spiral resonator for ion trap experiments, characterized in that: include: An input connector (1), an antenna (2), a coil post (3), at least one spiral coil (4), and output connectors (5) equal in number to the number of the spiral coils (4); the input connector (1) is connected to the antenna (2); the outer surface of the coil post (3) is provided with spiral grooves (31) equal in number to the number of the spiral coils (4); each spiral coil (4) is correspondingly arranged in each spiral groove (31); each spiral coil (4) is correspondingly connected to each output connector (5); the antenna (2) and the spiral grooves (31) on the coil post (3) are coaxially arranged; wherein the number of the spiral coils (4) is two, the two spiral coils (4) form a double helix structure, and the angle between the two spiral coils (4) differs by 180°.

2. The helical resonator for ion trap experiments according to claim 1, wherein: The spiral resonator for ion trap experiments further comprises a shell (61), an upper cover (62) and a lower cover (63); the shell (61) has two openings (611) arranged opposite to each other; the coil post (3) is located in the shell (61), and the two ends of the coil post (3) are respectively connected to the two openings (611); the upper cover (62) and the lower cover (63) are both connected to the shell (61) and are respectively covered on the two openings (611) of the shell (61); the input connector (1) and the antenna (2) are both connected to the upper cover (62); each of the output connectors (5) is connected to the lower cover (63); and the lower cover (63) is also provided with a vent.

3. The helical resonator for ion trap experiments according to claim 2, wherein: The housing (61) is in a rectangular parallelepiped shape, the two openings (611) are located at both ends of the length direction of the housing (61), and mounting plates (612) are respectively provided on two opposite side surfaces of the housing (61).

4. The helical resonator for ion trap experiments according to claim 2, wherein: The upper cover (62) is provided with a threaded hole (621) coaxial with the opening (611); the threaded hole (621) is internally threadedly connected to an antenna fixing plate (7); and the input connector (1) and the antenna (2) are both arranged on the antenna fixing plate (7).

5. The helical resonator for ion trap experiments according to claim 2, wherein: The spiral resonator for ion trap experiments further comprises two DC compensation PCB boards (81), two DC compensation connectors (82) and two DC compensation grounding connectors (83); each of the DC compensation PCB boards (81) is arranged at one end of the coil column (3) close to the antenna (2), each of the DC compensation connectors (82) and the DC compensation grounding connector (83) is arranged on the housing (61), and one end of each spiral coil (4) facing the antenna (2) is sequentially connected in series with a DC compensation grounding connector (83), a DC compensation PCB board (81) and a DC compensation connector (82) via a wire (110).

6. The helical resonator for ion trap experiments according to claim 5, wherein: The coil post (3) has a hollow structure, and one end of each spiral coil (4) facing the antenna (2) is inserted from the outside of the coil post (3) into the inside of the coil post (3) and then connected to the DC compensation grounding connector (83), the DC compensation PCB board (81), and the DC compensation connector (82).

7. The helical resonator for ion trap experiments according to claim 6, wherein: The spiral resonator for ion trap experiments further comprises a phase-synchronized PCB board (91), wherein the phase-synchronized PCB board (91) is arranged at one end of the coil post (3) away from the antenna (2), and one end of each spiral coil (4) away from the antenna (2) is inserted from the outside of the coil post (3) into the inside of the coil post (3) and then connected to each output connector (5) via a wire (110), and each output connector (5) is connected to the phase-synchronized PCB board (91) via a wire (110).

8. The helical resonator for ion trap experiments according to claim 7, wherein: The spiral resonator for ion trap experiments further comprises a sampling PCB (101), a sampling connector (102) and a sampling ground connector (103); the sampling PCB (101) is arranged at one end of the coil post (3) away from the antenna (2); the sampling connector (102) and the sampling ground connector (103) are both arranged on the housing (61); and the sampling PCB (101) is respectively connected to the sampling ground connector (103), the sampling connector (102) and any one of the output connectors (5) via a wire (110).

9. The helical resonator for ion trap experiments according to claim 6, wherein: Reinforcement ribs (32) are provided in the circumferential direction of the coil post (3).

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