An adjustable gap curved waveguide device

Abstract

The application discloses a kind of adjustable gap curved surface waveguide devices, including beam tube and waveguide adjusting mechanism;Two pieces of curved surface waveguide are equipped in beam tube and are oppositely arranged and mutually parallel;Waveguide adjusting mechanism is equipped with two, respectively in the position of beam tube near two ends;Waveguide adjusting mechanism includes bellow, differential head, support guide rod, bellow, waveguide claw, guide flange and elastic component;Bellow and support guide rod are equipped in the position of beam tube near two ends;Guide flange is installed in the end of bellow away from the beam tube, differential head is connected with the side of guide flange away from bellow;Waveguide claw is equipped in bellow, and it is deeply into the beam tube, curved surface waveguide is equipped on waveguide claw, and waveguide claw is connected with guide flange;Gap adjustment of curved surface waveguide is realized based on the device.

Description

Technical Field

[0001] This invention relates to the field of waveguide device technology, and in particular to an adjustable gap curved surface waveguide device. Background Technology

[0002] Terahertz (THz) is an electromagnetic wave with a frequency range of 0.1 to 10 THz, located between microwaves and infrared light. It is a frequency band that marks the transition from macroscopic electronics to microscopic optoelectronics and has very unique properties, such as transientity, low energy, penetrability, and broadband. In recent years, it has attracted widespread attention and has great application prospects in biomedical sample detection, safety detection, explosive material marking, and high data rate communication.

[0003] However, high-performance terahertz sources are one of the core factors limiting the development of this field. Compared with optical-based THz sources, THz radiation sources based on relativistic electron beams not only have the characteristics of high peak power, but also have advantages such as high repetition frequency, high brightness, good collimation, good polarization, and frequency tunability, showing great application potential.

[0004] Among them, the zero-slip coherent undulator radiation technique utilizes a special waveguide design to make the velocity of the terahertz group propagating in the waveguide equal to the longitudinal average velocity of the electron beam. At this time, the envelope of the radiation field is confined around the electron beam, which will generate high-power quasi-single-cycle radiation. This is the preferred method to obtain high-average-power quasi-single-cycle terahertz radiation. However, this method requires a waveguide with adjustable gap. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides an adjustable gap curved waveguide device that can precisely adjust the waveguide height so that the velocity of the terahertz wave group propagating in the waveguide is equal to the longitudinal average velocity of the electron beam, ultimately achieving high average power quasi-single-cycle terahertz radiation.

[0006] This invention provides an adjustable gap curved waveguide device, the specific technical solution of which is as follows:

[0007] Includes the bundle tube and waveguide adjustment mechanism;

[0008] The bundle tube contains two curved waveguides that are arranged opposite to each other and are parallel to each other.

[0009] The waveguide adjustment mechanism includes two identical first adjustment mechanism and second adjustment mechanism, which are respectively located near both ends of the beam tube;

[0010] The waveguide adjustment mechanism includes a bellows, a differential head, a support guide rod, a bellows, waveguide claws, a guide flange, and an elastic component;

[0011] The bellows and the support guide rod are located near both ends of the bundle tube; the guide flange is installed at the end of the bellows away from the bundle tube, and the differential head is connected to the side of the guide flange away from the bellows; the waveguide claw is provided inside the bellows, extending into the bundle tube, and the curved waveguide is provided on the waveguide claw, which is connected to the guide flange.

[0012] Furthermore, the bundle tube has a rectangular structure, and openings are provided on the upper and lower wide surfaces near both ends of the bundle tube, with the corrugated tube disposed in the openings;

[0013] The bundle tube has slots on its narrow sides near both ends, and the support guide rod is disposed in the slots;

[0014] The support guide rod and the bellows are perpendicular to the wide face of the bundle tube.

[0015] The support rod primarily provides reliable support and precise guidance for the displacement of the curved waveguide.

[0016] The bellows is used to ensure the vacuum level inside the curved waveguide bundle, while also providing the degree of freedom for the displacement of the curved waveguide.

[0017] Furthermore, the main body of the guide flange is knife-edge type, and guide holes are provided at both ends of the flange. The support guide rod passes through the guide holes. The knife-edge flange face of the guide flange is provided with mounting holes, which are fixedly connected to the waveguide claws. The back of the guide flange is provided with a tight-fitting hole to engage with the micrometer head.

[0018] The tightening hole is used to contact the micrometer head during use to adjust the gap and prevent the micrometer head from slipping during rotation.

[0019] Furthermore, the guide flange and the bellows are provided with a connecting flange, and the guide flange and the connecting flange are fixedly connected by bolts, and a sealing ring is provided at the connection.

[0020] Furthermore, the curved waveguide is formed by processing titanium metal and has an inverted T-shaped rod structure. The protruding end of the inverted T-shape is an arc surface structure, which is the working surface of the curved waveguide, and the roughness is between 0.03 and 0.08.

[0021] Furthermore, positioning platforms are provided on both sides of the protruding end of the curved waveguide, and the positioning platforms are in close contact with the waveguide claws.

[0022] The positioning platform is used to ensure the positioning of the curved waveguide in the length direction.

[0023] Furthermore, the elastic component is a spring, which is sleeved at both ends of the support guide rod.

[0024] When a vacuum is drawn on an adjustable-size curved waveguide, the bellows is compressed due to the pressure difference inside and outside the bundle tube. In order to achieve adjustable dimensions between the two curved waveguides, springs are provided at both ends of each support rod relative to the bundle tube, mainly to overcome the compressive force of atmospheric pressure on the bellows.

[0025] Furthermore, the spring is provided with positioning rings at both ends.

[0026] The positioning ring is used to prevent the spring from sliding sideways when compressed.

[0027] Furthermore, it also includes a mounting rod, which is fixed to the two support guide rods on the same side by bolts, and the mounting rod is sleeved on the micrometer head through the central through hole.

[0028] The differential head is fastened to the center of the mounting rod, and the top shaft of the differential head is inserted into the tight-fitting hole on the end face of the guide flange. Based on the mounting rod, the stability of the support guide rod is ensured.

[0029] Furthermore, the bundle tube is provided with vacuum flanges at both ends, and the bundle tube and the hollow flange are made of non-magnetic material.

[0030] The vacuum flange is used to achieve a vacuum seal.

[0031] The beneficial effects of this invention are as follows:

[0032] The device of this invention has waveguide adjustment mechanisms at both ends of the beam tube. The curved waveguides are fixed by waveguide claws and placed opposite each other inside the beam tube. The gap between the curved waveguides inside the beam tube is adjusted by synchronously adjusting the differential head using the spring force and the support rods on both sides. At the same time, the curved waveguides have an inverted T-shaped structure, with the protruding end being an arc surface structure with a roughness between 0.03 and 0.08. The two waveguides are placed opposite each other with their arc surface structures facing each other, which realizes lateral focusing of the terahertz waves propagating in the waveguides and avoids the divergence of the terahertz waves. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of the device;

[0034] Figure 2 This is a schematic diagram showing the positional relationship between the bellows, support guide rod, and bundle tube;

[0035] Figure 3 This is a schematic diagram of the waveguide adjustment mechanism;

[0036] Figure 4 This is a schematic diagram of the waveguide claw structure;

[0037] Figure 5 This is a schematic diagram of the cross-section at the curved waveguide;

[0038] Figure 6This is a schematic diagram of the structure at the curved waveguide.

[0039] Figure 7 This is a schematic diagram of the guide flange structure;

[0040] Figure 8 This is a schematic diagram of the device for adjusting the gap.

[0041] Explanation of reference numerals in the attached drawings: 101-Bundle tube, 102-Curved waveguide, 103-Waveguide adjustment mechanism, 104-Bellboard, 105-Support guide rod, 106-Differential head, 107-Guide flange, 108-Waveguide claw, 109-Spring, 110-Positioning platform, 111-Positioning ring, 112-Mounting rod. Detailed Implementation

[0042] The technical solutions in the embodiments of the present invention are clearly and completely described in the following description. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0043] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is conventionally placed during use, or the orientation or positional relationship in which those skilled in the art conventionally understand it during use. This is only for the convenience of describing the present invention and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0044] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances. The accompanying drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Example 1

[0046] Embodiment 1 of the present invention discloses an adjustable gap curved waveguide device for zero-slip coherent undulator radiation, such as... Figure 1 As shown, the specific structure is as follows:

[0047] Includes a bundle tube 101 and a waveguide adjustment mechanism 103;

[0048] The bundle tube 101 contains two curved waveguides 102 that are arranged opposite to each other and are parallel to each other;

[0049] like Figure 5 As shown, in this embodiment, the curved waveguide 102 is formed by processing titanium metal and has an inverted T-shaped rod structure. The protruding end of the inverted T-shape is an arc surface structure, which is the working surface of the curved waveguide 102, with a roughness between 0.03 and 0.08. It can laterally focus the terahertz waves transmitted in the waveguide and avoid the divergence of terahertz waves.

[0050] The platforms designed on both sides are mainly to improve the strength of the waveguide and also serve as clamping areas during machining. A positioning platform of 110 steps is reserved at one point of the waveguide.

[0051] The waveguide adjustment mechanism 103 includes two identical first adjustment mechanism and second adjustment mechanism, which are respectively located near both ends of the bundle tube 101.

[0052] like Figure 2 As shown, in this embodiment, the bundle tube 101 has a rectangular structure, and openings are provided on the upper and lower wide surfaces near both ends of the bundle tube 101, and the corrugated tube 104 is disposed in the openings;

[0053] The bundle tube 101 has slots on its narrow sides near both ends, and the support guide rod 105 is disposed in the slots;

[0054] Specifically, in order to sufficiently reduce the weight of the bundle tube 101, in practice, the tube wall is only thickened in local areas at both ends of the bundle tube 101, and the two ends of the opening position are the positions where the tube wall is thickened;

[0055] The support guide rod 105 and the bellows 104 are perpendicular to the wide surface of the bundle tube 101.

[0056] The support rod 105 mainly provides reliable support and precise guidance for the displacement of the curved waveguide 102.

[0057] The bellows 104 is fitted with and welded to the four holes at both ends of the bundle tube 101 to ensure the vacuum level inside the curved bundle tube 101, while providing the degree of freedom for the displacement of the curved waveguide 102.

[0058] like Figure 3As shown, the waveguide adjustment mechanism 103 includes a bellows 104, a differential head 106, a support guide rod 105, a bellows 104, a waveguide claw 108, a guide flange 107, and an elastic component;

[0059] The bellows 104 and the support guide rod 105 are located near both ends of the bundle tube 101; the guide flange 107 is installed at the end of the bellows 104 away from the bundle tube 101, and the micrometer head 106 is connected to the side of the guide flange 107 away from the bellows 104; the waveguide claw 108 is provided inside the bellows 104, extending into the bundle tube 101, and the curved waveguide 102 is provided on the waveguide claw 108, which is connected to the guide flange 107.

[0060] like Figure 4 As shown, the waveguide claw 108 is mainly used to connect the curved waveguide 102 and the guide flange 107, and the three are fixed together and made into one unit;

[0061] Two curved waveguides 102 are symmetrically placed inside a rectangular bundle tube 101 and are fixedly assembled with waveguide claws 108, supporting the two ends of the curved waveguides 102.

[0062] Combination Figure 3 As shown, in this embodiment, the elastic component is a spring 109, which is sleeved on both ends of the support guide rod 105.

[0063] When the adjustable-size curved waveguide 102 is evacuated, the bellows 104 is compressed due to the pressure difference inside and outside the bundle tube 101. In order to achieve adjustable size between the two curved waveguides 102, each support rod 105 is provided with a spring 109 at both ends relative to the bundle tube 101, which is mainly used to overcome the compressive force of the bellows 104 under atmospheric pressure.

[0064] Example 2

[0065] Embodiment 1 of the present invention discloses an adjustable gap curved waveguide device for zero-slip coherent undulator radiation, such as... Figure 1 As shown, the specific structure is as follows:

[0066] Includes a bundle tube 101 and a waveguide adjustment mechanism 103;

[0067] The bundle tube 101 contains two curved waveguides 102 that are arranged opposite to each other and are parallel to each other;

[0068] In this embodiment, vacuum flanges are provided at both ends of the bundle tube 101. The bundle tube 101 and the hollow flange are made of non-magnetic material. The vacuum flange is used to seal and achieve vacuum.

[0069] like Figure 5As shown, in this embodiment, the curved waveguide 102 is formed by processing titanium metal and has an inverted T-shaped rod structure. The protruding end of the inverted T-shape is an arc surface structure, which is the working surface of the curved waveguide 102, with a roughness between 0.03 and 0.08. It can laterally focus the terahertz waves transmitted in the waveguide and avoid the divergence of terahertz waves.

[0070] The platforms designed on both sides are mainly to improve the strength of the waveguide and also serve as clamping areas during machining. A positioning platform of 110 steps is reserved at one point of the waveguide.

[0071] like Figure 6 As shown, in this embodiment, positioning platforms 110 are provided on both sides of the protruding end of the curved waveguide 102. The positioning platforms 110 are in close contact with the waveguide claws 108 to ensure the positioning of the curved waveguide 102 in the length direction.

[0072] The waveguide adjustment mechanism 103 includes two identical first adjustment mechanism and second adjustment mechanism, which are respectively located near both ends of the bundle tube 101.

[0073] like Figure 2 As shown, in this embodiment, the bundle tube 101 has a rectangular structure, and openings are provided on the upper and lower wide surfaces near both ends of the bundle tube 101, and the corrugated tube 104 is disposed in the openings;

[0074] Specifically, in order to sufficiently reduce the weight of the bundle tube 101, in practice, the tube wall is only thickened in local areas at both ends of the bundle tube 101, and the two ends of the opening position are the positions where the tube wall is thickened;

[0075] The bundle tube 101 has slots on its narrow sides near both ends, and the support guide rod 105 is disposed in the slots;

[0076] The support guide rod 105 and the bellows 104 are perpendicular to the wide surface of the bundle tube 101.

[0077] The support rod 105 mainly provides reliable support and precise guidance for the displacement of the curved waveguide 102.

[0078] The bellows 104 is fitted with and welded to the four holes at both ends of the bundle tube 101 to ensure the vacuum level inside the curved bundle tube 101, while providing the degree of freedom for the displacement of the curved waveguide 102.

[0079] like Figure 3 As shown, the waveguide adjustment mechanism 103 includes a bellows 104, a differential head 106, a support guide rod 105, a bellows 104, a waveguide claw 108, a guide flange 107, and an elastic component;

[0080] The bellows 104 and the support guide rod 105 are located near both ends of the bundle tube 101; the guide flange 107 is installed at the end of the bellows 104 away from the bundle tube 101, and the micrometer head 106 is connected to the side of the guide flange 107 away from the bellows 104; the waveguide claw 108 is provided inside the bellows 104, extending into the bundle tube 101, and the curved waveguide 102 is provided on the waveguide claw 108, which is connected to the guide flange 107;

[0081] like Figure 4 As shown, the waveguide claw 108 is mainly used to connect the curved waveguide 102 and the guide flange 107, and the three are fixed together and made into one unit;

[0082] Two curved waveguides 102 are symmetrically placed inside a rectangular bundle tube 101 and are fixedly assembled with waveguide claws 108, supporting the two ends of the curved waveguides 102.

[0083] Combination Figure 3 As shown, in this embodiment, the elastic component is a spring 109, which is sleeved on both ends of the support guide rod 105.

[0084] In this embodiment, the spring 109 is provided with positioning rings 111 at both ends to prevent the spring 109 from sliding sideways when compressed.

[0085] When the adjustable-size curved waveguide 102 is evacuated, the bellows 104 is compressed due to the pressure difference inside and outside the bundle tube 101. In order to achieve adjustable size between the two curved waveguides 102, each support rod 105 is provided with a spring 109 at both ends relative to the bundle tube 101, which is mainly used to overcome the compressive force of the bellows 104 under atmospheric pressure.

[0086] like Figure 7 As shown, in this embodiment, the main body of the guide flange 107 is knife-edge type, and guide holes are provided at both ends of the flange. The support guide rod 105 passes through the guide holes. The knife-edge flange face of the guide flange 107 is provided with mounting holes, which are fixedly connected to the waveguide claw 108 through the mounting holes. The back of the guide flange 107 is provided with a tight-fitting hole to engage with the micrometer head 106.

[0087] The tightening hole is used to contact the micrometer head 106 during use to adjust the gap and prevent the micrometer head 106 from slipping during rotation.

[0088] Combination Figure 3 As shown in this embodiment, the guide flange 107 and the bellows 104 are provided with a connecting flange. The guide flange 107 and the connecting flange are fixedly connected by bolts, and the connection is sealed with an oxygen-free copper sealing ring.

[0089] Combination Figure 3 and Figure 8 As shown, in this embodiment, a mounting rod 112 is also included, which is fixed to the two support guide rods 105 on the same side by bolts. The mounting rod 112 is sleeved on the micrometer head 106 through the middle through hole.

[0090] The micrometer head 106 is fastened to the center of the mounting rod 112, and the top shaft of the micrometer head 106 is inserted into the tight top hole on the end face of the guide flange 107. Based on the mounting rod 112, the stability of the support guide rod 105 is ensured.

[0091] like Figure 8 As shown, the operation is as follows:

[0092] After the curved waveguide 102 and the device are installed, the differential head 106 is first rotated synchronously to tighten the guide flange 107 to overcome the elastic force of the spring 109, causing the two curved waveguides 102 inside the bundle tube 101 to move relative to each other and come close together, so that both ends are centered in the bundle tube 101. At this time, the current values ​​of the four differential heads 106 are recorded to calibrate the position of the curved waveguide 102 inside the bundle tube 101. Then, the differential head 106 is rotated synchronously, and under the force of the spring 109, the two curved waveguides 102 open and close synchronously, realizing the adjustable gap between the curved waveguides 102.

[0093] This invention is not limited to the specific embodiments described above. The invention extends to any new feature or combination disclosed in this specification, as well as any new method or process step or combination disclosed herein.

Claims

1. An adjustable gap curved waveguide device, characterized by, Includes the bundle tube and waveguide adjustment mechanism; The bundle tube contains two curved waveguides that are arranged opposite to each other and are parallel to each other. Two waveguide adjustment mechanisms are provided, respectively located near both ends of the beam tube; The waveguide adjustment mechanism includes a bellows, a differential head, a support guide rod, a bellows, waveguide claws, a guide flange, and an elastic component; The bellows and the support guide rod are located near both ends of the bundle tube; the guide flange is installed at the end of the bellows away from the bundle tube, and the differential head is connected to the side of the guide flange away from the bellows; the waveguide claw is provided inside the bellows, extending into the bundle tube, and the curved waveguide is provided on the waveguide claw, which is connected to the guide flange. The bundle tube has a rectangular structure, and openings are provided on the upper and lower wide surfaces near both ends of the bundle tube. The corrugated tube is disposed in the openings. The bundle tube has slots on its narrow sides near both ends, and the support guide rod is disposed in the slots; The support guide rod and the bellows are perpendicular to the wide surface of the bundle tube; The curved waveguide has an inverted T-shaped rod structure, with the protruding end of the inverted T-shape being an arc surface, which is the working surface of the curved waveguide, with a roughness between 0.03 and 0.

08.

2. The tunable gap curved waveguide device of claim 1, wherein, The main body of the guide flange is knife-edge type, and guide holes are provided at both ends of the flange. The support guide rod passes through the guide holes. The knife-edge flange face of the guide flange is provided with mounting holes, which are fixedly connected to the waveguide claws through the mounting holes. The back of the guide flange is provided with a tight-fitting hole to engage with the micrometer head.

3. The tunable gap curved waveguide device of claim 2, wherein, The guide flange and the bellows are connected by a connecting flange. The guide flange and the connecting flange are fixedly connected by bolts, and a sealing ring is provided at the connection point for sealing.

4. The tunable gap curved waveguide device of claim 1, wherein, Positioning platforms are provided on both sides of the protruding end of the curved waveguide, and the positioning platforms are in close contact with the waveguide claws.

5. The tunable gap curved waveguide device of claim 1, wherein, The elastic component is a spring, which is sleeved at both ends of the support guide rod.

6. An adjustable gap curved waveguide device according to claim 5, wherein, The spring has positioning rings at both ends.

7. The tunable gap curved waveguide device of claim 1, wherein, It also includes a mounting rod, which is fixed to the two support guide rods on the same side by bolts, and the mounting rod is sleeved on the micrometer head through the central through hole.

8. The tunable gap curved waveguide device of any of claims 1-7, wherein, The bundle tube is provided with vacuum flanges at both ends, and the bundle tube and the vacuum flanges are made of non-magnetic material.

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