CN212967601U - Quasi-optical transmission device capable of adjusting microwave incident angle - Google Patents
Quasi-optical transmission device capable of adjusting microwave incident angle Download PDFInfo
- Publication number
- CN212967601U CN212967601U CN202021462405.4U CN202021462405U CN212967601U CN 212967601 U CN212967601 U CN 212967601U CN 202021462405 U CN202021462405 U CN 202021462405U CN 212967601 U CN212967601 U CN 212967601U
- Authority
- CN
- China
- Prior art keywords
- vacuum chamber
- flange
- quasi
- transmission device
- optical transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims 1
- 238000003745 diagnosis Methods 0.000 abstract description 6
- 230000004927 fusion Effects 0.000 abstract description 4
- 210000002381 plasma Anatomy 0.000 description 11
- 238000005259 measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000053 physical method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
本实用新型属于受控核聚变等离子体诊断技术领域，具体涉及一种可调节微波入射角度的准光学传输装置，包括：高斯透镜、真空腔、椭球镜、法兰A、法兰B、盲板、金属杆、平面镜、密封法兰、螺杆和步进电机；本装置通过高斯透镜调节微波束腰以减少微波传输损耗；通过调整平面镜倾斜度从而实现不同角度的微波入射。
The utility model belongs to the technical field of controlled nuclear fusion plasma diagnosis, in particular to a quasi-optical transmission device capable of adjusting the incident angle of microwaves, comprising: a Gaussian lens, a vacuum cavity, an ellipsoid mirror, a flange A, a flange B, a blind Plate, metal rod, plane mirror, sealing flange, screw and stepping motor; the device adjusts the microwave beam waist through Gaussian lens to reduce microwave transmission loss; adjusts the inclination of the plane mirror to achieve microwave incidence at different angles.
Description
Technical Field
The utility model belongs to the technical field of the controlled nuclear fusion plasma diagnosis, concretely relates to quasi-optical transmission device of adjustable microwave incident angle.
Background
Controlled nuclear fusion is very likely to be one of the ultimate approaches to thoroughly solve the human energy problem. However, there are macroscopic and microscopic instabilities in magnetically confined plasmas, which are a great challenge for tokomak devices to maintain long-term steady state operation. In order to deeply analyze the basic characteristics of the magnetofluid instability and the relevant excitation dependent parameters thereof, the microwave reflectometer becomes an important diagnosis for carrying out magnetofluid instability measurement on a great logarithm Tokamak device due to the sensitivity and the characteristic of no disturbance to plasma. Generally, microwave reflectometers can be classified into conventional reflectometers and doppler reflectometers according to the microwave angle of the incident plasma. The two reflectometers are the biggest difference in that the microwave is incident on the plasma at different angles; the microwave emitted by the conventional reflectometer is vertical to the incidence of the plasma, namely the incidence angle is 0; the Doppler reflectometer is injected into the plasma at a certain angle delta, and the relation between the incident angle and the turbulent wave number and incident wave number satisfies kt＝kisin (δ), it follows that the ability of doppler to measure turbulence is limited by the angle of incidence when the frequency of the microwaves is fixed. To achieve a beam with angular incidence, a common approach is to mount the doppler reflectometer at a position offset from the midplane. Conventional reflectometers are more sensitive to macroscopic instabilities, such as high energy particle modes, while doppler is more used for measurement of micro-turbulence. The two types of reflectometers are installed at different positions to meet the physical measurement requirements, but in the existing and future tokamak devices, the diagnosis window is extremely limited, so that effective measures must be taken to enable microwaves to enter plasma at different angles and to maximize the measurement capability of the reflectometers for turbulence of different characteristic dimensions.
Therefore, it is necessary to design a quasi-optical transmission device capable of adjusting the microwave incidence angle, so as to realize free switching between a conventional reflectometer and a doppler system by adjusting the microwave incidence angle, and realize turbulence measurement of different wave numbers.
SUMMERY OF THE UTILITY MODEL
The utility model aims at designing an adjustable microwave incident angle's quasi-optical transmission device, realize the free switching of conventional reflectometer and Doppler system through adjusting microwave incident angle for it is limited because of the diagnosis window in current and future tokamak device to solve, and inconvenient two kinds of reflectometers of installing simultaneously carry out the problem that magnetic current body instability measures diagnosis.
The technical scheme of the utility model:
a quasi-optical transmission device capable of adjusting the incident angle of microwave comprises a Gaussian lens, a vacuum cavity, an ellipsoidal mirror, a flange A, a flange B, a blind plate, a metal rod, a plane mirror, a sealing flange, a screw rod and a stepping motor;
a Gaussian lens is arranged at one end outside the vacuum cavity; a blind plate is fixed at the other end outside the vacuum cavity through a flange B;
the vacuum cavity is also provided with a screw rod, one end of the screw rod is arranged inside the vacuum cavity and connected with the plane mirror, and the other end of the screw rod is arranged outside the vacuum cavity and sequentially connected with a sealing flange and a stepping motor in series;
the metal rod is arranged in the vacuum cavity, and one end of the metal rod is connected with the plane mirror; the other end of the metal rod is connected with a blind plate;
the ellipsoidal mirror is fixed in the vacuum cavity;
the flange A is arranged outside the vacuum cavity and connected with the Tokamak vacuum chamber.
The vacuum cavity is integrally of a hollow L-shaped structure, and microwaves are emitted into the vacuum cavity through the Gaussian lens and then are emitted onto the ellipsoidal mirror.
The ellipsoidal mirror is fixed at the right-angle corner position in the vacuum cavity and can receive the microwave injected through the Gaussian lens;
the ellipsoidal mirror is also arranged in parallel with the plane mirror in the vacuum cavity, and the microwave reflected by the ellipsoidal mirror can be vertically emitted onto the plane mirror.
The flange A is arranged outside the vacuum cavity, the height of the flange A is the same as that of the position of the plane mirror arranged inside the vacuum cavity, and the microwave energy reflected by the plane mirror can be emitted into the Tokamak vacuum chamber through the flange A.
The integral structure of the flange A is an elliptical ring-shaped structure.
The whole vacuum cavity is made of stainless steel with low magnetic conductivity, one end of the sealing flange is fixed on the outer wall of the vacuum cavity, and the other end of the sealing flange is fixedly connected with the stepping motor.
The utility model has the advantages that:
the device designed by the utility model adjusts the microwave beam waist through the Gaussian lens to reduce the microwave transmission loss; microwave incidence at different angles is realized by adjusting the inclination of the second reflecting surface; the microwave device is protected by directly connecting the transmission device with the vacuum chamber; the utility model discloses still have following advantage: the device can flexibly adjust the incident angle of the microwave by controlling the parameters of the stepping motor; the quasi-optical transmission device is integrally connected with the vacuum chamber through a runway-type flange, the flange of the device is not sealed by a lens, and the sealed lens is at the rear end and cannot be polluted by plasma. The incident angle of the microwave is adjusted, so that the free switching between a conventional reflectometer and a Doppler system can be realized, and turbulence measurement on different wave numbers can be realized.
Drawings
Fig. 1 is a schematic structural view of a quasi-optical transmission device capable of adjusting an incident angle of microwave according to the present invention;
wherein: 1-gauss lens, 2-vacuum cavity, 3-ellipsoidal mirror, 4-flange A, 5-flange B, 6-blind plate, 7-metal rod, 8-plane mirror, 9-sealing flange, 10-screw rod and 11-stepping motor
Detailed Description
The invention will be further described with reference to the following drawings and examples:
the device adjusts the microwave beam waist through the Gaussian lens to reduce the microwave transmission loss; microwave incidence at different angles is realized by adjusting the inclination of the second reflecting surface, namely the plane mirror; the microwave device is protected by connecting the transmission device directly to the tokamak vacuum chamber.
The specific embodiment is as follows: a quasi-optical transmission device capable of adjusting the incident angle of microwave comprises a Gaussian lens 1, a vacuum cavity 2, an ellipsoidal mirror 3, a flange A4, a flange B5, a blind plate 6, a metal rod 7, a plane mirror 8, a sealing flange 9, a screw rod 10 and a stepping motor 11;
wherein, a Gaussian lens 1 is arranged at one end outside the vacuum cavity 2; a blind flange 6 is fixed at the other end outside the vacuum cavity 2 through a flange B5; the vacuum cavity 2 is also provided with a screw rod 10, one end of the screw rod 10 is arranged inside the vacuum cavity 2 and is connected with the plane mirror 8, and the other end of the screw rod 10 is arranged outside the vacuum cavity 2 and is sequentially connected with a sealing flange 9 and a stepping motor 11 in series; the metal rod 7 is arranged in the vacuum cavity 2, and one end of the metal rod 7 is connected with the plane mirror 8; the other end of the metal rod 7 is connected with the blind plate 6;
the whole vacuum cavity 2 is of a hollow L-shaped structure, the whole vacuum cavity 2 is made of stainless steel with low magnetic conductivity, and microwaves are emitted into the vacuum cavity 2 through the Gaussian lens 1 and then are emitted onto the ellipsoidal mirror 3.
The ellipsoidal mirror 3 is fixed at the right-angle corner position inside the vacuum cavity 2 and can receive the microwave injected through the Gaussian lens 1; the ellipsoidal mirror 3 is also arranged in parallel with the plane mirror 8 in the vacuum chamber 2, and the microwave reflected by the ellipsoidal mirror 3 can be vertically incident on the plane mirror 8.
The flange A4 overall structure is oval ring shape structure, and flange A4 sets up in the outside of vacuum chamber 2, is connected with the tokamak vacuum chamber, and flange A4 sets up the position in the outside of vacuum chamber 2 and the position height that level mirror 8 set up in the inside of vacuum chamber 2 is the same, and the microwave energy after passing through level mirror 8 reflection penetrates into the tokamak vacuum chamber through flange A4.
One end of the sealing flange 9 is fixed on the outer wall of the vacuum cavity 2, and the other end of the sealing flange 9 is fixedly connected with the stepping motor 11.
The method for adjusting the angle of the quasi-optical transmission device capable of adjusting the microwave incidence angle comprises the following steps:
the method comprises the following steps: the microwave is emitted into the vacuum cavity 2 through the Gaussian lens 1, and is emitted into the ellipsoidal mirror 3 after being converged in the vacuum cavity 2;
step two: the microwave is reflected by the ellipsoidal mirror 3 and is emitted onto a plane mirror 8 supported by a metal rod 7, at the moment, a stepping motor 11 is switched on, and a screw 10 moves left and right in the horizontal direction of the vacuum cavity 2 through the movement of the stepping motor 11;
step three: the screw 10 moves left and right and simultaneously drives the plane mirror 8 to rotate slightly at the same frequency in the vacuum chamber 2, so that the microwave reflected to the plane mirror 8 is incident into the plasma in the tokamak vacuum chamber through the flange A4 at a certain angle.
The utility model discloses the device is passed through flange A4 and is directly connected with the real empty room of ask mark device, and thereby it is kept away from and is avoided being plated the chemical contamination by plasma as sealed lens, gauss lens 1.
The method for adjusting the incident reflection angle of the microwave designed by the device can be used in the existing and future magnetic confinement nuclear fusion experiments and engineering, and has important application value.
Wherein flange a4 is not lensed and not sealed, and is directly pierced; flange B5 is sealed without a lens and is directly sealed using blind plate 6.
The present invention has been described in detail with reference to the accompanying drawings and examples, but the present invention is not limited to the above examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art. The present invention can adopt the prior art for the content which is not described in detail in the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462405.4U CN212967601U (en) | 2020-07-23 | 2020-07-23 | Quasi-optical transmission device capable of adjusting microwave incident angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021462405.4U CN212967601U (en) | 2020-07-23 | 2020-07-23 | Quasi-optical transmission device capable of adjusting microwave incident angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212967601U true CN212967601U (en) | 2021-04-13 |
Family
ID=75396413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021462405.4U Withdrawn - After Issue CN212967601U (en) | 2020-07-23 | 2020-07-23 | Quasi-optical transmission device capable of adjusting microwave incident angle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212967601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785606A (en) * | 2020-07-23 | 2020-10-16 | 核工业西南物理研究院 | A quasi-optical transmission device with adjustable microwave incident angle and its angle adjustment method |
-
2020
- 2020-07-23 CN CN202021462405.4U patent/CN212967601U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111785606A (en) * | 2020-07-23 | 2020-10-16 | 核工业西南物理研究院 | A quasi-optical transmission device with adjustable microwave incident angle and its angle adjustment method |
| CN111785606B (en) * | 2020-07-23 | 2024-07-16 | 核工业西南物理研究院 | Quasi-optical transmission device capable of adjusting microwave incidence angle and angle modulation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212967601U (en) | Quasi-optical transmission device capable of adjusting microwave incident angle | |
| CN203672702U (en) | Sample pond for solid ablation with laser | |
| CN108093550A (en) | A kind of new quick rotation high power electronic cyclotron wave transmitting antenna | |
| CN109729633A (en) | Linear Magnetic Confinement Plasma Device | |
| CN111785606B (en) | Quasi-optical transmission device capable of adjusting microwave incidence angle and angle modulation method thereof | |
| CN111664816A (en) | QTT antenna main reflection surface deformation detection method, correction method and detection device | |
| CN108956360B (en) | Magnetic suspension thermobalance based on photo-thermal rapid heating | |
| Wang et al. | Potential application of using vortex ring for personalized ventilation | |
| CN206341469U (en) | A kind of new quick rotation high power electronic cyclotron wave transmitting antenna | |
| CN112903950A (en) | Device suitable for high-temperature in-situ nondestructive testing of liquid metal battery | |
| CN208589548U (en) | A kind of circular waveguide leaky wave slot antenna based on TM01 mould | |
| CN205657179U (en) | Arrange microwave diagnostics antenna system in real empty room in | |
| Kolemen et al. | Real-time mirror steering for improved closed loop neoclassical tearing mode suppression by electron cyclotron current drive in DIII-D | |
| CN114397085A (en) | A vertical flow coupled gust generation system | |
| CN114415312A (en) | A lens barrel structure suitable for imaging with bright background | |
| CN110052606A (en) | Laser powder feeding additive manufacturing device and powder flow control method | |
| Liu et al. | Upgrade and application of the gas puff imaging system in EAST | |
| CN115691837A (en) | Tokamak plasma current profile on-line feedback control system and method | |
| CN205726637U (en) | The micro-burnt target of a kind of scanning | |
| Yoshimura et al. | Construction of 106G Hz ECH System on CHS | |
| CN117393183A (en) | A method for controlling the backflow of fuel particles at the plasma boundary using powder feedback injection | |
| CN116631655B (en) | Megawatt steady-state high-power conical water load | |
| CN215004019U (en) | Conical flow guiding device | |
| CN106847652B (en) | A kind of coaxial continuous wave Terahertz of gradual change tiltedly notes pipe | |
| Yano et al. | Improvement of field accuracy and plasma performance in the RT-1 device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20210413 Effective date of abandoning: 20240716 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20210413 Effective date of abandoning: 20240716 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |