CN203572949U - High-precision magnetic field inclination angle measurement system applied to Tokamak - Google Patents
High-precision magnetic field inclination angle measurement system applied to Tokamak Download PDFInfo
- Publication number
- CN203572949U CN203572949U CN201320759413.9U CN201320759413U CN203572949U CN 203572949 U CN203572949 U CN 203572949U CN 201320759413 U CN201320759413 U CN 201320759413U CN 203572949 U CN203572949 U CN 203572949U
- Authority
- CN
- China
- Prior art keywords
- magnetic field
- spectrometer
- inclination angle
- ccd camera
- tokamak
- 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.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 18
- 230000003287 optical effect Effects 0.000 claims abstract description 18
- 239000013307 optical fiber Substances 0.000 claims abstract description 10
- 230000010287 polarization Effects 0.000 abstract description 13
- 238000003745 diagnosis Methods 0.000 abstract 1
- 230000007935 neutral effect Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 241000220225 Malus Species 0.000 description 1
- 230000005699 Stark effect Effects 0.000 description 1
- 229920000535 Tan II Polymers 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical group O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000010885 neutral beam injection Methods 0.000 description 1
Images
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model belongs to the magnetic confinement plasma diagnosis field, and in particular relates to a high-precision magnetic field inclination angle measurement system applied to Tokamak based on a polarizer and spectrometer. The high-precision magnetic field inclination angle measurement system applied to Tokamak includes four optical collimating lenses, four polarizers, an optical fiber, an optical spectrometer, a CCD camera and a data acquisition control system; the four optical collimating lenses are connected with the spectrometer by the optical fiber; the spectrometer is connected with the CCD camera; the CCD camera is connected with the data acquisition control system; and one polarizer is arranged in front of each of the optical collimating lenses. The utility model has the advantages that: the system is good in reliability and quite high in measurement accuracy, can be used to measure the plasma magnetic field deflection angle, and can be used to carry out the high-precision measurement of other linearly polarized light polarization direction.
Description
Technical field
The invention belongs to magnetically confined plasma diagnostic field, be specifically related to a kind of measuring system of the pitch angle, magnetic field based on polaroid and spectrometer.
Background technology
In controlled nuclear fusion experimental study, for the magnetic confinement device of confining plasma, be mainly tokamak (or stellarator) device.Due to the drift of plasma, vertical of simple dependence is impossible realize the constraint of charged particle; Therefore must introduce a poloidal magnetic field, make resultant field form a kind of spiral helicine structure.The drift direction of this like-particles in plasma will change along with the variation of time, thus total drift cancel out each other, reach the object that particle is retrained preferably by magnetic field.
Factor of safety in Tokamak discharge or electric current distribution plasma transport process, MHD stability and energy constraint have a significant impact, in plasma balance and Instability Theory modeling effort, play key effect, to understand many physical phenomenons in Tokamak discharge (as the behavior of plasma sawtooth, transport the formation at base, neo-classicial tearing mode etc.) an Important Parameters.By measuring in plasma electric current distribution and it being carried out to FEEDBACK CONTROL, can plasma distribute and carry out ACTIVE CONTROL with binding feature, thereby realize high-performance Tokamak discharge.
Want to extrapolate factor of safety and electric current distribution, just must measure inclination angle, magnetic field on each magnetic surface, the inclination angle, magnetic field radially distributing.Because the information at inclination angle, magnetic field can be extrapolated by the linearly polarized light from corresponding Stark light beam, so can correctly and effectively survey the polarization direction of bundle emission spectrum, be the key point of this patent.
At present, the main method of the polarization direction of slotted line polarized light has analyzing instrument and polarization state measuring instrument etc.Analyzing instrument is mainly comprised of polaroid, it simple in structure, but its precision is very low, cannot to the magnetic core logical circuit deflection angle on tokamak device, measure at high speed; And polarization state measuring instrument is to the power requirement of input polarization light higher (at least needing nW level), and accuracy of detection and spectrally resolved on all cannot meet the measurement at magnetic core logical circuit deflection angle on tokamak device.
Summary of the invention
The object of this invention is to provide a kind of high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device, it can break through the restriction that common polarization state measuring instrument is subject to measuring lower powered partial line polarized light, and can measure at high speed the polarization angle lower than the partial line polarized light of 1nW power.
The present invention realizes like this, be applied to the high precision magnetic field Inclination Angle Measurement System of tokamak device, it comprises 4 optical collimation lenses, 4 polaroids, optical fiber, spectrometer, CCD camera and data acquisition control systems, 4 optical collimation lenses connect spectrometer by optical fiber, spectrometer is connected with CCD camera, CCD camera is connected with data acquisition control system, is provided with a polaroid before each optical collimation lens.
The minimum input optical power that CCD camera adopts is 0.1nW.
The angle of thoroughly shake direction and the horizontal direction of four polaroids is respectively 0, π/4, pi/2 and 3 π/4.
Advantage of the present invention is, the good reliability of system, and measuring accuracy is also very high, has both been applicable to the measurement at plasma magnetic core logical circuit deflection angle, is also applicable to the high-acruracy survey of other linearly polarized light polarization directions.
Accompanying drawing explanation
Fig. 1 is the formation block scheme of the high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device provided by the present invention;
Fig. 2 is the schematic diagram of the high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device provided by the present invention.
In figure, 1 fusionplasma, 2 neutral beam injection system, 3 neutral beam transmitting light beams, 4 polaroids, 5 optical collimation lenses, 6 optical fiber, 7 spectrometers, 8CCD camera, 9 data acquisition control systems.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail:
As illustrated in fig. 1 and 2, the high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device comprises 4 optical collimation lenses 5,4 polaroids 4, optical fiber 6, spectrometer 7, CCD camera 8 and data acquisition control systems 9.Carrying out the minimum input optical power that the CCD camera 8 of opto-electronic conversion adopts is 0.1nW.Can overcome due to low-intensity magnetic field or the not high weak Stark effect causing of neutral beam injecting power.
Wherein, 4 optical collimation lenses 5 connect spectrometer 7 by optical fiber 6, and spectrometer 7 is connected with CCD camera 8, and CCD camera 8 is connected with data acquisition control system 9, are provided with a polaroid 4 before each optical collimation lens 5.The angle of thoroughly shake direction and the horizontal direction of four polaroids is respectively 0, π/4, pi/2 and 3 π/4.Polarized light sees through four polaroids, utilizes Malus law, can obtain the polarization direction of polarized light.
As shown in Figure 2, when neutral beam is injected in fusionplasma 1, neutral beam and Plasma Interaction, send with the Stark light beam 3 of magnetic field obliquity information, this polarized light, through polaroid 4, transfers to laboratory by optical fiber 6 after collecting, then carry out light splitting by spectrometer 7 by optical collimation lens 5, imaging carry out opto-electronic conversion on CCD camera 8 afterwards, carries out data acquisition and storage by data acquisition control system 9.
Use measuring system of the present invention, the good reliability of system, measuring accuracy is also very high, has both been applicable to the measurement at plasma magnetic core logical circuit deflection angle, is also applicable to the high-acruracy survey of other linearly polarized light polarization directions.
Use high precision of the present invention magnetic field Inclination Angle Measurement System, through standard sources and polaroid polarization light output, according to CCD camera, record the strength ratio through the polarized light of different polarization sheet, just can be according to formula
Obtain the angle of non-complete linearly polarized light and surface level, thus the staking-out work of completion system.In above formula 0, the angle of thoroughly shake direction and the horizontal direction of π/4, pi/2 and 3 π/4 finger polaroids.
Claims (3)
1. be applied to the high precision magnetic field Inclination Angle Measurement System of tokamak device, it comprises 4 optical collimation lenses (5), 4 polaroids (4), optical fiber (6), spectrometer (7), CCD camera (8) and data acquisition control system (9), it is characterized in that: 4 optical collimation lenses (5) connect spectrometer (7) by optical fiber (6), spectrometer (7) is connected with CCD camera (8), CCD camera (8) is connected with data acquisition control system (9), the front polaroid (4) that is provided with of each optical collimation lens (5).
2. the high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device as claimed in claim 1, is characterized in that: the minimum input optical power that CCD camera (8) adopts is 0.1nW.
3. the high precision magnetic field Inclination Angle Measurement System that is applied to tokamak device as claimed in claim 1, is characterized in that: the angle of thoroughly shake direction and the horizontal direction of four polaroids is respectively 0, π/4, pi/2 and 3 π/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759413.9U CN203572949U (en) | 2013-11-26 | 2013-11-26 | High-precision magnetic field inclination angle measurement system applied to Tokamak |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320759413.9U CN203572949U (en) | 2013-11-26 | 2013-11-26 | High-precision magnetic field inclination angle measurement system applied to Tokamak |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203572949U true CN203572949U (en) | 2014-04-30 |
Family
ID=50540676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320759413.9U Expired - Lifetime CN203572949U (en) | 2013-11-26 | 2013-11-26 | High-precision magnetic field inclination angle measurement system applied to Tokamak |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203572949U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678330A (en) * | 2013-11-26 | 2015-06-03 | 核工业西南物理研究院 | High precision magnetic field tilt angle measuring system applied to tokamak device |
-
2013
- 2013-11-26 CN CN201320759413.9U patent/CN203572949U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678330A (en) * | 2013-11-26 | 2015-06-03 | 核工业西南物理研究院 | High precision magnetic field tilt angle measuring system applied to tokamak device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Rindani | Effect of anomalous tbW vertex on decay-lepton distributions in e+ e−→ tt and CP-violating asymmetries | |
| CN203930029U (en) | Be applied to the high precision magnetic field Inclination Angle Measurement System of magnetic trapped fusion apparatus | |
| Vanderhaeghen et al. | Long range structure of the nucleon | |
| Gårdestig | Extracting the neutron–neutron scattering length—recent developments | |
| CN104678330A (en) | High precision magnetic field tilt angle measuring system applied to tokamak device | |
| CN203572949U (en) | High-precision magnetic field inclination angle measurement system applied to Tokamak | |
| Ma | New type of double-slit interference experiment at Fermi scale | |
| CN105277906A (en) | High-precision magnetic field inclination angle measuring system applied to magnetic confinement fusion device | |
| Ahmed et al. | Fourth-generation standard model imprints in B→ K* ℓ+ ℓ− decays with polarized K | |
| Alvensleben et al. | Determination of the Photoproduction Phase of φ Mesons | |
| Sounas et al. | Beam size measurements based on movable quadrupolar pick-ups | |
| Myers et al. | Compton scattering from Li 6 at 86 MeV | |
| Manzolaro | Study, design and test of the Target-Ion Source system for the INFN SPES facility | |
| Snow et al. | Status of theory and experiment in hadronic parity violation | |
| Anastasi | The Calibration System of the E989 Experiment at Fermilab | |
| Pagan | Simulating Modifications to the P42 Beamline for the KLEVER Experiment | |
| Minty et al. | Measurement of beam optics during acceleration in the Relativistic Heavy Ion Collider | |
| Geer | How Many Muons Do We Need to Store in a Ring For Neutrino Cross-Section Measurements? | |
| Aschenauer et al. | RHIC spin program | |
| de Jager | Nucleon form factor experiments and the pion cloud | |
| Miller et al. | In situ testing of EHT integrators on a tokamak | |
| Bunce et al. | RHIC Spin-Physics Program | |
| Hauptmana et al. | LC Detector R&D proposals from the 4th Concept | |
| Darwisha et al. | Study of coherent π0–photoproduction on the deuteron | |
| Kawasaki | Simulation Study for Measurement of CP violation in B→ charmonium+ Ks at KEK B-factory |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140430 |
|
| CX01 | Expiry of patent term |