CN103900562B - Detector during a kind of pulsar navigation roentgenometer - Google Patents
Detector during a kind of pulsar navigation roentgenometer Download PDFInfo
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- CN103900562B CN103900562B CN201410136387.3A CN201410136387A CN103900562B CN 103900562 B CN103900562 B CN 103900562B CN 201410136387 A CN201410136387 A CN 201410136387A CN 103900562 B CN103900562 B CN 103900562B
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- reflecting mirror
- conical shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C21/00—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00
- G01C21/02—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by astronomical means
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Abstract
The present invention relates to detector during a kind of pulsar navigation roentgenometer, including: nested conical shell reflecting mirror, magnetic deflector and X-ray detector; Wherein, parallel incident from pulsar or nearly parallel incidence X ray is converged near the conial vertex position of nested conical shell reflecting mirror by described nested conical shell reflecting mirror; Described magnetic deflector is arranged on the positive front end of described X-ray detector, it would be possible to the charged particle inciding X-ray detector deviates described X-ray detector; Described X-ray detector is arranged near the conial vertex position of described nested conical shell reflecting mirror, for X ray optical signal is changed into the signal of telecommunication, and by this signal of telecommunication plus time labelling.
Description
Technical field
The present invention relates to space flight field of detecting, detector during particularly to a kind of pulsar navigation roentgenometer.
Background technology
X-ray pulsar is a class x-ray source celestial body, its position coordinates is just as fixed star star catalogue, and additionally the X-ray pulsar rotation period is extremely stable again, so, pulsar can provide perfect georeferencing benchmark and time reference in theory, provides natural navigation beacon for spacecraft. It is a kind of new astronomical navigation method based on X-ray pulsar navigation, and during pulsar roentgenometer, detector is the core component of X-ray pulsar navigation.
Owing to the X-radiation intensity of pulsar is very faint, the detection instrument of development large effective area is the objective demand of pulsar navigation. X-ray pulsar timing detector in orbit is essentially all employing collimation-type gas detector to realize large-area detection demand at present. Collimation-type gas detector fill factor, curve factor is little, and detection efficient is high, relatively easily realizes large area, but its drawback is also clearly, shows that ambient interferences is big, and energy resolution is poor, and gas leakage has a big risk, and reliability is low in-orbit, and the life-span is short. So detector is the key technology carrying out pulsar navigation application when development large area, highly sensitive, lightweight, miniaturization, highly reliable pulsar roentgenometer.
Summary of the invention
It is an object of the invention to the defects such as the ambient interferences existing for X-ray pulsar timing detector of the prior art is big, energy resolution is poor, gas leakage has a big risk, reliability is low in-orbit, the life-span is short, thus detector when a kind of highly sensitive, highly reliable pulsar roentgenometer is provided.
To achieve these goals, the invention provides detector during a kind of pulsar navigation roentgenometer, including: nested conical shell reflecting mirror 1, magnetic deflector 2 and X-ray detector 3; Wherein, parallel incident from pulsar or nearly parallel incidence X ray is converged near the conial vertex position of nested conical shell reflecting mirror 1 by described nested conical shell reflecting mirror 1; Described magnetic deflector 2 is arranged on the positive front end of described X-ray detector 3, it would be possible to the charged particle inciding X-ray detector 3 deviates described X-ray detector 3; Described X-ray detector 3 is arranged near the conial vertex position of described nested conical shell reflecting mirror 1, for X ray optical signal is changed into the signal of telecommunication, and by this signal of telecommunication plus time labelling.
In technique scheme, described nested conical shell reflecting mirror 1 includes multiple coaxial assembling and conical shell reflecting mirror nested layer by layer, and the nested number of plies is at which floor between tens layers, and the conical tip of each conical shell reflecting mirror overlaps.
In technique scheme, each conical shell reflecting mirror includes a light inlet and a light-emitting window, and described light inlet radius is more than light-emitting window radius, and its section is an isosceles trapezoid.
In technique scheme, the inner surface of described conical shell reflecting mirror is the reflecting surface for X ray.
In technique scheme, the inner surface of described conical shell reflecting mirror is coated with the metal film of high atomic number.
In technique scheme, each conical shell reflecting mirror in described nested conical shell reflecting mirror 1 adopts lightweight plates glass heat ductile forming to obtain.
In technique scheme, the wall thickness of each conical shell reflecting mirror in described nested conical shell reflecting mirror 1 is less than 1mm, and inside surface roughness is better than 1nm.
In technique scheme, described magnetic deflector 2 adopts hollow cylindrical magnet structure.
In technique scheme, described X-ray energy detector 3 adopts silicon drifting detector, avalanche photodide or other silicon detector to realize.
It is an advantage of the current invention that:
1. during the pulsar navigation roentgenometer of the present invention, detector adopts nested conical shell reflecting mirror, the X ray light that can realize super large collects area, conical shell reflecting mirror has focusing effect simultaneously, after focusing, x-ray focal spot size is little, the detector of little sensitive area can be selected, be conducive to detecting more low-energy x-ray photon and time labelling faster.
2. the conical shell reflecting mirror of the present invention adopts business-like lightweight, ultra-thin, ultra-smooth plate glass, forms conical shell mirror surface by thermoplastic molding process, has that the lead time is short, lightweight, low cost and other advantages.
3. during the pulsar navigation roentgenometer of the present invention, detector adopts the light type of focusing of total reflection, then coordinates magnetic deflector, it is possible to effectively suppresses the interference of charged particle in space, strengthens detector sensitivity.
Accompanying drawing explanation
The structural representation of detector when Fig. 1 is the pulsar navigation roentgenometer of the present invention.
Drawing explanation
1 nested conical shell reflecting mirror 2 magnetic deflector
3X ray detector
Detailed description of the invention
In conjunction with accompanying drawing, the invention will be further described.
With reference to Fig. 1, during the pulsar navigation roentgenometer of the present invention, detector includes: nested conical shell reflecting mirror 1, magnetic deflector 2 and X-ray detector 3; Wherein, parallel incident from pulsar or nearly parallel incidence X ray is converged near the conial vertex position of nested conical shell reflecting mirror 1 by described nested conical shell reflecting mirror 1; Described magnetic deflector 2 is arranged on the positive front end of described X-ray detector 3, it would be possible to incide the charged particle deviation X-ray detector 3 of X-ray detector 3, it is to avoid X-ray detection is interfered; X-ray detector 3 is arranged near the conial vertex position of nested conical shell reflecting mirror 1, for X ray optical signal is changed into the signal of telecommunication, and by this signal of telecommunication plus time labelling.
Time below to pulsar navigation roentgenometer, all parts in detector is described further.
Described nested conical shell reflecting mirror 1 includes multiple coaxial assembling and conical shell reflecting mirror nested layer by layer. Each conical shell reflecting mirror includes a light inlet and a light-emitting window, and described light inlet radius is more than light-emitting window radius, and its section is an isosceles trapezoid. The inner surface of each conical shell reflecting mirror is the reflecting surface (therefore also the inner surface of conical shell reflecting mirror being called interior reflective surface in this application) for X ray, as a kind of preferred implementation, the interior reflective surface of conical shell reflecting mirror is coated with the metal film of high atomic number, to strengthen the reflectance to x-ray photon.The nested number of plies of described nested conical shell reflecting mirror 1 is at which floor between tens layers, and the conical tip of each conical shell reflecting mirror comprised essentially coincides. The conical tip overlapping position of each conical shell reflecting mirror i.e. the conical tip of described nested conical shell reflecting mirror 1.
Each conical shell reflecting mirror in described nested conical shell reflecting mirror 1 can adopt lightweight plates glass heat ductile forming to obtain, and wall thickness is less than 1mm, and inside surface roughness is better than 1nm(outer surface without particular/special requirement).
Described magnetic deflector 2 adopts hollow cylindrical magnet structure, it is ensured that the X ray of convergence can pass through and will not be blocked.
Described X-ray energy detector adopts silicon drifting detector, avalanche photodide or other silicon detector to realize, and it both can measure the energy of X ray, it is also possible to measure the intensity of X ray.
It should be noted last that, above example is only in order to illustrate technical scheme and unrestricted. Although the present invention being described in detail with reference to embodiment, it will be understood by those within the art that, technical scheme being modified or equivalent replacement, without departure from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention.
Claims (8)
1. detector during a pulsar navigation roentgenometer, it is characterised in that including: nested conical shell reflecting mirror (1), magnetic deflector (2) and X-ray detector (3); Wherein, parallel incident from pulsar or nearly parallel incidence X ray is converged near the conial vertex position of nested conical shell reflecting mirror (1) by described nested conical shell reflecting mirror (1); Described magnetic deflector (2) is arranged on the positive front end of described X-ray detector (3), it would be possible to the charged particle inciding X-ray detector (3) deviates described X-ray detector (3); Described X-ray detector (3) is arranged near the conial vertex position of described nested conical shell reflecting mirror (1), for X ray optical signal is changed into the signal of telecommunication, and by this signal of telecommunication plus time labelling;
Described nested conical shell reflecting mirror (1) includes multiple coaxial assembling and conical shell reflecting mirror nested layer by layer, and the nested number of plies is at which floor between tens layers, and the conical tip of each conical shell reflecting mirror overlaps.
2. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that each conical shell reflecting mirror includes a light inlet and a light-emitting window, described light inlet radius is more than light-emitting window radius, and its section is an isosceles trapezoid.
3. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that the inner surface of described conical shell reflecting mirror is the reflecting surface for X ray.
4. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that be coated with the metal film of high atomic number on the inner surface of described conical shell reflecting mirror.
5. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that each conical shell reflecting mirror in described nested conical shell reflecting mirror (1) adopts lightweight plates glass heat ductile forming to obtain.
6. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that the wall thickness of each conical shell reflecting mirror in described nested conical shell reflecting mirror (1) is less than 1mm, and inside surface roughness is better than 1nm.
7. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that described magnetic deflector (2) adopts hollow cylindrical magnet structure.
8. detector during pulsar navigation roentgenometer according to claim 1, it is characterised in that described X-ray energy detector (3) adopts silicon drifting detector, avalanche photodide or other silicon detector to realize.
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| CN201410136387.3A CN103900562B (en) | 2014-04-04 | 2014-04-04 | Detector during a kind of pulsar navigation roentgenometer |
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| CN103900562B true CN103900562B (en) | 2016-06-15 |
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| CN104835544B (en) * | 2015-03-18 | 2017-07-07 | 北京控制工程研究所 | A kind of space X ray shielding device for pulsar navigation |
| CN105093484B (en) * | 2015-08-27 | 2017-12-22 | 北京控制工程研究所 | A kind of multilayer nest circular conical surface type X ray grazing incidence optics camera lens |
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| US7435966B2 (en) * | 2003-01-28 | 2008-10-14 | Koninklijke Philips Electronics N.V. | X-ray detector |
| JP2005249559A (en) * | 2004-03-04 | 2005-09-15 | Shimadzu Corp | X-ray concentrator |
| CN2684211Y (en) * | 2004-03-23 | 2005-03-09 | 薛忠光 | A ray probe for nuclear medical imaging device |
| JP4860418B2 (en) * | 2006-10-10 | 2012-01-25 | 株式会社リガク | X-ray optical system |
| CN200989888Y (en) * | 2006-12-08 | 2007-12-12 | 上海酷健坊机电科技发展有限公司 | X-ray fluorescent analyzer utilizing capillary lens |
| CN100501331C (en) * | 2007-02-13 | 2009-06-17 | 北京空间飞行器总体设计部 | Navigation satellite autonomous navigation system and method based on X-ray pulsar |
| CN201368856Y (en) * | 2008-10-20 | 2009-12-23 | 北京师范大学 | Microbeam X-ray diffractometer based on capillary X-ray optical device |
| CN101561282B (en) * | 2009-05-22 | 2010-12-29 | 西安电子科技大学 | Detection system and method for pulsar weak signal based on FPGA |
| CN102128846A (en) * | 2010-12-22 | 2011-07-20 | 中国政法大学 | Quasi parallel beam capillary X-ray lens-based plastic material evidence detection spectrometer |
| CN102110486A (en) * | 2010-12-23 | 2011-06-29 | 北京师范大学 | Glass multi-capillary convergent collimator and X-ray pulsar detection device and method |
| CN102798883B (en) * | 2012-09-11 | 2015-03-25 | 西北核技术研究所 | Pulse X/gamma ray energy spectrum measurement device based on optical fiber array |
| CN103091700A (en) * | 2013-01-09 | 2013-05-08 | 中国科学院空间科学与应用研究中心 | Satellite-borne pulsar X-ray spectrometer |
| CN103630133B (en) * | 2013-12-05 | 2016-01-20 | 中国航天科技集团公司第五研究院第五一三研究所 | A kind of large planar array detector system based on microchannel plate |
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Address after: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee after: NATIONAL SPACE SCIENCE CENTER, CAS Address before: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee before: Space Science & Applied Research Centre, Chinese Academy of Sciences |
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