CN111190216B - Radiation flow detector array - Google Patents
Radiation flow detector array Download PDFInfo
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- CN111190216B CN111190216B CN202010075969.0A CN202010075969A CN111190216B CN 111190216 B CN111190216 B CN 111190216B CN 202010075969 A CN202010075969 A CN 202010075969A CN 111190216 B CN111190216 B CN 111190216B
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- 230000005855 radiation Effects 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 54
- 238000001914 filtration Methods 0.000 claims abstract description 37
- 238000009434 installation Methods 0.000 claims abstract description 19
- 238000005516 engineering process Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001052 transient effect Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 11
- 238000001228 spectrum Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 230000004927 fusion Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/10—Nuclear fusion reactors
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- Spectroscopy & Molecular Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The invention relates to a radiation flow detector array which comprises a mounting part, a band-pass filtering unit and a detecting unit, wherein the mounting part comprises a detecting unit mounting part, a band-pass filtering unit mounting part and a connecting part between the band-pass filtering unit mounting part and the band-pass filtering unit mounting part. After the detection unit cancels the vacuum sealing/shielding layer, the small-sized thin shell is realized, and the detection unit is further integrated into a compact multi-channel detector array. In the aspect of energy selection components, a transmission band-pass filtering technology is used, and a close-contact plug-in mounting structure is designed, so that the miniaturization and the quick replacement of energy selection devices of each detection channel are realized independently. Meanwhile, the detection unit improves the stability of the system by using a pulse working mode. The radiation flow detector array has the advantages of small volume, high stability, convenient installation and use, improved time/space resolution, and expansibility of the detection unit as a standardized array module.
Description
Technical Field
This patent belongs to laser fusion diagnostic field, concretely relates to radiant current detector array.
Background
In the development of laser fusion research work, along with the continuous and deep research of physical mechanisms, higher and higher requirements are put forward on conventional X-ray radiation flow and energy spectrum measurement.
In laser fusion research, the spectrometer used at present is formed by splicing single-channel radiation flow detectors, and because the radiation flow detectors serving as basic measurement units are large in size, a monochromatic energy selection light path needs to be established for each detection unit independently when energy spectrum measurement is carried out, the whole spectrometer system is quite large in size, and the problems of light path adjustment and aiming exist in the equipment installation process, so that the whole spectrometer system is relatively complex, and the difficulties are brought to transportation, installation, debugging and maintenance in the application process. Meanwhile, due to the defect that the detection unit is bulky, the spatial resolution capability of the system is greatly restricted when the energy spectrum/radiation flow is measured. In conclusion, the existing energy spectrum measuring system has the defects of complex structure, low reliability, large mass and low spatial resolution.
Disclosure of Invention
In view of the above, the present invention is directed to a radiation flow detector array with simple structure, high reliability and high resolution.
In order to achieve the purpose, the invention specifically adopts the following technical scheme:
the radiation flow detector array is characterized by comprising a plurality of band-pass filtering units and a plurality of detecting units which are arranged on a mounting base, wherein the tail end of each detecting unit is connected with an output interface.
The end face of one end, opposite to the band-pass filtering unit, of the detection unit is provided with a cathode face, and the end face of one end, opposite to the detection unit, of the band-pass filtering unit is used as an anode face.
The cathode surface is any one of Au, csI and Al.
The mounting base include detection unit installation department, band-pass filtering unit installation department, the detection unit installation department passes through the insulating part with band-pass filtering unit installation department and is connected.
The detection unit mounting part and the band-pass filtering unit mounting part are respectively provided with a plurality of array holes.
The detection unit installation part is made of stainless steel, and the band-pass filtering unit installation part is made of brass.
The installation part of the band-pass filtering unit is connected with a high-voltage loading cable.
The radiation flow detector array has the technical scheme that: 1, an integrated array design is adopted, and the expansion of a detection unit is realized by adopting a mode of repeatedly arranging and installing single-channel detectors in a traditional detection mode; 2, the detector array can realize the expansion of the detection area by splicing by adopting an expandable modular design, and the detection gap between adjacent modules is far smaller than the existing standard. 3, a close-proximity plug-in energy selection design is used for replacing a reflection energy selection scheme, so that the front end of the detector is prevented from needing a precise x-ray optical path system; 4, a pulse high-voltage loading design is used for replacing a direct-current working voltage design, so that the stability of the system is improved, and the shielding volume of a voltage-resistant structure is reduced.
The standard detection channel provided by the invention abandons a shell with the outermost layer playing a role in shielding and vacuum sealing in the traditional design, and a thin-shelled wrapping structure is newly designed outside the signal transmission unit, and plays a role in impedance matching and electromagnetic shielding. In the thin shell design, the outer diameter of the shell of the X-ray cathode surface is specially reduced to control the space of the arrayed detection units, so that the distribution of high-density detection units is realized. Corresponding to a small-volume and high-density detection unit structure, the existing multilayer mirror reflection energy selection mode cannot meet the space distribution requirement of the detector array in the invention, so that a close-proximity plug-pull energy selection structure is designed based on a transmission filtering technology to meet the space requirement of a miniaturized detector array, and independent energy selection of each detection unit is realized.
The detector array is designed in a standard modular mode, and the same module can be expanded and installed to realize the combination of multiple detection units.
The detector array disclosed by the invention is designed by adopting a close-contact plug-in energy selection device, is convenient to install and replace, and does not need light path adjustment and aiming.
The detector array of the invention adopts a pulse type working mode.
The detector unit of the present invention employs a simplified thin shell design.
The invention adopts an integrated array design.
Compared with the existing detector, the invention has the following advantages and characteristics:
1. the invention has simple structure, small volume and convenient installation, and can effectively improve the installation and use efficiency.
2. The invention is in modular design, has an expansion function and can increase the area of the detection array according to requirements.
3. The invention has high spatial resolution energy spectrum measurement capability.
4. The invention adopts a pulse high-voltage loading mode, thereby improving the system reliability and the limit time resolution.
Drawings
FIG. 1 is a schematic front view of a radiation flow detector array of the present invention;
FIG. 2 is a schematic view of a radiation flow detector array configuration of the present invention;
in the figure, 1, a detection unit installation part 2, a band-pass filtering unit 3, a band-pass filtering unit installation part 4, a detection unit 5, a signal output interface 6, a high-voltage loading cable 7, a cathode surface 8 and the front of a detector array are schematically arranged.
Detailed Description
The invention is further explained below with reference to the drawings.
In fig. 1 to 2, a radiation flow detector array includes a plurality of band-pass filter units 2 and a plurality of detection units 4 mounted on a mounting base, and an output interface 5 is connected to an end of each detection unit 4.
The band-pass filtering unit 2 adopts a flaked energy selection structure design based on a microchannel plate technology, and can adjust an X-ray energy selection section by changing the process parameters of the microchannel plate such as the length-diameter ratio, the chamfer angle and the like; the band-pass filtering unit 2 is embedded on the mounting part 3 in a plug-in manner, and the band-pass filtering unit 2 can be quickly replaced according to actual energy selection requirements; the detection unit 4 has no outer layer vacuum sealing and shielding structure, and is integrated into a channel array after being designed into a thin shell. A transient working electric field is formed between the right end face of the band-pass filtering unit 2 as an anode face loaded pulse working voltage and a cathode face 7 at the left end of the detection unit 4.
The invention relates to a densely-arranged multi-channel array, for example, nine miniaturized radiation flow detection units which are arranged in a 3 x 3 mode are arranged on the end face of a mounting base, and the center distance between the units is 13mm. The number of detection channels of the detector array in a unit area is improved by more than one order of magnitude compared with the traditional detector.
The working principle is as follows: the X-ray is selected through the band-pass filter unit and then acts on the cathode surface to generate photoelectrons, the photoelectrons fly away from the cathode under the action of an electric field formed between the anode surface and the cathode surface, and a current signal with time information consistent with that of the X-ray is formed on the cathode surface.
In addition, the radiation flow detector array is provided with a screw expansion connecting structure, so that splicing expansion of the detection units can be performed, and detection array modularization is realized.
In a preferred embodiment, the end surface of the end of the detection unit 4 opposite to the band-pass filter unit 2 is provided with a cathode surface 7, and the end surface of the end of the band-pass filter unit 2 opposite to the detection unit 4 is provided with an anode surface.
Furthermore, the cathode surface 7 is made of any one of Au, csI and Al.
Further, the mounting base comprises a detection unit mounting part 1 and a band-pass filtering unit mounting part 3, and the detection unit mounting part 1 and the band-pass filtering unit mounting part 3 are fixedly connected through an insulating part; the detection unit mounting part 1 and the band-pass filtering unit mounting part 3 are plate-shaped, and the insulating part can be designed into a connecting structure with any shape according to an actual scene, such as a clip structure and an annular structure, or the insulating part is designed into a structure consistent with the structure of the band-pass filtering unit mounting part in consideration of improving the stability of the detector array.
Further, a plurality of array holes are respectively formed in the detection unit installation part 1 and the band-pass filtering unit installation part 3, each array hole of the detection unit installation part 1 is used for installing each detection unit, and each array hole of the band-pass filtering unit installation part 3 is used for installing the band-pass filtering unit 2.
Further, the detection unit mounting part 1 may be made of stainless steel or aluminum, and the band pass filter unit mounting part 3 may be made of brass or aluminum, which are fixedly connected by an insulating member, which may be made of teflon.
In the radiation flow detector array, a detection unit mounting part 1 is grounded and connected with a detection unit 4, and a band-pass filtering unit mounting part 3 is connected with a high-voltage loading cable 6.
Claims (5)
1. The radiation flow detector array is characterized by comprising a plurality of band-pass filtering units (2) and a plurality of detecting units (4) which are arranged on a mounting base, wherein the tail ends of the detecting units (4) are connected with output interfaces (5); the end surface of one end of the detection unit (4) opposite to the band-pass filter unit (2) is provided with a cathode surface (7), and the end surface of one end of the band-pass filter unit (2) opposite to the detection unit (4) is provided with an anode surface; the band-pass filtering unit (2) is an energy selection structure for thinning based on a microchannel plate technology; the band-pass filtering unit (2) is embedded on the band-pass filtering unit installation part (3) in a close-contact plug-in manner, the detection unit (4) is free of an outer-layer vacuum sealing and shielding structure, the detection unit (4) is integrated into a channel array, the outer diameter of a shell of an X-ray cathode surface is reduced to control the distance between the detection units after array, and the band-pass filtering unit installation part (3) is connected with a high-voltage loading cable; a transient working electric field is formed between the anode surface loaded pulse working voltage and the cathode surface (7).
2. The radiation flow detector array of claim 1, wherein: the cathode surface (7) is any one of Au, csI and Al.
3. The radiation flow detector array of claim 1, wherein: the mounting base comprises a detection unit mounting part (1) and a band-pass filtering unit mounting part (3), and the detection unit mounting part (1) is connected with the band-pass filtering unit mounting part (3) through an insulating part.
4. The radiation flow detector array of claim 3, wherein: the detection unit mounting part (1) and the band-pass filtering unit mounting part (3) are respectively provided with a plurality of array holes.
5. The radiation flow detector array of claim 3, wherein: the detection unit mounting part (1) is made of stainless steel, and the band-pass filtering unit mounting part (3) is made of brass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010075969.0A CN111190216B (en) | 2020-01-23 | 2020-01-23 | Radiation flow detector array |
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| CN202010075969.0A CN111190216B (en) | 2020-01-23 | 2020-01-23 | Radiation flow detector array |
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| CN111190216A CN111190216A (en) | 2020-05-22 |
| CN111190216B true CN111190216B (en) | 2023-03-24 |
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