CN211928194U - Cosmic ray ionization quantity absolute measuring platform - Google Patents
Cosmic ray ionization quantity absolute measuring platform Download PDFInfo
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- CN211928194U CN211928194U CN202020279553.6U CN202020279553U CN211928194U CN 211928194 U CN211928194 U CN 211928194U CN 202020279553 U CN202020279553 U CN 202020279553U CN 211928194 U CN211928194 U CN 211928194U
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- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000005259 measurement Methods 0.000 claims abstract description 34
- 230000005865 ionizing radiation Effects 0.000 claims abstract description 16
- 238000012545 processing Methods 0.000 claims abstract description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 11
- 239000010935 stainless steel Substances 0.000 claims abstract description 7
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 5
- 239000010962 carbon steel Substances 0.000 claims abstract description 5
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 5
- 239000012498 ultrapure water Substances 0.000 claims description 8
- 239000012153 distilled water Substances 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 9
- 230000005855 radiation Effects 0.000 abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 238000000342 Monte Carlo simulation Methods 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 230000005358 geomagnetic field Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052705 radium Inorganic materials 0.000 description 1
- HCWPIIXVSYCSAN-UHFFFAOYSA-N radium atom Chemical compound [Ra] HCWPIIXVSYCSAN-UHFFFAOYSA-N 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model relates to a radiation monitoring field provides an absolute measuring platform of cosmic ray ionization volume, including support, support piece, main shielding layer, second shielding layer, ionizing radiation anti-scattering layer, the support adopts reinforced concrete processing to form, highly is not less than 5m, support piece, main shielding layer, second shielding layer, ionizing radiation anti-scattering layer have erect in proper order on the support, support piece adopts carbon steel processing to form, main shielding layer adopts low background lead processing to form, the second shielding layer adopts stainless steel shell and high pure water to fill and forms, ionizing radiation anti-scattering layer adopts high-purity copper, high-purity tin and organic glass to range upon range of forming. The utility model discloses the platform can reduce the total dose rate interference of the natural background of environment to below 0.5%, under the condition that single measurement is no longer than 15 minutes, reduces the measurement uncertainty of cosmic ray ionization volume to below 5%.
Description
Technical Field
The utility model relates to a radiation monitoring field, concretely relates to absolute measurement platform of cosmic ray ionization volume can provide a measurement calibration platform for radiation monitoring instrument cosmic ray ionization volume measurement.
Background
The cosmic rays are the main components of natural radiation in the environment, and after primary cosmic rays from a galaxy system enter the atmosphere, the composition, the intensity and the energy spectrum of cosmic ray particles are continuously changed along the height of the atmosphere due to a series of cascade processes and the absorption effect of the atmosphere on the cosmic rays. Meanwhile, due to the strong influence of the geomagnetic field and the modulation of the 11-year solar activity cycle, the height distribution of different years at different latitudes is different.
In the field of radiation environment monitoring, in order to accurately measure the radiation environment background of a region to be monitored, the influence of cosmic ray ionization quantity on a monitoring instrument needs to be deducted as accurately as possible. The measurement of the absolute ionization amount of cosmic rays is an industry difficult problem because the measurement value of cosmic rays deviates due to factors such as different latitudes, different altitudes, different weather conditions and different time periods.
At present, the commonly used measurement of the ionization quantity of the cosmic rays is realized by searching a natural lake (the water depth is more than or equal to 10 m) or a plateau area locally, directly measuring the background of the cosmic rays by using a monitoring instrument, and then correcting the interference of natural radionuclides uranium, thorium, radium, potassium and the like in water on the instrument to obtain the measurement result of the ionization quantity of the cosmic rays, which is used as the background of the radiation environment monitoring for deduction. This method is only a semi-quantitative correction scheme, since it is limited by the region and it is difficult to make an accurate measurement (interference from natural background). For the research of celestial physics, continuous measurement data is difficult to obtain, and the research of the correlation of some scientific data is limited.
Disclosure of Invention
The utility model aims at providing a make things convenient for absolute measuring platform of universe ray ionization volume of building in order to solve the difficult problem that universe ray ionization volume measured. The device can be arranged on the roof of a high-rise building, the mountain top or a peripheral iron tower without the high-rise building, can reduce the interference of the total dose rate of the natural background of the environment to be less than 0.5 percent, and can reduce the measurement uncertainty of the cosmic ray ionization quantity to be less than 5 percent under the condition that the single measurement does not exceed 15 minutes. Meanwhile, the device can realize the function of long-term observation and is suitable for developing the scientific research of cosmic ray monitoring caused by astronomical changes.
The utility model discloses during the actual application, at first use portable high-purity germanium detector and dose rate monitor to measure nature background gamma-ray energy spectrum and dose rate respectively. This data was entered into the monte carlo software as an environmental background source. And then, within the range of 1 m-20 m from the ground height, after loading an air medium, calculating the dose rate contribution value by using Monte Carlo simulation calculation software, and giving a reference height reduced to below 5%. And then loading the designed environment background shielding device (comprising a main shielding layer, a second shielding layer and an ionizing radiation anti-scattering layer) between the detector and the ground, and calculating the level of the design scheme which can be finally reduced. The design target value is to reduce the natural background interference level to be below 0.5%, and meanwhile, the detector is used for actually measuring the processed environment background shielding device, so that the background interference introduced by the used material is reduced to be below 0.5%. In order to realize comparison measurement, a comparison measurement platform without natural background shielding is manufactured at the same height and is made of a common steel structure.
The utility model aims at realizing through the following technical scheme: the cosmic ray ionization absolute measurement platform comprises a support, a support piece, a main shielding layer, a second shielding layer and an ionizing radiation anti-scattering layer, wherein the support is formed by processing reinforced concrete and is not lower than 5m in height, the support piece, the main shielding layer, the second shielding layer and the ionizing radiation anti-scattering layer are sequentially erected on the support, the support piece is formed by processing carbon steel, the main shielding layer is formed by processing low-background lead, the second shielding layer is formed by filling a stainless steel shell and high-purity water, and the ionizing radiation anti-scattering layer is formed by stacking high-purity copper, high-purity tin and organic glass.
In the technical scheme, the measuring platform is built in a range of 100m in diameter without a building or a mountain higher than the measuring platform.
In the technical scheme, a comparison measuring platform is arranged and used for measuring the background and evaluating the uncertainty of the result.
In the technical scheme, the main shielding layer adopts low-background lead, the thickness of the main shielding layer is 50mm, and the content of Pb-210 is lower than 50 Bq/kg.
In the technical scheme, the second shielding layer is formed by filling a stainless steel shell and high-purity water, and the high-purity water is secondary distilled water with the thickness of 200 mm.
In the technical scheme, the ionizing radiation anti-scattering layer is formed by processing high-purity copper, high-purity tin and organic glass, the thicknesses of the high-purity copper, the high-purity tin and the organic glass are all 5mm, the copper content of the high-purity copper is more than or equal to 99.9%, and the tin content of the high-purity tin is more than or equal to 99.9%.
The utility model discloses the absolute measuring platform of universe ray ionization volume can solve the simple limitation that relies on Tibet sheep eight well universe ray measurement and fresh water lake measurement in china, the device can install on high-rise building roof, the mountain top, or the periphery does not have high-rise building's iron tower, can reduce the total dose rate interference of the natural background of environment to below 0.5%, measure at the single time and be no longer than 15 minutes, combine contrast measuring platform data simultaneously, reduce the measurement uncertainty of universe ray ionization volume to below 2nGy/h (k = 2). Meanwhile, the device can realize the long-term observation function, solves the problems of cosmic ray longitude and latitude difference measurement, weather condition difference measurement, time period difference measurement and the like, and is suitable for developing the scientific research of cosmic ray monitoring caused by astronomical changes.
Drawings
Fig. 1 is a schematic view of the absolute measurement platform for cosmic ray ionization volume according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, but the examples should not be construed as limiting the present invention.
As shown in fig. 1, the implementation provides an absolute measurement platform for cosmic ray ionization amount, which comprises a support 1, a support 2, a main shielding layer 3, a second shielding layer 4 and an ionizing radiation anti-scattering layer 5, wherein the support 1 is formed by processing reinforced concrete, the height of the support is not less than 5m, the support 2, the main shielding layer 3, the second shielding layer 4 and the ionizing radiation anti-scattering layer 5 are sequentially erected on the support 1, the support 2 is formed by processing carbon steel with the diameter of 1500 × 100mm, the main shielding layer 3 is formed by processing ultralow background lead with the diameter of 1500 × 50mm, the second shielding layer 4 is formed by filling stainless steel shells with the diameter of 1500 × 200mm and high-purity water, and the ionizing radiation anti-scattering layer 5 is formed by stacking high-purity copper, high-purity tin and organic glass.
In the embodiment, the measuring platform is built in a diameter range of 100m without buildings or mountains higher than the measuring platform.
In the embodiment, the bracket 1 is processed by reinforced concrete, the height is not less than 5m, and the construction height of part of high background areas in China is more than 8 m.
In this embodiment, a control measurement platform 6 is provided for background measurement and result uncertainty assessment. The contrast measuring platform 6 is formed by processing carbon steel with the strength meeting the requirement, and the area is not less than 1 square meter.
In this embodiment, a temperature and humidity continuous measurement device is provided for checking or analyzing the ionization amount measurement result.
In this embodiment, the main shield layer 3 is made of low background lead and has a thickness of 50mm, wherein the content of Pb-210 is lower than 50 Bq/kg.
In this embodiment, the second shielding layer 4 is formed by filling a stainless steel shell with high-purity water, and the high-purity water is redistilled water with a thickness of 200 mm.
In this embodiment, the ionizing radiation anti-scattering layer 5 is formed by processing high-purity copper, high-purity tin and organic glass, wherein the thicknesses of the high-purity copper, the high-purity tin and the organic glass are all 5mm, and the diameters of the high-purity copper, the high-purity tin and the organic glass are all 1500 mm. The copper content of the high-purity copper is more than or equal to 99.9 percent, and the tin content of the high-purity tin is more than or equal to 99.9 percent.
Details not described in the present specification belong to the prior art known to those skilled in the art.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The cosmic ray ionization quantity absolute measuring platform is characterized in that: including support, support piece, main shielding layer, second shielding layer, ionizing radiation anti-scattering layer, the support adopts reinforced concrete processing to form, highly is not less than 5m, support piece, main shielding layer, second shielding layer, ionizing radiation anti-scattering layer are erect in proper order on the support, support piece adopts carbon steel processing to form, main shielding layer adopts low background plumbous processing to form, the second shielding layer adopts stainless steel shell and high pure water to fill and forms, ionizing radiation anti-scattering layer adopts high-purity copper, high-purity tin and organic glass to range upon range of and forms.
2. The absolute cosmic ray ionization measurement platform as claimed in claim 1 wherein: the measuring platform is built in a range of 100m in diameter without buildings or mountains higher than the measuring platform.
3. The absolute cosmic ray ionization measurement platform as claimed in claim 1 wherein: and setting a comparison measurement platform for measuring the background and evaluating the uncertainty of the result.
4. The absolute cosmic ray ionization measurement platform as claimed in claim 1 wherein: the main shielding layer adopts low-background lead and has the thickness of 50 mm.
5. The absolute cosmic ray ionization measurement platform as claimed in claim 1 wherein: the second shielding layer is formed by filling a stainless steel shell and high-purity water, and the high-purity water is secondary distilled water with the thickness of 200 mm.
6. The absolute cosmic ray ionization measurement platform as claimed in claim 1 wherein: the ionizing radiation anti-scattering layer is formed by processing high-purity copper, high-purity tin and organic glass, and the thicknesses of the high-purity copper, the high-purity tin and the organic glass are all 5 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020279553.6U CN211928194U (en) | 2020-03-10 | 2020-03-10 | Cosmic ray ionization quantity absolute measuring platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020279553.6U CN211928194U (en) | 2020-03-10 | 2020-03-10 | Cosmic ray ionization quantity absolute measuring platform |
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| Publication Number | Publication Date |
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| CN211928194U true CN211928194U (en) | 2020-11-13 |
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| CN202020279553.6U Active CN211928194U (en) | 2020-03-10 | 2020-03-10 | Cosmic ray ionization quantity absolute measuring platform |
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| Country | Link |
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| CN (1) | CN211928194U (en) |
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2020
- 2020-03-10 CN CN202020279553.6U patent/CN211928194U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Absolute measurement platform for cosmic ray ionization Effective date of registration: 20230315 Granted publication date: 20201113 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: SHAANXI QINZHOU NUCLEAR AND RADIATION SAFETY CO.,LTD. Registration number: Y2023610000179 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Granted publication date: 20201113 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: SHAANXI QINZHOU NUCLEAR AND RADIATION SAFETY CO.,LTD. Registration number: Y2023610000179 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Absolute measurement platform for cosmic ray ionization quantity Granted publication date: 20201113 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: SHAANXI QINZHOU NUCLEAR AND RADIATION SAFETY CO.,LTD. Registration number: Y2024980007560 |