CN104730567A - Attenuator - Google Patents
Attenuator Download PDFInfo
- Publication number
- CN104730567A CN104730567A CN201510112088.0A CN201510112088A CN104730567A CN 104730567 A CN104730567 A CN 104730567A CN 201510112088 A CN201510112088 A CN 201510112088A CN 104730567 A CN104730567 A CN 104730567A
- Authority
- CN
- China
- Prior art keywords
- attenuator
- mounting hole
- rotating disk
- graphite
- installation holes
- 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.)
- Pending
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The invention relates to an attenuator which comprises a fixing component, a first rotary table and a second rotary table. The fixing component is fixed to an optical table and sleeved with a connection shaft. The first rotary table is sleeved with the connection shaft and provided with first installation holes. Graphite attenuation slices are arranged in the first installation holes. The second rotary table is sleeved with the connection shaft and provided with second installation holes. Tungsten alloy attenuation slices are arranged in the second installation holes. The first installation holes and the second installation holes have position numbers in sequence. The thicknesses of the graphite attenuation slices in the first installation holes become larger in sequence. The thicknesses of the tungsten alloy attenuation slices in the second installation holes also become larger in sequence. When the first rotary table and the second rotary table rotate to the working positions, rays sequentially penetrate through the graphite attenuation slices in the first installation holes in the working position and the tungsten alloy attenuation slices in the second installation holes in the working position. According to the attenuator, in a single source radiation field, the dosage rates of the graphite attenuation slices and the tungsten alloy attenuation slices are adjustable, and the detection requirement of a nuclear radiation alarm is met.
Description
Technical field
The present invention relates to a kind of attenuator, particularly relate to a kind of attenuator utilizing two kinds of attenuators.
Background technology
The working range of the instrument such as nuclear radiation alarm covers 1000cGy/h to 0.1cGy/h, within the scope of so wide dose rate, merely by the change of distance, uses inverse square relation, is difficult to the requirement reaching dose rate detection.
Summary of the invention
The object of the invention is the defect for prior art, a kind of attenuator is provided, thus it is adjustable to realize dose rate in the radiation field of single source.
For achieving the above object, the invention provides a kind of attenuator, described attenuator comprises:
Fixed part, is fixed on optical table, and is socketed with coupling shaft;
First rotating disk, is socketed in described coupling shaft, and described first rotating disk has the first mounting hole, has graphite attenuator in described first mounting hole;
Second rotating disk, is socketed in described coupling shaft, and described second rotating disk has the second mounting hole, has tungalloy attenuator in described second mounting hole;
Wherein, described first mounting hole and the second mounting hole have location number in turn, the thickness being arranged on the graphite attenuator in described first mounting hole increases successively, the thickness being arranged on the tungalloy attenuator in described second mounting hole also increases successively, when described first rotating disk and the second turntable rotation are to working position, ray is successively by being in the described graphite attenuator in the first mounting hole of working position and the tungalloy attenuator in the second mounting hole.
Further, described first rotating disk is identical with the radius of the second rotating disk.
Further, described first mounting hole is identical with the radius of the second mounting hole, and described first mounting hole is in the first-class angle of circumference arrangement of the first sabot, and described second mounting hole is in the first-class angle of circumference arrangement of the second sabot.
Further, described first rotating disk has 10 mounting holes; The thickness of described graphite attenuator is 10-20mm; Described second rotating disk has 10 mounting holes, and the thickness of described tungalloy attenuator is 5-20mm.
Further, described attenuator also comprises first of control first rotating disk and controls motor, and second of control second rotating disk controls motor.
Attenuator of the present invention, achieved in the radiation field of single source by graphite attenuator and tungalloy attenuator, dose rate is adjustable, meets the testing requirement of nuclear radiation alarm.
Accompanying drawing explanation
fig. 1with
fig. 2for the signal of attenuator of the present invention
figureand side-looking
figure;
Embodiment
Below by
accompanying drawingand embodiment, technical scheme of the present invention is described in further detail.
fig. 1with
fig. 2for the signal of attenuator of the present invention
figureand side-looking
figure,
as schemedshow, attenuator of the present invention comprises: fixed part 1, coupling shaft 2, first rotating disk 31 and the second rotating disk 32.
Fixed part 1 is fixed on optical table, and is socketed with coupling shaft 2.First rotating disk 31 is socketed in coupling shaft 2, the first rotating disk 31 has in the first mounting hole 41, first mounting hole 41 and has graphite attenuator 51.Second rotating disk 32 is socketed in coupling shaft 2, the second rotating disk 32 has in the second mounting hole 42, second mounting hole 42 and has tungalloy attenuator 52.
Wherein, first mounting hole 41 and the second mounting hole 42 have location number in turn, the thickness being arranged on the graphite attenuator 51 in described first mounting hole 41 increases successively, the thickness being arranged on the tungalloy attenuator 52 in described second mounting hole 42 also increases successively, when described first rotating disk 31 and the second rotating disk 32 rotate to working position, ray is successively by being in the described graphite attenuator 51 in the first mounting hole 41 of working position and the tungalloy attenuator 52 in the second mounting hole 52.
Concrete, the first rotating disk 31 is identical with the radius of the second rotating disk 32, and such as diameter is 600mm.First mounting hole 41 is also identical with the radius of the second mounting hole 42, such as, be 70mm.First mounting hole 41 is in the first-class angle of circumference arrangement of the first rotating disk 31, and the second mounting hole 42 is in the first-class angle of circumference arrangement of the second rotating disk 32.
Further, the first mounting hole 41 and the second mounting hole 42 are 10, and the position of the graphite attenuator 51 on the first mounting hole 41 is 0-No. 9 positions.In like manner, the position of the tungalloy attenuator 52 on the second mounting hole 42 is also 0-No. 9 positions.
In addition, the thickness of graphite attenuator 51 is between 10-20mm, is arranged on 0-No. 9 positions according to thickness arithmetic progression.Similar, the thickness of tungalloy attenuator 52 is between 5-20mm, is arranged on 0-No. 9 positions according to thickness arithmetic progression.
Further, attenuator also comprises the first control motor and second and controls motor, controls the first rotating disk and the second rotating disk respectively.
When specific works, need by ray by the graphite attenuator of a certain position and tungalloy attenuator, control first and control motor, the graphite attenuator of desired location is adjusted to working position, control second and control motor, the tungalloy attenuator of desired location is adjusted to working position.Then, the radiation that radiation source sends by the graphite attenuator on working position and tungalloy attenuator, thus realizes decay.
Attenuator of the present invention, achieves in the radiation field of single source, the covering of 1000cGy/h to 0.1cGy/h dose rate scope, and achieves the detection of nuclear radiation alarm.
Dosemeter adopts Geiger-Mueller tube to measure radiation, just this GM pipe is made to produce one-time detection current impulse when ray each time to be managed by this GM and caused ionization, each pulse is detected by vacuum tube circuit and is recorded as a counting, and the displayed value of this dosemeter is the count value under selected pattern.Due to radioactive random character, therefore the count value detected by dosemeter changes for each minute, then comparatively correct when getting the reading in one period of averaging time, when the got time interval longer then average is more accurate.
Ray detection Co-60 radiation field adopts radiation source to fix usually, controls attenuator by electronic or starting switch.Thus realize ray control.In discharger exit, by using graphite attenuator and tungalloy attenuator suitably can weaken ray, to obtain different dose rate scopes, the range ability that expansion radiation field can cover.In order to reduce the low-energy component in the rear power spectrum of tungalloy decay, so have employed the mode of graphite attenuator, the Combination application of differential declines sheet can be realized.
Experiment measuring obtains the attenuation multiple of differential declines sheet, further by the combination of differential declines sheet, can realize larger attenuation multiple, depressant dose rate.By the design of tungalloy attenuator, achieve the actual attenuation of 7 times, 15 times, 75 times, 105 times, 525 times, 1125 times.Further by the thickness of adjustment tungalloy, the decay of 10,100,1000 integral multiples can be obtained.In actual use, by the adjustment of distance and the combination of decay, the covering of dose rate scope at 1000cGy/h to 0.1cGy/h can be realized.
Attenuator of the present invention, achieve in the radiation field of single source by graphite attenuator and tungalloy attenuator, dose rate can adjust in 1000cGy/h to 0.1cGy/h scope, meets the testing requirement of nuclear radiation alarm.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. an attenuator, is characterized in that, described attenuator comprises:
Fixed part, is fixed on optical table, and is socketed with coupling shaft;
First rotating disk, is socketed in described coupling shaft, and described first rotating disk has the first mounting hole, has graphite attenuator in described first mounting hole;
Second rotating disk, is socketed in described coupling shaft, and described second rotating disk has the second mounting hole, has tungalloy attenuator in described second mounting hole;
Wherein, described first mounting hole and the second mounting hole have location number in turn, the thickness being arranged on the graphite attenuator in described first mounting hole increases successively, the thickness being arranged on the tungalloy attenuator in described second mounting hole also increases successively, when described first rotating disk and the second turntable rotation are to working position, ray is successively by being in the described graphite attenuator in the first mounting hole of working position and the tungalloy attenuator in the second mounting hole.
2. attenuator according to claim 1, is characterized in that, described first rotating disk is identical with the radius of the second rotating disk.
3. attenuator according to claim 1, is characterized in that, described first mounting hole is identical with the radius of the second mounting hole, and described first mounting hole is in the first-class angle of circumference arrangement of the first sabot, and described second mounting hole is in the first-class angle of circumference arrangement of the second sabot.
4. attenuator according to claim 1, is characterized in that, described first rotating disk has 10 mounting holes; The thickness of described graphite attenuator is 10-20mm; Described second rotating disk has 10 mounting holes, and the thickness of described tungalloy attenuator is 5-20mm.
5. attenuator according to claim 1, is characterized in that, described attenuator also comprises first of control first rotating disk and controls motor, and second of control second rotating disk controls motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112088.0A CN104730567A (en) | 2015-03-13 | 2015-03-13 | Attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510112088.0A CN104730567A (en) | 2015-03-13 | 2015-03-13 | Attenuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104730567A true CN104730567A (en) | 2015-06-24 |
Family
ID=53454638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510112088.0A Pending CN104730567A (en) | 2015-03-13 | 2015-03-13 | Attenuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104730567A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017869A (en) * | 2016-05-16 | 2016-10-12 | 深圳市矽电半导体设备有限公司 | LED brightness test adjustment device and system |
| CN114442140A (en) * | 2022-01-04 | 2022-05-06 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338048A (en) * | 1999-01-29 | 2002-02-27 | 特罗克斯勒电子实验有限公司 | Apparatus and method for calibration of nuclear gauges |
| JP2003121392A (en) * | 2001-10-19 | 2003-04-23 | Mitsui Eng & Shipbuild Co Ltd | Radiation detector |
| JP2003310590A (en) * | 2002-04-23 | 2003-11-05 | Mitsubishi Electric Corp | Dose distribution measuring instrument |
| CN2738826Y (en) * | 2004-06-11 | 2005-11-09 | 北京正乾阳科技发展有限公司 | Low-dose radiating device for treating prostatosis |
| CN101309726A (en) * | 2005-02-28 | 2008-11-19 | 帕特里克·F·卡德曼 | Method and apparatus for modulating a radiation beam |
| CN101902965A (en) * | 2007-12-20 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | Stereo tube attenuation filter |
| CN202486073U (en) * | 2012-03-12 | 2012-10-10 | 中国科学院上海应用物理研究所 | X-ray intensity attenuator |
| CN103135119A (en) * | 2011-12-01 | 2013-06-05 | 中国辐射防护研究院 | Portable multi-range reference radiation device |
| CN203785987U (en) * | 2014-02-22 | 2014-08-20 | 南京必福斯核技术有限公司 | Improved nuclear radiation density detector |
| CN204009086U (en) * | 2014-07-09 | 2014-12-10 | 中国计量科学研究院 | Half value thickness regulating device |
| CN204515152U (en) * | 2015-03-13 | 2015-07-29 | 中国计量科学研究院 | Attenuator |
-
2015
- 2015-03-13 CN CN201510112088.0A patent/CN104730567A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338048A (en) * | 1999-01-29 | 2002-02-27 | 特罗克斯勒电子实验有限公司 | Apparatus and method for calibration of nuclear gauges |
| JP2003121392A (en) * | 2001-10-19 | 2003-04-23 | Mitsui Eng & Shipbuild Co Ltd | Radiation detector |
| JP2003310590A (en) * | 2002-04-23 | 2003-11-05 | Mitsubishi Electric Corp | Dose distribution measuring instrument |
| CN2738826Y (en) * | 2004-06-11 | 2005-11-09 | 北京正乾阳科技发展有限公司 | Low-dose radiating device for treating prostatosis |
| CN101309726A (en) * | 2005-02-28 | 2008-11-19 | 帕特里克·F·卡德曼 | Method and apparatus for modulating a radiation beam |
| CN101902965A (en) * | 2007-12-20 | 2010-12-01 | 皇家飞利浦电子股份有限公司 | Stereo tube attenuation filter |
| CN103135119A (en) * | 2011-12-01 | 2013-06-05 | 中国辐射防护研究院 | Portable multi-range reference radiation device |
| CN202486073U (en) * | 2012-03-12 | 2012-10-10 | 中国科学院上海应用物理研究所 | X-ray intensity attenuator |
| CN203785987U (en) * | 2014-02-22 | 2014-08-20 | 南京必福斯核技术有限公司 | Improved nuclear radiation density detector |
| CN204009086U (en) * | 2014-07-09 | 2014-12-10 | 中国计量科学研究院 | Half value thickness regulating device |
| CN204515152U (en) * | 2015-03-13 | 2015-07-29 | 中国计量科学研究院 | Attenuator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106017869A (en) * | 2016-05-16 | 2016-10-12 | 深圳市矽电半导体设备有限公司 | LED brightness test adjustment device and system |
| CN106017869B (en) * | 2016-05-16 | 2018-04-24 | 深圳市矽电半导体设备有限公司 | A kind of LED luminance test regulating device and system |
| CN114442140A (en) * | 2022-01-04 | 2022-05-06 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
| CN114442140B (en) * | 2022-01-04 | 2022-10-14 | 成都理工大学 | Variable radiation field multipurpose irradiation calibration device and use method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11675097B2 (en) | Methods for PET detector afterglow management | |
| Dwyer et al. | Measurements of X‐ray emission from rocket‐triggered lightning | |
| Jie et al. | Energy calibration of a BC501A liquid scintillator using a γ-γ coincidence technique | |
| CN104965216A (en) | Method for calibrating detection efficiency of detector based on radiation source on-orbit calibration system | |
| CN204515152U (en) | Attenuator | |
| CN104570048A (en) | Natural neutron spectrum measurement method | |
| CN104730567A (en) | Attenuator | |
| US6100530A (en) | Angular time synchronized directional radiation sensor | |
| Deuring et al. | Total cross section measurements for positron and electron scattering on molecular hydrogen between 8 and 400 eV | |
| Kelly et al. | Experiments on N− P Scattering with 260-Mev Neutrons | |
| US2950393A (en) | Gamma compensated neutron detector | |
| Peng et al. | Spectral lag of gamma‐ray bursts caused by the intrinsic spectral evolution and the curvature effect | |
| Oxley | Scattering of 25-87 mev photons by protons | |
| Yang et al. | Fast calibration methods using cosmic rays for a neutron detection array | |
| Hanna et al. | A directional gamma-ray detector based on scintillator plates | |
| CN105008961B (en) | By means of the radiation detector, especially X-radiation or the gamma radiation detector that are used in spectral patterns the dosimetry system that measures the method for dosage and use this method | |
| Kowash et al. | A rotating modulation imager for locating mid-range point sources | |
| JP5485451B1 (en) | Radiation measuring instrument calibration method and low energy scattered radiation calibration radiation irradiation apparatus therefor | |
| CN105403723A (en) | Motor rotating speed measurement method | |
| Iaria et al. | The BeppoSAX 0.1–18 keV spectrum of the bright atoll source GX 9+ 1: an indication of the source distance | |
| RU2578050C1 (en) | Downhole device with double-sided location measuring probes | |
| CN106959462A (en) | A kind of processing method of personal dosimeter's vibration proof and electromagnetic interference | |
| Pohl | A Variability and Localization Study of the Galactic Center Gamma-Ray Source 3EG J1746–2851 | |
| Smirnov et al. | An attempt to evaluate the structure of cometary dust particles | |
| CN114167483B (en) | Method for improving thermal neutron reference radiation field energy spectrum measurement efficiency |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |