CN106168674A - A kind of qualification device for scintillator detector - Google Patents
A kind of qualification device for scintillator detector Download PDFInfo
- Publication number
- CN106168674A CN106168674A CN201610602815.6A CN201610602815A CN106168674A CN 106168674 A CN106168674 A CN 106168674A CN 201610602815 A CN201610602815 A CN 201610602815A CN 106168674 A CN106168674 A CN 106168674A
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- Prior art keywords
- scintillator detector
- radiation part
- ring set
- scintillator
- detector
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/005—Details of radiation-measuring instruments calibration techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/20—Measuring radiation intensity with scintillation detectors
- G01T1/208—Circuits specially adapted for scintillation detectors, e.g. for the photo-multiplier section
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
The present invention relates to technical field of nuclear radiation measurement, particularly relate to a kind of qualification device for scintillator detector, including radiation part, extensible member and pedestal, radiation part includes housing and the chemical reagent being filled in housing, radiation part is 50cm with the vertical dimension of scintillator detector, one end of extensible member is connected with radiation part, and the other end is connected with pedestal, to adjust the height on radiation part distance ground.The radiation part being equipped with radioactive source is arranged at away from scintillator detector 50cm by the present invention, extensible member coordinates fixing support to radiate part with pedestal, regulation radiation part distance ground distance, to adapt to the performance detection of the scintillator detector to differing heights, operator can be by the real reaction of present invention scintillator detector after setting completed, judge the sensitive situation of scintillator detector, complete the qualification to scintillator detector.The simple in construction of the present invention, easy to assembly, small in volume, it is simple to carry and overhaul replacing.
Description
Technical field
The present invention relates to technical field of nuclear radiation measurement, particularly relate to a kind of qualification for scintillator detector and fill
Put.
Background technology
Scintillator detector belongs to the equipment in nuclear physics field at present, utilizes the sudden strain of a muscle that ionizing radiation produces in predetermined substance
Light detects, and is also to apply one of ionizing radiation detector most, widest at present, because of simple to operate, detection area
Greatly, it is quick on the draw and is widely used at the gate sentry of the units such as entry and exit port, customs and steel plant.In recent years due to China
The situation is tense in anti-terrorism, prevents from illegally entering China within the border for preventing external terrorist from carrying radioactivity secretly, the dependent part at each port
Door (including customs and inspection and quarantine bureau) configures scintillator detector in a large number in each entry and exit port.
Scintillator detector is only having a certain amount of radial objects just can be reported to the police by rear, and its essence is the thing passed through
The gamma ray that body produces is after scintillator, and the latter can produce photon, and photon produces electricity after the amplification of photomultiplier tube
Signal, then the signal of telecommunication demonstrates reading after the calculating of electronic circuit system.Once reading goes beyond the scope, and i.e. thinks and passes through
Object/pedestrian's radioactivity exceed standard.
Owing to the volume and weight of detector is relatively big, equipment must be fixed on ground with screw, cement during installing, because of
Equipment after this installs cannot move, if needing unloading process complex.This kind equipment is generally placed at gate sentry, suffers wind
Exposure to Sunlight, some areas day and night temperature difference and psychrometric difference change greatly, and extreme weather conditions is to the circuit board of detector and scintillator
Performance affects greatly, thus directly influences the accuracy of detector detection, causes wrong report and the generation failed to report.But it is above-mentioned
Unit be only used as user, one be nuclear physics specialty personnel less, two is the susceptiveness carrying out calibration equipment without radioactive source, reality
Border work is difficult to determine the situation of equipment.
Furthermore as it was previously stated, scintillator detector one to be volume and weight relatively big, be just fixed on use position once installing,
Being difficult to move, two is to use the quarantine of unit such as customs, Check and Examination of Port and steel plant to be mostly in suburbs, has inconvenient traffic, it is difficult to
Censorship.Therefore the use unit of scintillator detector is difficult to determine the quality of scintillator detector working condition at present.
Scintillator detector is generally placed in passage both sides, article or the radioactive dosage of pedestrian on sense channel.
Owing to scintillator detector is positioned at open air or gate sentry more, the burning sun lower performance on equipment of being exposed to the sun has affected.Make simultaneously
The quality of effective means checking detector is lacked with side.Therefore the duty of scintillator must be verified with radioactive source, and
Must be placed in reasonably measuring position, to detect the sensitivity of scintillator detector.
Summary of the invention
(1) to solve the technical problem that
The technical problem to be solved in the present invention is to solve existing scintillator detector to be difficult to verify its performance, really
The problem of its working condition quality fixed.
(2) technical scheme
In order to solve above-mentioned technical problem, the invention provides a kind of qualification device for scintillator detector,
Including radiation part, extensible member and pedestal, described radiation part includes housing and the chemical reagent being filled in described housing, described in put
The vertical dimension penetrating part and scintillator detector is 50cm, and one end of described extensible member is connected with described radiation part, the other end and
Described pedestal connects, to adjust the height on described radiation part distance ground.
Wherein, described chemical reagent is Th-232.
Wherein, the Th-232 after described chemical reagent is 3 layers of encapsulation process.
Wherein, described housing is for including the first ring set and the second ring set, and described first being provided with of ring set one end is prolonged to inner side
The edgewise stretched, the other end is connected with the threaded one end of described second ring set, and the other end of described second ring set also is provided with to inner side
The edgewise extended, the edgewise of the both ends of the surface of described radioactive source edgewise Yu described second ring set by being located at described first ring set respectively
Inner side end on.
Wherein, described extensible member includes that expansion link and telescoping tube, described telescoping tube are sheathed on described expansion link, described in stretch
The upper end of contracting bar is connected with described housing, and the lower end of described telescoping tube is connected with the slot of described pedestal.
Wherein, the outer wall of described second ring set is provided with handle, and described handle is connected with the upper end of described expansion link.
Wherein, also including laser range finder, described laser range finder is visited with scintillator for measuring described radiation part in real time
Survey the distance of device.
(3) beneficial effect
The technique scheme of the present invention has the advantage that the present invention qualification device for scintillator detector
Simulation pedestrian or the goods situation by scintillator detector, typically, detected radioactive source and the distance of scintillator detector
It is set as 50cm, is therefore arranged at being filled with the radiation part with corresponding radioactive chemical reagent from scintillator detector
At 50cm, extensible member coordinates fixing support radiate part and regulate radiation part distance ground distance, to adapt to different high with pedestal
The performance detection of the scintillator detector of degree, the scintillator detector alarming value set according to industry is as background values, operator
Can be by the real reaction of present invention scintillator detector after setting completed, it is judged that the sensitive situation of scintillator detector, complete
The qualification of scintillator detector in pairs.The simple in construction of the present invention, easy to assembly, small in volume, it is simple to carry and
Maintenance is changed.Can realize whenever and wherever possible the scintillator detector needed being verified.
Except the technical characteristic of technical scheme that described above present invention solves the technical problem that, constitute and there is this
Outside the advantage that the technical characteristic of a little technical schemes is brought, the other technologies feature of the present invention and these technical characteristics bring
Advantage, will further illustrate in conjunction with accompanying drawing.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention structural representation for the qualification device of scintillator detector；
Fig. 2 is that the A-A of Fig. 1 is to profile.
In figure: 1: radiation part；2: extensible member；3: pedestal；4: handle；11: the first ring sets；12: the second ring sets；21: flexible
Bar；22: telescoping tube.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained on the premise of not making creative work, broadly falls into the scope of protection of the invention.
In describing the invention, it should be noted that unless otherwise clearly defined and limited, term " is installed ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be fixing connection, it is also possible to be to removably connect, or be integrally connected；Can
To be mechanical connection, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, can understand that above-mentioned term is at this with concrete condition
Concrete meaning in invention.
Additionally, in describing the invention, except as otherwise noted, " multiple ", " many ", " many groups " be meant that two or
Two or more, " several ", " some ", " some groups " are meant that one or more.
As it is shown in figure 1, the qualification device for scintillator detector that the embodiment of the present invention provides, including radiation part
1, extensible member 2 and pedestal 3, radiation part 1 includes housing and the chemical reagent being filled in housing, and radiation part 1 detects with scintillator
The vertical dimension of device is 50cm, and one end of extensible member 2 is connected with radiation part 1, and the other end of extensible member 2 is connected with pedestal 3, to adjust
The whole radiation part 1 height apart from ground.
The present invention passes through scintillator detector for qualification unit simulation pedestrian or the goods of scintillator detector
Situation, typically, detected radioactive source is set as 50cm with the distance of scintillator detector, therefore will be filled with to have and put accordingly
The radiation part of the chemical reagent of penetrating property is arranged at away from scintillator detector 50cm, and extensible member coordinates fixing support to radiate with pedestal
Part also regulates radiation part distance ground distance, to adapt to the performance detection of the scintillator detector to differing heights, according to industry
The scintillator detector alarming value set can pass through present invention scintillator detector after setting completed as background values, operator
Real reaction, it is judged that the sensitive situation of scintillator detector, completes the qualification to scintillator detector.The knot of the present invention
Structure is simple, easy to assembly, small in volume, it is simple to carry and overhaul replacing.Can realize whenever and wherever possible to the scintillator needed
Detector verifies.
Wherein, chemical reagent is Th-232.The present invention utilizes in chemical reagent Th-232 the natural of thorium in four water thorium nitrates
Radioactivity produces gamma-rays and reaches 1.4 × 10 as radioactive source, the half-life of Th-23210Year, therefore radiate within service life
The activity changing value in source is substantially negligible to be disregarded, i.e. chemical reagent Th-232 can be in device service life as radioactive source
Its activity of interior guarantee is basicly stable constant, it is ensured that the standard when using the present invention that scintillator detector carries out test verification
Really property.
Concrete, chemical reagent is the Th-232 after 3 layers of encapsulation process.Th-232 mono-aspect of 3 layers of sealed-for-life can
To ensure optimum state when its activity is that scintillator detector carries out test verification, on the other hand it is possible to prevent radiation
The radiation in source leaks, it is ensured that the service life of device.
Wherein, as in figure 2 it is shown, housing includes the first ring set 11 and the second ring set 12, first ring set 11 one end be provided with to
The edgewise that inner side extends, the threaded one end of first ring set 11 other end and the second ring set 12 connects, the other end of the second ring set 12
Also being provided with the edgewise extended to inner side, the both ends of the surface of radioactive source are respectively by being located at the edgewise of the first ring set 11 and 12 second ring sets
On the inner side end of edgewise.The radiation part preferred fabrication of the present invention becomes sleeve-shaped housing, and chemical reagent is placed in sleeve-shaped housing
Inner side, it is gripped by the edgewise at ring set two ends, and the radiation part of the present embodiment is annular, makes the radiation of radioactive source
Even intensity is distributed.The first threaded ring set and the second ring set are easy to device in use, and radioactive source is on radiation part
Dismounting collection after fixing and having used is installed.
Further, extensible member 2 includes expansion link 21 and telescoping tube 22, and telescoping tube 22 is sheathed on expansion link 21, flexible
The upper end of bar 21 is connected with radiation part 1, and the lower end of telescoping tube 22 is connected with the slot of pedestal 3.Wherein, the outer wall of the second ring set 12
Being provided with handle 4, handle 4 is connected with the upper end of expansion link 21.Arranging handle on the lateral wall of annular radial part, handle is installed on
The rod end of the expansion link of extensible member, expansion link changes length in telescoping tube, thus changes the height on radiation part distance ground, this
The expansion link of embodiment coordinates with telescoping tube can make radiation part reach 3 meters of height.
It addition, the present invention also includes laser range finder, laser range finder for the qualification device of scintillator detector
Radiation part 1 and the distance of scintillator detector is measured in real time.After part, extensible member and pedestal assembling will be radiated, laser
The vertical dimension of stadia surveying radiation part distance scintillator detector, operator can record distance according to laser range finder,
The mobile pedestal that moves integrally, thus adjust radiation part with scintillator detector to suitable distance.
During use, chemical reagent Th-232 it is positioned over inside the first ring set of radiation part housing and props up the first ring set
Edgewise end face, is tightened in the end of thread of the first ring set by the second ring set, is fixed chemical reagent Th-232 implant with this, so
After the handle of radiation part is inserted expansion link, elongate expansion link and also stretch telescoping tube, length is being probably in scintillator detector
Heart point is to the distance on ground, finally in telescoping tube is fixed on the slot of pedestal, utilizes Laser Measuring distance metric, make radiation part with
The distance of detector is at 50cm, and adjusts the length of expansion link in good time.Scintillator detector all has setting alarming value, works as photon
Count alarm of soon sounding the when of exceeding background 3 times.Chemical reagent Th-232 in the present invention is positioned over distance scintillator
At detector 50cm, 3 times of its a little higher than background values of number of photons produced.Therefore, when scintillator detector normally works, press
The radiation part that chemical reagent Th-232 fills is had as radioactive source according to aforementioned erection, or the speed that simulation pedestrian, object pass through,
Scintillator detector should sound alarm, i.e. proves that equipment is in normal operating conditions.
In sum, the present invention passes through scintillator for qualification unit simulation pedestrian or the goods of scintillator detector
The situation of detector, typically, detected radioactive source is set as 50cm with the distance of scintillator detector, therefore will be filled with tool
The radiation part having corresponding radioactive chemical reagent is arranged at away from scintillator detector 50cm, and extensible member coordinates fixing with pedestal
Support radiation part and regulate radiation part distance ground distance, to adapt to the performance detection of the scintillator detector to differing heights,
Present invention scintillator after setting completed can be passed through as background values, operator according to the scintillator detector alarming value that industry sets
The real reaction of detector, it is judged that the sensitive situation of scintillator detector, completes the qualification to scintillator detector.This
The simple in construction of invention, easy to assembly, small in volume, it is simple to carry and overhaul replacing.Can realize whenever and wherever possible to needs
Scintillator detector verify.
Last it is noted that above example is only in order to illustrate technical scheme, it is not intended to limit；Although
With reference to previous embodiment, the present invention is described in detail, it will be understood by those within the art that: it still may be used
So that the technical scheme described in foregoing embodiments to be modified, or wherein portion of techniques feature is carried out equivalent；
And these amendment or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (7)
1. the qualification device for scintillator detector, it is characterised in that: include radiating part, extensible member and pedestal,
Described radiation part includes housing and the chemical reagent being filled in described housing, and described radiation part is vertical with scintillator detector
Distance is 50cm, and one end of described extensible member is connected with described radiation part, and the other end is connected with described pedestal, puts described in adjusting
Penetrate the height on part distance ground.
Qualification device for scintillator detector the most according to claim 1, it is characterised in that: described chemistry examination
Agent is Th-232.
Qualification device for scintillator detector the most according to claim 2, it is characterised in that: described chemistry examination
Agent is the Th-232 after 3 layers of encapsulation process.
Qualification device for scintillator detector the most according to claim 3, it is characterised in that: described housing bag
Include the first ring set and the second ring set, described first ring set one end be provided with to inner side extend edgewise, the other end and described second
The threaded one end of ring set connects, and the other end of described second ring set also is provided with the edgewise extended to inner side, the two of described radioactive source
End face is respectively by the inner side end of the edgewise of the edgewise Yu described second ring set of being located at described first ring set.
Qualification device for scintillator detector the most according to claim 4, it is characterised in that: described extensible member
Including expansion link and telescoping tube, described telescoping tube is sheathed on described expansion link, and the upper end of described expansion link is with described housing even
Connecing, the lower end of described telescoping tube is connected with the slot of described pedestal.
Qualification device for scintillator detector the most according to claim 5, it is characterised in that: described second ring
The outer wall of set is provided with handle, and described handle is connected with the upper end of described expansion link.
7. according to the qualification device for scintillator detector described in claim 1-6 any one, it is characterised in that:
Also including laser range finder, described laser range finder is for the distance of the described radiation part of measurement in real time with scintillator detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602815.6A CN106168674B (en) | 2016-07-27 | 2016-07-27 | A kind of qualification device for scintillator detector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610602815.6A CN106168674B (en) | 2016-07-27 | 2016-07-27 | A kind of qualification device for scintillator detector |
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| CN106168674B CN106168674B (en) | 2018-11-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107234486A (en) * | 2017-08-03 | 2017-10-10 | 四川明日宇航工业有限责任公司 | A kind of height adjustable device and the NC cutting tool effect device and application method using it |
| CN107643538A (en) * | 2017-10-18 | 2018-01-30 | 中国检验检疫科学研究院 | A kind of device for being used to verify scintillator detector performance |
| CN109212587A (en) * | 2018-08-10 | 2019-01-15 | 苏州速核仪器有限公司 | The measuring device of automatic amendment scintillation detector radiation detection efficiency |
| CN113093264A (en) * | 2021-04-08 | 2021-07-09 | 北京大学 | Ion beam detector |
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| CN101535835A (en) * | 2006-08-28 | 2009-09-16 | 热费希尔科学公司 | Methods and apparatus for performance verification and stabilization of radiation detection devices |
| CN101868836A (en) * | 2007-11-19 | 2010-10-20 | 皇家飞利浦电子股份有限公司 | A radiation detector comprising an imaging radiation-collimating structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107234486A (en) * | 2017-08-03 | 2017-10-10 | 四川明日宇航工业有限责任公司 | A kind of height adjustable device and the NC cutting tool effect device and application method using it |
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| CN113093264A (en) * | 2021-04-08 | 2021-07-09 | 北京大学 | Ion beam detector |
| CN113093264B (en) * | 2021-04-08 | 2024-04-30 | 北京大学 | Ion beam detector |
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| Publication number | Publication date |
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| CN106168674B (en) | 2018-11-20 |
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