CN105068105B - Accelerator head leakage rediation method of testing - Google Patents
Accelerator head leakage rediation method of testing Download PDFInfo
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- CN105068105B CN105068105B CN201510506153.8A CN201510506153A CN105068105B CN 105068105 B CN105068105 B CN 105068105B CN 201510506153 A CN201510506153 A CN 201510506153A CN 105068105 B CN105068105 B CN 105068105B
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- accelerator head
- thermoluminescence
- leakage rediation
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Abstract
The invention provides a kind of accelerator head leakage rediation method of testing, 24 test points are determined in accelerator head, thermoluminescent dosemeter is placed with each test point, each thermoluminescent dosemeter is while carry out leakage rediation detection to test point, and detection removes thermoluminescent dosemeter progress data and surveys reading after terminating.The thermoluminescent dosemeter cost that the present invention is used is low, in that context it may be convenient to be placed on test point, can disposably detect required point, substantially increase detection efficiency, and ensure that the accuracy of test point position, moreover it is possible to the risk that lowering apparatus is damaged.
Description
Technical field
The present invention relates to a kind of accelerator head leakage rediation method of testing.
Background technology
Accelerator head compromising emanation is the necessary detection project of accelerator detection project, it is necessary in accelerator open state
Under on distance focal point 1m sphere complete 24 points radiation detection.Existing method is exactly to utilize conventional radiation detector
Device is placed on the point of setting, and one point of a point completes detection, needs to pass in and out computer room repeatedly during detection, and in predetermined inspection
Detecting instrument is laid on measuring point very inconvenient, it is necessary to which configuring many supports could complete.If the larger accelerator of leakage rate, very
The range ability of conventional radiation detecting instrument may be exceeded, if not knowing in advance, not only can not accurately measure, can also damage inspection
Survey instrument.
The content of the invention
The invention provides a kind of program it is simple, while sampling, measuring accurate accelerator head leakage rediation test side
Method.
The technical solution adopted by the present invention is：
Accelerator head leakage rediation method of testing, it is characterised in that：24 test points are determined in accelerator head, often
Thermoluminescent dosemeter is placed with individual test point, each thermoluminescent dosemeter carries out leakage rediation detection to test point simultaneously,
Detection removes thermoluminescent dosemeter and carries out data survey reading after terminating.The thermoluminescent dosemeter cost that the present invention is used is low, Ke Yifang
Being placed on test point just, can disposably detect required point, substantially increase detection efficiency, and ensure that inspection
The accuracy of point position, moreover it is possible to the risk that lowering apparatus is damaged.
Further, the thermoluminescent dosemeter includes thermoluminescence element and measuring box, and the thermoluminescence element will for glass
Thermoluminescence material is wrapped to form ball-shaped structure, and the measuring box is the lucite ball being wrapped in outside thermoluminescence element.Metering
Box also acts as electronic equilibrium effect in addition to the function of having packaging thermoluminescence element, i.e., as buildup material, therefore the material of measuring box
Material must select the equivalent material of water, and most economical economical water equivalent material is exactly polymethyl methacrylate（PMMA）, that is, have
Machine glass.Because thermoluminescence element has a directionality when receiving ray, therefore by thermoluminescence material（White powder）Use glass
Glass is rolled into ball-shaped, thus with isotropic nature, and the wall thickness of glass marble is 0.5mm, and internal diameter is 3mm, effective volume
For 14 mm3.Due to needing isotropism, therefore, measuring box is also fabricated to organic glass marble.
Further, the thermoluminescence element uses the thermoluminescence material of muting sensitivity, such as LiF:Mg, Ti material（White
It is powdered）.Because accelerator head compromising emanation amount is larger, and energy is high, therefore thermoluminescence element uses the heat of muting sensitivity
Release luminescent material.
Further, the glass of the thermoluminescence element, using the excellent glass of hot property, is due to that thermoluminescence element is being examined
Need to be heated rapidly to 300 DEG C or so during survey.
Further, the thickness of the measuring box is determined according to the energy of ray, and for the ray of different-energy, test is maximum
The buildup material variable thickness sample that dose point needs, therefore corresponding measuring box is selected for ray energy during detection, for example examine
When surveying 10MV X-ray, the lucite ball for being just 15mm with radius, because the maximum dose point of 10MV X-rays is in water
At lower 15mm.
Further, two hemisphere of the measuring box are connected by coupling bar, when determining measuring box according to ray energy,
Facilitate measuring box assembling that thermoluminescence element is wrapped in into the inside.
Further, the thermoluminescent dosemeter is suspended on test point by plastic bar.
Beneficial effects of the present invention：The material and instrument cost used is low, in that context it may be convenient to be placed in measurement point, once
Property can detect required point, substantially increase detection efficiency, and ensure that the accuracy of test point position, moreover it is possible to drop
The risk of low instrument damage.
Brief description of the drawings
Fig. 1 is the structural representation of the thermoluminescent dosemeter of the present invention.
Fig. 2 is the episphere structural representation of the thermoluminescent dosemeter of the present invention.
Embodiment
The present invention is further described with reference to specific embodiment, but does not limit the invention to these tools
Body embodiment.One skilled in the art would recognize that present invention encompasses potentially included in Claims scope
All alternatives, improvement project and equivalents.
Reference picture 1, Fig. 2, accelerator head leakage rediation method of testing determine 24 test points in accelerator head,
Thermoluminescent dosemeter is placed with each test point, each thermoluminescent dosemeter carries out leakage rediation inspection to test point simultaneously
Survey, detection removes thermoluminescent dosemeter and carries out data survey reading after terminating.The thermoluminescent dosemeter cost that the present invention is used is low, can be with
It is conveniently placed on test point, can have disposably detected required point, substantially increase detection efficiency, and ensure that
The accuracy of test point position, moreover it is possible to the risk that lowering apparatus is damaged.
Thermoluminescent dosemeter described in the present embodiment includes thermoluminescence element 1 and measuring box 2, and the thermoluminescence element 1 is glass
Thermoluminescence material is wrapped to form ball-shaped structure by glass, and the measuring box 2 is the lucite being wrapped in outside thermoluminescence element 1
Ball.As buildup material, therefore measuring box 2 also acts as electronic equilibrium effect, i.e., in addition to the function of having packaging thermoluminescence element 1
The material of measuring box 2 must select the equivalent material of water, and most economical economical water equivalent material is exactly polymethyl methacrylate
（PMMA）, i.e. lucite.Because thermoluminescence element 1 has a directionality when receiving ray, therefore by thermoluminescence material（White
It is powdered）With glass-coated into ball-shaped, thus with isotropic nature, the wall thickness of glass marble is 0.5mm, and internal diameter is
3mm, effective volume is 14 mm3.Due to needing isotropism, therefore, measuring box 2 is also fabricated to organic glass marble.Thermoluminescence agent
Gauge small volume, light weight can very easily be placed on desired position.
Thermoluminescence element 1 described in the present embodiment is using the thermoluminescence material of muting sensitivity, such as LiF:Mg, Ti material（In vain
Color is powdered）.Because accelerator head compromising emanation amount is larger, and energy is high, therefore thermoluminescence element is using muting sensitivity
Thermoluminescence material.
The glass of thermoluminescence element 1 described in the present embodiment, using the excellent glass of hot property, is due to that thermoluminescence element exists
Need to be heated rapidly to 300 DEG C or so during detection.
The thickness of measuring box 2 described in the present embodiment determines that, for the ray of different-energy, test is most according to the energy of ray
The buildup material variable thickness sample that heavy dose point needs, therefore corresponding measuring box 2 is selected for ray energy during detection, for example
Detect 10MV X-ray when, the lucite ball for being just 15mm with radius because the maximum dose point of 10MV X-rays be
Under water at 15mm.
Two hemisphere of measuring box 2 described in the present embodiment are connected by coupling bar 3, and measuring box is being determined according to ray energy
When, facilitate measuring box 2 to assemble and thermoluminescence element 1 is wrapped in the inside.
Thermoluminescent dosemeter is suspended on test point by plastic bar described in the present embodiment.
Claims (6)
1. accelerator head leakage rediation method of testing, it is characterised in that：24 test points are determined in accelerator head, often
Thermoluminescent dosemeter is placed with individual test point, each thermoluminescent dosemeter carries out leakage rediation detection to test point simultaneously,
Detection removes thermoluminescent dosemeter and carries out data survey reading after terminating；The thermoluminescent dosemeter includes thermoluminescence element and metering
Box, the thermoluminescence element is that thermoluminescence material is wrapped to form ball-shaped structure by glass, and the measuring box is released to be wrapped in heat
Lucite ball outside optical element.
2. the accelerator head leakage rediation method of testing as described in claim 1, it is characterised in that：The thermoluminescence element
Using the thermoluminescence material of muting sensitivity.
3. the accelerator head leakage rediation method of testing as described in claim 1, it is characterised in that：The thermoluminescence element
Glass using the excellent glass of hot property.
4. the accelerator head leakage rediation method of testing as described in claim 1, it is characterised in that：The thickness of the measuring box
Degree is determined according to the energy of ray.
5. the accelerator head leakage rediation method of testing as described in claim 4, it is characterised in that：The two of the measuring box
Individual hemisphere is connected by coupling bar.
6. the accelerator head leakage rediation method of testing as described in one of claim 1 ~ 5, it is characterised in that：The heat is released
Fluorescent Densitomet is suspended on test point by plastic bar.
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Inventor after: Chen Rongmin Inventor after: Li Xuehua Inventor after: Xu Mingming Inventor after: Luo Cheng Inventor after: Huang Jiuzhu Inventor after: Guo Qian Inventor before: Chen Rongmin Inventor before: Li Xuehua Inventor before: Xu Mingming Inventor before: Luo Cheng Inventor before: Huang Jiuzhu Inventor before: Guo Qian |
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