CN102033239B - X-ray energy measuring system for accelerator - Google Patents
X-ray energy measuring system for accelerator Download PDFInfo
- Publication number
- CN102033239B CN102033239B CN 201010233181 CN201010233181A CN102033239B CN 102033239 B CN102033239 B CN 102033239B CN 201010233181 CN201010233181 CN 201010233181 CN 201010233181 A CN201010233181 A CN 201010233181A CN 102033239 B CN102033239 B CN 102033239B
- Authority
- CN
- China
- Prior art keywords
- ray
- accelerator
- energy
- detector
- sniffer
- 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.)
- Active
Links
- 238000010521 absorption reaction Methods 0.000 claims abstract description 76
- 238000003860 storage Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 231100000987 absorbed dose Toxicity 0.000 claims description 14
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 5
- 230000009102 absorption Effects 0.000 description 63
- 239000007787 solid Substances 0.000 description 12
- 238000005259 measurement Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- 238000001228 spectrum Methods 0.000 description 7
- 238000000904 thermoluminescence Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000003595 spectral effect Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000013077 target material Substances 0.000 description 2
- 230000005461 Bremsstrahlung Effects 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The invention discloses an X-ray energy measuring system for an accelerator, comprising an X-ray dosage detection device, a collection device and a discriminator, wherein the X-ray dosage detection device comprises a plurality of detectors which are arranged at intervals in parallel, wherein signals of adjacent detectors are isolated so as to prevent signal crosstalk between each detector; a collection device; and a comparison device which includes a storage unit for storing a standard absorption curve of a standard energy accelerator on the X-ray dosage detection device, wherein the X-ray detection device is exposed through a series of standard energy accelerators so as to obtain a series of standard absorption curves corresponding to the energy stages of the series of standard energy accelerators; and a computation unit for executing comparison of the absorption curves with the standard absorption curves so as to determine the energy the accelerator to be detected.
Description
Technical field
The present invention relates to energy, the power spectrum feature measurement field of accelerator x-ray source.More particularly, the present invention relates to a kind of system for the energy of measuring the accelerator X ray.The present invention adopts the transmission beam method principle, with the disposable exposure method of multi-layer detector group, obtains the absorption curve of accelerator dosage in this group detector, is aided with standard energy accelerator dosage absorption curve and searches and contrast, and correctly determines accelerator energy fast.
Background technology
The accelerator x-ray source is by microwave accelerating tube or current in electrostatic accelerating tube etc. electronics to be accelerated to very high-energy, when the electron bombard target material, because bremsstrahlung, be that a large amount of X ray appear in rotational symmetry with the electron motion direction, the average energy of X ray, power spectrum, angle distribution, dosage etc. are relevant with electron energy, intensity and target material properties thickness etc.The accelerator x-ray source is widely used in medical diagnosis and treatment, industrial irradiation processing, irradiation imaging flaw detection and inspection and scientific research.Because characteristics such as the energy of accelerator x-ray source, power spectrum, angle distributions, dosage are radiation protection, radiation physics effect, the radiant image index is calculated and the important evidence of design, therefore correctly measure that accelerator is exported X ray energy (reduced energy), power spectrum is extremely important.
The output photon density of accelerator x-ray source is very big, measure the single photon energy by spectrometer and determine that accelerator x-ray source energy and power spectrum are difficult for realizing, and by measuring simple relatively dosage attenuation law, derivation accelerator energy and power spectrum, it is method commonly used at present, mainly contain: 1, dosage half value journey attenuation measurement method contrasts with standard energy accelerator dosage half value journey attenuation meter; 2, measure the transmission doses attenuation law, use the process simulation calculating of illiteracy card and mathematics and iterate recovery accelerator ray energy spectrum; 3, by measuring dosage die-away curve and typical curve search method in the 3 d water tank.The surveying work amount that has in the said method is big and loaded down with trivial details, and the needs that have are used a large amount of mathematical tools and derived, and uses difficulty at the scene with in the production.
Correspondingly, need a kind of improved accelerator X ray energy gauge, it can fast, correctly measure energy and/or the spectral characteristic of accelerator X ray.
Summary of the invention
Purpose of the present invention is intended to solve in the prior art the problems referred to above of determining accelerator energy or existing can spectral property time the and at least one aspect of defective, for example the surveying work amount big and loaded down with trivial details, need use a large amount of mathematical tools and derive, be difficult for quick and convenient measurement.
Correspondingly, one of purpose of the present invention is to provide a kind of accelerator X ray energy gauge, and it can fast, correctly survey the energy of speed setter X ray.
According to an aspect of the present invention, it provides a kind of system for the energy of measuring the accelerator X ray, comprise: the x-ray dose sniffer, it comprises a plurality of detectors that are parallel to each other and isolate setting, the X ray that sends from accelerator to be detected is directed on a plurality of detectors, to survey the dosage of the X ray that absorbs in each detector, wherein carry out signal between the adjacent detector and isolate, to prevent producing signal cross-talk between each detector; Gathering-device, for the data of the dosage of collecting the X ray that absorbs corresponding to each detector, and the absorption curve of acquisition X ray absorbed dose on described x-ray dose sniffer; And comparison means, for the benchmark absorption curve on described x-ray dose sniffer compares with described absorption curve and standard energy accelerator, to determine the energy of described accelerator to be detected, wherein said comparison means comprises: storage unit, be used for the benchmark absorption curve of storage standards energy accelerator on described x-ray dose sniffer, wherein by series of standards energy accelerator is exposed to described x-ray dose sniffer, obtain a series of benchmark absorption curves corresponding with the energy rank of series of standards energy accelerator; And computing unit, be used for to carry out that described absorption curve and described benchmark absorption curve are compared, with the energy of definite described accelerator to be detected.
Preferably, described system for the energy of measuring the accelerator X ray also comprises: collimating apparatus, the X ray that sends from accelerator to be detected collimates through collimating apparatus, a plurality of detectors on the X ray guiding x-ray dose sniffer after will collimating then.
In a kind of embodiment, described gathering-device comprises: a plurality of conversion elements, and each conversion element and corresponding detector coupling are used for converting X ray to electric signal at each detector absorbed dose; And a plurality of amplifiers, each amplifier and corresponding conversion element coupling are used for electric signal is carried out linearity amplification.
Particularly, described detector can be one of solid scintillation detector, gas detector, semiconductor detector and thermoluminescence sheet.
Preferably, the system that should be used for the energy of measurement accelerator X ray also comprises: means for correcting, difference based on the parameter characteristic of each detector and amplifier, original absorption curve to X ray absorbed dose on described x-ray dose sniffer of obtaining is proofreaied and correct, to obtain the absorption curve of X ray absorbed dose on described x-ray dose sniffer.
Preferably, the system that should be used for the energy of measurement accelerator X ray also comprises: collimating apparatus is used for the X ray that sends from accelerator to be detected is collimated; And shield, be used for shielding from the scattering low energy X ray around the sniffer.
Particularly, described detector can be solid scintillation detector, gas detector, semiconductor detector or thermoluminescence sheet; And described conversion element can be light activated element or charge receiver.
Particularly, described storage unit can be nonvolatile memory, ROM, RAM or flash memory; Described computing unit can be microcomputer or microprocessor.
Compare with prior art, the present invention have the integrated level height, simple to operate, equipment scale is little; Characteristics such as disposable exposure and fast definite accelerator energy are applicable to consistency of performance check and verification and the demarcation of on-the-spot accelerator energy when accelerator is produced in batches.In addition, wide accommodation of the present invention, production cost is low, and operation and use can make things convenient for, and can be used for various purpose accelerator energies measurements and checking.
Description of drawings
Fig. 1 is the synoptic diagram according to the system of the energy that is used for measurement accelerator X ray of the specific embodiment of the present invention.
Fig. 2 is according to the composition of the x-ray dose sniffer in a kind of embodiment of the present invention and the synoptic diagram of mounting structure, wherein Fig. 2 A is the composition structural drawing that adopts the x-ray dose sniffer of solid scintillation detector form, and Fig. 2 B shows solid scintillation detector among Fig. 2 A and the mounting structure figure between collimating apparatus and the shield.
Fig. 3 is the process flow diagram according to the accelerator X ray energy measurement method of a kind of embodiment of the present invention.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technical scheme of the present invention is described in further detail.In instructions, same or analogous drawing reference numeral is indicated same or analogous parts.Following explanation to embodiment of the present invention is intended to present general inventive concept of the present invention is made an explanation with reference to accompanying drawing, and not should be understood to a kind of restriction of the present invention.
Referring to Fig. 1, it shows the synoptic diagram according to the system of the energy that is used for measurement accelerator X ray of a kind of embodiment of the present invention.Referring to, system 100 according to a kind of energy for the X ray of measuring accelerator 10 of a kind of embodiment of the present invention, comprise: x-ray dose sniffer 20, it comprises a plurality of detectors 21 that are parallel to each other and isolate setting, the X ray that sends from accelerator to be detected 10 is directed on a plurality of detectors 21, to survey the dosage of the X ray that absorbs in each detector 21; Gathering-device 30 is used for collection corresponding to the data of the dosage of the X ray of each detector 21 absorptions, and obtains X ray at the absorption curve of the dosage of described x-ray dose sniffer 20 absorptions; And comparison means 40, be used for that the benchmark absorption curve on described x-ray dose sniffer 20 compares with described absorption curve and standard energy accelerator, with the energy of definite described accelerator 10 to be detected.
Referring to Fig. 2 A, it shows the composition structural drawing of the x-ray dose sniffer that adopts the solid scintillation detector form.A plurality of detectors 21 with side by side and the stacking pattern setting that is parallel to each other substantially form detector set, wherein adjacent two detectors 21 are arranged to carry out each other signal and are isolated, for example light is isolated, to prevent producing crosstalking of signal between each detector 21.Described detector can adopt various forms, for example can be one of solid scintillation detector, gas detector, semiconductor detector and thermoluminescence sheet.Referring to shown in Figure 1, when from the X ray of accelerator to be detected 10 right side direction to the left from Fig. 1, when namely substantially being directed on a plurality of detectors 21 perpendicular to the stack direction of a plurality of detectors 21, X ray pass successively in a plurality of detectors 21 partly or entirely, and absorbed corresponding dosage by each detector 21.When the X ray from accelerator 10 for example was injected into solid scintillation detector 21, the energy conversion of X ray became luminous energy, in order to prevent producing crosstalking of signal between each detector 21, need carry out light to each solid scintillation detector 21 and isolate.Similarly, when the detector that adopts other type, for example during gas detector, when the X ray from accelerator 10 for example is injected into gas detector 21, the energy conversion of X ray becomes electric energy, in order to prevent producing crosstalking of signal between each detector 21, need carry out electricity to each detector 21 and isolate.Though, in the above-described embodiment, X ray from accelerator to be detected 10 is directed on a plurality of detectors 21 along the stack direction of cardinal principle perpendicular to a plurality of detectors 21, but the present invention is not limited to this, and X ray can incide a plurality of detectors 21 along any suitable angle.
In the above-described embodiment, the energy accelerator of having been demarcated as the standard use existing or that provide in advance is provided the standard energy accelerator.After above-mentioned x-ray dose sniffer 20 is provided, by series of standards energy accelerator is exposed respectively to above-mentioned x-ray dose sniffer 20, namely can obtain a series of benchmark absorption curves corresponding with the energy rank of standard energy accelerator.Referring to Fig. 2 A, gathering-device 30 comprises: a plurality of conversion elements 31, and each conversion element 31 and 21 couplings of a corresponding detector are used for converting X ray to electric signal at the dosage that each detector 21 absorbs; And a plurality of amplifiers 32, each amplifier 32 and 31 couplings of a corresponding conversion element are used for electric signal is carried out linearity amplification.The form of conversion element 31 is determined according to the form of detector.For example, when described detector was solid scintillation detector or thermoluminescence sheet, described conversion element was light activated element, for example silicon photodiode or charge receiver.
When the X ray from accelerator 10 for example was injected into solid scintillation detector 21, the energy conversion of X ray became luminous energy.With each conversion element 31 of a corresponding detector 21 couplings, for example the silicon photodiode is used for converting X ray to electric signal at the dosage that each detector 21 absorbs.In a kind of preferred implementation, each amplifier 32 and 31 couplings of a corresponding conversion element are used for that electric signal is carried out linearity and amplify, to obtain electric signal amplification, that be convenient to handle.
Referring to Fig. 2 B, it shows solid scintillation detector among Fig. 2 A and the mounting structure figure between collimating apparatus 11 and the shield 12.Be assembled in the cavity in the shield 12 similarly along the direction of arrow among the figure to detector assembly among Fig. 1, in Fig. 2, the detector 20 among Fig. 2 A is by in the cavity that is encased in then after right rotation 90 degree among Fig. 2 in the shield 12, shown in Fig. 2 B.In order to eliminate the interference of scattered x-ray, dispose a collimating apparatus 11 at the system front end for the energy of measuring the accelerator X ray according to the present invention, the X ray that sends from accelerator to be detected 10 collimates through collimating apparatus 11, a plurality of detectors 21 on the X ray guiding x-ray dose sniffer 20 after will collimating then.Particularly, by alignment procedure, the center of a plurality of detectors 21 of x-ray dose sniffer 20 is aimed at the beam center of accelerator 10.
Preferably, for further realizing to the protection of external environment condition and to shielding from the scattering low energy X ray around the sniffer, in the outer setting of x-ray dose sniffer 20 and collimating apparatus 11 shield 12 is arranged.In a kind of embodiment, shield 12 is by the material with radiation proof function, formation such as heavy metal material lead for example, and it further is provided with cavity 13, x-ray dose sniffer 20 is set in the cavity 13 of shield 12.Referring to Fig. 2 B, X ray incides on each detector 21 of x-ray dose sniffer 20 then by the collimation of collimating apparatus 11.With each conversion element 31 of a corresponding detector 21 couplings, for example the silicon photodiode is used for converting X ray to electric signal at the dosage that each detector 21 absorbs.With the amplifier 32 of a corresponding conversion element 31 couplings electric signal is carried out linearity and amplify, the electric signal of the dosage that in each detector 21, absorbs corresponding to X ray with acquisition.
Based on the data of the electric signal of the dosage that above-mentioned each detector 21 is absorbed corresponding to X ray, can obtain the original absorption curve of X ray absorbed dose on described x-ray dose sniffer in each detector 21.The acquisition of above-mentioned original absorption curve obtains by each detector 21 is connected into curve corresponding to X ray data of the electric signal of absorbed dose in each detector 21.Further, in preferably a kind of but not restricted embodiment, also can or cover the calculating of snap gauge plan and carry out complete to original absorption curve by the mathematics interpolation.
Referring to Fig. 1, in a kind of preferred implementation, the individual difference that exists owing to each detector and subsequent amplifier parameter, for the influence to measurement result of the individual difference of eliminating detector 21 and amplifier 32 parameters, need the data that obtain from detector assembly 20 also namely be proofreaied and correct original absorption curve.As shown in Figure 1, the system that is used for the energy of measurement accelerator X ray also comprises means for correcting 50, difference based on the parameter characteristic of each detector and amplifier, the original absorption curve of the dosage that the X ray that obtains is absorbed at described x-ray dose sniffer is proofreaied and correct, to obtain the absorption curve of the dosage that X ray absorbs at described x-ray dose sniffer.But present embodiment does not have limited significance, and the individual difference of each detector can not proofreaied and correct yet, as long as accelerator and standard energy accelerator to be detected exposes to same x-ray dose sniffer 20.
In a kind of preferred implementation, referring to Fig. 1, the system 100 that is used for the energy of measurement accelerator X ray also comprises comparison means 40, and it comprises: computing unit 41, be used for to carry out that described absorption curve and benchmark absorption curve are compared, with the energy of definite described accelerator to be detected.By the absorption curve and the comparison of benchmark absorption curve that will measure, can fast, correctly determine measured accelerator energy and energy spectral property.Preferably, comparison means 40 also comprises storage unit 42, is used for the benchmark absorption curve of storage standards energy accelerator on described x-ray dose sniffer in advance.Specifically, this system disposition series of standards energy accelerator a series of benchmark absorption curve that above-mentioned detector assembly 20 is exposed and obtains.Those of ordinary skill in the art is to be understood that, by improving above-mentioned series standard energy accelerator to the expose precision of a series of benchmark absorption curve that obtains of above-mentioned detector assembly 20, then can improve the precision of the energy of determining detected accelerator.For example, the energy sequence of the series standard energy accelerator of employing is respectively 0.5Mev, 1Mev, and 1.5Mev, 2Mev......, it is differential to be 0.5Mev; If the energy sequence of the series standard energy accelerator that adopts is respectively 0.1Mev, 0.2Mev, 0.3Mev, 0.4Mev, 0.5Mev...... it is differential to be 0.1Mev, then correspondingly, because the precision of the benchmark absorption curve of standard energy accelerator on described x-ray dose sniffer improves 5 times, then the precision of the accelerator energy that compares acquisition by the absorption curve that will measure and benchmark absorption curve accordingly also improves 5 times.
Preferably, can also further intend calculation mode by mathematics interpolation or illiteracy snap gauge, the standard energy accelerator of complete each energy section is about the benchmark absorption curve of above-mentioned detector assembly 20.
In embodiment shown in Figure 1, described storage unit 42 can be nonvolatile memory, ROM, RAM or flash memory, and described computing unit 41 can be microcomputer or microprocessor.
Describe below in conjunction with Fig. 1-3 pair of accelerator X ray energy measurement method according to a kind of embodiment of the present invention.Referring to Fig. 3, the accelerator X ray energy measurement method according to the specific embodiment of the present invention comprises step: x-ray dose sniffer 20 is provided, and it comprises a plurality of detectors 21 (S1) that are parallel to each other and isolate setting; To be directed to from the X ray that accelerator to be detected 10 sends on a plurality of detectors 21 of x-ray dose sniffer 20 (S2); Collect the dosage of the X ray that absorbs in each detector 21, and obtain the absorption curve (S3) of X ray absorbed dose on described x-ray dose sniffer 20; And with described absorption curve and standard energy accelerator the benchmark absorption curve on described x-ray dose sniffer 20 compares, to determine the energy (S5) of described accelerator 10 to be detected.
As previously mentioned, in step S1, detector 21 can comprise one of solid scintillation detector, gas detector, semiconductor detector and thermoluminescence sheet, and each detector 21 is collected the dosage that X ray absorbs independently in each detector.In step S2, come to be directed on a plurality of detectors 21 of x-ray dose sniffer 20 from the X ray that accelerator to be detected 10 sends, the center of a plurality of detectors 21 of x-ray dose sniffer 20 is aimed at the beam center of accelerator 10.In a kind of preferred implementation, the X ray that sends from accelerator to be detected can be collimated, the X ray after will collimating then is directed on a plurality of detectors of x-ray dose sniffer.
In collecting step S3, as previously mentioned, with each conversion element 31 of a corresponding detector 21 couplings, for example the silicon photodiode is used for converting X ray to electric signal at the dosage that each detector 21 absorbs.Preferably, by corresponding amplifier 32 electric signal is carried out linearity and amplify, thereby obtain electric signal amplification, that be convenient to handle.Based on the data of the electric signal of the dosage that above-mentioned each detector 21 is absorbed corresponding to X ray, can obtain the original absorption curve of the dosage that X ray absorbs at described x-ray dose sniffer in each detector 21.
The individual difference that exists owing to each detector and subsequent amplifier parameter, in one embodiment, for the influence to measurement result of the individual difference of eliminating detector 21 and amplifier 32 parameters, need the data that obtain from detector assembly 20 also namely be proofreaied and correct original absorption curve.In step S4, in one embodiment, obtaining X ray in the contact of the original absorption curve of 20 absorbed dose on the described x-ray dose sniffer, difference based on the parameter characteristic of each detector 21, the original absorption curve that obtains X ray absorbed dose on described x-ray dose sniffer is proofreaied and correct, to obtain the absorption curve of X ray absorbed dose on described x-ray dose sniffer.In another embodiment, under the situation that the electric signal that adopts 32 pairs of conversion elements of amplifier 31 to obtain amplifies, difference based on the parameter characteristic of each amplifier 32, proofread and correct at the original absorption curve of the dosage of described x-ray dose sniffer 20 absorptions obtaining X ray, to obtain X ray at the absorption curve of the dosage of described x-ray dose sniffer 20 absorptions.
Need to prove that aligning step mainly is that the data deviation that exists individual difference to cause of each detector and subsequent amplifier parameter is revised, it is not necessary.In addition, though aligning step is carried out by means for correcting 50 in the previous embodiment among the present invention, this can not be interpreted as for example also can carrying out manual synchronizing by the operator to a kind of restriction of the present invention.
In comparison step S5, the benchmark absorption curve on described x-ray dose sniffer 20 compares with described absorption curve and standard energy accelerator, to determine the energy of described accelerator 10 to be detected.In a kind of embodiment, the benchmark absorption curve of standard energy accelerator on described x-ray dose sniffer 20 is provided in advance, and is transported in the computing unit 41; And the X ray that obtains is input in the described computing unit 41 at the absorption curve of the dosage that described x-ray dose sniffer absorbs, to carry out the comparison of described absorption curve and benchmark absorption curve.As previously mentioned, in embodiment, the benchmark absorption curve of standard energy accelerator on described x-ray dose sniffer can be stored in the storage unit 42 in advance, for example can be nonvolatile memory, ROM, RAM or flash memory.Computing unit 41, for example microcomputer or microprocessor be used for to be carried out described absorption curve and benchmark absorption curve are compared, with the energy of definite described accelerator to be detected.By the absorption curve and the comparison of benchmark absorption curve that will measure, can fast, correctly determine measured accelerator energy and energy spectral property.
In addition, though comparison step is carried out by comparison means 40 in the previous embodiment among the present invention, specifically, comparison means 40 comprises: computing unit 41, be used for to carry out that described absorption curve and benchmark absorption curve are compared, with the energy of definite described accelerator to be detected.Preferably, comparison means 40 also comprises storage unit 42, is used for the benchmark absorption curve of storage standards energy accelerator on described x-ray dose sniffer in advance.But this can not be interpreted as a kind of restriction of the present invention, and for example said memory cells 42 also can be replaced by the benchmark absorption curve of physical form, and above-mentioned compare operation also can the operator be finished.
In addition, according to above-mentioned technical scheme, the useful a plurality of detectors of institute are integrated; disposable or multiexposure, multiple exposure is measured accelerator dosage absorption curve; and by with a series of datum curves method relatively, determine the scheme of accelerator energy all to belong to protection scope of the present invention.
In addition, according to above-mentioned technical scheme, form detector set with different detector kinds; obtain accelerator dosage absorption curve by disposable or multiexposure, multiple exposure; and by with a series of datum curves method relatively, determine the scheme of accelerator energy all to belong to protection scope of the present invention.
Though some embodiment of this present general inventive concept are shown and explanation, those skilled in the art will appreciate that, under the situation of the principle that does not deviate from this present general inventive concept and spirit, can make a change these embodiment, scope of the present invention limits with claim and their equivalent.
Claims (6)
1. system of be used for measuring the energy of accelerator X ray comprises:
The x-ray dose sniffer, it comprises a plurality of detectors that are parallel to each other and isolate setting, the X ray that sends from accelerator to be detected is directed on a plurality of detectors perpendicular to the stack direction of a plurality of detectors substantially, X ray pass successively in a plurality of detectors partly or entirely, to survey the dosage of the X ray that absorbs in each detector, wherein carry out signal between the adjacent detector and isolate, to prevent producing signal cross-talk between each detector;
Gathering-device, for the data of the dosage of collecting the X ray that absorbs corresponding to each detector, and the absorption curve of acquisition X ray absorbed dose on described x-ray dose sniffer; And
Comparison means is used for that the benchmark absorption curve on described x-ray dose sniffer compares with described absorption curve and standard energy accelerator, and with the energy of definite described accelerator to be detected, wherein said comparison means comprises:
Storage unit, be used for the benchmark absorption curve of storage standards energy accelerator on described x-ray dose sniffer, wherein by series of standards energy accelerator is exposed to described x-ray dose sniffer, obtain a series of benchmark absorption curves corresponding with the energy rank of series of standards energy accelerator; With
Computing unit be used for to carry out that described absorption curve and described benchmark absorption curve are compared, with the energy of definite described accelerator to be detected;
Wherein carry out electricity between the adjacent detector and isolate, to prevent that producing electric signal between each detector crosstalks.
2. the system for the energy of measuring the accelerator X ray according to claim 1 also comprises:
Collimating apparatus is used for the X ray that sends from accelerator to be detected is collimated; And
Shield is used for shielding from the scattering low energy X ray around the sniffer.
3. the system for the energy of measuring the accelerator X ray according to claim 1 and 2, wherein said gathering-device comprises:
A plurality of conversion elements, each conversion element and corresponding detector coupling are used for converting X ray to electric signal at each detector absorbed dose; And
A plurality of amplifiers, each amplifier and corresponding conversion element coupling are used for electric signal is carried out linearity amplification.
4. the system for the energy of measuring the accelerator X ray according to claim 3, wherein:
Described detector is gas detector.
5. the system for the energy of measuring the accelerator X ray according to claim 4 also comprises:
Means for correcting, difference based on the parameter characteristic of each detector and amplifier, original absorption curve to X ray absorbed dose on described x-ray dose sniffer of obtaining is proofreaied and correct, to obtain the absorption curve of X ray absorbed dose on described x-ray dose sniffer.
6. the system for the energy of measuring the accelerator X ray according to claim 1, wherein:
Described storage unit is nonvolatile memory or RAM;
Described computing unit is microcomputer or microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010233181 CN102033239B (en) | 2009-09-28 | 2010-07-15 | X-ray energy measuring system for accelerator |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910093761 | 2009-09-28 | ||
| CN200910093761.5 | 2009-09-28 | ||
| CN 201010233181 CN102033239B (en) | 2009-09-28 | 2010-07-15 | X-ray energy measuring system for accelerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102033239A CN102033239A (en) | 2011-04-27 |
| CN102033239B true CN102033239B (en) | 2013-07-10 |
Family
ID=43886387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010233181 Active CN102033239B (en) | 2009-09-28 | 2010-07-15 | X-ray energy measuring system for accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102033239B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103330571A (en) * | 2013-04-27 | 2013-10-02 | 中国人民解放军北京军区总医院 | Data acquisition system, data acquisition control method and mobile CT scanner |
| CN104090291A (en) * | 2014-07-24 | 2014-10-08 | 重庆大学 | Collimator array and industrial CT equipment linear detector crosstalk correcting device and method |
| RU2572065C1 (en) * | 2014-10-20 | 2015-12-27 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Device to measure energy of soft x-ray radiation in several spectral ranges |
| CN105068105B (en) * | 2015-08-18 | 2017-09-26 | 浙江建安检测研究院有限公司 | Accelerator head leakage rediation method of testing |
| CN106581873B (en) * | 2016-12-07 | 2019-12-27 | 上海交通大学医学院附属第九人民医院 | Method for detecting radioactive dose |
| EP3660542A1 (en) * | 2018-11-29 | 2020-06-03 | Koninklijke Philips N.V. | Hybrid x-ray and optical detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104468A (en) * | 1986-06-30 | 1988-02-03 | 通用电气公司 | The reflective coating of shaft-like solid scintillater |
| US5434417A (en) * | 1993-11-05 | 1995-07-18 | The Regents Of The University Of California | High resolution energy-sensitive digital X-ray |
| CN1451952A (en) * | 2002-04-19 | 2003-10-29 | 精工电子有限公司 | Ray detector |
| CN101000377A (en) * | 2006-12-29 | 2007-07-18 | 成都川大奇林科技有限责任公司 | Method for measuring energy spectrum of medical electronic accelerator |
| CN101477205A (en) * | 2009-01-22 | 2009-07-08 | 中国科学技术大学 | Radioactive source inversion method based on multi-algorithm |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0453765Y2 (en) * | 1985-09-02 | 1992-12-17 |
-
2010
- 2010-07-15 CN CN 201010233181 patent/CN102033239B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87104468A (en) * | 1986-06-30 | 1988-02-03 | 通用电气公司 | The reflective coating of shaft-like solid scintillater |
| US5434417A (en) * | 1993-11-05 | 1995-07-18 | The Regents Of The University Of California | High resolution energy-sensitive digital X-ray |
| CN1451952A (en) * | 2002-04-19 | 2003-10-29 | 精工电子有限公司 | Ray detector |
| CN101000377A (en) * | 2006-12-29 | 2007-07-18 | 成都川大奇林科技有限责任公司 | Method for measuring energy spectrum of medical electronic accelerator |
| CN101477205A (en) * | 2009-01-22 | 2009-07-08 | 中国科学技术大学 | Radioactive source inversion method based on multi-algorithm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102033239A (en) | 2011-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102033239B (en) | X-ray energy measuring system for accelerator | |
| Bardin et al. | ft Value of O 14 and the Universality of the Fermi Interaction | |
| WO2016080610A1 (en) | Method and apparatus for distinguishing radionuclide by using plastic scintillator | |
| CN103206931A (en) | Method and device for measuring X-ray thickness | |
| Achasov et al. | Search for the process e+ e-→ η | |
| US20120002788A1 (en) | Article inspection device and inspection method | |
| Sutton et al. | Proton-proton scattering at 437 Mev | |
| Miyake et al. | π−+ p→ π 0+ n Charge Exchange Cross Sections at 20.7 and 31.0 Mev | |
| Fields et al. | Reaction p+ p→ π++ d in the 425-Mev Energy Region | |
| US10175382B2 (en) | Identification of materials | |
| Verbinski et al. | Threshold-foil measurements of reactor neutron spectra for radiation damage applications | |
| Berndt et al. | 235U enrichment determination on UF6 cylinders with CZT detectors | |
| Safford et al. | Determination of the Absolute Neutron Fission Cross Section of U 235 | |
| Knyazev et al. | Tl concentration and its variation in a CsI (Tl) crystal for the CALIFA detector | |
| KR102096289B1 (en) | Apparatus for scintillator based real-time partial defect detection in spent nuclear fuel | |
| Brody et al. | Study of the reaction p+ d→ He 3+ x 0 | |
| Marshall et al. | Small-Angle Proton-Proton Polarization and Cross Section at 213 MeV | |
| Radu et al. | Transfer of detector efficiency calibration from a point source to other geometries using ETNA software | |
| Osipenko et al. | An intrinsically safe facility for forefront research and training on nuclear technologies—Neutron yield from Be | |
| Calame | Measuring the leading-order hadronic contribution to the muon g-2 in the space-like region | |
| Shirakawa et al. | Remote sensing of nuclear accidents using a direction finding detector | |
| Friedman | Studies of Neutron Thermalization in H2O by the Pulsed Source and “Non 1/ν” Absorbers Method | |
| Wang et al. | Performance Simulation of Muon Detectors Based on Structural Design and Array Layout of Plastic Scintillators | |
| Möller et al. | The calibration of the flight radiation environment detector (FRED) | |
| Temples | Improving low-mass reach of xenon TPC dark matter searches by doping with light noble elements |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |