CN106371133B - A kind of implementation method of Larger Dynamic fast neutron yield measuring system - Google Patents
A kind of implementation method of Larger Dynamic fast neutron yield measuring system Download PDFInfo
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- CN106371133B CN106371133B CN201610976579.4A CN201610976579A CN106371133B CN 106371133 B CN106371133 B CN 106371133B CN 201610976579 A CN201610976579 A CN 201610976579A CN 106371133 B CN106371133 B CN 106371133B
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- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
- G01T3/06—Measuring neutron radiation with scintillation detectors
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Abstract
The invention discloses a kind of Larger Dynamic fast neutron yield measuring systems, including micron order capillary scintillator arrays, optical fiber cone, ICCD and image collection processing system；It is filled with liquid scintillator in capillary in micron order capillary scintillator arrays, for realizing neutron signal-proton signal-visible light signal sequence conversion, and will be seen that optical signal transmission to optical fiber cone；Optical fiber cone is for it will be seen that optical signal transmission realizes the pixel matching of micron order capillary scintillator arrays and ICCD to ICCD；ICCD is for recording visible light signal；Image collection processing system is used to acquire the visible light signal on ICCD, and realizes the extraction of proton track.The present invention has well solved the prior art and has been difficult to obtain the Larger Dynamic diagnosis in same orientation and the problem that anti-gamma radiation noise immune is weaker, has and is higher than 104Range ability, be at least higher by 2 magnitudes than general neutron yield detector at present.
Description
Technical field
The present invention relates to fast-neutron detection fields in nuclear energy science and technology, and in particular to be a kind of Larger Dynamic fast neutron
The implementation method of yield measuring system.
Background technique
In inertial confinement fusion research, fast neutron yield is wherein the most key one of parameter.Laser neutron source is ground
In studying carefully, it is also desirable to neutron yield is accurately measured, to explore the method for improving neutron yield.Currently used measurement fast neutron produces
The detector of volume includes BF3Detector and scintillator detector.BF3Detector principle is neutron and time that boron interaction generates
Grade ion α, then amplify output electric signal through gas.The detection principle of scintillator detector is then that neutron and scintillator collision generate
Recoil proton, recoil proton generate visible light with the luminescent material effect in scintillator again, and then visible light signal passes through picture again
Booster multiplication, is finally converted into electric impulse signal.Electric signal and collection number of particles are usually deposited there are certain proportionate relationship
On a response level ground, number of particles is higher than this response level ground, and signal will be saturated.Therefore, the neutron yield that is used for general at present is surveyed
The neutron detector dynamic range of amount is all smaller, and generally 102Range ability.
In an experiment, we usually select the neutron detector of corresponding measurement range by estimating neutron yield.Due to
It is larger to test uncertain factor, if estimating and being not allowed, so that neutron yield exceeds the measurement range of our detectors, it will
It will lead to the failure of an experiment, and in order to reduce such risk, it just may require that the neutron yield measurement of more Larger Dynamic range.However,
Since currently used neutron detector yield dynamic range is all smaller, thus in experiment, we usually need to pass through combination
More different types of neutron detectors improve dynamic range, but such diagnostic design can have one obviously
It is insufficient, it may be assumed that be difficult to obtain the Larger Dynamic diagnosis in same orientation, and the anti-gamma radiation noise immune of detector is weaker.
Therefore, the measurement method for how improving neutron yield becomes mainly asking for those skilled in the art's urgent need to resolve
Topic.
Summary of the invention
In view of the above shortcomings of the prior art, the present invention provides a kind of realizations of Larger Dynamic fast neutron yield measuring system
Method can overcome the shortcomings of that conventional neutron detector response dynamics range is small well, and reduce the influence of gamma radiation.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of Larger Dynamic fast neutron yield measuring system, including micron order capillary scintillator arrays, optical fiber cone, ICCD
And image collection processing system, in which:
Micron order capillary scintillator arrays are filled with liquid scintillator in capillary therein, for realizing neutron letter
Number-conversion of proton signal-visible light signal sequence, and will be seen that optical signal transmission to optical fiber cone；
Optical fiber cone, for it will be seen that optical signal transmission to ICCD, realize micron order capillary scintillator arrays with
The pixel matching of ICCD；
ICCD, for recording visible light signal；
Image collection processing system for acquiring the visible light signal on ICCD, and realizes the extraction of proton track.
Preferably, the unit size of the micron order capillary scintillator arrays is 5 μm~10 μm.
Preferably, the micron order capillary scintillator arrays with a thickness of 1cm~10cm.
Further, the unit size one of described optical fiber cone one end unit size and micron order capillary scintillator arrays
It causes, other end unit size is consistent with the microchannel plate unit size of image intensifier in ICCD.
Still further, the array of the ICCD is 2048 × 2048.
Based on above system structure, the present invention also provides the implementation methods of the measuring system, comprising the following steps:
(1) fast neutron that experiment generates is transferred in micron order capillary scintillator arrays, in neutron and capillary
Liquid scintillator effect, generates recoil proton；
(2) luminescent material in recoil proton and scintillator interacts, and generates visible light signal, and by micron order capillary
Pipe scintillator arrays are exported to optical fiber cone；
(3) received visible light signal is transferred on ICCD by optical fiber cone by light wave matching of waveguide, realizes visible light
The record of signal；
(4) visible light signal on image collection processing system acquisition ICCD, then converts algorithm according to hough and realizes matter
The measurement of neutron yield is completed in the extraction of sub- track.
Further, before the step (3), first from experiment trigger signal in separate all the way signal to ICCD shutter into
Row control excludes the influence that the gamma radiation noise of ICCD is reached prior to neutron signal.
Compared with prior art, the invention has the following advantages:
(1) present invention passes through design micron order capillary scintillator arrays, optical fiber cone, ICCD and image acquisition and processing system
System, each proton track is obtained using the scintillator detector of micron order spatial discrimination, then by directly counting micron
The proton track of grade, and in view of the transfer efficiency of neutron to proton, to realize the measurement of neutron yield.Experiment shows this
Invention, which has, is higher than 104Range ability, thus relative to traditional BF3For detector and scintillator detector, the present invention is extremely
It has been higher by the dynamic range of two magnitudes less.
(2) present invention passes through the extraction of proton track, and cooperates the shutter control and Image Acquisition of ICCD, not only may not be used
Increase image intensifier with additional, and can effectively separate the gamma radiation noise for reaching detector prior to neutron signal, thus
Obtain more accurate neutron signal.
(3) the micron order capillary scintillator arrays unit size in the present invention is between 5 μm~10 μm, it can be achieved that being lower than
10 μm of spatial discrimination, thus combine 1cm~10cm thickness after, it can be achieved that detection efficient control 2.1%~21% it
Between.
(4) the present invention has rational design, easy to use, practical, and it is extensive to be highly suitable for neutron yield measurement aspect
It promotes and applies.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Wherein, the corresponding title of appended drawing reference are as follows:
1- micron order capillary scintillator arrays, 2- optical fiber cone, 3-ICCD, 4- image collection processing system.
Specific embodiment
The invention will be further described with embodiment for explanation with reference to the accompanying drawing, and mode of the invention includes but not only limits
In following embodiment.
Embodiment
As shown in Figure 1, the present invention provides a kind of novel Larger Dynamic fast neutron yield surveys based on the identification of proton track
Amount system, the measurement for the short pulse fast neutron yield that can be used in the research such as inertial confinement fusion and laser neutron source.The present invention
Including sequentially connected micron order capillary scintillator arrays 1, optical fiber cone 2, ICCD (enhancing charge-coupled device) 3 and image
Acquisition processing system 4.
In the micron order capillary scintillator arrays 1, it is filled with liquid scintillator in capillary therein, in realization
Subsignal-proton signal-visible light signal sequence conversion, and capillary is then used as probe unit, is used for transmission individual unit
Visible light signal.The optical fiber cone 2 is for it will be seen that optical signal transmission realizes that micron order capillary dodges to ICCD3
The pixel matching of bright volume array 1 and ICCD3, and by the record of ICCD3 completion visible light signal.The image acquisition and processing system
System 4 realizes the extraction of proton track for acquiring the visible light signal on ICCD3, the image acquisition and processing in the present embodiment
The prior art, such as the built-in image collection processing system based on ARM or FPGA can be used in system, passes through what is embedded
Hough converts algorithm to realize the extraction of proton track.
The present invention measures neutron yield, and detailed process is as follows:
Firstly, the fast neutron that experiment generates is reached in micron order capillary scintillator arrays 1 by transmission certain distance, this
When, neutron is acted on the liquid scintillator in capillary, generates recoil proton.Then, recoil proton again with the hair in scintillator
Luminescent material interaction, to generate visible light signal, and is exported by micron order capillary scintillator arrays 1 to optical fiber cone 2.
According to the difference of the refractive index of scintillator and capillary refractive index, the total reflection of visible light signal may be implemented, so that after
The continuous visible light signal measured can directly reflect the track of proton.
Then, received visible light signal is transferred on ICCD3 by optical fiber cone 2 by light wave matching of waveguide, and realization can
The record of light-exposed signal finally acquires the visible light signal on ICCD3 by image collection processing system 4 again, then realizes proton
The measurement of neutron yield is completed in the extraction of track.In the present embodiment, the unit ruler of the micron order capillary scintillator arrays 1
Very little is 5 μm~10 μm, with a thickness of 1cm~10cm；2 one end unit size of optical fiber cone and micron order capillary scintillator
The unit size of array 1 is consistent, and other end unit size is consistent with the microchannel plate unit size of image intensifier in ICCD3；And
The array of the ICCD3 is 2048 × 2048, the spatial discrimination lower than 10 μm so not only may be implemented, but also can extract
It is greater than 4.19 × 10 out4Proton track, thus facilitate realization be greater than 104Range ability.
In addition, realizing ns grades of neutron yields to exclude to reach the influence of the gamma radiation noise of ICCD prior to neutron signal
Measurement, during above-mentioned measurement neutron yield, can from experiment trigger signal in separate all the way signal to ICCD3 shutter
It is controlled.
The present invention is designed by reasonable system, and the method for combining measurement, completes the big dynamic of neutron yield well
State and high-acruracy survey, solve the prior art be difficult to obtain same orientation Larger Dynamic diagnosis and anti-gamma radiation noise immune compared with
Weak problem.Therefore, for compared with prior art, progress of the present invention is fairly obvious, with substantive distinguishing features outstanding and shows
The progress of work.
Above-described embodiment is only one of the preferred embodiment of the present invention, should not be taken to limit protection model of the invention
Enclose, it is all in body design thought of the invention and mentally make have no the change of essential meaning or polishing, solved
Technical problem is still consistent with the present invention, should all be included within protection scope of the present invention.
Claims (6)
1. a kind of implementation method of Larger Dynamic fast neutron yield measuring system, which is characterized in that flashed including micron order capillary
Volume array (1), optical fiber cone (2), ICCD (3) and image collection processing system (4), in which:
Micron order capillary scintillator arrays are filled with liquid scintillator in capillary therein, for realizing neutron signal-matter
The conversion of subsignal-visible light signal sequence, and will be seen that optical signal transmission to optical fiber cone；
Optical fiber cone, for it will be seen that optical signal transmission to ICCD, realizes micron order capillary scintillator arrays and ICCD's
Pixel matching；
ICCD, for recording visible light signal；
Image collection processing system for acquiring the visible light signal on ICCD, and realizes the extraction of proton track；
The implementation method then the following steps are included:
(1) fast neutron that experiment generates is transferred in micron order capillary scintillator arrays, the liquid in neutron and capillary
Scintillator effect, generates recoil proton；
(2) luminescent material in recoil proton and scintillator interacts, and generates visible light signal, and dodged by micron order capillary
Bright volume array is exported to optical fiber cone；
(3) received visible light signal is transferred on ICCD by optical fiber cone by light wave matching of waveguide, realizes visible light signal
Record；
(4) visible light signal on image collection processing system acquisition ICCD, then converts algorithm according to hough and realizes proton diameter
The measurement of neutron yield is completed in the extraction of mark.
2. a kind of implementation method of Larger Dynamic fast neutron yield measuring system according to claim 1, which is characterized in that institute
The unit size for stating micron order capillary scintillator arrays (1) is 5 μm~10 μm.
3. a kind of implementation method of Larger Dynamic fast neutron yield measuring system according to claim 2, which is characterized in that institute
State micron order capillary scintillator arrays (1) with a thickness of 1cm~10cm.
4. a kind of implementation method of Larger Dynamic fast neutron yield measuring system according to claim 2 or 3, feature exist
In optical fiber cone (2) one end unit size is consistent with the unit size of micron order capillary scintillator arrays (1), another
End unit size is consistent with the microchannel plate unit size of image intensifier in ICCD (3).
5. a kind of implementation method of Larger Dynamic fast neutron yield measuring system according to claim 4, which is characterized in that institute
The array for stating ICCD (3) is 2048 × 2048.
6. a kind of implementation method of Larger Dynamic fast neutron yield measuring system according to claim 5, which is characterized in that institute
Before stating step (3), signal all the way first is separated from experiment trigger signal, ICCD shutter is controlled, exclude to believe prior to neutron
Number reach ICCD gamma radiation noise influence.
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| CN108152851B (en) * | 2017-11-27 | 2020-11-20 | 中核控制系统工程有限公司 | Fast and slow neutron composite detector |
| CN108888230A (en) * | 2018-05-21 | 2018-11-27 | 西安电子科技大学 | Cerenkov endoscopic system, medical image system based on conical fiber connection |
| CN111060955A (en) * | 2019-12-10 | 2020-04-24 | 中国人民解放军96901部队23分队 | Neutron energy spectrum measuring device based on multilayer neutron moderated fluorescence and optical fiber conduction |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005077377A (en) * | 2003-09-03 | 2005-03-24 | Yamagata Univ | Neutron detector and neutron detection method |
| CN1643400A (en) * | 2002-03-26 | 2005-07-20 | 法国原子能委员会 | Two-dimensional ionising particle detector |
| CN101669040A (en) * | 2007-04-25 | 2010-03-10 | 皇家飞利浦电子股份有限公司 | Radiation detector having a split laminate optical coupling |
| CN206133023U (en) * | 2016-11-08 | 2017-04-26 | 中国工程物理研究院激光聚变研究中心 | Big dynamic fast neutron yield measurement system |
-
2016
- 2016-11-08 CN CN201610976579.4A patent/CN106371133B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1643400A (en) * | 2002-03-26 | 2005-07-20 | 法国原子能委员会 | Two-dimensional ionising particle detector |
| JP2005077377A (en) * | 2003-09-03 | 2005-03-24 | Yamagata Univ | Neutron detector and neutron detection method |
| CN101669040A (en) * | 2007-04-25 | 2010-03-10 | 皇家飞利浦电子股份有限公司 | Radiation detector having a split laminate optical coupling |
| CN206133023U (en) * | 2016-11-08 | 2017-04-26 | 中国工程物理研究院激光聚变研究中心 | Big dynamic fast neutron yield measurement system |
Non-Patent Citations (4)
| Title |
|---|
| CCD图像传感器的市场与发展;程开福;《国外电子元器件》;20000731;全文 |
| Geant4在惯性约束聚变内爆物理中的应用;苏明等;《强激光与粒子束》;20130831;2130-2135页 |
| 新型图像传感器ICCD的原理及应用;宋述燕等;《科技信息》;20071231;全文 |
| 轮廓小波联合RL对中子数字图像的复原研究;谭冰巍;《中国优秀硕士学位论文全文数据库信息科技辑》;20140228;8-9页 |
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