CN105319575A - Neutron performance testing device of neutron collimator - Google Patents
Neutron performance testing device of neutron collimator Download PDFInfo
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- CN105319575A CN105319575A CN201510885609.6A CN201510885609A CN105319575A CN 105319575 A CN105319575 A CN 105319575A CN 201510885609 A CN201510885609 A CN 201510885609A CN 105319575 A CN105319575 A CN 105319575A
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Abstract
The invention relates to an instrument performance testing device. Aiming at solving the problems of a neutron performance testing manner of an existing neutron collimator that the precision is low, the economical efficiency is poor, the testing operation is inconvenient and the like, the invention provides a neutron performance testing device of the neutron collimator. The device comprises a two-dimensional adjustable slit, a testing platform, a neutron detection system, a control system and a data acquisition system, wherein the testing platform comprises a base and two sets of neutron collimator position adjusting devices; each neutron collimator position adjusting device comprises a rotary platform, a height adjusting device, a transverse slide rail, a longitudinal slide rail and a neutron collimator fixed seat; and the rotary platforms, the transverse slide rails and the longitudinal slide rails are controlled by a servo motor. The testing device provided by the invention can be used for accurately and rapidly measuring a neutron divergence angle and neutron transmissivity of the neutron collimator and has relatively good economical efficiency; the testing operation is relatively convenient to carry out, and preparation and installation work before testing is obviously simplified; and meanwhile, the testing device has extremely good movability.
Description
Technical field
The present invention relates to a kind of instrument performance proving installation, be specifically related to a kind of neutron collimator Neutron properties proving installation.
Background technology
Neutron scattering spectrometer is that the neutron of a large amount of different-energies utilizing reactor, spallation source etc. to produce is as neutron source, the neutron therefrom selecting certain energy incides on studied sample, by parameters such as detection outgoing neutron energy, momentum, to realize the instrument of the research of the aspect such as stress, texture, micromechanism, magnetic dependence performance to sample.The neutron produced due to reactor or spallation source is to 4 π direction scatterings, cause from the neutron streaming angle of divergence of duct extraction very large, and the direction that the measurement of momentum change needs incident neutron to have to be determined, thus neutron scattering spectrometer generally needs to use neutron collimator, to limit the direction of incident neutron, thus reach its resolution of raising, promote the object of signal to noise ratio (S/N ratio).
In recent years, the neutron scattering investigative technique of China is still in development process, and the technical merit of relevant devices constantly promotes, and therefore it is also proposed requirements at the higher level to the performance of neutron collimator.For guaranteeing that neutron collimator in use can give full play to its performance and have high reliability, neutron collimator must carry out Neutron properties test before formally installing and using.The Neutron properties of neutron collimator mainly comprises two aspects, i.e. the neutron angle of divergence and neutron transmission rate, and the groundwork of therefore Neutron properties test is measured these two parameters exactly.
At present, the Neutron properties test of neutron collimator is all carried out on specific neutron scattering spectrometer, but due to the preciousness of neutron scattering spectrometer resource, therefore above-mentioned test mode can cause the waste of resource, and bring following problem: 1. the preliminary work before test is very loaded down with trivial details, 2. test process is complicated, and 3. measuring accuracy is low, and 4. the test duration is long.As can be seen here, the Neutron properties test mode precision of existing neutron collimator is low, less economical, test operation is very inconvenient.
Summary of the invention
For problems such as the Neutron properties test mode precision solving existing neutron collimator are low, less economical, test operation is inconvenient, the invention provides a kind of neutron collimator Neutron properties proving installation.
This device comprises two-dimentional adjustable slit, test board, neutron detection system, control system and data acquisition system (DAS); Described test board comprises base and two groups of neutron collimator apparatus for adjusting position, and described two groups of neutron collimator apparatus for adjusting position structures are identical; Described neutron collimator apparatus for adjusting position comprises universal stage, arrangement for adjusting height, horizontal slide rail, longitudinal slide rail and neutron collimator holder, described arrangement for adjusting height is fixed on described universal stage, described arrangement for adjusting height is fixed with horizontal slide rail, described horizontal slide rail be provided with can transversely slide rail slide longitudinal slide rail, described longitudinal slide rail is provided with neutron collimator holder, and described universal stage, horizontal slide rail and longitudinal slide rail are by Serve Motor Control.
Described neutron detection system can adopt H3 single tube detector, two-dimension position-sensitive detector or neutron camera.
Described neutron collimator Neutron properties proving installation can also comprise neutron shield room.
Neutron collimator Neutron properties proving installation of the present invention have employed two neutron collimator apparatus for adjusting position, and the two all can realize the traversing and vertical shift of the rotation of neutron collimator, lifting and horizontal direction, is convenient to installation and the aligning of neutron collimator.
In practical application, neutron collimator Neutron properties proving installation of the present invention can using traditional reactor or spallation neutron target as test neutron source; When other neutron scattering spectrometer also can be utilized to work, unnecessary no transmission neutron Shu Zuowei tests neutron source, reduces neutron streaming cost greatly; Small-sized weak neutron source can also be set in described neutron shield room as test neutron source, improve application flexibility.
Neutron collimator Neutron properties proving installation of the present invention is a kind of special measurement device, can the neutron angle of divergence of measurement neutron collimator accurately and fast and neutron transmission rate, owing to having departed from the dependence to neutron scattering spectrometer, therefore there is good economy, test operation more for convenience, preparation before test and installment work are able to obvious simplification, also have fabulous mobility simultaneously.
Accompanying drawing explanation
Fig. 1 neutron collimator Neutron properties of the present invention proving installation vertical view.
Fig. 2 neutron collimator Neutron properties of the present invention proving installation test board schematic diagram.
Fig. 3 neutron collimator Neutron properties of the present invention proving installation test board vertical view.
Fig. 4 neutron collimator Neutron properties of the present invention proving installation test board side view.
Reference numeral: 1. two-dimentional adjustable slit, 2. test board, 3. neutron detection system, 4. control system, 5. data acquisition system (DAS), 6. base, 7. neutron collimator apparatus for adjusting position, 8. universal stage, 9. arrangement for adjusting height, 10. horizontal slide rail, 11. longitudinal slide rails, 12. neutron collimator holders, 13. universal stage servomotors, 14. horizontal slide rail servomotors, 15. longitudinal slide rail servomotors, 16. neutron shield rooms.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention are described further.
Embodiment 1
Adopt neutron collimator Neutron properties proving installation of the present invention to test the neutron angle of divergence of a certain batch of (totally 9) metal neutron collimator and neutron transmission rate, its key step is as follows:
(1) neutron collimator Neutron properties proving installation is placed near certain neutron scattering spectrometer worked, and tests neutron source with its unnecessary no transmission neutron Shu Zuowei;
(2) regulate according to the limit bundle size of size to two-dimentional adjustable slit of metal neutron collimator to be tested;
(3) neutron collimator of the known neutron angle of divergence is placed in one on a neutron collimator holder, regulate universal stage, arrangement for adjusting height, horizontal slide rail and longitudinal slide rail by control system, this neutron collimator is aimed at two-dimentional adjustable slit;
(4) metal neutron collimator to be tested is placed on another neutron collimator holder, regulate universal stage, arrangement for adjusting height, horizontal slide rail and longitudinal slide rail by control system, metal neutron collimator to be tested is aimed at the neutron collimator of the aforementioned known neutron angle of divergence, two-dimentional adjustable slit;
(5) it is 0 ° with above-mentioned position of adjusting, universal stage is regulated to make metal neutron collimator to be tested turn to 2 ° by-2 ° by control system, often turn over 0.02 ° and suspend rotation, a neutron counting is obtained by neutron detection system, obtain the rocking curve of metal neutron collimator to be tested, calculate the neutron angle of divergence of metal neutron collimator to be tested according to this rocking curve;
(6) metal neutron collimator to be tested is taken off by neutron collimator holder, obtain neutron counting now by neutron detection system; Calculate the neutron transmission rate of metal neutron collimator to be tested according to the maximum neutron counting obtained in this neutron counting and step (five), complete its neutron performance test;
(7) complete the Neutron properties test of all the other metal neutron collimators to be tested with reference to said process, test result is in table 1, and wherein the Neutron properties test result of No. 7 and No. 9 metal neutron collimators is defective.
Table 1:
Embodiment 2
Adopt neutron collimator Neutron properties proving installation of the present invention to test the neutron angle of divergence of a certain batch of (totally 9) Mylar film neutron collimator and neutron transmission rate, its key step is as follows:
(1) adopt neutron shield room, small-sized weak neutron source is set in neutron shield room as test neutron source;
(2) regulate according to the limit bundle size of size to two-dimentional adjustable slit of Mylar film neutron collimator to be tested;
(3) neutron collimator of the known neutron angle of divergence is placed in one on a neutron collimator holder, regulate universal stage, arrangement for adjusting height, horizontal slide rail and longitudinal slide rail by control system, this neutron collimator is aimed at two-dimentional adjustable slit;
(4) Mylar film neutron collimator to be tested is placed on another neutron collimator holder, regulate universal stage, arrangement for adjusting height, horizontal slide rail and longitudinal slide rail by control system, Mylar film neutron collimator to be tested is aimed at the neutron collimator of the aforementioned known neutron angle of divergence, two-dimentional adjustable slit;
(5) it is 0 ° with above-mentioned position of adjusting, universal stage is regulated to make Mylar film neutron collimator to be tested turn to 2 ° by-2 ° by control system, often turn over 0.02 ° and suspend rotation, a neutron counting is obtained by neutron detection system, obtain the rocking curve of Mylar film neutron collimator to be tested, calculate the neutron angle of divergence of Mylar film neutron collimator to be tested according to this rocking curve;
(6) Mylar film neutron collimator to be tested is taken off by neutron collimator holder, obtain neutron counting now by neutron detection system; Calculate the neutron transmission rate of Mylar film neutron collimator to be tested according to the maximum neutron counting obtained in this neutron counting and step (five), complete its neutron performance test;
(7) complete the Neutron properties test of all the other Mylar film neutron collimators to be tested with reference to said process, test result is in table 2, and wherein the Neutron properties test result of No. 8 Mylar film neutron collimators is defective.
Table 2:
Claims (3)
1. a neutron collimator Neutron properties proving installation, is characterized in that: this device comprises two-dimentional adjustable slit, test board, neutron detection system, control system and data acquisition system (DAS); Described test board comprises base and two groups of neutron collimator apparatus for adjusting position, and described two groups of neutron collimator apparatus for adjusting position structures are identical; Described neutron collimator apparatus for adjusting position comprises universal stage, arrangement for adjusting height, horizontal slide rail, longitudinal slide rail and neutron collimator holder, described arrangement for adjusting height is fixed on described universal stage, described arrangement for adjusting height is fixed with horizontal slide rail, described horizontal slide rail be provided with can transversely slide rail slide longitudinal slide rail, described longitudinal slide rail is provided with neutron collimator holder, and described universal stage, horizontal slide rail and longitudinal slide rail are by Serve Motor Control.
2. neutron collimator Neutron properties proving installation as claimed in claim 1, is characterized in that: described neutron detection system adopts H3 single tube detector, two-dimension position-sensitive detector or neutron camera.
3. neutron collimator Neutron properties proving installation as claimed in claim 1, is characterized in that: described neutron collimator Neutron properties proving installation also comprises neutron shield room.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106950236A (en) * | 2017-05-17 | 2017-07-14 | 中国工程物理研究院核物理与化学研究所 | A kind of device for the quick localizing sample position of neutron small angle scattering spectrometer |
| CN107358988A (en) * | 2017-07-14 | 2017-11-17 | 东莞中子科学中心 | A kind of neutron insert system and its alignment method |
| CN108535769A (en) * | 2017-03-03 | 2018-09-14 | 中国辐射防护研究院 | A kind of probe and its test calibration method tested for optical fiber neutron detection system with calibration |
| CN109212585A (en) * | 2018-07-26 | 2019-01-15 | 东莞材料基因高等理工研究院 | It is a kind of for detect neutron monochromator mosaic angle distribution test method and device |
| CN109659061A (en) * | 2018-12-27 | 2019-04-19 | 中国原子能科学研究院 | The continuously adjustable neutron howitzer structure of the angle of divergence and its scaling method |
| CN109671513A (en) * | 2018-12-27 | 2019-04-23 | 中国原子能科学研究院 | The continuously adjustable neutron howitzer structure of the angle of divergence and its scaling method |
| CN112093520A (en) * | 2020-09-24 | 2020-12-18 | 中国工程物理研究院核物理与化学研究所 | Neutron spin turning device based on soft magnetic film and application thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108535769A (en) * | 2017-03-03 | 2018-09-14 | 中国辐射防护研究院 | A kind of probe and its test calibration method tested for optical fiber neutron detection system with calibration |
| CN108535769B (en) * | 2017-03-03 | 2022-06-07 | 中国辐射防护研究院 | Probe for testing and calibrating optical fiber neutron detection system and testing and calibrating method thereof |
| CN106950236A (en) * | 2017-05-17 | 2017-07-14 | 中国工程物理研究院核物理与化学研究所 | A kind of device for the quick localizing sample position of neutron small angle scattering spectrometer |
| CN106950236B (en) * | 2017-05-17 | 2023-06-13 | 中国工程物理研究院核物理与化学研究所 | Device for rapidly positioning sample position by neutron small-angle scattering spectrometer |
| CN107358988B (en) * | 2017-07-14 | 2019-06-07 | 东莞中子科学中心 | A kind of neutron insertion piece system and its alignment method |
| CN107358988A (en) * | 2017-07-14 | 2017-11-17 | 东莞中子科学中心 | A kind of neutron insert system and its alignment method |
| CN109212585A (en) * | 2018-07-26 | 2019-01-15 | 东莞材料基因高等理工研究院 | It is a kind of for detect neutron monochromator mosaic angle distribution test method and device |
| CN109212585B (en) * | 2018-07-26 | 2023-09-01 | 东莞材料基因高等理工研究院 | Testing method and device for detecting embedded angle distribution of neutron monochromator |
| CN109659061B (en) * | 2018-12-27 | 2020-06-23 | 中国原子能科学研究院 | Neutron collimator structure with continuously adjustable divergence angle and calibration method thereof |
| CN109671513B (en) * | 2018-12-27 | 2020-06-23 | 中国原子能科学研究院 | Neutron collimator structure with continuously adjustable divergence angle and calibration method thereof |
| CN109671513A (en) * | 2018-12-27 | 2019-04-23 | 中国原子能科学研究院 | The continuously adjustable neutron howitzer structure of the angle of divergence and its scaling method |
| CN109659061A (en) * | 2018-12-27 | 2019-04-19 | 中国原子能科学研究院 | The continuously adjustable neutron howitzer structure of the angle of divergence and its scaling method |
| CN112093520A (en) * | 2020-09-24 | 2020-12-18 | 中国工程物理研究院核物理与化学研究所 | Neutron spin turning device based on soft magnetic film and application thereof |
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