CN102332318B - First collimator adjusting device of neutron texture diffractometer - Google Patents
First collimator adjusting device of neutron texture diffractometer Download PDFInfo
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- CN102332318B CN102332318B CN201110200106.2A CN201110200106A CN102332318B CN 102332318 B CN102332318 B CN 102332318B CN 201110200106 A CN201110200106 A CN 201110200106A CN 102332318 B CN102332318 B CN 102332318B
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Abstract
The invention discloses a first collimator adjusting device of a neutron texture diffractometer, relates to the technical field of neutron scattering, and solves the problems that when a plurality of first collimators are adjusted in position in the prior art, the plurality of first collimators are moved integrally, the occupied space is too large, and the cost of an external shielding body is increased greatly. The scheme provided by the embodiment of the invention is as follows: the utility model provides a first collimator adjusting device of neutron texture diffractometer, neutron texture diffractometer includes a plurality of first collimators, including the translation guide rail, be equipped with on the translation guide rail and be used for installing a plurality of first collimators and make the equal independent translational motion's of every first collimator translation unit. The embodiment of the invention is suitable for neutron texture diffractometers and the like.
Description
Technical field
The present invention relates to neutron scattering technical field, relate in particular to a kind of adjusting device for first collimator of neutron texture diffraction instrument.
Background technology
The first collimator of neutron texture diffraction instrument, for accurately limiting the angular divergence of incident neutron line, makes spectrometer meet the requirements of resolution, and reduces sample-out count.First collimator is the very important parts of neutron texture diffraction instrument.Neutron texture diffraction instrument is mostly furnished with the first collimator of a plurality of different divergence, and a plurality of first collimators are placed on collimator adjustment device.
At present, the adjusting device for first collimator of neutron texture diffraction instrument mainly contains two kinds: the first, as shown in Figure 1, by vertical device for moving and adjusting, select to have a plurality of first collimators of different divergence, a plurality of first collimator integrated movings while selecting different collimating apparatuss, in Fig. 1,1 is neutron beam, 2 is a plurality of first collimators, the moving direction that the direction of diagram arrow is collimating apparatus, the direction that the direction on diagram triangle dotted line is neutron beam.If have 3 or above first collimator, whole adjusting gear is very high.Because first collimator and adjusting gear and monochromator are together placed in monochromator shield, if outside monochromator shield adopts this adjusting gear, need to increase the height of monochromator shield accordingly, can there are certain requirements the crane height of reactor hall on the one hand, on the other hand, can significantly increase shielding cost; The second, as shown in Figure 2, by moving horizontally, select the different first collimator of a plurality of divergence, similar with Fig. 1, while selecting different collimating apparatus, a plurality of first collimators are also while integrated movings, make the width of collimator adjustment device very large, so not only require collimating apparatus to have sufficient space around, and increased the cost of monochromator shield.
State in realization in the process of adjusting a plurality of first collimators position, inventor finds that in prior art, at least there are the following problems:
When a plurality of first collimators carry out position adjustment, a plurality of first collimator integrated movings, the volume that takes up room is excessive, can significantly increase the cost of exterior shield body.
Summary of the invention
For existing deficiency in prior art, the object of the present invention is to provide a kind of adjusting device for first collimator of neutron texture diffraction instrument, can reduce to take up room, reduce the cost of exterior shield body.
The present invention solves the problems of the technologies described above adopted technical scheme as described below:
A kind of adjusting device for first collimator of neutron texture diffraction instrument, described neutron texture diffraction instrument comprises a plurality of first collimators, comprise translation guide rail, described translation guide rail be provided with for first collimator is installed and make each first collimator all can independent translation the translation unit of motion.
Further, described translation unit comprises back up pad, described back up pad is provided with shift plate, in described shift plate, first collimator is installed, described shift plate is connected with described back up pad by fixed block towards one end of neutron beam direction, the described shift plate dorsad other end of neutron beam direction is connected with described back up pad by eccentric wheel, and described eccentric wheel is used for making described shift plate to swing along described fixed block.
Further, the hunting range of described shift plate be ± 30 '.
Further, also comprise gear, described gear and gear track mesh and by direct motor drive, described gear is connected with described translation unit and drives described translation unit to do translation motion.
Further, the divergence of described a plurality of first collimators be respectively 10 ', 30 ' and Open.
Effect of the present invention is: the present invention is after having taked technique scheme, and each first collimator all can just can reduce to take up room along the independently translation motion of translation guide rail, reduces the cost of exterior shield body.In addition, collimating apparatus pivot angle central composite design is in collimating apparatus porch, improved in design in the past pivot angle center in the way at collimating apparatus center, overcome after adjusting pivot angle and also will constantly adjust the way that horizontal level aligns neutron beam.
Accompanying drawing explanation
Fig. 1 is the structural representation of the vertical device for moving and adjusting of first collimator in prior art;
Fig. 2 is the structural representation that in prior art, first collimator moves horizontally adjusting gear;
Fig. 3 is the structural representation of first collimator;
Fig. 4 is the structural representation of the adjusting device for first collimator of embodiment of the present invention neutron texture diffraction instrument;
Fig. 5 is the translation schematic diagram of the adjusting device for first collimator of embodiment of the present invention neutron texture diffraction instrument;
Fig. 6 is that the pivot angle of the adjusting device for first collimator of embodiment of the present invention neutron texture diffraction instrument is adjusted schematic diagram;
Fig. 7 is the one-piece construction schematic diagram of the adjusting device for first collimator of embodiment of the present invention neutron texture diffraction instrument;
Fig. 8 is the offset assembly structural representation of the adjusting device for first collimator of embodiment of the present invention neutron texture diffraction instrument;
Embodiment
Below in conjunction with the drawings and specific embodiments, present invention is described.
The embodiment of the present invention is according to the adjusting device for first collimator of the neutron texture diffraction instrument of China Advanced Research Reactor (CARR) design.Certainly, the technical scheme of the embodiment of the present invention is equally applicable on other neutron texture diffraction instrument.
Embodiment
The embodiment of the present invention provides a kind of adjusting device for first collimator of neutron texture diffraction instrument.Described neutron texture diffraction instrument comprises a plurality of first collimators, comprises translation guide rail, described translation guide rail be provided with for first collimator is installed and make each first collimator all can independent translation the translation unit of motion.
Figure 3 shows that the structural representation of first collimator, CARR pile neutron texture diffraction instrument be furnished with two divergence be respectively 10 ' and 30 ' first collimator, a collimating apparatus is only selected in each experiment, therefore according to spectrometer design proposal, can collimate divergence for first of experimental selection and be 10 ', 30 ' and Open (Open for not collimating apparatus).
As shown in Figure 4, adjusting gear comprise divergence be 10 ' and 30 ' first collimator 3 and translation guide rail 4, each first collimator 3 can be done independent horizontal along translation guide rail 4 and move, rather than integrated moving, the whole too high shortcoming of vertical device for moving and adjusting before so both having overcome, and wide unlike former collimating apparatus integral level mobile device.
As shown in Figure 5, at every turn according to requirement of experiment, the first collimator that will use moves to guideway centreline position, and over against neutron beam position, in figure, the position of dotted line is the position after right-hand member collimating apparatus moves.
As shown in Figure 6, the collimating apparatus that selection will be used is also moved to behind translation guideway centreline position, and its pivot angle is adjusted.Collimating apparatus pivot angle central composite design is in collimating apparatus porch, improved in design in the past pivot angle center in the way at collimating apparatus center, overcome after adjusting pivot angle and also will constantly adjust the way that horizontal level aligns neutron beam.
The structure of neutron texture diffraction instrument adjusting device for first collimator as shown in Figure 7 and Figure 8, translation unit comprises back up pad 6, back up pad 6 is provided with shift plate 5, in shift plate 5, first collimator is installed, shift plate 5 is connected with back up pad 6 by fixed block 10 towards one end of neutron beam direction, the shift plate 5 dorsad other end of neutron beam direction is connected with described back up pad by eccentric wheel 12, and excentric shaft 11 is for making shift plate 6 swing along described fixed block 10.Adjusting gear also comprises pulley guide rails 7, gear 8, gear track 9, gear 8 and gear track 9 engagements, be positioned at two step motor difference driven wheels 8 of back up pad 6 belows, gear 8 drives each back up pad 6 to make it in flat surface, along pulley guide rails 7, come and go translation, thus switch collimators very stably.
In addition, as shown in Figure 8, for the horizontal pivot angle of continuous setup collimating apparatus in flat surface, adopt eccentric type of drive, wherein, eccentric wheel 12 comprises rotation axis 11, and shift plate 5 adopts fixed block towards one end of neutron beam direction, the shift plate 5 dorsad other end of neutron beam direction adopts eccentric wheel, by eccentric rotation, reach the object that regulates collimating apparatus pivot angle, pivot angle adjustable extent is ± 30 '.
The set-up procedure of neutron texture diffraction instrument adjusting device for first collimator is as follows:
The first, first by divergence, be 10 ' and 30 ' first collimator be separately fixed in two shift plate 5 on adjusting gear translation guide rail 7, by step motor, the back up pad 6 of these two shift plate 5 belows is moved to translation guide rail 7 both sides, make translation guide rail 7 rooms, center over against neutron beam, if select 10 ' or 30 ' collimating apparatus, this collimating apparatus is moved to translation guide rail 7 rooms, center, neutron beam center is overlapped with center, collimating apparatus porch, if do not use first collimator, do not need mobile collimating apparatus;
The second,, after the collimating apparatus of selecting to use, the pivot angle of collimation device is finely tuned, and makes neutron beam and collimating apparatus keeping parallelism.Collimating apparatus pivot angle central composite design is at the center of collimating apparatus shift plate one end, and shift plate one end adopts fixed block, and the other end adopts stepper motor driven eccentric wheel, by eccentric rotation, reaches the object that regulates collimating apparatus pivot angle.
The adjusting device for first collimator of a kind of neutron texture diffraction instrument that in sum, the embodiment of the present invention provides is widely used in neutron texture diffraction instrument etc.
It should be noted that; above-mentioned specific embodiment is only exemplary; under above-mentioned instruction of the present invention, those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in protection scope of the present invention.It will be understood by those skilled in the art that specific descriptions are above in order to explain object of the present invention, not for limiting the present invention.Protection scope of the present invention is limited by claim and equivalent thereof.
Claims (4)
1. an adjusting device for first collimator for neutron texture diffraction instrument, described neutron texture diffraction instrument comprises a plurality of first collimators, it is characterized in that,
Comprise translation guide rail, described translation guide rail be provided with for first collimator is installed and make each first collimator all can independent translation the translation unit of motion;
Described translation unit comprises back up pad, described back up pad is provided with shift plate, in described shift plate, first collimator is installed, described shift plate is connected with described back up pad by fixed block towards one end of neutron beam direction, the described shift plate dorsad other end of neutron beam direction is connected with described back up pad by eccentric wheel, and described eccentric wheel is used for making described shift plate to swing along described fixed block.
2. the adjusting device for first collimator of neutron texture diffraction instrument according to claim 1, is characterized in that, the hunting range of described shift plate is ± 30 '.
3. the adjusting device for first collimator of neutron texture diffraction instrument according to claim 1, it is characterized in that, also comprise gear, described gear and gear track mesh and by direct motor drive, described gear is connected with described translation unit and drives described translation unit to do translation motion.
4. the adjusting device for first collimator of neutron texture diffraction instrument according to claim 1, is characterized in that, the divergence of described a plurality of first collimators is respectively 10 ', 30 ' and Open.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110200106.2A CN102332318B (en) | 2011-07-18 | 2011-07-18 | First collimator adjusting device of neutron texture diffractometer |
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| CN201110200106.2A CN102332318B (en) | 2011-07-18 | 2011-07-18 | First collimator adjusting device of neutron texture diffractometer |
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| CN102332318B true CN102332318B (en) | 2014-04-02 |
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| 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 |
| WO2019017233A1 (en) * | 2017-07-19 | 2019-01-24 | 国立大学法人茨城大学 | Neutron optical element and neutron source |
| CN108806818A (en) * | 2018-04-17 | 2018-11-13 | 东莞理工学院 | A kind of four knife diaphragms of adjustable neutron flow |
| 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 |
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| CN202205474U (en) * | 2011-07-18 | 2012-04-25 | 中国原子能科学研究院 | First collimator adjustment device of neutron texture diffraction instrument |
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| US3088031A (en) * | 1959-04-13 | 1963-04-30 | Allis Chalmers Mfg Co | Adjustable collimator |
| US4140129A (en) * | 1977-04-13 | 1979-02-20 | Applied Radiation Corporation | Beam defining system in an electron accelerator |
| JPH07119837B2 (en) * | 1990-05-30 | 1995-12-20 | 株式会社日立製作所 | CT device, transmission device, and X-ray generator |
| CN1175689A (en) * | 1996-09-01 | 1998-03-11 | 江汉石油管理局测井研究所 | Apparatus and method for measurement of opto-electric absorption cross-section index of rock sample by gamma absorption process |
| CN2627539Y (en) * | 2003-06-17 | 2004-07-21 | 浙江大学 | Digitalized electromagnetic driving adjustable optical attenuator |
| CN1817385A (en) * | 2006-03-03 | 2006-08-16 | 杭州华源伽玛医疗设备投资有限公司 | Radiant device for sliding and replacing integrated multiple collimator |
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