CN108872280A - A kind of probe position device for small-angle neutron scattering spectrometer - Google Patents
A kind of probe position device for small-angle neutron scattering spectrometer Download PDFInfo
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- CN108872280A CN108872280A CN201811091387.0A CN201811091387A CN108872280A CN 108872280 A CN108872280 A CN 108872280A CN 201811091387 A CN201811091387 A CN 201811091387A CN 108872280 A CN108872280 A CN 108872280A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/20—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials
- G01N23/201—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials by measuring small-angle scattering
- G01N23/202—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by using diffraction of the radiation by the materials, e.g. for investigating crystal structure; by using scattering of the radiation by the materials, e.g. for investigating non-crystalline materials; by using reflection of the radiation by the materials by measuring small-angle scattering using neutrons
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/05—Investigating materials by wave or particle radiation by diffraction, scatter or reflection
- G01N2223/054—Investigating materials by wave or particle radiation by diffraction, scatter or reflection small angle scatter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/10—Different kinds of radiation or particles
- G01N2223/106—Different kinds of radiation or particles neutrons
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Abstract
The invention discloses a kind of probe position devices for small-angle neutron scattering spectrometer.The mobile detector being located in small-angle neutron scattering spectrometer vacuum chamber of the device, drives the stay wire sensor movement connected thereon, and stay wire sensor transfers signals to computer by aviation plug；Computer-controlled stepper motor rotation is to drive conveyer belt sliding to drive the LED light on movable slider to move respective distance；LED light provides that detector motion is forward and backward, real-time, accurate location information in the process by indicating the scale crossed of accurate calibration.The device can monitor the position in small-angle neutron scattering spectrometer experimentation where detector in real time, have the advantages that simple to install, easily disassembled, real-time, registration, automation, labor-saving, is moving real-time, accurate location information and sample forward and backward, in the process to the distance between detector suitable for obtaining the detector in small-angle neutron scattering spectrometer vacuum chamber.
Description
Technical field
The invention belongs to neutron scattering original position automatic measurement technical fields, and in particular to one kind is used for small-angle neutron scattering
The probe position device of spectrometer.
Background technique
Small-angle neutron scattering technology is widely used and unique advantage in the research of the Material Fields such as soft substance, alloy.Benefit
With neutron for the identification capability of light element, small-angle neutron scattering technology combination isotope replacement method is in soft structure of matter solution
It analyses, dynamics, played key effect in the research such as molecule chain mechanism.However accurately monitor and obtain " sample to detector away from
From " be small-angle neutron scattering experimentation important link, be related to the precision and efficiency of experiment.Since small-angle neutron scattering is composed
The detector of instrument in the vacuum chamber, can not directly observe its specific location, occur in the back-and-forth motion of Serve Motor Control detector
The case where attracting " sample to detector distance " misalignment situations such as losing step, disconnect.In order to obtain accurately scattering arrow
Amount is badly in need of developing a set of device that can be realized real-time display " sample to detector distance ".Utilize high precision position sensor
In conjunction with Position Scale, accurate display probe position in real time may be implemented, and calibrate sample to detector distance ", it is small angle
Neutron scattering experiment provides new convenience.
Currently, domestic neutron dissipates（Spread out）It penetrates technology and is in the starting stage, it is not yet found that company dissipates for neutron（Spread out）It penetrates
Spectrometer design researches and develops such corollary apparatus for having accurate display probe position in real time.And X-ray is since detector is in vacuum
Outside cavity, similar device is not needed, is really found no based on synchrotron radiation light source exploration similar with commercial light source yet.In the world
Generally also using servo motor position signal as judgment basis on the small-angle neutron scattering platform of part, but all exist above-mentioned
The problem of, in the case where servo motor malfunctions needs power-off, position zero can waste the experimental period of a large amount of preciousnesses.Only with watching
It takes motor position signal also and cannot achieve intuitive real time probe positioning and " sample to detector distance " acquisition.
Currently, needing to develop a kind of probe position device for small-angle neutron scattering spectrometer, probe position dress
Detector can be made after experiment and be accurately positioned and to " sample to detection before small-angle neutron scattering experiment, in experimentation by setting
Device distance " parameter does real-time acquisition, provides great convenience for small-angle neutron scattering experiment.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of probe position dresses for small-angle neutron scattering spectrometer
It sets.
Probe position device for small-angle neutron scattering spectrometer of the invention, its main feature is that：The detector is fixed
Position device include stay wire sensor, aviation plug, computer, stepper motor, conveyer belt, movable slider, LED light, guide rail,
Bearing and scale；The stay wire sensor is connected on the detector in vacuum chamber, and passes through aviation plug and outside
Computer communication connection, meanwhile, computer and stepper motor communication connection, computer receive stay wire sensor signal and to steps
It sends and instructs into motor, control stepper motor movement；
The conveyer belt of annular is installed between the stepper motor and bearing, is fixed with drive at the annular center position of conveyer belt
Dynamic guide rail, one end of sliding block is fixed on a moving belt, and the other end of sliding block is fixed on driving guide rail, stepper motor driving transmission
Band band movable slider is along driving guide rail linear motion；
The scale indicates scale, is placed in parallel with driving guide rail；
LED light is housed, LED light is arrowhead-shaped, the position of arrow indicator scale, and arrow is anti-on the movable slider
Answer the real time position of detector.
The stay wire sensor, aviation plug, conveyer belt, movable slider, guide rail, bearing, scale material be in anti-
The metal material of son activation is stainless steel, aluminium and cadmium.
The material of the conveyer belt is rubber.
The small-angle neutron scattering spectrometer is pile neutron source or spallation neutron target.
Probe position device for small-angle neutron scattering spectrometer of the invention has the characteristics that：
1. device is connected on the detector in the detector vacuum chamber for needing to demarcate using stay wire sensor, and is inserted by aviation
Head is connect with external Computer signal, available real-time detector accurate position signals, greatly increase intuitive with
Reduce the possibility of maloperation；If losing the feelings such as step, disconnection using what is occurred in the back-and-forth motion of Serve Motor Control detector
Condition can attract the case where " sample to detector distance " misalignment；
2. the material of stay wire sensor, aviation plug, conveyer belt, movable slider, guide rail, bearing and scale in device is stainless
The metal material processing of the anti-neutron activation such as steel, aluminium, cadmium forms；Conveyer belt is rubber product, is filled after guaranteeing neutron scattering experiment
The safety set；
3. the stepper motor, bearing and conveyer belt in device can be realized closed loop moving, slide rail can accurately control activity
The position of sliding block, LED light can intuitively show the position of movable slider by scale；
4. neutron source used in the small-angle neutron scattering spectrometer in device can use pile neutron source or spallation neutron target.
The main working process of probe position device for small-angle neutron scattering spectrometer of the invention is as follows：
A. the probe position device for being used for small-angle neutron scattering spectrometer of the invention is installed to small-angle neutron scattering experiment line
On standing, power supply line and signal wire are connected into the detector vacuum chamber of small-angle neutron scattering spectrometer using aviation plug；By scale
It is fixed on the vacuum chamber outer surface of the detector of small-angle neutron scattering spectrometer in parallel；
B. control power supply is opened, LED light switch is opened, corresponding stepper motor program is set；
C. the Bit andits control program in computer is opened, the detector of small-angle neutron scattering spectrometer is first moved to zero-bit, is adjusted
LED light is corresponding with zero-bit, and passes through the corresponding relationship of computer settings stay wire sensor signal and physical location, computer
It receives stay wire sensor signal and is sent by Bit andits control program to stepper motor and instructed, control stepper motor rotation, stepping
Motor driven conveyer belt band movable slider is along driving guide rail linear motion；
D. the Bit andits control program for passing through computer, adjusts " sample to detector distance " parameter required for experiment, detector
Setting in motion observes that the LED light outside detector cavity is moved along guide rail, and LED light instruction is real-time, accurate location is believed
Breath；When detector is moved to designated position, LED light stops movement, and LED light Location information is anti-by scale
" sample to detector distance " should be gone out；
Probe position device for small-angle neutron scattering spectrometer of the invention can be realized to be combined with small-angle neutron scattering, and
There is provided that detector motion is forward and backward, real-time, accurate position in the process by indicating the scale crossed of accurate calibration by LED light
Confidence breath, rapidly obtains " sample to detector distance " parameter.Overcome small-angle neutron scattering detector in the vacuum chamber and
The limitation of its specific location can not directly be observed.With simple to install, easily disassembled, real-time observation, accurate, automation, save
The advantages that manpower, is suitable for small-angle neutron scattering spectrometer and needs to convert sample often to detector distance " use condition of parameter,
New convenience is provided for small-angle neutron scattering experiment.
Detailed description of the invention
Fig. 1 is the structure chart of the probe position device for small-angle neutron scattering spectrometer of the invention.
In figure, 1. stay wire sensor, 2. aviation plug, 3. computer, 4. stepper motor, 5. conveyer belt, 6. activity
9. bearing of sliding block 7.LED 8. guide rail of indicator light, 10. scale.
Specific embodiment：
The present invention will be described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the probe position device for small-angle neutron scattering spectrometer of the invention includes stay wire sensor
1, aviation plug 2, computer 3, stepper motor 4, conveyer belt 5, movable slider 6, LED light 7, guide rail 8, bearing 9 and scale
10；The stay wire sensor 1 is connected on the detector in vacuum chamber, and passes through aviation plug 2 and external calculating
3 communication connection of machine, meanwhile, computer 3 and 4 communication connection of stepper motor, computer 3 receive 1 signal of stay wire sensor and to steps
It sends and instructs into motor 4, control stepper motor 4 moves；
The conveyer belt 5 of annular is installed between the stepper motor 4 and bearing 9, is fixed at the annular center position of conveyer belt 5
There is driving guide rail 8, one end of sliding block 6 is fixed on conveyer belt 5, and the other end of sliding block 6 is fixed on driving guide rail 8, stepping electricity
Machine 4 drives conveyer belt 5 to move along a straight line with movable slider 6 along driving guide rail 8；
The scale 10 indicates scale, is placed in parallel with driving guide rail 8；
LED light 7 is housed on the movable slider 6, LED light 7 is arrowhead-shaped, the position of arrow indicator scale 10,
The real time position of arrow reaction detector.
The stay wire sensor 1, aviation plug 2, conveyer belt 5, movable slider 6, guide rail 8, bearing 9, scale 10 material
Material is the metal material of anti-neutron activation, is stainless steel, aluminium and cadmium.
The material of the conveyer belt 5 is rubber.
The small-angle neutron scattering spectrometer is pile neutron source or spallation neutron target.
Embodiment 1
Small-angle neutron scattering experimental study silicon rubber nano composite material.
Experiment purpose：
Silicon rubber nano composite material is made of macromolecule matrix, nano-filled particle, vulcanizing agent and combination glue etc..Yin Qinaigao
The incomparable excellent properties of other rubber such as warm, low temperature resistant, Flouride-resistani acid phesphatase, resistance to ozone, physiological inertia, electric insulation, obtain state
The fields extensive utilizations such as anti-industry, aerospace, health care, investigation of materials.For complete detection silicon rubber nano composite wood
The wide dimensional properties of Material system, small-angle neutron scattering means can in a wide range in test system 10 rans just
The aggregation that grade particle fusion is 100-300 nanometers.This experiment is intended to the test limits using small-angle neutron scattering spectrometer（1-
500 nanometers）, corresponding " sample to detector distance " is 1 meter, and silicon rubber nano is tested in the combination of 5 meters and 11 meters three conditions
Composite material system scattered signal, and important microstructure parameters are obtained, help understands silicon rubber nano composite material system micro-structure
With being associated with for macro-mechanical property, the formula of material is and guided to regulate and control.
Experimentation：
Using 50 parts of silicon rubber nano composite material system, it is prepared into 1 millimeters thick, 12 mm wides, 12 millimeters of sheet sample
Item is placed on the sample stage of small-angle neutron scattering spectrometer at room temperature.Small-angle neutron scattering control program is set and arrives setup test
State." sample to detector distance " that small-angle neutron scattering spectrometer is arranged first is 11 meters（Initial position）, start in small angle
The control program of son scattering spectrometer, detector start to move, drive stay wire sensor 1 to move, passed signal by aviation plug 2
It is defeated to arrive computer 3；Computer 3 controls the rotation of stepper motor 4 and conveyer belt 5 is driven to slide；LED light on movable slider 6 with
Movement respective distance, when detector is moved at 11 meters of formulation, 6 stop motion of LED light, and indicate in scale 10
11 meters of positions.Experiment condition has, and starts the small-angle neutron scattering test job under the conditions of 11 meters.It is tested Deng being tested at 11 meters
At " sample to detector distance " of setting small-angle neutron scattering spectrometer is 5 meters, starts the control journey of small-angle neutron scattering spectrometer
Sequence, detector start to move, and the LED light 6 of probe position device moves, and detector is moved at 5 meters of formulation
When, LED light stop motion, and indicate in 5 meters of positions of scale 10.Small-angle neutron scattering test under the conditions of starting 5 meters
Work.Similarly, the test job under the conditions of " sample to detector distance " is 1 meter is completed according to above procedure.
This example completes silicon rubber nano composite material system by three " sample to detector distance " experiment conditions
The small-angle neutron scattering data acquisition of spectrometer gamut it is multiple to have obtained silicon rubber nano and by subsequent data reconstruction
The completion small-angle neutron scattering data of condensation material system, and then obtain primary particle and aggregate size and distributed intelligence；It is real
During testing, the probe position device of small-angle neutron scattering spectrometer provide detector motion it is forward and backward, in the process it is real-time,
Accurate location information.So that experimentation is compact, efficiently, use manpower and material resources sparingly.
Embodiment 2
The time small-angle neutron scattering experimental study of Polymer Solution self assembly.
The present embodiment and the embodiment of embodiment 1 are essentially identical, and the main distinction is the sample micro-structure due to concern
Size will be 50 rans, so " sample to detector distance " of the small-angle neutron scattering spectrometer chosen is 3 meters and 7 meters,
It is more suitable for the research of the system.
This example is tested by the time small-angle neutron scattering of Polymer Solution self assembly, and then obtains Polymer Solution
Micella size and distribution under self assembly difference acid-base condition.
What the present invention did not elaborated partly belongs to techniques well known.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the present invention is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the spirit and scope of the present invention in, these
Variation is it will be apparent that all utilize the innovation and creation of present inventive concept in the column of protection.
Claims (3)
1. a kind of probe position device for small-angle neutron scattering spectrometer, it is characterised in that：The probe position dress
It sets including stay wire sensor（1）, aviation plug（2）, computer（3）, stepper motor（4）, conveyer belt（5）, movable slider（6）,
LED light（7）, guide rail（8）, bearing（9）And scale（10）；The stay wire sensor（1）It is connected to and is located in vacuum chamber
Detector on, and pass through aviation plug（2）With external computer（3）Communication connection, meanwhile, computer（3）With stepping electricity
Machine（4）Communication connection, computer（3）Receive stay wire sensor（1）Signal and to stepper motor（4）Instruction is sent, stepping is controlled
Motor（4）Movement；
The stepper motor（4）And bearing（9）Between be equipped with annular conveyer belt（5）, conveyer belt（5）Annular center position
The place of setting is fixed with driving guide rail（8）, sliding block（6）One end be fixed on conveyer belt（5）On, sliding block（6）The other end be fixed on drive
Dynamic guide rail（8）On, stepper motor（4）Drive conveyer belt（5）Band movable slider（6）Along driving guide rail（8）Linear motion；
The scale（10）Scale is indicated, with driving guide rail（8）It is placed in parallel；
The movable slider（6）It is upper that LED light is housed（7）, LED light（7）To be arrowhead-shaped, arrow indicator scale（10）
Position, arrow react detector real time position.
2. according to claim 1 be used for a kind of probe position device for small-angle neutron scattering spectrometer, feature
It is：The stay wire sensor（1）, aviation plug（2）, conveyer belt（5）, movable slider（6）, guide rail（8）, bearing（9）, mark
Ruler（10）Material be anti-neutron activation metal material, be stainless steel, aluminium and cadmium.
3. according to claim 1 be used for a kind of probe position device for small-angle neutron scattering spectrometer, feature
It is：The conveyer belt（5）Material be rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091387.0A CN108872280B (en) | 2018-09-19 | 2018-09-19 | Detector positioning device for small-angle neutron scattering spectrometer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811091387.0A CN108872280B (en) | 2018-09-19 | 2018-09-19 | Detector positioning device for small-angle neutron scattering spectrometer |
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| CN108872280A true CN108872280A (en) | 2018-11-23 |
| CN108872280B CN108872280B (en) | 2023-05-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111307844A (en) * | 2020-04-03 | 2020-06-19 | 中国工程物理研究院核物理与化学研究所 | Rubber structure determination method based on small-angle neutron scattering |
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Cited By (2)
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