CN104777180B - Device and method for adjusting sample scattered plane of cold neutron triple-axis spectrometer - Google Patents
Device and method for adjusting sample scattered plane of cold neutron triple-axis spectrometer Download PDFInfo
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- CN104777180B CN104777180B CN201510187546.7A CN201510187546A CN104777180B CN 104777180 B CN104777180 B CN 104777180B CN 201510187546 A CN201510187546 A CN 201510187546A CN 104777180 B CN104777180 B CN 104777180B
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Abstract
The invention relates to a device and a method for adjusting the sample scattered plane of a cold neutron triple-axis spectrometer. The device comprises a rotary table, a lifting table, an upper tilt table, a lower tilt table, round pins, a circular support plate and an upper computer, wherein the rotary table is fixed on the lifting table through one round pin; the lifting table is fixed on the upper tilt table through one round pin; the upper tilt table is fixed on the lower tilt table through one round pin; the lower tilt table is fixed on the circular support plate through one round pin; the circular support plate is fixed on the sample table of the cold neutron triple-axis spectrometer through a location round pin and a screw; the location round pin ensures the superposition of the central axis EE' of the circular support plate and the z-directional central axis of the sample table; the sample table provides a theta rotary table and a 2theta rotary table rotating around the central axis EE' of the circular support plate; the theta rotary table drives the circular support plate to rotate, the 2theta rotary table drives a detector to rotate, and the detector is used for recording the intensity of the outgoing neutrons of a sample and sending the recorded result to the upper computer.
Description
Technical field
The present invention relates to Neutron scattering technology field, especially with regard to a kind of axle spectrometer (the cold neutron of cold neutrons three
Triple axis spectrometer) sample scattering plane adjusting apparatus and method.
Background technology
Neutron scattering technology is fully realized by different types of neutron scattering spectrometer.Neutron scattering follows down lattice
The Ewald balls in arrow space, meetWherein,For incident neutron beam vector,For outgoing neutron beam vector,To scatter wave vector.By changingWithSize andDirection, can measureAndIn the plane of formation
Different size and the scattering wave vector in directionIt is all detectableThe plane of composition referred to as scatters plane.For the axle of cold neutrons three
Spectrometer,WithAll it is the vector in horizontal plane, soAlso one it is positioned in horizontal plane, horizontal plane can only be measured in other words
Interior scattering wave vector, therefore sample need to be positioned over sample stage and so that our scattering planes interested are in incident neutron beam
In the horizontal plane formed with outgoing neutron beam, so as to carry out the measurement of related physical quantity.The scattering plane of sample is generally by two
Reciprocal lattice vector determines that the two reciprocal lattice vectors are generally the crystal orientation of institute's test sample product.
The axle spectrometer of First cold neutrons three is built on the cold neutrons bunch of the reactor of Chinese engineering research institute, and state
The sample stage of the axle spectrometer of existing cold neutrons three is the same on border, there is provided two θ turntables and 2 θ turntables around z-axis revolution,
Two tilting tables are installed again on sample stage, accuracy, high efficiency are lacked for the adjustment that sample scatters plane, cause sample first
After secondary two tilting tables being positioned on sample stage, need near sample stage by virtue of experience to be manually adjusted in multiple times or weight
New fixed sample, is little by little adjusted to the scattering plane of sample in acceptable error range, has so both wasted substantial amounts of
The neutron streaming time, experimenter is caused repeatedly to be exposed in the radiation environment of remnants again.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of scattering plane that can accurately, efficiently determine sample
The axle spectrometer of cold neutrons three sample scattering plane adjusting apparatus and method.
For achieving the above object, the present invention takes technical scheme below：A kind of sample scattering of the axle spectrometer of cold neutrons three is flat
The adjusting apparatus in face, it is characterised in that：It include a turntable, a lifting platform, a upper angled platform, a bottom tilting table, four
Straight pin, a circular base slab and a host computer；The turntable includes that rotary table top fixed seat, rotary table top, first rotate
Mechanism, the first stepper motor and the first encoder；The top of the rotary table top fixed seat is solid by first rotating mechanism
Surely the rotary table top is connected, the top center of the rotary table top is provided with one to be used to fix the installing hole of specimen holder；It is described
The input of the first rotating mechanism connects the output end of first stepper motor, and the first stepper motor rotational band is dynamic described
First rotating mechanism is rotated, and then drives the rotary table top and specimen holder mounted thereto to rotate；Described first
Encoder is fixedly mounted in the rotating shaft of the first stepper motor afterbody is used for the angle of rotation for measuring first stepper motor
Degree, and the rotational angle of measurement is sent to into the host computer by cable；In addition, the bottom of the rotary table top fixed seat
Center is additionally provided with a connection pin-and-hole；The lifting platform include Lifting platform fixed seat, Lifting platform, elevating mechanism, second
Stepper motor and second encoder；The top of the Lifting platform fixed seat connects the lifting platform by the elevating mechanism
Face, the input of the elevating mechanism connects the output end of second stepper motor, and the second stepper motor rotational band is moved
The elevating mechanism moves up and down；The second encoder is fixedly mounted in the rotating shaft of the second stepper motor afterbody to be used for
The rotational angle of second stepper motor is measured, and the rotational angle of measurement is sent to into the host computer by cable；
In addition, the top center of the Lifting platform is additionally provided with one for being connected use with the bottom centre of the rotary table top fixed seat
Pin-and-hole carries out the pin-and-hole of pin joint；When using, the rotary table top fixed seat is fixed on by the lifting platform by the straight pin
On face；The bottom centre of the Lifting platform fixed seat is provided with a connection pin-and-hole；The upper angled platform inclines including top
Oblique arc-shaped table board fixed seat, upper angled arc-shaped table board, the second rotating mechanism, the 3rd stepper motor and the 3rd encoder；It is described
Horizontal arc track is provided with the top of upper angled arc-shaped table board fixed seat, the upper angled arc-shaped table board bottom is provided with
The arc-shaped protrusions structure matched with the horizontal arc track, the upper angled arc-shaped table board passes through second rotating machine
Structure is arranged on the top of the upper angled arc-shaped table board fixed seat, the input connection the described 3rd of second rotating mechanism
The output end of stepper motor, the 3rd stepper motor is rotated and drives second rotating mechanism to rotate, and makes the upper angled
Arc-shaped table board is rotated along the described horizontal arc track of the upper angled arc-shaped table board fixed seat, the 3rd encoder
Being fixedly mounted in the rotating shaft of the 3rd stepper motor afterbody is used for the rotational angle for measuring the 3rd stepper motor, and will
The rotational angle of measurement is sent to the host computer by cable；In addition, the top of the upper angled arc-shaped table board is arranged
Have one for being connected the pin-and-hole that pin joint is carried out with pin-and-hole with the Lifting platform fixed seat bottom centre；When using, by described
Straight pin is fixed on the Lifting platform fixed seat on the upper angled arc-shaped table board；The upper angled arc-shaped table board is consolidated
The bottom centre of reservation is provided with a connection pin-and-hole；The lower tilt platform include lower tilt arc-shaped table board fixed seat, under
Portion inclines arc-shaped table board, the 3rd rotating mechanism, the 4th stepper motor and the 4th encoder；The lower tilt arc-shaped table board is fixed
The top of seat is provided with longitudinal arc track, and the lower tilt arc-shaped table board bottom is provided with and longitudinal arc track phase
The arc-shaped protrusions structure of matching, the lower tilt arc-shaped table board is arranged on the lower tilt by the 3rd rotating mechanism
The top of arc-shaped table board fixed seat, the input of the 3rd rotating mechanism connects the output end of the 4th stepper motor, institute
State the 4th stepper motor and rotate drive the 3rd rotating mechanism rotation, make the lower tilt arc-shaped table board incline along the bottom
Tiltedly described longitudinal arc track of arc-shaped table board fixed seat is rotated, and the 4th encoder is fixedly mounted on the 4th step
It is used to measure the rotational angle of the 4th stepper motor in the rotating shaft of stepper motor afterbody, and by the rotational angle of measurement by electricity
Cable is sent to the host computer, in addition, between the centre of gyration of the lower tilt platform and the lower tilt arc-shaped table board
Vertical range be equal to the upper angled platform height and the upper angled arc-shaped table board to the upper angled platform time
The vertical range sum of shaft axis, the top center of the lower tilt arc-shaped table board is provided with one to be used for and the upper angled
Bottom centre's connection of arc-shaped table board fixed seat carries out the pin-and-hole of pin joint with pin-and-hole；When using, will be described by the straight pin
Upper angled arc-shaped table board fixed seat is fixed on the lower tilt arc-shaped table board；The lower tilt arc-shaped table board fixed seat
Bottom centre be provided with a connection pin-and-hole；One is provided with the top of the circular base slab is used for and the lower tilt arc
Shape table top fixed seat bottom centre's connection carries out the pin-and-hole of pin joint with pin-and-hole；When using, by the straight pin by the bottom
Incline arc-shaped table board fixed seat to be fixed on the circular base slab；The bottom of the circular base slab be provided with for realize with
The centralized positioning of the sample stage of the axle spectrometer of cold neutrons three and fixed positioning cylinder pin-and-hole and screwed hole；The host computer is according to connecing
The rotational angle of first stepper motor for receiving calculates the actual rotation angle of the rotary table top, according to the institute for receiving
The rotational angle for stating the second stepper motor calculates actual rising or the slippage of the Lifting platform, according to the 3rd stepping electricity
The rotational angle of machine calculates the actual lateral rotation angle of the upper angled arc-shaped table board, according to the 4th step for receiving
What the rotational angle of stepper motor calculated the lower tilt arc-shaped table board actually longitudinally rotates angle, judge the rotary table top,
Whether Lifting platform, upper angled arc-shaped table board, lower tilt arc-shaped table board move in place, if motion is not in place, control
First stepper motor, the second stepper motor, the 3rd stepper motor, the 4th stepper motor are rotated further；If motion is in place,
Then control first stepper motor, the second stepper motor, the 3rd stepper motor, the 4th stepper motor to stop operating.
First rotating mechanism, the second rotating mechanism and the 3rd rotating mechanism adopt worm and worm gear.
The elevating mechanism adopts closely-pitched lead screw mechanism.
A kind of method of adjustment of the adjusting apparatus of the sample scattering plane of the axle spectrometer of cold neutrons three, comprises the following steps：1)
Installation adjusting device：Adjusting apparatus are arranged on θ turntables, detector is arranged on 2 θ turntables, adjusting apparatus and detection
Device rotates around the z of sample stage to central axis；2) adjusting apparatus initialization：The rotation of θ turntables is adjusted by host computer to cause
The axis of rotation CC ' of upper angled platform and incident neutron beamAngle S1=0, the axis of rotation DD ' of lower tilt platform is vertical
In incident neutron beam2 θ turntables are adjusted by host computer to rotate so that detector and incident neutron beamAngle S2=0,
θ turntables, 2 θ turntables and turntable rotate counterclockwise are defined for just；3) sample is installed：3.1) sample is placed in into experimental temperature
Under, and turntable top is fixed to by specimen holder, when fixed, some for causing sample center is marked according to sample with reference to brilliant
ToOverlap with the axis of rotation DD ' of lower tilt platform, due to there is error in fixed sample, crystal orientation is referred to after fixingThere is misalignment angle δ and the axis of rotation DD ' of lower tilt platform between in the horizontal plane；3.2) stepping of PC control second
Motor is rotated, and then drives Lifting platform to rise or fall so that the center of sample and incident neutron beamCenter in same
One horizontal plane；4) crystal orientation is adjusted4.1) the θ turntables of PC control 2 rotation make detector rotate to incident neutron beam
Angle S2Reference crystal orientation under=room temperatureAngle of scatteringPlace；PC control θ turntable drives circular base slab
Rotation, when axis of rotation CC ' and the incident neutron beam of upper angled platformAngle S1 In the range of
During variation, host computer carries out Gauss curve fitting to the neutron intensity that detector is recorded and draws angle S at peak intensity1=S0, calculate deviation
AngleHost computer is by the dynamic rotary table top of the first stepper motor rotational band of control, specimen holder and sample rotation
Turn δ so that refer to crystal orientationProjection in the horizontal plane overlaps with the axis of rotation DD ' of lower tilt platform, PC control θ
Turntable drives circular base slab to rotate and causes angle4.2) the sample crystal orientation under experimental temperatureDissipate
Draw under firing angle and room temperatureThere is difference, PC control θ turntable and 2 θ turntables drive respectively circular base slab
Rotation causes the axis of rotation CC ' and incident neutron beam of upper angled platformAngle S1 Visit with driving
Survey device to rotate so that detector and incident neutron beamAngle S2 In the range of with equidirectional and step change
Rate presses Δ S1：ΔS2=1:2 change；Host computer carries out Gauss curve fitting to the neutron intensity that detector is recorded and draws folder at peak intensity
AngleAnglePC control θ turntable and the rotation of 2 θ turntables cause respectively angleAngleHost computer according toThe lattice for calculating sample under experimental temperature is normal
Number；4.3) θ turntables and 2 θ turntables are remained stationary as, and the stepper motor of PC control the 3rd is rotated and drives upper angled arc platform
Face is around axis of rotation CC ' rotations；In rotary course, host computer carries out Gauss curve fitting and obtains appearance to the neutron intensity that detector is recorded
The angle of strength upper angled arc-shaped table board is sgu；The stepper motor of PC control the 3rd is rotated and drives upper angled arc platform
Face rotates to angle sgu so thatIn horizontal plane, overlap with the axis of rotation DD ' of lower tilt platform, incline perpendicular to top
The axis of rotation CC ' of sloping platform；5) crystal orientation is adjusted5.1) host computer adjust 2 θ turntables rotation make detector rotate to incidence
Neutron beamAngle S2Reference crystal orientation under=room temperatureAngle of scatteringPlace, according toWith refer to crystal orientation
With refer to crystal orientationBetween angle α, calculate the axis of rotation CC ' of upper angled platform and incident neutron beamAnglePC control θ turntable and 2 θ turntables drive respectively circular base slab to rotate so that top is inclined
The axis of rotation CC ' of sloping platform and incident neutron beamAngle S1 Make with driving detector to rotate
Obtain detector and incident neutron beamAngle S2 In the range of with equidirectional and step change rate presses Δ
S1：ΔS2=1：2 change, and host computer carries out Gauss curve fitting to the neutron intensity that detector is recorded and draws angle at peak intensityAnglePC control θ turntable and the rotation of 2 θ turntables cause respectively angleAngleHost computer according toThe lattice for calculating sample under experimental temperature is normal
Number；5.2) θ turntables and 2 θ turntables are remained stationary as, and the stepper motor of PC control the 4th is rotated and drives lower tilt arc platform
Face is around axis of rotation DD ' rotations；In rotary course, host computer carries out Gauss curve fitting and obtains appearance to the neutron intensity that detector is recorded
The angle of strength lower tilt arc-shaped table board is sgl, and the stepper motor of PC control the 4th is rotated and drives lower tilt arc platform
Face rotates to angle sgl so that refer to crystal orientationWith reference to crystal orientationWith incident neutron beamIt is located in the same horizontal plane.
Due to taking above technical scheme, it has advantages below to the present invention：1st, the present invention include turntable, lifting platform,
Upper angled platform, lower tilt platform, straight pin and circular base slab, turntable is arranged on lifting platform top by a straight pin
Portion, lifting platform bottom is arranged on upper angled platform top by a straight pin, and upper angled platform bottom passes through a straight pin
Installed in lower tilt platform top, lower tilt platform bottom is arranged on circular base slab top, circle by a straight pin
Fagging is fixedly mounted on the sample stage for providing θ turntables and 2 θ turntables, can be rotated with θ turntables, therefore with reliability
Space geometry relation structure, can accurately carry out the adjustment and change of sample scattering plane, positioning precision is high so that sample
The space matrix of product is simple, regulated efficiency is high, improves efficiency, the operability of neutron scattering experiment.2nd, the present invention is due to the
The angle of measurement is sent to host computer by one encoder, second encoder, the 3rd encoder and the 4th encoder, and host computer can be with
According to the angle of the actual rising of angle calculation sample or slippage and actual rotation for receiving, and enter to advance according to result of calculation
One successive step, compared to manually by virtue of experience manually adjusting to sample, adjustment result is more accurate, it is to avoid waste substantial amounts of
The neutron streaming time, while experimenter can be made to be exposed under neutron irradiation environment, so as to enhance experimenter's
Security.3rd, the elevating mechanism of lifting platform of the present invention adopts closely-pitched lead screw mechanism, can according to the pitch of closely-pitched lead screw
So that lifting platform is accurately positioned, the first rotating mechanism, the second rotating mechanism and the 3rd rotating mechanism adopt worm and worm gear,
The rotation of rotary table top, upper angled arc-shaped table board, lower tilt arc-shaped table board can be obtained according to the speed reducing ratio of worm and wormwheel
Angle, it is possible to achieve the height of sample, the accurate adjustment of the anglec of rotation and positioning.The present invention can be widely applied to sample scattering
During the adjustment of plane.
Description of the drawings
Fig. 1 is the structural representation of the present invention, wherein, (a) be the present invention front view, be (b) (a) along F-F directions
Sectional view, (c) be (a) top view, (d) be the present invention 3-D view；
Fig. 2 is sample crystal orientationWithPosition view, wherein, (a) be sample crystal orientationWithIn the horizontal plane
Initial positional relationship schematic diagram；B () is sample crystal orientationWithPosition view before error transfer factor in the horizontal plane；C () is
Sample crystal orientationWithPosition view after error transfer factor in the horizontal plane；D () is the axis of rotation CC ' of upper angled platform
With incident neutron beamAngle S1For sample crystal orientation under room temperatureAngle of scatteringHalf position view；
Fig. 3 is crystal orientationIt is adjusted to the position view consistent with the axis of rotation of lower tilt platform；
Fig. 4 is crystal orientationIt is adjusted to the position view consistent with the axis of rotation of upper angled platform；
Fig. 5 is sample crystal orientation in embodimentWithPosition view, wherein, (a) be sample crystal orientationWithIn water
Initial positional relationship schematic diagram in plane；B () is sample crystal orientationWithIn the horizontal plane the position before error transfer factor is illustrated
Figure；C () is sample crystal orientationWithPosition view after error transfer factor in the horizontal plane；D () is the revolution of upper angled platform
Axis CC ' and incident neutron beamAngle S1For sample crystal orientation under room temperatureAngle of scatteringHalf position illustrate
Figure.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in figure 1, the sample of the axle spectrometer of cold neutrons three of the present invention scatters the adjusting apparatus of plane, it includes a rotation
Platform 1, a lifting platform 2, a upper angled platform 3, a bottom tilting table 4, four straight pins 5, a circular base slab 6 and a host computer.
Turntable 1 is used to adjust rotational angle of the specimen holder around z-axis, and it includes rotary table top fixed seat 11, rotary table top
12nd, the first rotating mechanism (not shown), the first stepper motor 13 and the first encoder 14；The top of rotary table top fixed seat 11
Portion is fixedly connected rotary table top 12 by the first rotating mechanism, and the top center of rotary table top 12 is provided with one for fixing sample
The installing hole of frame, in the embodiment of the present invention size of installing hole be Φ 20H7, depth 5mm, but not limited to this；First rotating mechanism
Input connect the first stepper motor 13 output end, the first stepper motor 13 rotate drive the first rotating mechanism rotate, enter
And table top 12 is rotated and specimen holder mounted thereto rotates；First encoder 14 is fixedly mounted on the first stepping
It is used for the rotational angle of the first stepper motor 13 of measurement in the rotating shaft of the afterbody of motor 13, and the rotational angle of measurement is passed through into cable
Line is sent to host computer；In addition, the bottom centre of rotary table top fixed seat 11 is additionally provided with a connection pin-and-hole, the present invention is implemented
Example in pin-and-hole size be Φ 20H7, depth 5mm, but not limited to this.
Lifting platform 2 is used to adjust the height of turntable 1 and specimen holder along z-axis, and it includes Lifting platform fixed seat 21, lifting
Table top 22, elevating mechanism (not shown), the second stepper motor 23 and second encoder 24；The top of Lifting platform fixed seat 21
Portion connects Lifting platform 22 by elevating mechanism, and the input of elevating mechanism connects the output end of the second stepper motor 23, and second
Stepper motor 23 is rotated and drives elevating mechanism to move up and down；Second encoder 24 is fixedly mounted on the afterbody of the second stepper motor 23
It is used for the rotational angle of the second stepper motor 23 of measurement in rotating shaft, and the rotational angle of measurement is sent to by cable upper
Machine；In addition, the top center of Lifting platform 22 is additionally provided with one for being connected use with the bottom centre of rotary table top fixed seat 11
Pin-and-hole carries out the pin-and-hole of pin joint, in the embodiment of the present invention size of this pin-and-hole be Φ 20H7, depth 5mm, but not limited to this, use
When, rotary table top fixed seat 11 is coordinated with Φ 20H7/g6 gaps by straight pin 5 realizes that centralized positioning is fixed on Lifting platform
On 22, Φ 20H7/g6 gaps coordinate the median vertical line BB ' for ensureing lifting platform 2 to overlap with the axis of rotation AA ' of turntable 1；Lifting
The bottom centre of table top fixed seat 21 is provided with a connection pin-and-hole, and this pin-and-hole size is Φ 20H7, depth in the embodiment of the present invention
5mm, but not limited to this.
Upper angled platform 3 is used to adjust the rotational angle of lifting platform 2, turntable 1 and specimen holder around X-axis, and it includes top
Incline arc-shaped table board fixed seat 31, upper angled arc-shaped table board 32, the second rotating mechanism (not shown), the 3rd stepper motor
33 and the 3rd encoder 34；The top of upper angled arc-shaped table board fixed seat 31 is provided with horizontal arc track, upper angled arc
The bottom of shape table top 32 is provided with the arc-shaped protrusions structure matched with horizontal arc track, and upper angled arc-shaped table board 32 is by the
Two rotating mechanisms are arranged on the top of upper angled arc-shaped table board fixed seat 31, and the input of the second rotating mechanism connects the 3rd step
The output end of stepper motor 33, the 3rd stepper motor 33 is rotated and drives the second rotating mechanism to rotate, and makes upper angled arc-shaped table board 32
Horizontal arc track along upper angled arc-shaped table board fixed seat 31 is rotated, and the 3rd encoder 34 is fixedly mounted on the 3rd step
It is used for the rotational angle of the 3rd stepper motor 33 of measurement in the rotating shaft of the afterbody of stepper motor 33, and by the rotational angle of measurement by electricity
Cable is sent to host computer；In addition, the top center of upper angled arc-shaped table board 32 is provided with one for fixing with Lifting platform
Seat 21 bottom centre connection carries out the pin-and-hole of pin joint with pin-and-hole, and this pin-and-hole size is Φ 20H7, depth 5mm in the embodiment of the present invention,
But not limited to this；When using, Lifting platform fixed seat 21 is coordinated with Φ 20H7/g6 gaps by straight pin 5 realizes center
Positioning is fixed on upper angled arc-shaped table board 32, and Φ 20H7/g6 gaps coordinate the axis of rotation CC ' for ensureing upper angled platform 3
O points are vertically intersected in horizontal plane with the axis of rotation AA ' of turntable 1 at incident neutron beam center；Upper angled arc
The bottom centre of table top fixed seat 31 is provided with a connection pin-and-hole, and this pin-and-hole size is Φ 20H7, depth in the embodiment of the present invention
5mm, but not limited to this.
Lower tilt platform 4 is used to adjust the angle of rotation of upper angled platform 3, lifting platform 2, turntable 1 and specimen holder around Y-axis
Degree, it includes that lower tilt arc-shaped table board fixed seat 41, lower tilt arc-shaped table board 42, the 3rd rotating mechanism (are not shown in figure
Go out), the 4th stepper motor 43 and the 4th encoder 44；The top of lower tilt arc-shaped table board fixed seat 41 is provided with longitudinal arc
Track, the bottom of lower tilt arc-shaped table board 42 is provided with the arc-shaped protrusions structure matched with longitudinal arc track, lower tilt
Arc-shaped table board 42 is arranged on the top of lower tilt arc-shaped table board fixed seat 41 by the 3rd rotating mechanism, the 3rd rotating mechanism
Input connects the output end of the 4th stepper motor 43, and the 4th stepper motor 43 is rotated and drives the 3rd rotating mechanism to rotate, makes down
Portion inclines arc-shaped table board 42 and is rotated along longitudinal arc track of lower tilt arc-shaped table board fixed seat 41, the 4th encoder 44
Being fixedly mounted in the rotating shaft of the afterbody of the 4th stepper motor 43 is used for the rotational angle of the 4th stepper motor 43 of measurement, and will measurement
Rotational angle host computer is sent to by cable, in addition, the centre of gyration of lower tilt platform 4 and lower tilt arc-shaped table board
Vertical range between 42 is equal to the height of upper angled platform 3 and the revolution of upper angled arc-shaped table board 32 to upper angled platform 3
The vertical range sum of axis CC ', the top center of lower tilt arc-shaped table board 42 is provided with one to be used for and upper angled arc
Bottom centre's connection of table top fixed seat 41 carries out the pin-and-hole of pin joint with pin-and-hole, and this pin-and-hole size is Φ in the embodiment of the present invention
20H7, depth 5mm, but not limited to this；When using, by straight pin 5 by upper angled arc-shaped table board fixed seat 31 with Φ 20H7/
G6 gaps coordinate realizes that centralized positioning is fixed on lower tilt arc-shaped table board 42, and the cooperation of Φ 20H7/g6 gaps ensures that bottom is inclined
The axis of rotation DD ' of sloping platform 4 is vertical in the horizontal plane with the axis of rotation CC ' of upper angled platform 3 at incident neutron beam center
Intersect at O points；The bottom centre of lower tilt arc-shaped table board fixed seat 41 is provided with a connection pin-and-hole, in the embodiment of the present invention
This pin-and-hole size is Φ 20H7, depth 5mm, but not limited to this.
The top of circular base slab 6 is provided with one for being connected use with the bottom centre of lower tilt arc-shaped table board fixed seat 41
Pin-and-hole carries out the pin-and-hole of pin joint, in the embodiment of the present invention this pin-and-hole size be Φ 20H7, depth 5mm, but not limited to this；Use
When, lower tilt arc-shaped table board fixed seat 41 is coordinated with Φ 20H7/g6 gaps by straight pin 5 realizes that centralized positioning is fixed on
On circular base slab 6, Φ 20H7/g6 gaps coordinate the central axis EE ' of guarantee circular base slab 6 and returning for lower tilt platform 4
Shaft axis DD ' is vertically intersected on O points, overlaps with the axis of rotation AA ' of turntable 1；The bottom of circular base slab 6 be provided with for
Realize the centralized positioning with the sample stage of the axle spectrometer of cold neutrons three and fixed positioning cylinder pin-and-hole and screwed hole；When using, circle
Shape gripper shoe 6 is fixed in the sample stage (not shown) of the axle spectrometer of cold neutrons three by setting circle pin and screw, positioning
The central axis EE ' of the straight pin guarantee circular base slab 6 and z of sample stage is to central axes.
Host computer calculates the actual rotation angle of rotary table top 12 according to the rotational angle of the first stepper motor 13 for receiving
Degree, according to the rotational angle of the second stepper motor 23 for receiving actual rising or the slippage of Lifting platform 22 are calculated, according to
The rotational angle of the 3rd stepper motor 33 calculates the actual lateral rotation angle of upper angled arc-shaped table board 32, according to what is received
What the rotational angle of the 4th stepper motor 43 calculated lower tilt arc-shaped table board 42 actually longitudinally rotates angle, and host computer will be calculated
As a result contrasted with setting value, judged rotary table top 12, Lifting platform 22, upper angled arc-shaped table board 32, lower tilt arc
Whether shape table top 42 moves in place, if motion is not in place, controls the first stepper motor 13, the second stepper motor the 23, the 3rd
Stepper motor 33, the 4th stepper motor 43 are rotated further；If motion is in place, the first stepper motor 13, the second stepping are controlled
Motor 23, the 3rd stepper motor 33, the 4th stepper motor 43 stop operating.
In a preferred embodiment, the first rotating mechanism, the second rotating mechanism and the 3rd rotating mechanism can be adopted
Worm and worm gear.
In a preferred embodiment, elevating mechanism can adopt closely-pitched lead screw mechanism.
In a preferred embodiment, straight pin 5 can adopt the cylinder of the high 10mm of Φ 20g6.
Sample based on the axle spectrometer of cold neutrons of the present invention three scatters the method for adjustment of the adjusting apparatus of plane, including following step
Suddenly：
1) installation adjusting device：The sample stage of the axle spectrometer of cold neutrons three provides the θ turntables rotated to central axis around its z
With 2 θ turntables, adjusting apparatus are arranged on θ turntables, detector 7 is arranged on 2 θ turntables, adjusting apparatus and detector
7 z around sample stage rotate to central axis, detector 7 to record the outgoing neutron intensity of sample, and will record result
It is sent to host computer；
2) adjusting apparatus initialization：As shown in Fig. 2 (a), definition incident neutron beam incident in the horizontal directionFor pole axis,
θ turntables are adjusted by host computer and rotates the axis of rotation CC ' and incident neutron beam that cause upper angled platform 3Angle S1=
0, the axis of rotation DD ' of lower tilt platform 4 is perpendicular to incident neutron beam2 θ turntables are adjusted by host computer to rotate so that visiting
Survey device 7 and incident neutron beamAngle S2=0, θ turntables, 2 θ turntables and the rotate counterclockwise of turntable 1 are defined for just；
3) sample is installed：
3.1) sample is placed under experimental temperature, and rotation is fixed to based on the cooperation of Φ 20H7/g6 gaps by specimen holder
The top of platform 1, when fixed, marks some for causing sample center to refer to crystal orientation according to sampleWith the revolution of lower tilt platform 4
Axis DD ' coincidences, due to there is error in fixed sample, refer to crystal orientation after fixingIn the horizontal plane with lower tilt platform
There is misalignment angle δ between 4 axis of rotation DD ', shown in such as Fig. 2 (a)；
3.2) the second stepper motor of PC control 23 is rotated, and then drives Lifting platform 22 to rise or fall so that sample
The center of product and incident neutron beamCenter be in same level；
4) crystal orientation is adjusted
4.1) the θ turntables of PC control 2 rotation make detector 7 rotate to incident neutron beamAngle S2=room temperature
Under reference crystal orientationAngle of scatteringPlace；PC control θ turntable drives circular base slab 6 to rotate, when top is inclined
The axis of rotation CC ' of sloping platform 3 and incident neutron beamAngle S1 In the range of when changing, host computer
Gauss curve fitting is carried out to the neutron intensity of the record of detector 7 and draws angle S at peak intensity1=S0, calculate misalignment angleAs shown in Fig. 2 (b), host computer rotated by control the first stepper motor 13 drive rotary table top 12,
Specimen holder and rotary sample δ so that refer to crystal orientationProjection in the horizontal plane is heavy with the axis of rotation DD ' of lower tilt platform 4
Close, shown in such as Fig. 2 (c), PC control θ turntable drives circular base slab 6 to rotate and causes angleSuch as
Shown in Fig. 2 (d)；
4.2) lattice paprmeter of sample can change with temperature so that reciprocal lattice vector space also can be distorted, and cause experiment
At a temperature of sample crystal orientationAngle of scattering and room temperature under drawThere is difference, PC control θ turntable and 2 θ revolve
Turntable drives respectively circular base slab 6 to rotate the axis of rotation CC ' and incident neutron beam for causing upper angled platform 3Angle S1 Detector 7 and incident neutron beam are caused with driving detector 7 to rotateAngle S2
In the range of with equidirectional and step change rate presses Δ S1：ΔS2=1:2 change；Host computer enters to the neutron intensity that detector 7 is recorded
Row Gauss curve fitting draws the angle at peak intensityAnglePC control θ turntable and 2
The rotation of θ turntables causes respectively angleAngleHost computer according toCalculate
The lattice paprmeter of sample is for used by subsequent experimental under experimental temperature；
4.3) θ turntables and 2 θ turntables are remained stationary as, and the 3rd stepper motor of PC control 33 is rotated and drives top to incline
Tiltedly arc-shaped table board 32 is around axis of rotation CC ' rotations；In rotary course, host computer carries out height to the neutron intensity that detector 7 is recorded
This fitting show that the angle of upper angled arc-shaped table board 32 at peak intensity is sgu；The rotational band of the 3rd stepper motor of PC control 33
Dynamic upper angled arc-shaped table board 32 rotates to angle sgu so thatAxis of rotation in horizontal plane, with lower tilt platform 4
DD ' coincidences, perpendicular to the axis of rotation CC ' of upper angled platform 3, as shown in Figure 3；
5) crystal orientation is adjusted
5.1) host computer adjust 2 θ turntables rotation make detector 7 rotate to incident neutron beamAngle S2=room temperature
Under reference crystal orientationAngle of scatteringPlace, according toWith refer to crystal orientationWith refer to crystal orientationBetween angle α,
Calculate the axis of rotation CC ' and incident neutron beam of upper angled platform 3AngleHost computer control
θ turntables processed and 2 θ turntables drive respectively circular base slab 6 to rotate the axis of rotation CC ' and incidence for causing upper angled platform 3
Neutron beamAngle S1 Detector 7 and incident neutron beam are caused with driving detector 7 to rotate
Angle S2 In the range of with equidirectional and step change rate presses Δ S1：ΔS2=1：2 change, host computer pair
The neutron intensity of the record of detector 7 carries out Gauss curve fitting and draws angle at peak intensityAnglePC control θ turntable and the rotation of 2 θ turntables cause respectively angleAngleHost computer according toCalculate the lattice paprmeter of sample under experimental temperature；
5.2) θ turntables and 2 θ turntables are remained stationary as, and the 4th stepper motor of PC control 43 is rotated and drives bottom to incline
Tiltedly arc-shaped table board 42 is around axis of rotation DD ' rotations；In rotary course, host computer carries out height to the neutron intensity that detector 7 is recorded
This fitting draw lower tilt arc-shaped table board 42 at peak intensity angle be sgl, the rotational band of the 4th stepper motor of PC control 43
Dynamic lower tilt arc-shaped table board 42 rotates to angle sgl so that refer to crystal orientationWith reference to crystal orientationWith incident neutron beamPosition
In same level.
The present invention is applied to any single crystal samples, and detailed retouching is carried out to the method for the present invention with reference to specific embodiment
State：
Sample is with TlCo0.8Ni1.2S2As a example by, lattice parameter under room temperature：α
=β=γ=90 °, incident neutron energy is 14.7meV, draws crystal orientationAngle of scattering be -93.16 °, it is brilliant
ToAngle of scattering be -123.5 °；
1) installation adjusting device：The sample stage of the axle spectrometer of cold neutrons three provides the θ turntables rotated to central axis around its z
With 2 θ turntables, adjusting apparatus are arranged on θ turntables, detector 7 is arranged on 2 θ turntables, adjusting apparatus and detector
7 z around sample stage rotate to central axis, detector 7 to record the outgoing neutron intensity of sample, and will record result
It is sent to host computer；
2) adjusting apparatus initialization：As shown in Fig. 5 (a), definition incident neutron beam incident in the horizontal directionFor pole
Axle, adjusts θ turntables and rotates the axis of rotation CC ' and incident neutron beam that cause upper angled platform 3 by host computerAngle
S1=0, the axis of rotation DD ' of lower tilt platform 4 is perpendicular to incident neutron beamAdjusting the rotation of 2 θ turntables by host computer makes
Obtain detector 7 and incident neutron beamAngle S2=0, θ turntable, 2 θ turntables and turntable 1, rotate counterclockwise is for just；
3) sample is installed：
3.1) sample is placed under experimental temperature, and rotation is fixed to based on the cooperation of Φ 20H7/g6 gaps by specimen holder
The top of platform 1, when fixed, marks some for causing sample center to refer to crystal orientation according to sampleWith the gyroaxis of lower tilt platform 4
Line DD ' coincidences, due to there is error in fixed sample, refer to crystal orientation after fixingIn the horizontal plane with lower tilt platform 4
There is misalignment angle δ between axis of rotation DD ', it is assumed that two refer to crystal orientationWithAngle
For TlCo0.8Ni1.2S2Sample, α=90 °, such as shown in Fig. 5 (a)；
3.2) the second stepper motor of PC control 23 is rotated, and then drives Lifting platform 22 to rise or fall so that sample
The center of product and incident neutron beamCenter be in same level；
The adjustment detailed process that rises or falls of Lifting platform 22 is：Host computer is powered to the second stepper motor 23, and second
The closely-pitched lead screw that stepper motor 23 is rotarily driven in the closely-pitched lead screw mechanism of lifting platform 2 is rotated, and then drives closely-pitched
The serrated nut of lead screw mechanism rises or falls, so as to drive Lifting platform 22, specimen holder and sample to be moved up and down；
The direct measurement rotational angle of second encoder 24 in the rotating shaft of the afterbody of the second stepper motor 23, and be sent to upper
Machine；Host computer obtains actual rising or the slippage of Lifting platform 22, positioning precision by calculating the pitch of closely-pitched lead screw
For ± 3 μm；
4) crystal orientation is adjusted
4.1) the θ turntables of PC control 2 rotation make detector 7 rotate to incident neutron beamAngle S2=room temperature
Under reference crystal orientationAngle of scatteringPlace；PC control θ turntable drives circular base slab 6 to revolve
Turn, when axis of rotation CC ' and the incident neutron beam of upper angled platform 3Angle S1 -66.58°
When changing in the range of~-26.58 °, host computer carries out Gauss curve fitting and draws at peak intensity to the neutron intensity that detector 7 is recorded
Angle S1=S0, calculate misalignment angleAs shown in Fig. 5 (b), host computer is by control the first stepping electricity
Machine 13 is rotated and drives rotary table top 12, specimen holder and rotary sample δ so that refer to crystal orientationProjection in the horizontal plane and bottom
Axis of rotation DD ' the coincidences of tilting table 4, shown in such as Fig. 5 (c), PC control θ turntable drives the rotation of circular base slab 6 to make
Obtain angleAs shown in Fig. 5 (d)；
Adjustment rotary table top 12 rotation detailed process be：The first stepper motor of PC control 13 is rotated, the first stepping
Motor 13 rotarily drives the worm and worm gear motion of turntable 1, the rotary table top 12 for causing turntable 1 and the sample being installed on it
Product frame and sample are around axis of rotation AA ' rotations.The first encoder 14 in the rotating shaft of the afterbody of the first stepper motor 13
Direct measurement corner, through worm and wormwheel 1：180 speed reducing ratio, obtains the actual rotational angle of rotary table top 12, and angle precision is reachable
To ± 0.005 °；
4.2) lattice paprmeter of sample can change with temperature so that reciprocal lattice vector space also can be distorted, and cause experiment
At a temperature of sample crystal orientationAngle of scattering and room temperature under drawThere is difference, PC control θ turntable and 2 θ revolve
Turntable drives respectively circular base slab 6 to rotate the axis of rotation CC ' and incident neutron beam for causing upper angled platform 3Angle S1 - 47.58 °~-- 45.58 ° and the rotation of drive detector 7 are so that detector 7 and incident neutron beam's
Angle S2 With equidirectional and step change rate presses Δ S in the range of -95.16 °~-91.16 °1：ΔS2=1:2
Change；Host computer carries out Gauss curve fitting to the neutron intensity that detector 7 is recorded and draws angle at peak intensity
AnglePC control θ turntable and the rotation of 2 θ turntables cause respectively angleFolder
AngleHost computer according toThe lattice paprmeter of sample under experimental temperature is calculated for used by subsequent experimental；
4.3) θ turntables and 2 θ turntables are remained stationary as, and the 3rd stepper motor of PC control 33 is rotated and drives top to incline
Tiltedly arc-shaped table board 32 is around axis of rotation CC ' rotations；In rotary course, host computer carries out height to the neutron intensity that detector 7 is recorded
This fitting show that the angle of upper angled arc-shaped table board 32 at peak intensity is sgu；The rotational band of the 3rd stepper motor of PC control 33
Dynamic upper angled arc-shaped table board 32 rotates to angle sgu so thatAxis of rotation in horizontal plane, with lower tilt platform 4
DD ' coincidences, perpendicular to the axis of rotation CC ' of upper angled platform 3, as shown in Figure 3；
The detailed process of the rotation of adjustment upper angled arc-shaped table board 32 is：Host computer gives the 3rd stepper motor by cable
33 are powered rotates, and the 3rd stepper motor 33 is powered and drives the worm and worm gear motion of upper angled platform 3, makes upper angled arc
Table top 32 along axis of rotation CC ' rotations, so as to drive lifting platform 2, turntable 1 and specimen holder and sample around CC ' rotations.Peace
The 3rd encoder 34 being mounted in the rotating shaft of the afterbody of the 3rd stepper motor 33 reads the corner of worm screw, according to worm and wormwheel 1：360
Speed reducing ratio obtains the anglec of rotation of upper angled arc-shaped table board 32, angle precision ± 0.001 °；
5) crystal orientation is adjusted
5.1) host computer adjust 2 θ turntables rotation make detector 7 rotate to incident neutron beamAngle S2=room temperature
Under reference crystal orientationAngle of scatteringPlace, according toWith refer to crystal orientationWith refer to crystal orientationBetween angle α,
Calculate the axis of rotation CC ' and incident neutron beam of upper angled platform 3AngleFor
TlCo0.8Ni1.2S2Sample,S1=-151.75 °, PC control θ turntable and 2 θ turntables
Circular base slab 6 is driven to rotate the axis of rotation CC ' and incident neutron beam for causing upper angled platform 3 respectivelyAngle S1 - 152.75 °~-150.75 ° and drive detector 7 to rotate to cause detector 7 and incident neutron beamAngle S2 With equidirectional and step change rate presses Δ S in the range of -125.5 °~-121.5 °1：Δ
S2=1：2 change, and host computer carries out Gauss curve fitting to the neutron intensity that detector 7 is recorded and draws angle at peak intensityAnglePC control θ turntable and the rotation of 2 θ turntables cause respectively angleAngleHost computer according toThe lattice for calculating sample under experimental temperature is normal
Number；
5.2) θ turntables and 2 θ turntables are remained stationary as, and the 4th stepper motor of PC control 43 is rotated and drives bottom to incline
Tiltedly arc-shaped table board 42 is around axis of rotation DD ' rotations；In rotary course, host computer carries out height to the neutron intensity that detector 7 is recorded
This fitting draw lower tilt arc-shaped table board 42 at peak intensity angle be sgl, the rotational band of the 4th stepper motor of PC control 43
Dynamic lower tilt arc-shaped table board 42 rotates to angle sgl so that refer to crystal orientationWith reference to crystal orientationWith incident neutron beamPosition
In same level.
The detailed process of the rotation of adjustment lower tilt arc-shaped table board 42 is：Host computer gives the 4th stepper motor by cable
43 are powered rotates, and drives the worm and worm gear motion of lower tilt platform 4, makes lower tilt arc-shaped table board 42 along axis of rotation
DD ' rotation rotations, so as to drive upper angled platform 3, lifting platform 2, turntable 1 and specimen holder and sample around lower tilt platform 4
Axis of rotation DD ' rotations.The 4th encoder 44 in the rotating shaft of the afterbody of the 4th stepper motor 43 reads turning for worm screw
Angle, according to worm and wormwheel 1：360 speed reducing ratio obtain the anglec of rotation of upper angled arc-shaped table board 32, angle precision ± 0.001 °.
The various embodiments described above are merely to illustrate the present invention, wherein the structure of each part, connected mode and manufacture craft etc. are all
Can be what is be varied from, every equivalents carried out on the basis of technical solution of the present invention and improvement should not be excluded
Outside protection scope of the present invention.
Claims (4)
1. a kind of sample of the axle spectrometer of cold neutrons three scatters the adjusting apparatus of plane, it is characterised in that：It include a turntable, one
Lifting platform, a upper angled platform, a bottom tilting table, four straight pins, a circular base slab and a host computer；
The turntable includes rotary table top fixed seat, rotary table top, the first rotating mechanism, the first stepper motor and the first coding
Device；The top of the rotary table top fixed seat is fixedly connected the rotary table top, the rotation by first rotating mechanism
The top center of table top is provided with one to be used to fix the installing hole of specimen holder；The input connection of first rotating mechanism is described
The output end of the first stepper motor, the first stepper motor rotational band is moved first rotating mechanism and is rotated, and then drives institute
State rotary table top and specimen holder mounted thereto rotates；First encoder is fixedly mounted on first stepping
It is used to measure the rotational angle of first stepper motor in the rotating shaft of motor afterbody, and the rotational angle of measurement is passed through into cable
Line is sent to the host computer；In addition, the bottom centre of the rotary table top fixed seat is additionally provided with a connection pin-and-hole；
The lifting platform includes Lifting platform fixed seat, Lifting platform, elevating mechanism, the second stepper motor and second encoder；
The top of the Lifting platform fixed seat connects the Lifting platform, the input of the elevating mechanism by the elevating mechanism
Connect the output end of second stepper motor, the second stepper motor rotational band is moved the elevating mechanism and moved up and down；Institute
Stating second encoder and being fixedly mounted in the rotating shaft of the second stepper motor afterbody is used to measure second stepper motor
Rotational angle, and the rotational angle of measurement is sent to into the host computer by cable；In addition, the top of the Lifting platform
Center is additionally provided with one for being connected the pin-and-hole that pin joint is carried out with pin-and-hole with the bottom centre of the rotary table top fixed seat；Use
When, the rotary table top fixed seat is fixed on the Lifting platform by the straight pin；The Lifting platform fixed seat
Bottom centre be provided with a connection pin-and-hole；
The upper angled platform include upper angled arc-shaped table board fixed seat, upper angled arc-shaped table board, the second rotating mechanism, the
Three stepper motors and the 3rd encoder；Horizontal arc track, institute are provided with the top of the upper angled arc-shaped table board fixed seat
State upper angled arc-shaped table board bottom and be provided with the arc-shaped protrusions structure matched with the horizontal arc track, the top is inclined
Tiltedly arc-shaped table board by second rotating mechanism installed in the top of the upper angled arc-shaped table board fixed seat, described second
The input of rotating mechanism connects the output end of the 3rd stepper motor, and the 3rd stepper motor is rotated and drives described second
Rotating mechanism is rotated, and makes the upper angled arc-shaped table board along the described horizontal arc of the upper angled arc-shaped table board fixed seat
Track is rotated, and the 3rd encoder is fixedly mounted in the rotating shaft of the 3rd stepper motor afterbody to be used to measure described
The rotational angle of the 3rd stepper motor, and the rotational angle of measurement is sent to into the host computer by cable；In addition, described
One is provided with the top of upper angled arc-shaped table board is carried out for being connected with the Lifting platform fixed seat bottom centre with pin-and-hole
The pin-and-hole of pin joint；When using, the Lifting platform fixed seat is fixed on by the upper angled arc platform by the straight pin
On face；The bottom centre of the upper angled arc-shaped table board fixed seat is provided with a connection pin-and-hole；
The lower tilt platform include lower tilt arc-shaped table board fixed seat, lower tilt arc-shaped table board, the 3rd rotating mechanism, the
Four stepper motors and the 4th encoder；Longitudinal arc track, institute are provided with the top of the lower tilt arc-shaped table board fixed seat
State lower tilt arc-shaped table board bottom and be provided with the arc-shaped protrusions structure matched with longitudinal arc track, the bottom is inclined
Tiltedly arc-shaped table board by the 3rd rotating mechanism installed in the top of the lower tilt arc-shaped table board fixed seat, the described 3rd
The input of rotating mechanism connects the output end of the 4th stepper motor, and the 4th stepper motor is rotated and drives the described 3rd
Rotating mechanism is rotated, and makes the lower tilt arc-shaped table board along described longitudinal arc of the lower tilt arc-shaped table board fixed seat
Track is rotated, and the 4th encoder is fixedly mounted in the rotating shaft of the 4th stepper motor afterbody to be used to measure described
The rotational angle of the 4th stepper motor, and the rotational angle of measurement is sent to into the host computer by cable, in addition, described
Vertical range between the centre of gyration of lower tilt platform and the lower tilt arc-shaped table board is equal to the upper angled platform
Highly with the vertical range sum of the upper angled arc-shaped table board to the axis of rotation of the upper angled platform, the bottom is inclined
Tiltedly the top center of arc-shaped table board is provided with one for being connected use with the bottom centre of the upper angled arc-shaped table board fixed seat
Pin-and-hole carries out the pin-and-hole of pin joint；When using, the upper angled arc-shaped table board fixed seat is fixed on by institute by the straight pin
State on lower tilt arc-shaped table board；The bottom centre of the lower tilt arc-shaped table board fixed seat is provided with a connection pin-and-hole；
One is provided with the top of the circular base slab for being connected with the lower tilt arc-shaped table board fixed seat bottom centre
The pin-and-hole of pin joint is carried out with pin-and-hole；When using, the lower tilt arc-shaped table board fixed seat is fixed on by the straight pin
On the circular base slab；The bottom of the circular base slab is provided with for realizing and the sample stage of the axle spectrometer of cold neutrons three
Centralized positioning and fixed positioning cylinder pin-and-hole and screwed hole；
The host computer turns according to the reality that the rotational angle of first stepper motor for receiving calculates the rotary table top
Dynamic angle, according to the rotational angle of second stepper motor for receiving actually rising or falling for the Lifting platform is calculated
Amount, according to the rotational angle of the 3rd stepper motor actual lateral rotation angle of the upper angled arc-shaped table board is calculated,
Actually longitudinally rotating for the lower tilt arc-shaped table board is calculated according to the rotational angle of the 4th stepper motor for receiving
Angle, judges whether the rotary table top, Lifting platform, upper angled arc-shaped table board, lower tilt arc-shaped table board move in place,
If motion is not in place, first stepper motor, the second stepper motor, the 3rd stepper motor, the 4th stepper motor are controlled
It is rotated further；If motion is in place, first stepper motor, the second stepper motor, the 3rd stepper motor, the 4th step are controlled
Stepper motor stops operating.
2. a kind of sample of the axle spectrometer of cold neutrons three as claimed in claim 1 scatters the adjusting apparatus of plane, it is characterised in that：
First rotating mechanism, the second rotating mechanism and the 3rd rotating mechanism adopt worm and worm gear.
3. a kind of sample of the axle spectrometer of cold neutrons three as claimed in claim 1 or 2 scatters the adjusting apparatus of plane, and its feature exists
In：The elevating mechanism adopts closely-pitched lead screw mechanism.
4. a kind of sample based on the axle spectrometer of cold neutrons three as any one of claims 1 to 3 scatters the adjustment dress of plane
The method of adjustment put, comprises the following steps：
1) installation adjusting device：Adjusting apparatus are arranged on θ turntables, detector is arranged on 2 θ turntables, adjusting apparatus
Rotate to central axis around the z of sample stage with detector；
2) adjusting apparatus initialization：Rotated by host computer adjustment θ turntables and cause the axis of rotation CC ' of upper angled platform and enter
Hit beamletAngle S1=0, the axis of rotation DD ' of lower tilt platform is perpendicular to incident neutron beamAdjusted by host computer
2 θ turntables are rotated and cause detector and incident neutron beamAngle S2=0, define θ turntables, 2 θ turntables and turntable
Rotate counterclockwise is for just；
3) sample is installed：
3.1) sample is placed under experimental temperature, and turntable top is fixed to by specimen holder, when fixed, according to sample mark
So that some of sample center refers to crystal orientationOverlap with the axis of rotation DD ' of lower tilt platform, due to fixed sample
In there is error, it is fixed after refer to crystal orientationThere is the angle of deviation and the axis of rotation DD ' of lower tilt platform between in the horizontal plane
Degree δ；
3.2) stepper motor of PC control second is rotated, and then drives Lifting platform to rise or fall so that the center of sample
With incident neutron beamCenter be in same level；
4) crystal orientation is adjusted
4.1) the θ turntables of PC control 2 rotation make detector rotate to incident neutron beamAngle S2Ginseng under=room temperature
Examine crystal orientationAngle of scatteringPlace；PC control θ turntable drives circular base slab rotation, when returning for upper angled platform
Shaft axis CC ' and incident neutron beamAngle S1 In the range of when changing, host computer is to detector
The neutron intensity of record carries out Gauss curve fitting and draws angle S at peak intensity1=S0, calculate misalignment angle
Host computer is by the first stepper motor rotational band of control dynamic rotary table top, specimen holder and rotary sample δ so that refer to crystal orientation
Projection in horizontal plane overlaps with the axis of rotation DD ' of lower tilt platform, and PC control θ turntable drives circular base slab rotation
Turn to cause angle
4.2) the sample crystal orientation under experimental temperatureAngle of scattering and room temperature under drawThere are difference, the rotation of PC control θ
Turntable and 2 θ turntables drive respectively circular base slab to rotate the axis of rotation CC ' and incident neutron beam for causing upper angled platform
Angle S1 Detector and incident neutron beam are caused with driving detector to rotateAngle S2 In the range of with equidirectional and step change rate presses Δ S1：ΔS2=1:2 change；Host computer is recorded to detector
Neutron intensity carry out Gauss curve fitting and draw angle at peak intensityAngleHost computer control
θ turntables processed and the rotation of 2 θ turntables cause respectively angleAngleHost computer according toCalculate the lattice paprmeter of sample under experimental temperature；
4.3) θ turntables and 2 θ turntables are remained stationary as, and the stepper motor of PC control the 3rd is rotated and drives upper angled arc
Table top is around axis of rotation CC ' rotations；In rotary course, host computer carries out Gauss curve fitting and draws to the neutron intensity that detector is recorded
The angle of upper angled arc-shaped table board is sgu at peak intensity；The stepper motor of PC control the 3rd is rotated and drives upper angled arc
Table top rotates to angle sgu so thatIn horizontal plane, overlap with the axis of rotation DD ' of lower tilt platform, perpendicular to top
The axis of rotation CC ' of tilting table；
5) crystal orientation is adjusted
5.1) host computer adjust 2 θ turntables rotation make detector rotate to incident neutron beamAngle S2Ginseng under=room temperature
Examine crystal orientationAngle of scatteringPlace, according toWith refer to crystal orientationWith refer to crystal orientationBetween angle α, calculate
The axis of rotation CC ' of portion's tilting table and incident neutron beamAnglePC control θ turntable and
2 θ turntables drive respectively circular base slab to rotate the axis of rotation CC ' and incident neutron beam for causing upper angled platformAngle
S1 Detector and incident neutron beam are caused with driving detector to rotateAngle S2 In the range of with equidirectional and step change rate presses Δ S1：ΔS2=1：2 change, and host computer is recorded to detector
Neutron intensity carry out Gauss curve fitting and draw angle at peak intensityAngleHost computer
Control θ turntables and the rotation of 2 θ turntables cause respectively angleAngleHost computer root
According toCalculate the lattice paprmeter of sample under experimental temperature；
5.2) θ turntables and 2 θ turntables are remained stationary as, and the stepper motor of PC control the 4th is rotated and drives lower tilt arc
Table top is around axis of rotation DD ' rotations；In rotary course, host computer carries out Gauss curve fitting and draws to the neutron intensity that detector is recorded
The angle of lower tilt arc-shaped table board is sgl at peak intensity, and the stepper motor of PC control the 4th is rotated and drives lower tilt arc
Table top rotates to angle sgl so that refer to crystal orientationWith reference to crystal orientationWith incident neutron beamIt is located in the same horizontal plane.
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| CN105572156B (en) * | 2016-01-29 | 2018-04-06 | 吉林大学 | A kind of two axle precision movement platforms for X-ray diffractometer |
| CN107748446A (en) * | 2017-10-27 | 2018-03-02 | 东莞东聚电子电讯制品有限公司 | A kind of active alignment equipment of three cameras module |
| CN110082376B (en) * | 2019-05-20 | 2024-01-30 | 中国人民大学 | Double-row monocrystalline neutron analyzer unit |
| CN110333220B (en) * | 2019-07-15 | 2021-01-12 | 天津大学 | Identification method and device for crystal orientation of phosphorus alkene and electronic equipment |
| CN110756995A (en) * | 2019-10-15 | 2020-02-07 | 中国船舶重工集团公司第七一六研究所 | Multi-degree-of-freedom adjustment laser arc composite welding gun structure |
| CN112093520B (en) * | 2020-09-24 | 2023-02-03 | 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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