CN106772548A - Neutron (-detecting) phosphor position sensitive detector test system and method - Google Patents
Neutron (-detecting) phosphor position sensitive detector test system and method Download PDFInfo
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- CN106772548A CN106772548A CN201710073862.0A CN201710073862A CN106772548A CN 106772548 A CN106772548 A CN 106772548A CN 201710073862 A CN201710073862 A CN 201710073862A CN 106772548 A CN106772548 A CN 106772548A
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Abstract
The invention discloses a kind of neutron (-detecting) phosphor position sensitive detector test system, including light-pulse generator analogue means, optical process modules, mechanical scanning platform and data acquisition module, the light-pulse generator analogue means exports pulsed optical signals, the optical process modules are decayed the pulsed optical signals, polarization, after expanding treatment, collimation is carried out by an optical fiber collimator to process and be fixed on the mechanical scanning platform, and the pulsed optical signals is radiated in the test point of the ripple shifting fiber of neutron (-detecting) phosphor position sensitive detector to be measured, pulsed optical signals are by the ripple shifting fiber output photon to the tested photomultiplier for having multiplexer channel, the data acquisition module obtains the measured signal of the tested photomultiplier.The light source for exciting scintillator to send by pul sed laser simulation neutron of the invention, obtains the performance parameter of each passage from ripple shifting fiber to photomultiplier, realizes the detection and test of the nuclear detector in without radioactive source environment.
Description
Technical field
The invention belongs to nuclear physics detecting field.The present invention is a kind of 2D neutron (-detecting) phosphors position sensitive detector test system,
Hot spot more particularly to using laser beam simulation neutron on scintillation screen, each passage to flashing the quick nuclear detector of position enters
Row measurement test, without radioactive source or other extra detector subsidiary positions etc. with reference to information.
Background technology
Neutron detector based on New Scintillators and photoelectricity reading out structure quickly grew in recent years, especially with doping
Scintillation detector is representative, but neutron (-detecting) phosphor position sensitive detector employs photomultiplier mostly in detection-reading link
Deng amplifying device, due to odjective causes such as production technologies, the performance parameter of its each read-out channel is difficult to be consistent, and causes to dodge
The performance parameter of bright body position sensitive detector is difficult to obtain preferably control in batch production, therefore in 2D quick nuclear detector
, it is necessary to carry out detailed survey for the key parameter of detection system each passage during designing, develop, test and manufacturing
Amount.
2D neutron (-detecting) phosphors position sensitive detector is main by scintillation screen, ripple shifting fiber, photomultiplier and electronics module
Composition, mixes the scintillator absorbing wavelength of material close to 400, and neutron produces nuclear reaction, reaction is produced and particle with scintillator
Photoelectric effect is excited in ZnS scintillators, the photon of generation can be separated in the middle part of scintillator dielectric layer to be penetrated and enter in interlayer
Ripple shifting fiber, is subsequently converted to the photon of longer wavelength, by certain passage of Optical Fiber Transmission to multi-anode photomultiplier, photon
Electric impulse signal is produced after opto-electronic conversion and gain amplifier is obtained, the response signal on each read-out channel is finally obtained by data
System record is taken, the information such as position and the time of neutron example are given, the detection of neutron is completed.
Current most domestic 2D neutron (-detecting) phosphor position sensitive detectors do not have special test system, to detector in itself
Detection using means such as radioactive source/ultra rays, uses other detector subsidiaries flicker quick nuclear detector of position to be measured mostly
Performance parameter.There is test system complexity, inefficiency in these methods.And radioactive source related management regulation is strict, much
Also there is quality and the defect such as be difficult to control in the trigger source of experiment, it is difficult to meet the detection flicker quick nuclear detector of position well
Performance requirement.For example, Special experimental detection needs site layout project, detecting system has the uncertainty of long-term, once measurement
Demand and environment are varied from, and experiment just will almost be recalibrated, therefore time-consuming more, and versatility is poor, and different realities
Test between environment and be difficult to across comparison.Furthermore, radioactive source scale except by radioactive source related management regulation strictly limitation in addition to,
Often there is activity/triggering the defect such as to be difficult to control to, it is difficult to accomplish good matching with measurement demand.Above-mentioned these factors, make
Traditional detecting system is obtained to be difficult to carry out quality of production control to scintillator detector well.
Therefore it is badly in need of a kind of neutron (-detecting) phosphor position sensitive detector test system and method for solving the above problems.
The content of the invention
It is an object of the invention to provide a kind of neutron (-detecting) phosphor position sensitive detector test system, more particularly to using laser
Beam simulates hot spot of the neutron on scintillation screen, and each passage to flashing the quick nuclear detector of position measures test, without
Radioactive source or other extra detector subsidiary positions etc. are wanted with reference to information.
It is upper purposeful in order to realize, the invention discloses a kind of neutron (-detecting) phosphor position sensitive detector test system, including arteries and veins
Light source simulating device, optical process modules, mechanical scanning platform and data acquisition module are rushed, the light-pulse generator analogue means is defeated
Go out pulsed optical signals, the pulsed optical signals are decayed, are polarized by the optical process modules, expand treatment after, by one
Optical fiber collimator carries out collimation and processes and be fixed on the mechanical scanning platform, and it is to be measured to be radiated at the pulsed optical signals
Neutron (-detecting) phosphor position sensitive detector ripple shifting fiber test point on, pulsed optical signals pass through the ripple shifting fiber output photon
To the tested photomultiplier for having multiplexer channel, the quilt after the data acquisition module acquisition tested photomultiplier amplification
Survey signal.
Scintillator neutron detector inconsistency derives from four processes, is respectively scintillation screen, fiber array, multianode light
Electric multiplier tube and electronics module.Wherein the gain of electronics module can be adjusted, therefore batch production requirements are whole for detector
Machine provides first three link has comparative gain profiles, and reference is provided for electron compensation.In addition scintillation screen is not
Uniformity is relative to be determined, and actually also inconvenient using neutron measurement.Therefore producer's parameter is typically directly used to scintillation screen,
Only simply confirmed in the method for sampling Detection, assessment fluctuation range substantially.And the efficiency of transmission of fiber array and sun more
The gain inconsistency of pole photomultiplier is then difficult to control to and is the target of detecting system labor more significantly.In view of
To the social condition strict all the more using management of radioactive source, the present invention is by setting up a set of test system based on pulse laser
System, laser signal is directly output on ripple shifting fiber, i.e., excite the light source that scintillator sends by pul sed laser simulation neutron, can
To obtain the performance parameter of each passage from ripple shifting fiber to photomultiplier, realize in without radioactive source environment, nuclear detector
Detection and test, avoid radioactive source it is strict laws and regulations on the management limitation.Because LASER Light Source is ripe industrial products, do not put
Penetrate the limitation of source control regulation.Pulsed laser output stabilization, very easily can accurately modulate the quick detection of neutron scintillator position
Device various parameters (power/pulse width/frequency etc.), coordinate optical module to substitute hot spot of the neutron on scintillation screen, and fit
Requirement with different measuring environments.Cooperative mechanical scanning platform realizes the exact position scanning of target area, you can efficiently quick
The photoelectric cell to many read-out channels carry out careful measurement, either produce in enormous quantities or small-sized research and development test in have
Flexible adaptability and it is widely applied prospect.
It is preferred that the neutron (-detecting) phosphor position sensitive detector test system also includes referring to photomultiplier, the optics
Processing module also includes optical splitter, and the pulsed optical signals are decayed, polarized, expanded by the optical process modules, light splitting
Treatment is fixed to the machine with power output identical two-way pulsed optical signals, all the way pulsed optical signals by an optical fiber collimator
On tool scanning platform, and the pulsed optical signals are made to expose in the test point, pulsed optical signals described in another road pass through one
The reference photomultiplier is exposed to after the treatment of optical fiber collimator collimation, the reference photomultiplier is according to the pulsed light
Signal output reference signal, the data acquisition module also obtains the reference signal of the reference photomultiplier output.
It is preferred that the mechanical scanning platform includes fixed station and mechanical arm, the fixed station fixes the fiber optic collimator
Device, the mechanical arm drives the fixed station to be moved up so that the pulsed optical signals expose to institute in orthogonal two side
State in test point.
It is preferred that be changed into the signal of acquisition after electric signal by the data acquisition module and being amplified, filtering shaping, discriminate
Not, host computer is uploaded to after triggering, counting treatment, and obtains, records the response of correspondence read-out channel.
It is preferred that the neutron (-detecting) phosphor position sensitive detector test system also includes control module, the control module point
It is not connected with the mechanical scanning platform, light-pulse generator analogue means and data acquisition module, and coordinates, controls the machinery
The action of scanning platform, light-pulse generator analogue means and data acquisition module.
It is preferred that the optical fiber for transmitting the pulsed optical signals is multimode fibre, and the optical process modules and the light
Multimode fibre between fine collimater is installed on a fibre-optical bending and disappears on die device, and the fibre-optical bending disappears die device including annular
Inner disc external disk of the inner disc on mould is surrounded on around mould, with certain spacing around mould, the external disk is opened on mould
Through hole is provided with, the multimode fibre is wound in the inner disc and is wound in the external disk around mould through the through hole after mould
On, so as to the multimode fibre is formed and is wound in minor radius coil section of the inner disc on mould and is wound in the external disk
Around the large radius coil section of mould.The method that this programme is coiled using hyperbolicity, using multimode fibre as transmission medium, according to
Two kinds of different radiuses are coiled it in advance.Because the decay radius of higher mode is more than basic mode, minor radius coil section can
Effectively decayed with the higher mode composition that will be coupled into advance into optical fiber, filtered out the low order to large radius bend-insensitive
Mould.The large radius coil section of another relatively large radius eliminates the bending transmission mould that a upper link may be excited.Under both coordinate,
It is final to realize multimode fibre to the suppression of higher mode and stabilization output.Furthermore, the invention enables by the light letter after the mould treatment that disappears
Number, it is always consistent in diverse location optical output power.Under both minor radius coil section and large radius coil section coordinate,
It is final to realize multimode fibre to the suppression of higher mode and stabilization output so that the optical signal after the mould treatment that disappears, in different positions
Put, even if optical fiber has slight curvature, optical output power is always consistent.
The invention also discloses a kind of neutron (-detecting) phosphor position sensitive detector method of testing, the arteries and veins of stabilization is exported using laser
Pulsed light signal, the pulsed optical signals are decayed, are polarized, being expanded, after collimation treatment fixation expose to neutron to be measured and dodge
In the test point of the ripple shifting fiber of bright body position sensitive detector, pulsed optical signals are by the ripple shifting fiber output photon to there is multichannel
The tested photomultiplier of passage, obtains the measured signal of the tested photomultiplier.
By setting up a set of test system based on pulse laser, laser signal is directly output to ripple shifting fiber to the present invention
On, instead of the scintillator light source of detector, the performance parameter of each passage from ripple shifting fiber to photomultiplier can be obtained, it is real
Now without in radioactive source environment, the strict laws and regulations on the management limitation of radioactive source is avoided in the detection and test of nuclear detector.Due to laser
Light source is ripe industrial products, is not limited by radioactive source laws and regulations on the management.Pulsed laser output stabilization, can be very easily smart
Neutron (-detecting) phosphor position sensitive detector various parameters (power/pulse width/frequency etc.) are really modulated, coordinates optical module to substitute
Hot spot of the neutron on scintillation screen, and it is adapted to the requirement of different measuring environments.The mechanical arm of cooperative mechanical scanning platform realizes mesh
Mark the exact position scanning in region, you can efficiently the photoelectric cell quickly to many read-out channels carries out careful measurement, either
There is flexible adaptability in production in enormous quantities or small-sized research and development test and be widely applied prospect.
It is preferred that the pulsed optical signals are carried out into collimation before processing also carries out light-splitting processing with power output identical two
Road pulsed optical signals, all the way pulsed optical signals by collimation treatment after expose in the test point, pulsed light described in another road
Signal by exposing to one after collimation treatment with reference on photomultiplier, according to the pulsed light believe by the reference photomultiplier
Number output reference signal, obtains the reference signal.
It is preferred that the signal of acquisition is changed into after electric signal and being amplified, being filtered shaping, examination, triggering, counting treatment
After upload to host computer, and obtain, record the response of correspondence read-out channel.
It is preferred that the optical fiber for transmitting the pulsed optical signals is multimode fibre, the pulsed optical signals are carried out at collimation
The mould that also carries out disappearing before reason is processed, and is included the step of the mould that disappears is processed；The multimode fibre is divided into connected first half and later half
Part, is wound the first coil section of an annular, by the multimode fibre by the first half bending of the multimode fibre
First half bending be wound the second coil section of an annular, the radius of second coil section is more than described first
The radius of coil section, so that second coil section is large radius coil section, first coil section is minor radius
Coil section, after pulsed optical signals are coupled into the multimode fibre, believes through the minor radius coil section decay pulsed light
Higher mode composition in number is simultaneously delivered to large radius coil section after exciting bending transmission mould, by the large radius coiled portion
Divide the filtering bending transmission mould to form the pulsed optical signals after bending the mould that disappears.The method that this programme is coiled using hyperbolicity,
Using multimode fibre as transmission medium, it is coiled in advance according to two kinds of different radiuses.Due to the decay half of higher mode
Footpath is more than basic mode, and minor radius coil section can will be coupled into effectively being decayed into the higher mode composition of optical fiber in advance, mistake
Leach the low order mode to large radius bend-insensitive.The large radius coil section of another relatively large radius eliminates a upper link may
The bending transmission mould for exciting.Under both coordinate, finally realize multimode fibre to the suppression of higher mode and stabilization output.Furthermore, this
Invention is caused by the optical signal after the mould treatment that disappears, always consistent in diverse location optical output power.
Brief description of the drawings
Fig. 1 is the structural representation in neutron (-detecting) phosphor position sensitive detector test system first embodiment of the present invention.
Fig. 2 is the structural representation in neutron (-detecting) phosphor position sensitive detector test system second embodiment of the present invention.
Fig. 3 is that fibre-optical bending of the present invention disappears the structural representation of die device.
Fig. 4 is that fibre-optical bending of the present invention disappears the structural representation of another angle of die device.
Specific embodiment
To describe technology contents of the invention, structural feature, the objects and the effects in detail, below in conjunction with implementation method
And coordinate accompanying drawing to be explained in detail.
With reference to Fig. 1, the invention discloses a kind of neutron (-detecting) phosphor position sensitive detector test system 200, including light-pulse generator
Analogue means 31, optical process modules 32, mechanical scanning platform 33 and data acquisition module 34, the light-pulse generator analogue means
31 output pulsed optical signals, the pulsed optical signals are decayed, are polarized by the optical process modules 32, expand treatment after,
Collimation is carried out by an optical fiber collimator 321 to process and be fixed on the mechanical scanning platform 33, and believe the pulsed light
Number it is radiated in the test point of the ripple shifting fiber of neutron (-detecting) phosphor position sensitive detector 35 to be measured, pulsed optical signals pass through the ripple
To the tested photomultiplier for having multiplexer channel, the data acquisition module 34 obtains the tested photoelectricity to shifting fiber output photon
The measured signal of multiplier tube.Wherein, the light source of light-pulse generator analogue means 31 uses semiconductor laser, and its power output is
120mW, in addition, during actual neutron detection, the number of photons of scintillator capture only has between 8000 to 12000, and power is very low, uncomfortable
Close the measurement in the case of amplifying without electronics.So the power output of laser can be heightened suitably, to force down background light leak
With for different test occasions provides the output of suitable light intensity, after overdamping, polarizing, expanding, collimate etc. and to process, by laser work(
Rate stabilization suitably responds interval in element under test, and is accurately positioned on expectation irradiation position.Wherein, in order to photomultiplier transit
Manage each passage to be demarcated, the optical fiber for exporting pulsed optical signals need to be fixed on mechanical scanning platform 33, so that DLT
The relevant position of the different passages correspondence ripple shifting fiber plane of the tested photomultiplier in road, to reach the output facula in test
The requirement of the relevant position of a certain passage is accurately directed at, so as to be scanned to whole ripple shifting fiber plane, ripple shifting fiber area
About 150mm × 250mm.
During work, the pulsed optical signals of stabilization are exported using the laser of light-pulse generator analogue means 31, by the pulse
Optical signal is decayed, is polarized, being expanded, collimation fixed ripple shifting for exposing to neutron (-detecting) phosphor position sensitive detector to be measured after processing
In the test point of optical fiber, pulsed optical signals are by the ripple shifting fiber output photon to the tested photomultiplier transit for having multiplexer channel
Pipe, obtains the measured signal of the tested photomultiplier.
Wherein, the mechanical scanning platform 33 includes fixed station and mechanical arm, and the fixed station fixes the fiber optic collimator
Device 321, the mechanical arm drives the fixed station to be moved up in orthogonal two side so that the pulsed optical signals irradiate
On to the test point.
Wherein, be changed into after electric signal for the measured signal of acquisition and be amplified, be filtered into by the data acquisition module 34
Host computer (not shown) is uploaded to after shape, examination, triggering, counting treatment, and obtains, record the sound of correspondence read-out channel
Should.
With continued reference to Fig. 1, the neutron (-detecting) phosphor position sensitive detector test system 200 also includes control module 36, described
Control module 36 is connected with the mechanical scanning platform 33 and light-pulse generator analogue means 31 and data acquisition module 34 respectively,
And coordinate, control the action of the mechanical scanning platform 32, light-pulse generator analogue means 31 and data acquisition module 34.Control mould
Block 36 realizes the operation scheduling of system, and the measurement of each read-out channel is scanned to be automatically performed.In scanning process, control module
36 work for coordinating both according to the status signal of mechanical scanning platform 32 and light-pulse generator analogue means 31.Measured from one
During point moves to next measurement point, the signal in place of mechanical scanning platform 32 is not provided with, and control module 36 closes arteries and veins
The laser for rushing light source simulating device 31 enables signal, stop pulse output.After the signal in place of mechanical scanning platform 32 is set,
The motion that control module 36 closes mechanical scanning platform 32 enables signal, and locked output optical fibre collimater 321 is opened laser and enabled
Signal.
Preferably, with reference to Fig. 3 and Fig. 4, transmits the optical fiber of the pulsed optical signals for multimode fibre, and the optical treatment
Multimode fibre between module 32 and the optical fiber collimator 321 is installed on a fibre-optical bending and disappears on die device 100, the optical fiber
Bending disappears, and to include that the inner disc of annular is surrounded on the inner disc around mould 11, with certain spacing outer on mould 11 for die device 100
Coiling mould 12 and multimode fibre 15, the external disk offer through hole 13 on mould 12, and the part of the multimode fibre 15 is twined
It is around in the inner disc and is wound in the external disk on mould 12, so that described through the through hole 13 around another part after mould 11
Multimode fibre 15 forms and is wound in minor radius coil section of the inner disc on mould 11 and is wound in the external disk around mould
12 large radius coil section.Wherein, due to the core diameter very little of optical fiber, the light distribution of laser beam is in small range scale
Interior to there is fine fluctuating, the slight wobble that external shock causes is likely to cause the light composition being fed in optical fiber unstable,
Core diameter/external diameter is used in the present embodiment for 62.5 μm/125 μm of multimode fibre.Because the decay radius of higher mode is more than basic mode,
Minor radius coil section can will be coupled into effectively being decayed into the higher mode composition of optical fiber in advance, filter out to large radius
The low order mode of bend-insensitive.Another large radius coil section eliminates the bending transmission mould that a upper link may be excited.Both
Under cooperation, finally realize multimode fibre 15 to the suppression of higher mode and stabilization output.Multimode fibre 15 by after coiling, compared with high order
Totally, the light intensity of output tends towards stability mode attenuation, no matter subsequently how to place the outer section part of multimode fibre, and output intensity does not almost have
Change.
Wherein, in this specific embodiment inner disc around a diameter of 82.5mm of mould 11, the coiling of multimode fibre 15 7 is enclosed；External disk
Around a diameter of 97.5mm of mould 12, the coiling of multimode fibre 15 6 is enclosed.
With continued reference to Fig. 3 and Fig. 4, the multi-mode optical processing module 100 is also included located at the inner disc in mould 11
Centered cylinder 10 and the fixation centered cylinder 10, inner disc around mould 11 and external disk around mould 12 base 17.
With reference to Fig. 3, the optical process modules 100 also include being formed at multiple optical fiber of the external disk around the outside of mould 12
Fixed strip 14.
To sum up, 15 points of a multimode fibre is connected first half and latter half by the present invention, by the multimode fibre
15 first half bending is wound the first coil section of an annular, and the latter half bending of the multimode fibre 15 is twined
Around the second coil section for forming an annular, the radius of second coil section is more than the radius of first coil section,
So that second coil section is large radius coil section, first coil section is minor radius coil section, pulsed light
Signal is coupled into after the multimode fibre 15 and sequentially passes through the minor radius coil section and large radius coil section and carry out the mould that disappears
Treatment.
Wherein, the pulsed optical signals are carried out bending concretely comprising the following steps for the mould that disappears：Pulsed optical signals are coupled into described many
After mode fiber 15, higher mode composition in the pulsed optical signals of decaying through the minor radius coil section simultaneously excites bending to transmit
Large radius coil section is delivered to after mould, transmits mould to form bending by the large radius coil section filtering bending
Disappear the pulsed optical signals after mould.
Preferably, second coil section is curved around in outside first coil section with a determining deviation.
With reference to Fig. 2, different from above-mentioned first embodiment, in this embodiment, the neutron (-detecting) phosphor position sensitive detector is surveyed
Test system 200a includes light-pulse generator analogue means 31, optical process modules 32, mechanical scanning platform 33, data acquisition module
34th, optical splitter 37 and reference photomultiplier 38, the light-pulse generator analogue means 31 export pulsed optical signals, the optical splitter
The 37 1 termination optical process modules 32 and pulsed optical signals by decaying, polarize, expand, after light-splitting processing are carried out at light splitting
Manage to export two-way power identical two-way pulsed optical signals respectively to optical fiber collimator described in two 321, fiber optic collimator described in
Device 321 is by fixation on the mechanical scanning platform 33, and the pulsed optical signals are radiated at the ripple shifting fiber of detector to be measured 35
Test point on, pulsed optical signals are by the ripple shifting fiber output photon to the tested photomultiplier for having multiplexer channel, institute
State the measured signal that data acquisition module 34 obtains the tested photomultiplier.After another optical fiber collimator 321 is processed
Pulsed optical signals expose to the reference photomultiplier 38, the reference photomultiplier 38 is according to the pulsed optical signals
Output reference signal, the data acquisition module 34 obtains the reference signal of the output of reference photomultiplier 38 and treats probing
Survey the measured signal of the tested photomultiplier output of device 35.Wherein, the optical splitter 37 is 1:1 optical splitter.Wherein, DLT
The relevant position of the different passages correspondence ripple shifting fiber plane of the tested photomultiplier in road, it is desirable to the output facula essence in test
Really it is directed at the relevant position of a certain passage.Ripple shifting fiber area is about 150mm × 250mm, and the optical fiber for connecting collimater 321 exists
During scanning motion, the response amplitude of several tested points meets the gain of its optical fiber and photomultiplier, the anti-light for pushing away acquisition
Power output is compared with reference to photomultiplier 38, it is ensured that test effect is reached in each test point.
Wherein, the data acquisition module 34 is put after the measured signal of acquisition and reference signal are changed into electric signal
Greatly, host computer (not shown) is uploaded to after filtering shaping, examination, triggering, counting treatment, and is obtained, is recorded correspondence reading
Go out the response of passage.
Preferably, it is identical with first embodiment with continued reference to Fig. 2, in the present embodiment, transmit the pulsed optical signals
Optical fiber is that the multimode fibre between multimode fibre, and the optical process modules 32 and the optical fiber collimator 321 is installed on one
Fibre-optical bending disappears on die device 100, and the fibre-optical bending die device 100 that disappears includes the inner disc of annular around mould 11, between certain
Away from external disk of the inner disc on mould 11 is surrounded on around mould 12 and multimode fibre 15, the external disk is offered on mould 12
Through hole 13, the part of the multimode fibre 15 is wound in inner disc another part after mould 11 and is wound through the through hole 13
In the external disk on mould 12, so that the multimode fibre 15 is formed is wound in minor radius disk of the inner disc on mould 11
Around part and be wound in large radius coil section of the external disk around mould 12.
During work, the pulsed optical signals of stabilization are exported using the laser of light-pulse generator analogue means 31, by the pulse
Optical signal is decayed, is polarized, being expanded, light splitting, the mould that disappears treatment after power output identical two-way pulsed optical signals, all the way pulse
Optical signal is exposed in the test point by after collimation treatment, and pulsed optical signals are by the ripple shifting fiber output photon to having
The tested photomultiplier of multiplexer channel, obtains the measured signal of the tested photomultiplier.Pulsed light letter described in another road
Number by exposing to one with reference on photomultiplier after collimation treatment, the reference photomultiplier is according to the pulsed optical signals
Output reference signal, obtains the reference signal.
Optical process modules cooperation optical module of the present invention can well modulate the pulsed light that intensity is properly measured
Signal output, and the various trigger modes for realizing such as being used for the single photon output for demarcating photomultiplier energy calibration can be extended
Formula, either has flexible adaptability and is widely applied prospect in production in enormous quantities or small-sized research and development test.And carry
Supply a kind of not needing the references such as other extra detector subsidiary positions when can measure the flicker quick nuclear detector of position
The neutron (-detecting) phosphor position sensitive detector test system of information.
Above disclosed is only the preferred embodiments of the present invention, can not limit the right of the present invention with this certainly
Scope, therefore the equivalent variations made according to scope of the present invention patent, still belong to the scope that the present invention is covered.
Claims (10)
1. a kind of neutron (-detecting) phosphor position sensitive detector test system, it is characterised in that：At light-pulse generator analogue means, optics
Reason module, mechanical scanning platform and data acquisition module, the light-pulse generator analogue means export pulsed optical signals, the optics
The pulsed optical signals are decayed, are polarized by processing module, expand treatment after, collimation treatment is carried out by an optical fiber collimator
And be fixed on the mechanical scanning platform, and the pulsed optical signals is radiated at neutron (-detecting) phosphor position sensitive detector to be measured
Ripple shifting fiber test point on, pulsed optical signals are by the ripple shifting fiber output photon to the tested photoelectricity for having multiplexer channel
Multiplier tube, the data acquisition module obtains the measured signal after the tested photomultiplier amplifies.
2. neutron (-detecting) phosphor position sensitive detector test system as claimed in claim 1, it is characterised in that：Also include referring to photoelectricity
Multiplier tube, the optical process modules also include optical splitter, the optical process modules are decayed the pulsed optical signals,
Polarize, expand, light-splitting processing with power output identical two-way pulsed optical signals, pulsed optical signals pass through a fiber optic collimator all the way
Device is fixed on the mechanical scanning platform, and the pulsed optical signals is exposed in the test point, arteries and veins described in another road
Pulsed light signal after optical fiber collimator collimation treatment by exposing to the reference photomultiplier, the reference photomultiplier
Reference signal is exported according to the pulsed optical signals, the data acquisition module also obtains the reference photomultiplier output
Reference signal.
3. neutron (-detecting) phosphor position sensitive detector test system as claimed in claim 1, it is characterised in that：The mechanical scanning is put down
Platform includes fixed station and mechanical arm, and the fixed station fixes the optical fiber collimator, and the mechanical arm drives the fixed station to exist
Orthogonal two side moves up so that the pulsed optical signals are exposed in the test point.
4. the neutron (-detecting) phosphor position sensitive detector test system as described in claim 1,2, it is characterised in that：The data acquisition
Module the signal of acquisition is changed into after electric signal be amplified, filter shaping, examination, triggering, counting treatment after upload to
Bit machine, and obtain, record the response of correspondence read-out channel.
5. neutron (-detecting) phosphor position sensitive detector test system as claimed in claim 4, it is characterised in that：Also include control mould
Block, the control module is connected with the mechanical scanning platform, light-pulse generator analogue means and data acquisition module respectively, and
Coordinate, control the action of the mechanical scanning platform, light-pulse generator analogue means and data acquisition module.
6. neutron (-detecting) phosphor position sensitive detector test system as claimed in claim 1, it is characterised in that：Transmit the pulsed light
The optical fiber of signal is installed on one for the multimode fibre between multimode fibre, and the optical process modules and the optical fiber collimator
Fibre-optical bending disappears on die device, the fibre-optical bending disappear die device include annular inner disc be surrounded on around mould, with certain spacing
Around mould, the external disk offers through hole to external disk of the inner disc on mould on mould, and the multimode fibre is wound in institute
State inner disc and be wound in the external disk on mould through the through hole after mould, so that the multimode fibre is formed is wound in institute
State minor radius coil section of the inner disc on mould and be wound in large radius coil section of the external disk around mould.
7. a kind of neutron (-detecting) phosphor position sensitive detector method of testing, it is characterised in that：The pulsed light of stabilization is exported using laser
Signal, the pulsed optical signals are decayed, are polarized, being expanded, collimation treatment after, fixation expose to neutron (-detecting) phosphor to be measured
In the test point of the ripple shifting fiber of position sensitive detector, pulsed optical signals are by the ripple shifting fiber output photon to there is multiplexer channel
Tested photomultiplier, obtain the measured signal of the tested photomultiplier.
8. neutron (-detecting) phosphor position sensitive detector method of testing as claimed in claim 7, it is characterised in that：By pulsed light letter
Number carrying out collimation before processing also carries out light-splitting processing with power output identical two-way pulsed optical signals, all the way pulsed optical signals warp
Exposed in the test point after crossing collimation treatment, pulsed optical signals described in another road after collimation treatment by exposing to a reference
On photomultiplier, the reference photomultiplier exports reference signal according to the pulsed optical signals, obtains described with reference to letter
Number.
9. the neutron (-detecting) phosphor position sensitive detector method of testing as described in claim 7,8, it is characterised in that：The signal that will be obtained
It is changed into after electric signal and is amplified, filters and upload to after shaping, examination, triggering, counting treatment host computer, and obtain,
The response of record correspondence read-out channel.
10. neutron (-detecting) phosphor position sensitive detector method of testing as claimed in claim 7, it is characterised in that：Transmit the pulse
The optical fiber of optical signal is multimode fibre, and the pulsed optical signals are carried out into collimation before processing also carries out the mould treatment that disappears, the mould that disappears treatment
The step of include；The multimode fibre is divided into connected first half and latter half, by the first half of the multimode fibre
Divide bending to be wound the first coil section of an annular, the first half bending of the multimode fibre is wound an annular
The second coil section, the radius of second coil section more than first coil section radius so that described second
Coil section is large radius coil section, and first coil section is minor radius coil section, and pulsed optical signals are coupled into institute
After stating multimode fibre, higher mode composition in the pulsed optical signals of decaying through the minor radius coil section simultaneously excites bending to pass
Large radius coil section is delivered to after defeated mould, curved to be formed by the large radius coil section filtering bending transmission mould
Song disappears the pulsed optical signals after mould.
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