CN207965166U - The antiuniverse ray pured germanium crystal spectrometer of anti-Compton - Google Patents
The antiuniverse ray pured germanium crystal spectrometer of anti-Compton Download PDFInfo
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- CN207965166U CN207965166U CN201820315274.3U CN201820315274U CN207965166U CN 207965166 U CN207965166 U CN 207965166U CN 201820315274 U CN201820315274 U CN 201820315274U CN 207965166 U CN207965166 U CN 207965166U
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- 239000013078 crystal Substances 0.000 title claims abstract description 26
- 229910052732 germanium Inorganic materials 0.000 title claims abstract description 26
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000009434 installation Methods 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 39
- 230000003287 optical effect Effects 0.000 claims description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000001228 spectrum Methods 0.000 claims description 7
- 229910014323 Lanthanum(III) bromide Inorganic materials 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 6
- XKUYOJZZLGFZTC-UHFFFAOYSA-K lanthanum(iii) bromide Chemical compound Br[La](Br)Br XKUYOJZZLGFZTC-UHFFFAOYSA-K 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims description 2
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 description 11
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005251 gamma ray Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
Abstract
A kind of antiuniverse ray pured germanium crystal spectrometer of anti-Compton includes lead screen room and is installed on the indoor main detector of lead screen, ring detector and meets detector, meets the top that detector is located at main detector；The ring detector is BGO scintillator detectors；The middle part of ring detector is equipped with cavity, and the top of cavity is formed for installing the first installation cavity for meeting detector, and the third installation cavity for installing main detector is formed at the lower part of cavity, and the middle part of cavity forms the second installation cavity for holding detected sample.The utility model ring detector uses BGO scintillators, small, X-ray detection X good efficiency；The utility model ring detector meets the lower part that detector and main detector are set to lead screen room, the upper and lower ends of the central cavity of ring detector are installed respectively meets detector and main detector, meeting the second installation cavity being arranged between detector and main detector for holding detected sample, the arrangement space of detector is compact, reduces volume.
Description
Technical field
The utility model is related to radioactivity survey technical field, more particularly to a kind of antiuniverse ray HpGe of anti-Compton
Spectrometer.
Background technology
When energy of γ ray is in the energy range of hundred KeV to MeV, in the power spectrum that monocrystalline detector measures, Compton level ground
Area it is often bigger, to complexity spectrum parsing increase difficulty.Gamma-ray full energy peak compared with low energy can be superimposed upon height
On the Compton level ground of energy gamma spectrum, due to the statistic fluctuation of technology on level ground, to leverage low energy gamma-rays full energy peak
The precision of area measurement, or be possible to seek the full energy peak less than low-energyγ-ray at all.The Compton scattering of high-energy ray is often
It can cause the higher fluctuation of low energy ray, or even flood low energy ray peak.Cosmic ray can bring higher background level.It is existing
Technology only has individual anti-Compton spectrometer or antiuniverse X-ray spectrometer X, cannot realize two kinds of technologies on the same device, can not
Obtain Low background, low Compton level ground spectrogram, increase the use cost of equipment.Due to pured germanium crystal spectrometer be both needed to configure it is heavier
Low background vitriol chamber, especially anticoincidence vitriol chamber, it is often time-consuming and laborious in use.The prior art uses NaI detectors more
As ring detector, NaI detectors are since it is difficult to realize large volume, the shortcomings of easily deliquescence.In addition, existing pured germanium crystal spectrometer exists
Mounting ring detector and main detector in the ontology of lead screen room install roof detector, the entirety of pured germanium crystal spectrometer in upper lead cover
Volume is larger.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of simple and compact for structure, measurement accuracy
Height, while there is the pured germanium crystal spectrometer of anti-Compton scattering and antiuniverse ray function.
To achieve the above object, the utility model uses following technical solution：
A kind of antiuniverse ray pured germanium crystal spectrometer of anti-Compton includes lead screen room 7 and the master that is installed in lead screen room 7
Detector 1, ring detector 2 and meets detector 4, meets the top that detector 4 is located at main detector 1；The ring detector 2
It is BGO scintillator detectors；The middle part of ring detector 2 is equipped with cavity, and the top of cavity is formed meets detector 4 for installing
Third installation cavity 203 for installing main detector 1 is formed at the first installation cavity 201, the lower part of cavity, and the middle part of cavity, which is formed, to be used
In the second installation cavity 202 for holding detected sample 3.
Further, it is described meet the first photomultiplier 5 is installed on detector 4, second light is installed on ring detector 2
The output end of electric multiplier tube 6, the first photomultiplier 5 and the second photomultiplier 6 is connect with the input terminal of electron-optical circuit；
When main detector 1 and ring detector 2 have signal output, meet when having output in detector 4 and main detector 1 or
When three detectors have signal output, the output signal in main detector 1 is not handled.
Further, the electron-optical circuit includes the first optical circuit, the second optical circuit, third optical circuit and symbol
Close anticoincidence circuit, the input terminal of the first optical circuit, the second optical circuit and third optical circuit respectively with the first photoelectricity times
Increase pipe 5 to connect with the output end of the second photomultiplier 6, the first optical circuit, the second optical circuit and third optical circuit
Output end is connect with the input terminal for meeting anticoincidence circuit, and the output end for meeting anticoincidence circuit is connect with microcontroller.
Further, first optical circuit includes discharge before being added road, the first amplifier circuit and the first single track circuit；
The input terminal on electric discharge road is connect with the output end of the first photomultiplier 5 and the second photomultiplier 6 before being added, the first amplifier
The input terminal of the circuit and output end on electric discharge road is connect before being added, the output end of the first amplifier circuit and the first single track circuit
Input terminal connects, and the output end of the first single track circuit is connect with the input terminal for meeting anticoincidence circuit；Second optical circuit
Including the second amplifier circuit and the second single track circuit；The input terminal of second amplifier circuit and the first photomultiplier 5
It is connected with the output end of the second photomultiplier 6, the input terminal of the output end of the second amplifier circuit and the second single track circuit connects
It connects, the output end of the second single track circuit is connect with the input terminal for meeting anticoincidence circuit；The third optical circuit includes mixing
Device, third amplifier, third single track circuit and spectrum amplifier；The input terminal of frequency mixer and the first photomultiplier 5 and the second light
The output end of electric multiplier tube 6 connects, and the input terminal of third amplifier and the output end of frequency mixer connect, the output of third amplifier
End is connect with the input terminal of third single track circuit, and the output end of third single track circuit and the input terminal for meeting anticoincidence circuit connect
It connects, the output end of the input terminal and frequency mixer of composing amplifier connects, and the output end for composing amplifier is connect with microcontroller.
Further, the anticoincidence circuit that meets includes coincident circuit and anticoincidence circuit, and coincident circuit and anticoincidence are electric
Road connects；Coincident circuit includes the first wave-shaping circuit, the first NAND gate, the first phase inverter, the second NAND gate, the second wave-shaping circuit
With the second phase inverter；The input terminal of first wave-shaping circuit is connect with the output end of the second single track circuit, the input of the first NAND gate
End is connect with the output end of the first wave-shaping circuit, and the input terminal of the first phase inverter is connect with the output end of the first NAND gate, and second
The input terminal of NAND gate is connect with the output end of the first phase inverter, the input of the output end of the second NAND gate and the second wave-shaping circuit
End connection, the output end of the second wave-shaping circuit connect with microcontroller, and the input terminal of the second phase inverter is defeated with third single track circuit
Outlet connects, and the output end of the second phase inverter is connect with the input terminal of the first NAND gate, the input terminal of the second NAND gate and anti-symbol
Close circuit connection；Anticoincidence circuit includes third wave-shaping circuit, third NAND gate U18, integrating circuit, the 4th NAND gate U19, and
Four wave-shaping circuits and third phase inverter U23；The input terminal of third wave-shaping circuit is connect with the output end of the first single track circuit, third
The input terminal of NAND gate U18 is connect with the output end of third wave-shaping circuit, input terminal and the third NAND gate of the 4th NAND gate U19
The output end of U18 connects, and the input terminal of the 4th wave-shaping circuit is connect with the output end of the 4th NAND gate U19, the 4th wave-shaping circuit
Output end connect with microcontroller, the output end of integrating circuit is connect with the input terminal of third NAND gate U18, third phase inverter
The input terminal of U23 is connect with the output end of third single track circuit, the output end of third phase inverter U23 and the 4th NAND gate U19's
Input terminal connects, and the input terminal of the output end of third NAND gate U18 and the second NAND gate of coincident circuit connects.
Further, the anticoincidence circuit further includes capacitance C15, capacitance C18, capacitance C40；The third wave-shaping circuit packet
Include processing chip U13A, capacitance C13, capacitance C43, capacitance C55 and adjustable resistance VR3；4th wave-shaping circuit includes processing chip
U13B, resistance R43, capacitance C44 and capacitance C56；The both ends of adjustable resistance VR3 respectively with the second pin of processing chip U13A and
The 15th pin of processing chip U13A connects, and the adjustable side of adjustable resistance VR3 is connect with the third pin of processing chip U13A,
One end after capacitance C43 and capacitance C55 parallel connections is connect with the 15th pin of processing chip U13A, the other end and processing chip
The 14th pin of U13A connects, and capacitance C13 is connected in parallel in the 8th pin and processing chip U13A of processing chip U13A
Between 16th pin, the tenth three-prong of processing chip U13A is connect with third NAND gate U18 the first pins of input terminal, third
The output end of the second pin of NAND gate U18 input terminals and integrating circuit connects, third NAND gate U18 output ends and the 4th NAND gate
The first pin of input terminal of U19 connects, and the output end of the 4th NAND gate U19 is connect with the 9th pin of processing chip U13B, electricity
Hold C44 and capacitance C56 to be connected in parallel between the 6th pins of processing chip U13B and the 7th pins of processing chip U13B, capacitance
One end after C44 and capacitance C56 parallel connections is connected to the tenth pin and processing chip U13B of processing chip U13B by resistance R43
The 11st pin between, the 5th pin of processing chip U13B is connect with microcontroller, the second pin of third phase inverter U23 with
The output end of third single track circuit connects, and one end ground connection of capacitance C40, the 5th pin of the other end and third phase inverter U23 connects
It connects, the third pin ground connection of third phase inverter U23, the 4th pin of third phase inverter U23 and the second of the 4th NAND gate U19
Pin connects, and one end of capacitance C15 is connect with the 5th pin of third NAND gate U18, other end ground connection, third NAND gate U18
Third pin ground connection, one end of capacitance C18 connect with the 5th pin of the 4th NAND gate U19, and the other end is grounded, the 4th and
The third pin of NOT gate U19 is grounded.
Further, the middle part of the ring detector 2 forms regular hexagonal prism shape cavity, and the ring detector 2 passes through six pieces of shapes
The BGO scintillators of the identical rectangular-shape of shape and the six block-shaped identical columnar BGO scintillators of triangle are spliced to form, six pieces
Once connection is annular in shape for the BGO scintillators of rectangular-shape, and the columnar BGO scintillators of six pieces of triangles are respectively arranged in adjacent two block length
In the gap of the BGO scintillators of cube shape.
Further, the top of the ring detector 2 is set there are six the second photomultiplier 6.
Further, the lead screen room 7 includes lead screen room ontology 72 and the upper lead being fastened on lead screen room ontology 72
Lid 71, the upper lead cover 71 on lead screen room ontology 72 are formed inside lead screen room 7 for installing main detector 1, ring after fastening
Detector 2 and the confined space for meeting detector 4.
Further, the lead screen room 7 in a rectangular parallelepiped shape, lead screen room ontology 72 be rectangular-shape, upper lead cover 71 be with
The rectangular-shape that lead screen room ontology 72 coordinates.
Further, the upper lead cover 71 is the lead structure that the mode that pours is process, and lead screen room ontology 72 includes
The madial wall of lead structure sheaf made of interfolded, lead structure sheaf is equipped with spacer layer and layers of copper successively, lead screen room ontology 72
It is inside and outside to be all made of iron plate and fix.
Further, the main detector 1 is BGO scintillators or NaI scintillators or LaBr3 scintillators；Meet spy
It is BGO scintillators or NaI scintillators or plastic scintillant or LaBr3 scintillators to survey device 4.
The utility model ring detector uses BGO scintillators, small, X-ray detection X good efficiency, while utilizing its height
The characteristic of atomic number, itself can be used as shield, reduce background level；The utility model ring detector meets detector
The lower part of lead screen room is set to main detector, the upper and lower ends of the central cavity of ring detector are installed respectively meets detector
And main detector, meeting the second installation cavity being arranged between detector and main detector for holding detected sample, detection
The arrangement space of device is compact, reduces volume；The antiuniverse ray pured germanium crystal spectrometer of the utility model anti-Compton, while realizing anti-health
Pu Dun is scattered and the function of antiuniverse ray, further increases radiometric precision, reduces Monitoring lower-cut to greatest extent.
The utility model meets switch k on detector and electronics circuit by combination, can reach realization anti-Compton is antiuniverse and penetrate
Line measurement, the measurement of high efficiency and the figure of merit, the switching of γ-γ coincidence measurements and β-γ coincidence measurements.Lead screen room is using rectangular
Structure, ensure that lead cover opening can be it is plug-type, operation can more light upper lead cover side be equipped with pulley, lead screen room
Body upper surface is equipped with guide rail, and upper lead cover can sliding type opening.
Description of the drawings
Fig. 1 is the plan view of the pured germanium crystal spectrometer of the antiuniverse ray of anti-Compton of the utility model；
Fig. 2 is the structure diagram of the utility model electron-optical circuit；
Fig. 3 is the logic diagram that the utility model meets anticoincidence circuit；
Fig. 4 is the circuit diagram of the utility model coincident circuit；
Fig. 5 is the three-dimensional structure diagram of the utility model ring detector.
Specific implementation mode
Below in conjunction with the embodiment that attached drawing 1 to 5 provides, the antiuniverse ray of the anti-Compton of the utility model is further illustrated
The specific implementation mode of pured germanium crystal spectrometer.The antiuniverse ray pured germanium crystal spectrometer of anti-Compton of the utility model is not limited to following reality
Apply the description of example.
As shown in Figure 1, a kind of antiuniverse ray pured germanium crystal spectrometer of anti-Compton of the utility model includes 7 He of lead screen room
The main detector 1 being installed in lead screen room 7, ring detector 2 and meets detector 4, meets detector 4 and is located at main detector 1
Top；The ring detector 2 is BGO scintillator detectors；The middle part of ring detector 2 is equipped with cavity, and the top of cavity is formed
For installing the first installation cavity 201 for meeting detector 4, the lower part of cavity forms the third for installing main detector 1 and installs
Chamber 203, the middle part of cavity form the second installation cavity 202 for holding detected sample 3.The utility model ring detector uses
BGO scintillators are small, X-ray detection X good efficiency, while using the characteristic of its high atomic number, itself can be used as shielding
Body reduces background level；The utility model ring detector meets the lower part that detector and main detector are set to lead screen room,
The upper and lower ends of the central cavity of ring detector are installed respectively meets detector and main detector, is meeting detector and main detection
The second installation cavity for holding detected sample is set between device, and compact-sized, the utility model anti-Compton is antiuniverse to be penetrated
Line pured germanium crystal spectrometer, while realizing the function of anti-Compton scattering and antiuniverse ray, further increase radiometric essence
Degree, reduces Monitoring lower-cut to greatest extent.
As shown in Figure 1, it is described meet the first photomultiplier 5 is installed on detector 4, is equipped on ring detector 2
The input terminal of the output end and electron-optical circuit of two photomultipliers 6, the first photomultiplier 5 and the second photomultiplier 6
Connection；When main detector 1 and ring detector 2 have signal output, meet the when of having output in detector 4 and main detector 1,
Or three detectors, when having signal output, the output signal in main detector 1 is not handled.
As shown in Fig. 2, the electron-optical circuit includes the first optical circuit, and the second optical circuit, third optical circuit
With meet anticoincidence circuit, the input terminal of the first optical circuit, the second optical circuit and third optical circuit respectively with the first light
Electric multiplier tube 5 is connected with the output end of the second photomultiplier 6, the first optical circuit, the second optical circuit and third optics electricity
The output end on road is connect with the input terminal for meeting anticoincidence circuit, and the output end for meeting anticoincidence circuit is connect with microcontroller.Institute
It includes discharge before being added road, the first amplifier circuit and the first single track circuit to state the first optical circuit；Electric discharge road is defeated before being added
Enter end connect with the output end of the first photomultiplier 5 and the second photomultiplier 6, the input terminal of the first amplifier circuit and
The output end connection on electric discharge road, the output end of the first amplifier circuit are connect with the input terminal of the first single track circuit before being added, the
The output end of one single track circuit is connect with the input terminal for meeting anticoincidence circuit；Second optical circuit includes the second amplifier
Circuit and the second single track circuit；The input terminal of second amplifier circuit and the first photomultiplier 5 and the second photomultiplier transit
The output end of pipe 6 connects, and the output end of the second amplifier circuit is connect with the input terminal of the second single track circuit, the second single track circuit
Output end connect with the input terminal for meeting anticoincidence circuit；The third optical circuit includes frequency mixer, third amplifier, and
Three single track circuits and spectrum amplifier；The output end of the input terminal of frequency mixer and the first photomultiplier 5 and the second photomultiplier 6
Connection, the input terminal of third amplifier and the output end of frequency mixer connect, output end and the third single track circuit of third amplifier
Input terminal connection, the output end of third single track circuit connect with the input terminal for meeting anticoincidence circuit, composes the input of amplifier
End is connect with the output end of frequency mixer, and the output end for composing amplifier is connect with microcontroller.
As shown in figure 3, the anticoincidence circuit that meets includes coincident circuit and anticoincidence circuit, coincident circuit and anticoincidence
Circuit connects；Coincident circuit includes the first wave-shaping circuit, the first NAND gate, the first phase inverter, the second NAND gate, the second forming electricity
Road and the second phase inverter；The input terminal of first wave-shaping circuit is connect with the output end of the second single track circuit, the first NAND gate it is defeated
Entering end to connect with the output end of the first wave-shaping circuit, the input terminal of the first phase inverter is connect with the output end of the first NAND gate, the
The input terminal of two NAND gates is connect with the output end of the first phase inverter, and the output end of the second NAND gate is defeated with the second wave-shaping circuit
Enter end connection, the output end of the second wave-shaping circuit is connect with microcontroller, input terminal and the third single track circuit of the second phase inverter
Output end connects, and the output end of the second phase inverter connect with the input terminal of the first NAND gate, the input terminal of the second NAND gate and instead
Coincident circuit connects；Anticoincidence circuit includes third wave-shaping circuit, third NAND gate U18, integrating circuit, the 4th NAND gate U19,
4th wave-shaping circuit and third phase inverter U23；The input terminal of third wave-shaping circuit is connect with the output end of the first single track circuit, the
The input terminal of three NAND gate U18 is connect with the output end of third wave-shaping circuit, the input terminal of the 4th NAND gate U19 and third with it is non-
The output end connection of door U18, the input terminal of the 4th wave-shaping circuit are connect with the output end of the 4th NAND gate U19, the 4th forming electricity
The output end on road is connect with microcontroller, and the output end of integrating circuit is connect with the input terminal of third NAND gate U18, third phase inverter
The input terminal of U23 is connect with the output end of third single track circuit, the output end of third phase inverter U23 and the 4th NAND gate U19's
Input terminal connects, and the input terminal of the output end of third NAND gate U18 and the second NAND gate of coincident circuit connects.Meet anticoincidence
Circuit includes coincident circuit and anticoincidence circuit, realizes the function of anti-Compton and antiuniverse ray, meets anticoincidence circuit
It is simple and compact for structure.
Specifically, as Fig. 4 provides the specific embodiment of anticoincidence circuit.The anticoincidence circuit further includes capacitance C15,
Capacitance C18, capacitance C40；The third wave-shaping circuit includes processing chip U13A, capacitance C13, capacitance C43, capacitance C55 and can
Adjust resistance VR3；4th wave-shaping circuit includes processing chip U13B, resistance R43, capacitance C44 and capacitance C56；Adjustable resistance VR3
Both ends connect respectively with the 15th pin of the second pin of processing chip U13A and processing chip U13A, adjustable resistance VR3
Adjustable side connect with the third pin of processing chip U13A, one end after capacitance C43 and capacitance C55 parallel connections and processing chip
The 15th pin of U13A connects, and the other end is connect with the 14th pin of processing chip U13A, and capacitance C13 is connected in parallel in place
Between the 8th pin and the 16th pin of processing chip U13A of managing chip U13A, the tenth three-prong of processing chip U13A with
Third NAND gate U18 the first pins of input terminal connect, the output end of third NAND gate U18 input terminal the second pin and integrating circuit
Connection, third NAND gate U18 output ends are connect with the first pin of input terminal of the 4th NAND gate U19, and the 4th NAND gate U19's is defeated
Outlet is connect with the 9th pin of processing chip U13B, and capacitance C44 and capacitance C56 are connected in parallel in the pipes of processing chip U13B the 6th
Between the 7th pin of foot and processing chip U13B, one end after capacitance C44 and capacitance C56 parallel connections is connected to place by resistance R43
Between the tenth pin and the 11st pin of processing chip U13B of managing chip U13B, the 5th pin and list of processing chip U13B
Piece machine connects, and the second pin of third phase inverter U23 is connect with the output end of third single track circuit, one end ground connection of capacitance C40,
The other end is connect with the 5th pin of third phase inverter U23, the third pin ground connection of third phase inverter U23, third phase inverter U23
The 4th pin connect with the second pin of the 4th NAND gate U19, the 5th pipe of one end of capacitance C15 and third NAND gate U18
Foot connects, other end ground connection, and the third pin ground connection of third NAND gate U18, one end of capacitance C18 is with the 4th NAND gate U19's
5th pin connects, other end ground connection, the third pin ground connection of the 4th NAND gate U19.Third NAND gate U18 and the 4th with it is non-
One phase inverter of connection may make up coincident circuit between door U19.The model SN74LS221 of chip U13.
Specifically, as shown in Fig. 2, when k pushes k1, package unit can realize the antiuniverse radionetric survey of anti-Compton
Function ring detector and meets detector and is all used as ring detector.When k pushes k2, package unit can be realized
The measurement function that γ-γ meet, i.e. main detector meet or γ-β meet with meeting detector and carry out γ-γ.When k is pushed
When k3, package unit can realize the measurement function of high efficiency and the figure of merit, i.e., main detector and meet detector and be all used as main spy
Device is surveyed to use.The utility model meets the switch k on detector and electronics circuit by combination, can reach realization anti-Compton
Antiuniverse radionetric survey, the measurement of high efficiency and the figure of merit, the switching of γ-γ coincidence measurements and β-γ coincidence measurements.
As shown in figure 5, the middle part of the ring detector 2 forms regular hexagonal prism shape cavity, the ring detector 2 passes through six
The BGO scintillators of block-shaped identical rectangular-shape and the six block-shaped identical columnar BGO scintillators of triangle are spliced to form,
Once connection is annular in shape for the BGO scintillators of six block length cube shapes, and the columnar BGO scintillators of six pieces of triangles are respectively arranged in adjacent two
In the gap of the BGO scintillators of block length cube shape.Ring detector 2 or other shapes, there are six the setting of ring detector 2
Second photomultiplier 6 sets first photomultiplier 5 respectively on the BGO scintillators of every block length cube shape.
Particularly, the main detector 1 is BGO scintillators or NaI scintillators or LaBr3 scintillators.Meet spy
It is BGO scintillators or NaI scintillators or plastic scintillant or LaBr3 scintillators to survey device 4.
As shown in Fig. 2, the lead screen room 7 includes lead screen room ontology 72 and is fastened on lead screen room ontology 72
Upper lead cover 71, the upper lead cover 71 on lead screen room ontology 72 are formed inside lead screen room 7 for installing main detector after fastening
1, ring detector 2 and meet the confined space of detector 4.Lead screen room uses square structure, ensure that the opening of lead cover can be with
To be plug-type, operation can more light 71 side of upper lead cover be equipped with pulley, 72 upper surface of lead screen room ontology be equipped with guide rail, on
Lead cover 71 can sliding type opening.
As shown in Figure 1, the lead screen room 7 is in a rectangular parallelepiped shape, lead screen room ontology 72 is rectangular-shape, and upper lead cover 71 is
The rectangular-shape coordinated with lead screen room ontology 72.The upper lead cover 71 is the lead structure that the mode that pours is process, the lead
Screened room ontology 72 includes lead structure sheaf made of interfolded, and the madial wall of lead structure sheaf is equipped with spacer layer and layers of copper successively,
Iron plate is all made of inside and outside lead screen room ontology 72 to fix.Lead screen room ontology 72 can also be that integral cast forms, lead screen
Room 7 is iron shield room or galvanized iron alloy screened room.
It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined
Assert that the specific implementation of the utility model is confined to these explanations.For the ordinary skill of the utility model technical field
For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard
To belong to the scope of protection of the utility model.
Claims (12)
1. a kind of antiuniverse ray pured germanium crystal spectrometer of anti-Compton, it is characterised in that：Including lead screen room (7) and it is installed on lead shield
It covers the main detector (1) in room (7), ring detector (2) and meets detector (4), meet detector (4) and be located at main detector
(1) top；The ring detector (2) is BGO scintillator detectors；
The middle part of ring detector (2) is equipped with cavity, and the top of cavity is formed for installing the first installation cavity for meeting detector (4)
(201), the third installation cavity (203) for installing main detector (1) is formed at the lower part of cavity, and the middle part of cavity is formed for containing
Put the second installation cavity (202) of detected sample (3).
2. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 1, it is characterised in that：It is described to meet detection
First photomultiplier (5) is installed on device (4), the second photomultiplier (6), the first photoelectricity are installed on ring detector (2)
The output end of multiplier tube (5) and the second photomultiplier (6) is connect with the input terminal of electron-optical circuit；When main detector (1)
Have when signal output with ring detector (2), meet in detector (4) and main detector (1) when having output or three spies
When surveying device has signal output, the output signal in main detector (1) is not handled.
3. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 2, it is characterised in that：The electron-optical
Circuit includes the first optical circuit, the second optical circuit, third optical circuit and meets anticoincidence circuit, the first optical circuit,
The input terminal of second optical circuit and third optical circuit respectively with the first photomultiplier (5) and the second photomultiplier (6)
Output end connection, the output end of the first optical circuit, the second optical circuit and third optical circuit and meet anticoincidence circuit
Input terminal connection, the output end for meeting anticoincidence circuit connect with microcontroller.
4. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 3, it is characterised in that：
First optical circuit includes discharge before being added road, the first amplifier circuit and the first single track circuit；Electric discharge before being added
The input terminal on road is connect with the output end of the first photomultiplier (5) and the second photomultiplier (6), the first amplifier circuit
Input terminal is connect with the output end for being added preceding electric discharge road, the input terminal of the output end of the first amplifier circuit and the first single track circuit
Connection, the output end of the first single track circuit are connect with the input terminal for meeting anticoincidence circuit；
Second optical circuit includes the second amplifier circuit and the second single track circuit；The input of second amplifier circuit
End connect with the output end of the first photomultiplier (5) and the second photomultiplier (6), the output end of the second amplifier circuit and
The input terminal of second single track circuit connects, and the output end of the second single track circuit is connect with the input terminal for meeting anticoincidence circuit；
The third optical circuit includes frequency mixer, third amplifier, third single track circuit and spectrum amplifier；The input of frequency mixer
End connect with the output end of the first photomultiplier (5) and the second photomultiplier (6), the input terminal of third amplifier be mixed
The output end of device connects, and the output end of third amplifier is connect with the input terminal of third single track circuit, third single track circuit it is defeated
Outlet is connect with the input terminal for meeting anticoincidence circuit, and the output end of the input terminal and frequency mixer of composing amplifier connects, spectrum amplification
The output end of device is connect with microcontroller.
5. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 3, it is characterised in that：It is described to meet anti-symbol
It includes coincident circuit and anticoincidence circuit to close circuit, and coincident circuit is connected with anticoincidence circuit；
Coincident circuit include the first wave-shaping circuit, the first NAND gate, the first phase inverter, the second NAND gate, the second wave-shaping circuit and
Second phase inverter；The input terminal of first wave-shaping circuit is connect with the output end of the second single track circuit, the input terminal of the first NAND gate
Connect with the output end of the first wave-shaping circuit, the input terminal of the first phase inverter is connect with the output end of the first NAND gate, second with
The input terminal of NOT gate is connect with the output end of the first phase inverter, the input terminal of the output end of the second NAND gate and the second wave-shaping circuit
Connection, the output end of the second wave-shaping circuit are connect with microcontroller, the output of the input terminal and third single track circuit of the second phase inverter
End connection, the output end of the second phase inverter are connect with the input terminal of the first NAND gate, the input terminal of the second NAND gate and anticoincidence
Circuit connects；
Anticoincidence circuit includes third wave-shaping circuit, third NAND gate U18, integrating circuit, the 4th NAND gate U19, the 4th forming
Circuit and third phase inverter U23；The input terminal of third wave-shaping circuit is connect with the output end of the first single track circuit, third NAND gate
The input terminal of U18 is connect with the output end of third wave-shaping circuit, and the input terminal of the 4th NAND gate U19 is with third NAND gate U18's
Output end connects, and the input terminal of the 4th wave-shaping circuit is connect with the output end of the 4th NAND gate U19, the output of the 4th wave-shaping circuit
End is connect with microcontroller, and the output end of integrating circuit is connect with the input terminal of third NAND gate U18, and third phase inverter U23's is defeated
Enter end to connect with the output end of third single track circuit, the output end of third phase inverter U23 and the input terminal of the 4th NAND gate U19 connect
It connects, the input terminal connection of the output end of third NAND gate U18 and the second NAND gate of coincident circuit.
6. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 5, it is characterised in that：The anticoincidence electricity
Road further includes capacitance C15, capacitance C18, capacitance C40；The third wave-shaping circuit includes processing chip U13A, capacitance C13, capacitance
C43, capacitance C55 and adjustable resistance VR3；4th wave-shaping circuit includes processing chip U13B, resistance R43, capacitance C44 and capacitance
C56；
The both ends of adjustable resistance VR3 connect with the 15th pin of the second pin of processing chip U13A and processing chip U13A respectively
It connecing, the adjustable side of adjustable resistance VR3 is connect with the third pin of processing chip U13A, and one after capacitance C43 and capacitance C55 parallel connections
End is connect with the 15th pin of processing chip U13A, and the other end is connect with the 14th pin of processing chip U13A, capacitance C13
It is connected in parallel between the 8th pin of processing chip U13A and the 16th pin of processing chip U13A, processing chip U13A's
Tenth three-prong is connect with third NAND gate U18 the first pins of input terminal, third the second pin of NAND gate U18 input terminals and integral
The output end of circuit connects, and third NAND gate U18 output ends are connect with the first pin of input terminal of the 4th NAND gate U19, and the 4th
The output end of NAND gate U19 is connect with the 9th pin of processing chip U13B, and capacitance C44 and capacitance C56 are connected in parallel in processing
Between the 6th pins of chip U13B and the 7th pins of processing chip U13B, one end after capacitance C44 and capacitance C56 parallel connections is by electricity
Resistance R43 is connected between the tenth pin of processing chip U13B and the 11st pin of processing chip U13B, processing chip U13B
The 5th pin connect with microcontroller, the second pin of third phase inverter U23 is connect with the output end of third single track circuit, capacitance
One end of C40 is grounded, and the other end is connect with the 5th pin of third phase inverter U23, and the third pin of third phase inverter U23 connects
4th pin on ground, third phase inverter U23 is connect with the second pin of the 4th NAND gate U19, one end of capacitance C15 and third with
The 5th pin of NOT gate U18 connects, other end ground connection, the third pin ground connection of third NAND gate U18, one end of capacitance C18 with
The 5th pin of 4th NAND gate U19 connects, other end ground connection, the third pin ground connection of the 4th NAND gate U19.
7. according to any antiuniverse ray pured germanium crystal spectrometers of anti-Compton of claim 1-4, it is characterised in that：The ring
The middle part of detector (2) forms regular hexagonal prism shape cavity, and the ring detector (2) passes through six block-shaped identical rectangular-shapes
BGO scintillators and the six block-shaped identical columnar BGO scintillators of triangle are spliced to form, the BGO scintillators of six block length cube shapes
Primary connection is annular in shape, and the columnar BGO scintillators of six pieces of triangles are respectively arranged in the BGO scintillators of adjacent two block lengths cube shape
In gap.
8. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 7, it is characterised in that：The ring detector
(2) the second photomultiplier (6) there are six being set above.
9. according to any antiuniverse ray pured germanium crystal spectrometers of anti-Compton of claim 1-4, it is characterised in that：The lead
Screened room (7) includes lead screen room ontology (72) and the upper lead cover (71) being fastened on lead screen room ontology (72), lead screen room
Upper lead cover (71) on ontology (72) is formed inside lead screen room (7) for installing main detector (1), ring detector after fastening
(2) and meet the confined spaces of detector (4).
10. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 9, it is characterised in that：The lead screen
In a rectangular parallelepiped shape, lead screen room ontology (72) is rectangular-shape for room (7), and upper lead cover (71) is to coordinate with lead screen room ontology (72)
Rectangular-shape.
11. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 9, it is characterised in that：The upper lead cover
(71) it is to pour the lead structure that mode is process, lead screen room ontology (72) includes lead structure made of interfolded
The madial wall of layer, lead structure sheaf is equipped with spacer layer and layers of copper successively, and being all made of iron plate inside and outside lead screen room ontology (72) fixes.
12. the antiuniverse ray pured germanium crystal spectrometer of anti-Compton according to claim 1, it is characterised in that：The main detection
Device (1) is BGO scintillators or NaI scintillators or LaBr3 scintillators；Meet detector (4) be BGO scintillators or
NaI scintillators or plastic scintillant or LaBr3 scintillators.
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| CN108415065A (en) * | 2018-02-26 | 2018-08-17 | 上海新漫传感技术研究发展有限公司 | The antiuniverse ray pured germanium crystal spectrometer of anti-Compton |
| CN109725342A (en) * | 2019-01-01 | 2019-05-07 | 中国人民解放军63653部队 | A kind of scatter suppression detecting structure with the measurement of low-energyγ-ray on site |
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| CN109696700B (en) * | 2018-12-27 | 2020-12-22 | 中国工程物理研究院材料研究所 | Extremely low level transuranic nuclide radioactive waste package detection system |
| CN109633732A (en) * | 2019-01-09 | 2019-04-16 | 中国原子能科学研究院 | A kind of measuring device |
| CN112331372B (en) * | 2020-09-29 | 2023-07-07 | 中广核工程有限公司 | Device and method for online measurement of inert gas in gaseous effluent of nuclear facility |
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| US3767915A (en) * | 1970-10-14 | 1973-10-23 | L Battist | Radiation monitoring system |
| KR100372755B1 (en) * | 2000-03-02 | 2003-02-17 | 한국수력원자력 주식회사 | Multi-Functional Gamma Radiation Spectrometer and Detection Method Theirof |
| US8901503B2 (en) * | 2012-04-19 | 2014-12-02 | Canberra Industries, Inc. | Radiation detector system and method |
| CN104820232A (en) * | 2015-04-24 | 2015-08-05 | 中国船舶重工集团公司第七一九研究所 | On-line type energy spectrum analysis anti-coincidence measurement detector |
| CN106443752A (en) * | 2016-08-31 | 2017-02-22 | 成都理工大学 | Low-cost weak radionuclide detecting method |
| CN107238855B (en) * | 2017-07-18 | 2024-01-26 | 上海新漫传感科技有限公司 | anti-Compton anti-cosmic ray high-purity germanium spectrometer |
| CN108415065A (en) * | 2018-02-26 | 2018-08-17 | 上海新漫传感技术研究发展有限公司 | The antiuniverse ray pured germanium crystal spectrometer of anti-Compton |
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| CN108415065A (en) * | 2018-02-26 | 2018-08-17 | 上海新漫传感技术研究发展有限公司 | The antiuniverse ray pured germanium crystal spectrometer of anti-Compton |
| CN109725342A (en) * | 2019-01-01 | 2019-05-07 | 中国人民解放军63653部队 | A kind of scatter suppression detecting structure with the measurement of low-energyγ-ray on site |
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