CN204086561U - A kind of silicon photomultiplier apparatus for testing chip - Google Patents
A kind of silicon photomultiplier apparatus for testing chip Download PDFInfo
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- CN204086561U CN204086561U CN201420524891.6U CN201420524891U CN204086561U CN 204086561 U CN204086561 U CN 204086561U CN 201420524891 U CN201420524891 U CN 201420524891U CN 204086561 U CN204086561 U CN 204086561U
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- seal box
- silicon photomultiplier
- chip
- test board
- radiation source
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- 238000012360 testing method Methods 0.000 title claims abstract description 62
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 56
- 239000010703 silicon Substances 0.000 title claims abstract description 56
- 230000002285 radioactive effect Effects 0.000 claims abstract description 39
- 239000013078 crystal Substances 0.000 claims abstract description 37
- 239000002775 capsule Substances 0.000 claims abstract description 35
- 230000005855 radiation Effects 0.000 claims abstract description 31
- 239000000463 material Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 17
- 230000002123 temporal effect Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000005693 optoelectronics Effects 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002600 positron emission tomography Methods 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000009509 drug development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 239000002858 neurotransmitter agent Substances 0.000 description 1
- 239000002547 new drug Substances 0.000 description 1
- 238000009206 nuclear medicine Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
Abstract
The utility model provides a kind of silicon photomultiplier apparatus for testing chip, comprising: radiation source capsule and seal box; Wherein, radioactive source is provided with in radiation source capsule; Seal box comprises: seal box lid, ray entrance window, seal box box body, seal box base plate, crystal array, silicon photomultiplier chip and test board; Radiation source capsule is arranged on ray entrance window; Seal box lid upper surface is provided with data output interface and power input interface; The output terminal of data output interface is connected with detector test platform, and the input end of power input interface is connected with extraneous power supply; Test board is provided with: sensing circuit, test board data output and plant-grid connection mouth, silicon photomultiplier chip is connected by the input end of sensing circuit with test board data output, and the power input of silicon photomultiplier chip is connected with the output terminal of power input interface by plant-grid connection mouth; Crystal array comprises multiple crystal bar.
Description
Technical field
The utility model relates to detector technology field, is specifically related to a kind of silicon photomultiplier apparatus for testing chip.
Background technology
Positron emission tomography device (PET, Positron Emission Tomography) be after x-ray tomography imaging and mr imaging technique, computerized tomography technology is applied to the clinical examination image technology that the field of nuclear medicine is more advanced, be the only New video technology that can show biomolecule metabolism, acceptor and neurotransmitter activity on live body at present, be now widely used in the aspects such as the Diagnosis and differential diaggnosis of various diseases, state of an illness judgement, therapeutic evaluation, organ function research and new drug development.
PET scanner is made up of detector, front-end electronics, examination couch, computing machine and other slave parts, and detector is the kernel component of PET, is PET " eyes ".Position resolution, the technical indicator such as temporal resolution and sensitivity of a PET scanner depend primarily on the detector that it uses, and namely PET scanner finally provides the quality of image and practical assessment first to depend on detector.
Detector is primarily of crystal array and electrooptical device composition, and crystal array is mainly used in absorbing γ photon, produces fluorescence, and electrooptical device Main Function absorbs fluorescence, and through opto-electronic conversion, and amplification produces pulsed current signal.
Photoelectric commutator now for PET scanner mainly contains two kinds, and one is common photomultiplier, and another kind is SIPM (silicon photomultiplier).
SIPM detector is primarily of crystal array, SIPM chip, sensing circuit, seal box composition, the crystal bar one_to_one corresponding of SIPM chip and crystal array, SIPM detector has the features such as spatial resolution is high, energy resolution is high, temporal resolution is high, diamagnetism, being the detector being used in function admirable in PET scanner, is the development trend of future probes device.And the performances such as the spatial resolution of SIPM detector, energy resolution, temporal resolution are by the impact of sensing circuit, by to the optimization of sensing circuit and improvement, the SIPM detector that spatial resolution is high, energy resolution is high, temporal resolution is high can be designed.
Utility model content
The SIPM detector that spatial resolution is high, energy resolution is high in order to design, temporal resolution is high, the utility model provides a kind of silicon photomultiplier apparatus for testing chip.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
The utility model provides a kind of silicon photomultiplier apparatus for testing chip, comprising: radiation source capsule and seal box, and radiation source capsule is positioned on seal box;
Wherein, be provided with radioactive source in radiation source capsule, radioactive source direction is arranged down;
Seal box comprises: seal box lid, ray entrance window, seal box box body, seal box base plate, crystal array, silicon photomultiplier chip and test board; Seal box lid is arranged on seal box box body, and seal box box body is installed on seal box base plate; Silicon photomultiplier chip is embedded on test board, and crystal array is fixed in seal box by bolt, and crystal array covers on silicon photomultiplier chip, and test board is positioned within seal box; Ray entrance window is positioned on seal box lid, and radiation source capsule is arranged on ray entrance window;
Seal box lid upper surface is provided with data output interface and power input interface; The output terminal of data output interface is connected with detector test platform, and the input end of power input interface is connected with extraneous power supply;
Test board is arranged in sealing box body by mounting bracket is unsettled, and mounting bracket lower end is fixed on seal box base plate; Test board is provided with: sensing circuit, test board data output and plant-grid connection mouth, and the input end of data output interface is connected with the output terminal of test board data output, and plant-grid connection mouth is connected with the output terminal of power input interface; Silicon photomultiplier chip is connected by the input end of sensing circuit with test board data output, and the power input of silicon photomultiplier chip is connected with the output terminal of power input interface by plant-grid connection mouth;
Crystal array comprises multiple crystal bar; Silicon photomultiplier chip is provided with multiple silicon photomultiplier unit, each silicon photomultiplier unit and crystal bar one_to_one corresponding.
Further, radiation source capsule comprises at the bottom of radioactive source box body, radioactive source lid and radiation source capsule, and integral with radioactive source box body at the bottom of radiation source capsule, radioactive source lid is positioned on radioactive source box body; Radioactive source is placed at the bottom of radiation source capsule.。
Further, the material of source capsule is radiated for shielding material.
Further, radioactive source is gamma-rays radioactive source.
Further, the first sealing strip is provided with between seal box lid and seal box box body; The second sealing strip is provided with between seal box box body and seal box base plate.。
Further, the material of ray entrance window is keep away visible ray and allow the material that gamma-rays passes through.
Further, elastomeric pad is provided with between bolt and crystal array.
Further, the through hole being provided with the ray launched for radioactive source at the bottom of source capsule and passing through is radiated.
Further, reflection horizon is scribbled between crystal bar.
Further, the material of seal box box body, seal box lid, seal box base plate, the first sealing strip and the second sealing strip is lucifuge material.
The beneficial effects of the utility model are:
The silicon photomultiplier apparatus for testing chip that the utility model provides, silicon photomultiplier chip and sensing circuit are integrated on test board, crystal array absorbs gamma-rays and produces fluorescence, fluorescence is absorbed by silicon photomultiplier chip and carries out opto-electronic conversion, produce pulse current, and by test board data output, pulse current is transferred to detector test platform.By constantly driving into and optimizing sensing circuit, change the performance of silicon photomultiplier chip, and then design the SIPM detector that spatial resolution is high, energy resolution is high, temporal resolution is high.
Accompanying drawing explanation
Fig. 1 is the structural drawing of the silicon photomultiplier apparatus for testing chip described in the utility model embodiment;
Fig. 2 is that the A-A of Fig. 1 is to cut-open view;
Fig. 3 is the partial sectional view overlooking direction of the seal box of the silicon photomultiplier apparatus for testing chip described in the utility model embodiment;
Fig. 4 is the structural drawing of the test board described in the utility model embodiment.
Description of reference numerals:
1, source capsule is radiated; 2, seal box; 3, radioactive source; 4, seal box lid; 5, ray entrance window; 6, seal box box body; 7, seal box base plate; 8, crystal array; 9, silicon photomultiplier chip; 10, test board; 11, data output interface; 12, power input interface; 13, mounting bracket; 14, test board data output; 15, plant-grid connection mouth; 16, crystal bar; 17, silicon photomultiplier unit; 18, radioactive source box body; 19, radioactive source lid; 20, radiate at the bottom of source capsule; 21, mounting groove; 22, the first sealing strip; 23, the second sealing strip; 24, bolt.
Embodiment
For making the technical problems to be solved in the utility model, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
See Fig. 1, the utility model provides a kind of silicon photomultiplier apparatus for testing chip, comprising: radiation source capsule 1 and seal box 2, and radiation source capsule 1 is positioned on seal box 2;
See Fig. 1 and Fig. 2, be provided with radioactive source 3 in radiation source capsule 1, radioactive source 3 direction is arranged down, and the direction namely towards seal box 2 is arranged; Further, radiation source capsule 1 comprise radioactive source box body 18, radioactive source lid 19 and radiation source capsule at the bottom of 20, radiation source capsule at the bottom of 20 with radioactive source box body 18 integral, radioactive source lid 19 is positioned on radioactive source box body 18; Further, to radiate at the bottom of source capsule 20 and be provided with the through hole that the ray launched for radioactive source 3 passes through; Radioactive source 3 to be placed at the bottom of radiation source capsule on 20.Further, the material of radiation source capsule 1 is shielding material, and the ray that can effectively avoid radioactive source 3 to launch injects to device outside, causes radiation to human body or other materials; Alternatively, radioactive source 3 is gamma-rays radioactive source.
Seal box 2 comprises: seal box lid 4, ray entrance window 5, seal box box body 6, seal box base plate 7, crystal array 8, silicon photomultiplier chip 9 and test board 10; Seal box lid 4 is arranged on seal box box body 6, and seal box box body 6 is installed on seal box base plate 7; Further, the first sealing strip 22 is provided with between seal box lid 4 and seal box box body 6; The second sealing strip 23 is provided with between seal box box body 6 and seal box base plate 7.Silicon photomultiplier chip 9 is embedded on test board 10, crystal array 8 is fixed in seal box 2 by bolt 24, crystal array 8 covers on silicon photomultiplier chip 9, test board 10 is positioned within seal box 2, further, elastomeric pad is provided with between bolt 24 and crystal array 8; Ray entrance window 5 is positioned on seal box lid 4, and radiation source capsule 1 is arranged on ray entrance window 5; Further, the material of ray entrance window 5 is keep away visible ray and allow the material that gamma-rays passes through; The material of seal box box body 6, seal box lid 4, seal box base plate 7, first sealing strip 22 and the second sealing strip 23 is lucifuge material.
Seal box lid 4 upper surface is provided with data output interface 11 and power input interface 12; The output terminal of data output interface 11 is connected with detector test platform, and the input end of power input interface 12 is connected with extraneous power supply;
See Fig. 3 and Fig. 4, test board 10 is arranged in sealing box body 6 by mounting bracket 13 is unsettled, and mounting bracket 13 lower end is fixed on seal box base plate 7; Test board 10 is provided with: sensing circuit, test board data output 14 and plant-grid connection mouth 15, and the input end of data output interface 11 is connected with the output terminal of test board data output 14, and plant-grid connection mouth 15 is connected with the output terminal of power input interface 12; Silicon photomultiplier chip 9 is connected by the input end of sensing circuit with test board data output 14, and the power input of silicon photomultiplier chip 9 is connected with the output terminal of power input interface 12 by plant-grid connection mouth 15;
Crystal array 8 comprises multiple crystal bar 16; Further, reflection horizon is scribbled between crystal bar 16; Silicon photomultiplier chip 9 is provided with multiple silicon photomultiplier unit 17, each silicon photomultiplier unit 17 and crystal bar 16 one_to_one corresponding.
Radioactive source 3 launches gamma-rays to seal box 2 endlessly, gamma-rays is irradiated in crystal array 8 by ray entrance window 5, crystal array 8 absorbs gamma-rays and produces fluorescence, fluorescence is absorbed by silicon photomultiplier chip 9 and carries out opto-electronic conversion and amplify obtaining pulse current, pulse current is transferred to detector test platform by test board data output 14 by the sensing circuit of test board 10, detector test platform demonstrates the energy spectrogram of detector, the index of the reflection such as scatter diagram detector performance, by continuing to optimize improvement to sensing circuit, the performance of silicon photomultiplier chip 9 can be changed, and then design energy resolution, spatial resolution is high, the silicon photomultiplier detector of the function admirable that temporal resolution is high.
The above is preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from principle described in the utility model; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. a silicon photomultiplier apparatus for testing chip, is characterized in that, comprising: radiation source capsule and seal box, and described radiation source capsule is positioned on described seal box;
Wherein, be provided with radioactive source in described radiation source capsule, described radioactive source direction is arranged down;
Described seal box comprises: seal box lid, ray entrance window, seal box box body, seal box base plate, crystal array, silicon photomultiplier chip and test board; Described seal box lid is arranged on described seal box box body, and described seal box box body is installed on described seal box base plate; Described silicon photomultiplier chip is embedded on described test board, and described crystal array is fixed in described seal box by bolt, and described crystal array covers on described silicon photomultiplier chip, and described test board is positioned within described seal box; Described ray entrance window is positioned on described seal box lid, and described radiation source capsule is arranged on described ray entrance window;
Described seal box lid upper surface is provided with data output interface and power input interface; The output terminal of described data output interface is connected with detector test platform, and the input end of described power input interface is connected with extraneous power supply;
Described test board is arranged in described sealing box body by mounting bracket is unsettled, and described mounting bracket lower end is fixed on described seal box base plate; Described test board is provided with: sensing circuit, test board data output and plant-grid connection mouth, the input end of described data output interface is connected with the output terminal of described test board data output, and described plant-grid connection mouth is connected with the output terminal of described power input interface; Described silicon photomultiplier chip is connected with the input end of described test board data output by described sensing circuit, and the power input of described silicon photomultiplier chip is connected with the output terminal of described power input interface by described plant-grid connection mouth;
Described crystal array comprises multiple crystal bar; Described silicon photomultiplier chip is provided with multiple silicon photomultiplier unit, each described silicon photomultiplier unit and described crystal bar one_to_one corresponding.
2. silicon photomultiplier apparatus for testing chip as claimed in claim 1, it is characterized in that, described radiation source capsule comprises at the bottom of radioactive source box body, radioactive source lid and radiation source capsule, integral with described radioactive source box body at the bottom of described radiation source capsule, described radioactive source lid is positioned on described radioactive source box body; Described radioactive source is placed at the bottom of described radiation source capsule.
3. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, the material of described radiation source capsule is shielding material.
4. silicon photomultiplier apparatus for testing chip as claimed in claim 1, it is characterized in that, described radioactive source is gamma-rays radioactive source.
5. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, be provided with the first sealing strip between described seal box lid and seal box box body; The second sealing strip is provided with between described seal box box body and described seal box base plate.
6. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, the material of described ray entrance window is keep away visible ray and allow the material that gamma-rays passes through.
7. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, be provided with elastomeric pad between described bolt and described crystal array.
8. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, is provided with the through hole that the ray launched for described radioactive source passes through at the bottom of described radiation source capsule.
9. silicon photomultiplier apparatus for testing chip as claimed in claim 1, is characterized in that, scribble reflection horizon between described crystal bar.
10. silicon photomultiplier apparatus for testing chip as claimed in claim 1, it is characterized in that, the material of described seal box box body, seal box lid, seal box base plate, the first sealing strip and the second sealing strip is lucifuge material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524891.6U CN204086561U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon photomultiplier apparatus for testing chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524891.6U CN204086561U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon photomultiplier apparatus for testing chip |
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| CN204086561U true CN204086561U (en) | 2015-01-07 |
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| CN201420524891.6U Expired - Fee Related CN204086561U (en) | 2014-09-12 | 2014-09-12 | A kind of silicon photomultiplier apparatus for testing chip |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467427A (en) * | 2014-09-12 | 2016-04-06 | 北京大基康明医疗设备有限公司 | Silicon photomultiplier chip test device |
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- 2014-09-12 CN CN201420524891.6U patent/CN204086561U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467427A (en) * | 2014-09-12 | 2016-04-06 | 北京大基康明医疗设备有限公司 | Silicon photomultiplier chip test device |
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