CN105467427A - Silicon photomultiplier chip test device - Google Patents
Silicon photomultiplier chip test device Download PDFInfo
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- CN105467427A CN105467427A CN201410464667.7A CN201410464667A CN105467427A CN 105467427 A CN105467427 A CN 105467427A CN 201410464667 A CN201410464667 A CN 201410464667A CN 105467427 A CN105467427 A CN 105467427A
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Abstract
The invention provides a silicon photomultiplier chip test device. The device comprises a radioactive source box and a sealing box. The radioactive source box is internally provided with a radioactive source. The sealing box comprises a sealing box cover, a ray incident window, a sealing box body, a sealing box base plate, a crystal array, a silicon photomultiplier chip and a test plate. The radioactive source box is disposed on the ray incident window. The upper surface of the sealing box cover is provided with a data output port and a power supply input interface. The output end of the data output interface is connected to a detector test platform. The input end of the power supply input interface is connected to an external power supply. The test plate is equipped with a readout circuit, a test plate data output port and a power supply access port. The silicon photomultiplier chip is connected to the input end of the test plate data output port through the readout circuit. The power supply input end of the silicon photomultiplier chip is connected to the output end of the power supply input interface through the power supply access port. The crystal array comprises a plurality of crystal strips.
Description
Technical field
The present invention relates to detector technology field, be specifically related to a kind of silicon photomultiplier apparatus for testing chip.
Background technology
Positron emission tomography device (PET, PositronEmissionTomography) 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.
Summary of the invention
The SIPM detector that spatial resolution is high, energy resolution is high in order to design, temporal resolution is high, the invention provides a kind of silicon photomultiplier apparatus for testing chip.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
The invention provides a kind of silicon photomultiplier apparatus for testing chip, comprising: radiation source capsule and seal box, 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 invention has the beneficial effects as follows:
Silicon photomultiplier apparatus for testing chip provided by the invention, 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 embodiment of the present invention;
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 embodiment of the present invention;
Fig. 4 is the structural drawing of the test board described in the embodiment of the present invention.
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 problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
See Fig. 1, the invention provides a kind of silicon photomultiplier apparatus for testing chip, comprising: radiation source capsule 1 and seal box 2, 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 the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
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 |
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| CN201410464667.7A CN105467427A (en) | 2014-09-12 | 2014-09-12 | Silicon photomultiplier chip test device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410464667.7A CN105467427A (en) | 2014-09-12 | 2014-09-12 | Silicon photomultiplier chip test device |
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| CN201410464667.7A Pending CN105467427A (en) | 2014-09-12 | 2014-09-12 | Silicon photomultiplier chip test device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106526656A (en) * | 2016-10-29 | 2017-03-22 | 无锡通透光电科技有限公司 | Crystal test platform uniformity correction method |
| CN106597569A (en) * | 2016-10-29 | 2017-04-26 | 无锡通透光电科技有限公司 | Multifunctional scintillation crystal testing platform |
| CN108983282A (en) * | 2018-09-13 | 2018-12-11 | 江苏赛诺格兰医疗科技有限公司 | A kind of silicon photomultiplier test platform |
| CN109490942A (en) * | 2018-12-03 | 2019-03-19 | 天津华放科技有限责任公司 | One kind being based on multi-rotor unmanned aerial vehicle flight formula nuclide identification survey meter |
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| CN106526656A (en) * | 2016-10-29 | 2017-03-22 | 无锡通透光电科技有限公司 | Crystal test platform uniformity correction method |
| CN106597569A (en) * | 2016-10-29 | 2017-04-26 | 无锡通透光电科技有限公司 | Multifunctional scintillation crystal testing platform |
| CN108983282A (en) * | 2018-09-13 | 2018-12-11 | 江苏赛诺格兰医疗科技有限公司 | A kind of silicon photomultiplier test platform |
| CN108983282B (en) * | 2018-09-13 | 2020-01-10 | 江苏赛诺格兰医疗科技有限公司 | Silicon photomultiplier test platform |
| CN109490942A (en) * | 2018-12-03 | 2019-03-19 | 天津华放科技有限责任公司 | One kind being based on multi-rotor unmanned aerial vehicle flight formula nuclide identification survey meter |
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