CN104793229A - Radial detector - Google Patents
Radial detector Download PDFInfo
- Publication number
- CN104793229A CN104793229A CN201510188484.1A CN201510188484A CN104793229A CN 104793229 A CN104793229 A CN 104793229A CN 201510188484 A CN201510188484 A CN 201510188484A CN 104793229 A CN104793229 A CN 104793229A
- Authority
- CN
- China
- Prior art keywords
- electrode glass
- photocathode
- resistive plate
- scintillator
- detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measurement Of Radiation (AREA)
Abstract
The invention discloses a radial detector. The radial detector comprises a resistive board chamber, a flashing body and a photoelectric cathode. The resistive board chamber comprises first electrode glass, and the photoelectric cathode is arranged on the first electrode glass. The flashing body is arranged outside the resistive board chamber. The radial detector is high in sensitivity and position resolving power, capable of strengthening quanta, low in cost and applicable to detector systems such as SPECT (single-photon emission computed tomography) and PET (positron emission tomography).
Description
Technical field
The invention belongs to radiation detection field, particularly a kind of ray detector.
Background technology
In the detector systems such as single photon emission tomographic imaging (SPECT) and positron emission tomography (PET), owing to having scintillator structure, it is high that described detector has detection efficiency, the feature sensitive to ray, but its resolution characteristic is low.
The resolution force of resistive plate cell structure detector is high, but it is low to the sensitivity of ray.
Summary of the invention
The present invention is intended at least to solve one of technical matters existed in prior art.For this reason, the invention provides a kind of ray detector.
The ray detector of better embodiment of the present invention, comprises resistive plate room, scintillator and photocathode, and described resistive plate room comprises the first electrode glass, and described photocathode is located on the first electrode glass; Described scintillator is located at described resistive plate outdoor.
In the ray detector of better embodiment of the present invention, due to highly sensitive to ray of scintillator, detection efficiency is high, and resistive plate cell structure resolution characteristic is strong, resistive plate room and scintillator are combined, the high sensitivity of ray detector can be realized, the function of high resolution.Photocathode in this detector has the function of opto-electronic conversion, ray information can be converted to electronic information, is located at the scintillator of resistive plate outdoor, is convenient to receive the ray sent in human body, thus improves sensitivity and the detection efficiency of ray detector.
In some embodiments, described photocathode is located at resistive plate chamber interior, and with described first electrode glass surface contact.
In some embodiments, described scintillator is arranged on described first electrode glass.
In some embodiments, described resistive plate room also comprises the second electrode glass and carbon film, described resistive plate chamber interior is located at by described second electrode glass, described second electrode glass and described first electrode glass are parallel to each other, described carbon film is located on the surface of described second electrode glass away from described photocathode, described carbon film and described photocathode are added with the generating positive and negative voltage being greater than 1000V respectively, and the resistivity under described first electrode glass and described second electrode glass normal temperature is greater than 10
12Ω .cm.
Additional aspect of the present invention and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or additional aspect of the present invention and advantage will become obvious and easy understand from accompanying drawing below combining to the description of embodiment, wherein:
Fig. 1 is the ray detector structural representation of better embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end ", " interior ", " outward ", " clockwise ", orientation or the position relationship of the instruction such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limitation of the present invention can not be interpreted as.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or imply the quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more described features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection or can communication mutually; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score can comprise the first and second features and directly contact, also can comprise the first and second features and not be directly contact but by the other characterisation contact between them.And, fisrt feature second feature " on ", " top " and " above " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " below " and " below " comprise fisrt feature directly over second feature and oblique upper, or only represent that fisrt feature level height is less than second feature.
The invention provides a kind of ray detector, be explained below in conjunction with accompanying drawing.
Fig. 1 is the ray detector structural representation of better embodiment of the present invention.
The ray detector of better embodiment of the present invention comprises resistive plate room 10, scintillator 20 and photocathode 30, and described resistive plate room 10 comprises the first electrode glass 101a, and described photocathode 30 is located on the first electrode glass 101a; It is outside that described scintillator 20 is located at described resistive plate room 10.
In the ray detector of better embodiment of the present invention, described scintillator 20 pairs of rays highly sensitive, detection efficiency is high, and described scintillator 20 can produce visible ray by after ray excitation.And to have resolution characteristic strong in described resistive plate room 10, structure is simple, the features such as low price, described resistive plate room 10 and described scintillator 20 are combined, the high sensitivity of ray detector can be realized, the function of high resolution, and structure is simple, low price, can be widely used on X-ray detection X field, especially in the detector system such as single photon emission tomographic imaging (SPECT) and positron emission tomography (PET).Described photocathode 30 has the effect of opto-electronic conversion, can receive the visible ray that described scintillator 20 sends, and inspire electronics, visible ray information can be converted to electronic information.Because each electronics all sends from described photocathode 30, therefore from described photocathode 30 electronics sent and the number of electrons approximately equal causing snowslide, so the resistive plate room adding described photocathode 30 is just equivalent to the photomultiplier cell of a gas, described detector has very high photoelectron gain function.It is outside that described scintillator 20 is located at described resistive plate room 10, is convenient to receive the ray sent in human body, thus improve sensitivity and the detection efficiency of ray detector.
In some embodiments, it is inner that described photocathode 30 is located at described resistive plate room 10, and with described first electrode glass 101a surface contact.
Setting like this, the working gas that described photocathode 30 is excited in the electrons of rear generation and described resistive plate room 10 is had an effect, and working gas ionizes out electronic secondary.Described photocathode 30 and described first electrode glass 101a surface contact, after described photocathode 30 adds voltage, described first electrode glass 101a also can add voltage accordingly, realizes the alive requirement of battery lead plate in the technology of resistive plate room.
In some embodiments, described scintillator 20 is arranged on described first electrode glass 101a.
Setting like this, the distance of described scintillator 20 and described photocathode 30 can be shortened, reduce the impact of the visible ray that scintillator 20 sends described in outer bound pair, improve the efficiency that described photocathode 30 collects the visible ray that described scintillator 20 sends, thus improve detection efficiency, sensitivity and the resolution characteristic of ray detector further.
In some embodiments, in described resistive plate room 10, be filled with working gas, and the pressure of working gas is an atmospheric pressure.
Setting like this, under the electronic action that described photocathode 30 sends, working gas ionizes out more times grade of electronics, forms snowslide, increases the induction current that electronic secondary produces.
Further, described working gas can be the gas such as freon or xenon, and this type of gas can ionize out electronic secondary and form snowslide under the effect of electronics.
In some embodiments, described resistive plate room 10 also comprises the second electrode glass 101b and carbon film 102, it is inner that described second electrode glass 101b is located at described resistive plate room 10, described second electrode glass 101b and described first electrode glass 101a is parallel to each other, described carbon film 102 is located on the surface of described second electrode glass 101b away from described photocathode 30, described carbon film 102 and described photocathode 30 are added with the generating positive and negative voltage being greater than 1000V respectively, and the resistivity under described first electrode glass 101a and described second electrode glass 101b normal temperature is greater than 10
12Ω .cm.
Setting like this, can make to form electric field between described first electrode glass 101a and described second electrode glass 101b, under the effect of electric field, the electronic energy that described photocathode 30 sends obtains high-energy, makes the working gas in described resistive plate room 10 ionize out electronic secondary and forms snowslide.
In some embodiments, described resistive plate room 10 also comprises sensing circuit plate 104 and electronics circuit 105, and described sensing circuit plate 104 and described electronics circuit 105 are located at described carbon film 102 away from described photocathode 30 on the surface successively.
Setting like this, described sensing circuit plate 104 can induce the electric current of the formation of electronic secondary, and the digitized processing such as induction current amplifies through described electronics circuit 105, examination, just can obtain energy and the strength information of incident ray.
In some embodiments, the shell of described resistive plate room 10 is seal box 106, sealed insulation block 107 is provided with between described seal box 106 and described first electrode glass 101a, such setting can make resistive plate room 10 be a complete hermetic cavity, the working gas leakage in resistive plate room 10 can be prevented, thus affect the serviceability of ray detector.
Dielectric film 102 is set between described carbon film 102 and described sensing circuit plate 104, such as Mylar film, described sensing circuit plate 104 can be avoided directly to contact with high pressure, prevent described sensing circuit plate 104 to be damaged.
Described detector specific works principle is: described working gas is sealed in described resistive plate room 10, and the described first electrode glass 101a in described resistive plate room 10 and described second electrode glass 101b is arranged in parallel.Described carbon film 102 and described photocathode 30 add positive or negative high voltage respectively, and under the effect of high pressure, the gas space in described detector forms a stronger electric field, and the field intensity in gas can reach 10
4more than V/cm.People is when having a physical examination, the ray sent from human tissue organ is got to the described scintillator 20 of detector, described scintillator 20 is excited to send visible ray, visible ray gets electronics on described photocathode 30, electronics accelerates to obtain sufficiently high energy under highfield effect, and electrons and gas molecule effect ionize out electronic secondary.Under the effect of electric field, the electronic secondary ionized out forms snowslide in gas, and an electrons produces 10
7-10
8individual electronic secondary, can induce electric current, the digitized processing such as induction current is amplified by described electronics circuit 105, examination in electronic secondary anode motion process, thus obtain energy and the strength information of incident ray on described sensing circuit plate 104.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " exemplary embodiment ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with described embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the present invention, those having ordinary skill in the art will appreciate that: can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present invention and aim, scope of the present invention is by claim and equivalents thereof.
Claims (4)
1. a ray detector, is characterized in that comprising resistive plate room, scintillator and photocathode, and described resistive plate room comprises the first electrode glass, and described photocathode is located on described first electrode glass; Described scintillator is located at described resistive plate outdoor.
2. ray detector as claimed in claim 1, it is characterized in that, described photocathode is located at resistive plate chamber interior, and with described first electrode glass surface contact.
3. ray detector as claimed in claim 1, it is characterized in that, described scintillator is arranged on described first electrode glass.
4. ray detector as claimed in claim 1, it is characterized in that, described resistive plate room also comprises the second electrode glass and carbon film, described resistive plate chamber interior is located at by described second electrode glass, described second electrode glass and described first electrode glass are parallel to each other, described carbon film is located on the surface of described second electrode glass away from described photocathode, described carbon film and described photocathode are added with the generating positive and negative voltage being greater than 1000V respectively, and the resistivity under described first electrode glass and described second electrode glass normal temperature is greater than 10
12Ω .cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188484.1A CN104793229B (en) | 2015-04-20 | 2015-04-20 | Ray detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510188484.1A CN104793229B (en) | 2015-04-20 | 2015-04-20 | Ray detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104793229A true CN104793229A (en) | 2015-07-22 |
| CN104793229B CN104793229B (en) | 2018-01-16 |
Family
ID=53558191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510188484.1A Active CN104793229B (en) | 2015-04-20 | 2015-04-20 | Ray detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104793229B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301625A (en) * | 2015-11-09 | 2016-02-03 | 清华大学 | Fast time response ray detector |
| CN113640851A (en) * | 2021-06-24 | 2021-11-12 | 清华大学 | Resistive plate cell detector sensitive to gamma photons |
| WO2022267105A1 (en) * | 2021-06-25 | 2022-12-29 | 中国科学技术大学 | Gas detector fabrication method, gas detector, and ray detection device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180555A (en) * | 1998-12-21 | 2000-06-30 | Hitachi Metals Ltd | Radiation detector and radiation ct device using it |
| CN103941277A (en) * | 2014-05-07 | 2014-07-23 | 清华大学 | Novel resistive plate chamber detector |
| JP2015017956A (en) * | 2013-07-12 | 2015-01-29 | 東芝電子管デバイス株式会社 | Radiation detector |
| CN104375160A (en) * | 2014-11-20 | 2015-02-25 | 常州市浩峰灯具厂 | Scintillation counter |
| CN104483699A (en) * | 2014-12-31 | 2015-04-01 | 清华大学 | Resistive board chamber detector |
| CN204731420U (en) * | 2015-04-20 | 2015-10-28 | 清华大学 | Ray detector |
-
2015
- 2015-04-20 CN CN201510188484.1A patent/CN104793229B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000180555A (en) * | 1998-12-21 | 2000-06-30 | Hitachi Metals Ltd | Radiation detector and radiation ct device using it |
| JP2015017956A (en) * | 2013-07-12 | 2015-01-29 | 東芝電子管デバイス株式会社 | Radiation detector |
| CN103941277A (en) * | 2014-05-07 | 2014-07-23 | 清华大学 | Novel resistive plate chamber detector |
| CN104375160A (en) * | 2014-11-20 | 2015-02-25 | 常州市浩峰灯具厂 | Scintillation counter |
| CN104483699A (en) * | 2014-12-31 | 2015-04-01 | 清华大学 | Resistive board chamber detector |
| CN204731420U (en) * | 2015-04-20 | 2015-10-28 | 清华大学 | Ray detector |
Non-Patent Citations (5)
| Title |
|---|
| BESIII COLLABORATION: "The construction of the BESIII experiment", 《NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A》 * |
| F. ANGHINOLFI ET AL.: "NINO: an ultra-fast and low-power front-end amplifier/discriminator ASIC designed for the multigap resistive plate chamber", 《NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A》 * |
| YI WANG ET AL.: "Production and quality control of STAR-TOF MRPC", 《NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A》 * |
| 叶瑾: ""利用宇宙线对高Z物质进行成像的技术研究"", 《中国博士学位论文全文数据库 基础科学辑》 * |
| 贾怀茂 等: ""新型气体探测器MRPC测试方法研究"", 《第十三届全国核电子学与核探测技术学术年会论文集（上册）》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105301625A (en) * | 2015-11-09 | 2016-02-03 | 清华大学 | Fast time response ray detector |
| CN113640851A (en) * | 2021-06-24 | 2021-11-12 | 清华大学 | Resistive plate cell detector sensitive to gamma photons |
| WO2022267105A1 (en) * | 2021-06-25 | 2022-12-29 | 中国科学技术大学 | Gas detector fabrication method, gas detector, and ray detection device |
| GB2621954A (en) * | 2021-06-25 | 2024-02-28 | Univ Science & Technology China | Gas detector fabrication method, gas detector, and ray detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104793229B (en) | 2018-01-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4031396A (en) | X-ray detector | |
| WO2004097886A8 (en) | X-ray tubes | |
| US4376892A (en) | Detection and imaging of the spatial distribution of visible or ultraviolet photons | |
| CN104793229A (en) | Radial detector | |
| CN107091851B (en) | Large-area X-ray gas detector | |
| CN204731420U (en) | Ray detector | |
| CN104350576A (en) | A detector for radiation, particularly high energy electromagnetic radiation | |
| CN204740348U (en) | Ray detector | |
| TW201103062A (en) | X-ray source comprising a field emission cathode | |
| Wang et al. | The design of a direct charge nuclear battery with high energy conversion efficiency | |
| CN104950323A (en) | Ray detector | |
| CZ280494B6 (en) | Apparatus for detection and localization of neutral particles | |
| CA2711869A1 (en) | X-ray generator and the use thereof in an x-ray examination device or x-ray inspection device | |
| JPS5831551B2 (en) | X-ray detector | |
| CN104749415B (en) | A kind of detector based on electron multiplier | |
| CN205176284U (en) | Fast time response X -ray detector | |
| TW200807479A (en) | Penetration ionization chamber | |
| CN214203602U (en) | X-ray source | |
| Charpak | Parallax-free, high-accuracy gaseous detectors for x-ray and vuv localization | |
| KR20030089674A (en) | Digital X-ray detector using by plasma display panel | |
| CN105301625A (en) | Fast time response ray detector | |
| KR101610158B1 (en) | X-ray detector with metal substrates | |
| KR101153390B1 (en) | A wide range radiation detector system using ion and gas scintillation | |
| CN105023626A (en) | Magnetic-separation electronic nuclear battery | |
| GB1561007A (en) | Ray detectors |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100084 Haidian District 100084-82 mailbox Beijing Applicant after: Tsinghua University Applicant after: HEBEI TIANDI WISDOM MEDICAL EQUIPMENT CO., LTD. Address before: 100084 Haidian District 100084-82 mailbox Beijing Applicant before: Tsinghua University Applicant before: The world, Hebei intelligent medical treatment equipment company limited |
|
| COR | Change of bibliographic data | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |