CN2831348Y - High performance time pick-up device - Google Patents
High performance time pick-up device Download PDFInfo
- Publication number
- CN2831348Y CN2831348Y CNU2005200793832U CN200520079383U CN2831348Y CN 2831348 Y CN2831348 Y CN 2831348Y CN U2005200793832 U CNU2005200793832 U CN U2005200793832U CN 200520079383 U CN200520079383 U CN 200520079383U CN 2831348 Y CN2831348 Y CN 2831348Y
- Authority
- CN
- China
- Prior art keywords
- light reflecting
- performance time
- reflecting cavity
- ellipsoid
- picking device
- 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.)
- Expired - Lifetime
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Measurement Of Radiation (AREA)
Abstract
The utility model mainly relates to a structure of a high-performance time picking device used for nuclear physics experiments. The high-performance time picking device comprises a casing (1), wherein the casing (1) is provided with a hole (11) which is connected with a beam current pipeline. The utility model is mainly characterized in that the high-performance time picking device also comprises a light reflecting cavity (12) which is arranged in the casing (1), and the surface of the light reflecting cavity (12) is an ellipsoidal surface; a vertical axis of the light reflecting cavity (12) of which the surface is the ellipsoidal surface is provided with a plastic flicker film (2) of which the center is overlapped with an upper focal point (A) of the light reflecting cavity (12) of which the surface is the ellipsoidal surface, a central line of the hole (11) on the casing (1) penetrates through the upper focal point (A) of the light reflecting cavity of which the surface is the ellipsoidal surface, and a receiving surface of a photoelectric multiplier (4) is arranged in the position of a lower focal point (B) of the light reflecting cavity of which the surface is the ellipsoidal surface. The utility model has the advantages of capability of high time resolution, capability of high count rate, low detection threshold and resistance to irradiation; the detection efficiency of intermediate secondary beams reaches over 90 percent, and the time resolution is 140 ps; the high-performance time picking device can also work normally under the irradiation with the ionic strength of about 10< 8 > ions per second and has the characteristics of simple structure, stable performance, low cost and convenient operation; the high-performance time picking device is an ideal time detector for intermediate heavy ion experiments.
Description
Technical field:
The utility model relates generally to a kind of structure that is used for the high performance time pick device of nuclear physics experiment.
Background technology:
Radioactivity bundle physics is one of three big fields, forward position of current nuclear physics research.Can produce the radioactivity line by the method that plays karyorrhexis, isolate the needed a kind of line of experiment in the multiple radioactivity line that produces, need carry out particle discriminating, separation and purifying, the flight time method is exactly wherein a kind of important detection means.The time pick device designed for the flight time of measuring particle.
The time pick device of prior art, poor performance.
The utility model content:
The purpose of this utility model is to avoid the deficiencies in the prior art part and a kind of high-performance time pick device is provided.
The purpose of this utility model can be by realizing by the following technical solutions: a kind of high-performance time pick device, include housing (1), housing (1) is provided with the hole (11) that is connected with the line pipeline, its principal feature is also to include to be provided with the surperficial light reflecting chamber (12) of ellipsoid that is in housing (1), the center of plastics flicker films (2) overlaps with the last focus (A) of the light reflecting chamber (12) of ellipsoid, and the center line in the hole (11) on the housing (1) passes the last focus (A) of the light reflecting chamber (12) of ellipsoid; Locate to be provided with the receiving plane of photomultiplier (4) in the following focus (B) of the light reflecting chamber (12) of ellipsoid.
The plastics flicker films (2) of described high-performance time pick device are connected on the support (3).Described photomultiplier (4) is fixed on the housing (1) by fixed cover (5).The flicker film thickness can be selected by ionic type and energy, makes performance the best.
The surface smoothness of the light reflecting chamber (12) of described ellipsoid is a minute surface.
The voltage divider that photomultiplier (4) adopts is the conventional instrument by the time type design.When the line ion vertically passes plastics flickers films (2), cause that the flicker film is luminous, the photon in that the last focus (A) of the light reflecting chamber (12) of ellipsoid is located to produce after the ellipsoid primary event, all is focused on down focus (B) and locates the zone.Can use the little photomultiplier of photocathode area (4), reduce dark current, lower background, improve collection efficiency and reduce threshold of detectability.Through all photons of light reflecting chamber (12) the ellipsoid primary event of ellipsoid, path equates.The photon time discrete that arrives photomultiplier (4) photocathode like this is little, the time resolution height.Photon be focused on photomultiplier (4) photocathode center and near zonule very, by the photoelectron that they produce on photocathode, get over to the anode time discrete for a short time, improve and the relevant time resolution in photomultiplier (4) photocathode position.
The beneficial effects of the utility model are to have high time resolution, high count rate ability, low threshold of detectability, anti-irradiation.Its detection efficiency can secondary beam reach more than 90% for middle, and time resolution is 140ps ,～10
8Under individual/second ionic strength irradiation, still can operate as normal.It simple in structure, stable performance, cheap, operation easily, be middle can the heavy ion experiment in desirable time detector.
Description of drawings:
Be described in further detail below in conjunction with the most preferred embodiment shown in the accompanying drawing:
Fig. 1 is the front view of the utility model embodiment.
Embodiment:
See Fig. 1, high-performance time pick device, housing 1 is arranged, housing 1 is provided with the hole 11 that is connected with the line pipeline, in housing 1, be provided with the surface and be the light reflecting chamber 12 of ellipsoid, be provided with plastics flicker film 2 on the vertical axis of the light reflecting chamber 12 of ellipsoid, the center of plastics flicker film 2 overlaps with the last focus A of the light reflecting chamber 12 of ellipsoid, and the center line in the hole 11 on the housing 1 passes the last focus A of the light reflecting chamber 12 of ellipsoid; Be provided with the receiving plane of photomultiplier 4 at the following focus B place of the light reflecting chamber 12 of ellipsoid.Plastics flicker film 2 is connected on the support 3.Photomultiplier 4 is fixed on the housing 1 by fixed cover 5.The surface smoothness of the light reflecting chamber 12 of ellipsoid is a minute surface.
During use, the hole on the housing 1 11 is connected with the line pipeline.
Claims (4)
1. high-performance time pick device, include housing (1), housing (1) is provided with the hole (11) that is connected with the line pipeline, it is characterized in that also including and in housing (1), be provided with the surperficial light reflecting chamber (12) of ellipsoid that is, on the vertical axis of the light reflecting chamber (12) of ellipsoid, be provided with plastics flicker film (2), the center of plastics flicker films (2) overlaps with the last focus (A) of the light reflecting chamber (12) of ellipsoid, and the center line in the hole (11) on the housing (1) passes the last focus (A) of the light reflecting chamber (12) of ellipsoid; Locate to be provided with the receiving plane of photomultiplier (4) in the following focus (B) of the light reflecting chamber (12) of ellipsoid.
2. high-performance time pick device as claimed in claim 1 is characterized in that described plastics flicker films (2) are connected on the support (3).
3. high-performance time pick device as claimed in claim 1 or 2 is characterized in that described photomultiplier (4) is fixed on the housing (1) by fixed cover (5).
4. high-performance time pick device as claimed in claim 3 is characterized in that the surface smoothness of the light reflecting chamber (12) of described ellipsoid is a minute surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200793832U CN2831348Y (en) | 2005-09-07 | 2005-09-07 | High performance time pick-up device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200793832U CN2831348Y (en) | 2005-09-07 | 2005-09-07 | High performance time pick-up device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2831348Y true CN2831348Y (en) | 2006-10-25 |
Family
ID=37136275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200793832U Expired - Lifetime CN2831348Y (en) | 2005-09-07 | 2005-09-07 | High performance time pick-up device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2831348Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016036956A1 (en) * | 2014-09-03 | 2016-03-10 | Cooper Technologies Company | Optical gas sensor |
| CN109116402A (en) * | 2018-05-29 | 2019-01-01 | 西南大学 | A kind of novel ellipsoid focus type mirror image plastic scintillant flight time detector |
| CN113156485A (en) * | 2021-04-20 | 2021-07-23 | 中国科学院近代物理研究所 | Detector for weak particle beam on-line monitoring |
-
2005
- 2005-09-07 CN CNU2005200793832U patent/CN2831348Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016036956A1 (en) * | 2014-09-03 | 2016-03-10 | Cooper Technologies Company | Optical gas sensor |
| US9976991B2 (en) | 2014-09-03 | 2018-05-22 | Cooper Technologies Company | Optical gas sensor |
| CN109116402A (en) * | 2018-05-29 | 2019-01-01 | 西南大学 | A kind of novel ellipsoid focus type mirror image plastic scintillant flight time detector |
| CN113156485A (en) * | 2021-04-20 | 2021-07-23 | 中国科学院近代物理研究所 | Detector for weak particle beam on-line monitoring |
| CN113156485B (en) * | 2021-04-20 | 2022-10-04 | 中国科学院近代物理研究所 | Detector for weak particle beam on-line monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150907 Granted publication date: 20061025 |
|
| EXPY | Termination of patent right or utility model |