CN208443763U - A kind of laser plasma X-ray CT imaging device - Google Patents
A kind of laser plasma X-ray CT imaging device Download PDFInfo
- Publication number
- CN208443763U CN208443763U CN201820755023.7U CN201820755023U CN208443763U CN 208443763 U CN208443763 U CN 208443763U CN 201820755023 U CN201820755023 U CN 201820755023U CN 208443763 U CN208443763 U CN 208443763U
- Authority
- CN
- China
- Prior art keywords
- laser
- ray
- sheet metal
- target
- plasma
- 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 - Fee Related
Links
Landscapes
- X-Ray Techniques (AREA)
Abstract
The utility model provides a kind of laser plasma X-ray CT imaging device, multiple x-ray radiation sources are generated using multiple sub- each sheet metals of laser irradiation, multiple x-ray radiation sources carry out backlight photography to the laser plasma that laser target generates along different directions, realize the CT-3D Reconstruction to laser plasma；CT image device structure of the invention is simple, and the requirement to recording equipment reduces.
Description
Technical field
The utility model belong to laser plasma diagnosis field more particularly to a kind of laser plasma X-ray CT at
As device.
Background technique
Laser plasma is a kind of state of matter generated when light laser and material interact, passes through x-ray imaging
Electron density, temperature inside laser plasma can be measured, be provided for laser plasma diagnosis experiment important
Information.However existing laser plasma imaging device can only obtain the single image of laser plasma, it cannot be to laser
The spatial distribution of plasma density measures, and can not effectively grasp the evolution-information inside laser plasma.
Summary of the invention
To solve the above problems, the utility model provides a kind of laser plasma X-ray CT imaging device, can be realized
To the CT-3D Reconstruction of laser plasma.
A kind of laser plasma X-ray CT imaging device, including laser target 9, synchronous generator 17, laser
22, the sheet metal of spectral module 25, processor, multiple X-ray cameras and three pieces or more, wherein the quantity of X-ray camera with
The quantity of sheet metal is identical, and the quantity of sheet metal is indicated with N；
The sheet metal is arranged on the different directions of laser target 9, and the normal intersection point of each sheet metal is arranged in laser target 9
Place, while each sheet metal is identical at a distance from laser target 9；
The X-ray camera is separately positioned on each sheet metal to the extended line of 9 line of laser target；
The laser that the synchronous generator 17 is used to be emitted according to laser 22 generates N number of trigger signal, wherein institute
It states trigger signal and is respectively used to triggering X-ray camera unlatching shutter；
After the spectral module 25 is used to for the laser that laser 22 is emitted to be divided into N+1 sub- laser, N+1 sub- laser point
It Fu Zhao not be on each sheet metal and laser target 9；
The processor is used to obtain metallic target 9 according to the Plasma picture of the collected metallic target 9 of each X-ray camera
Laser plasma three-dimensional CT image.
Further, a kind of laser plasma X-ray CT imaging device further includes light path module 23；
The light path module 23 is used to carry out optical path compensations to the sub- laser of N+1, so that N+1 sub- laser irradiations are to each gold
It is identical as the time of laser target 9 to belong to piece.
Further, the sheet metal 5,6,7 is three pieces, and three pieces of sheet metals 5, and 6,7 is mutually orthogonal.
Further, a kind of laser plasma X-ray CT imaging device, further includes three orthogonal crossbeams 2, and 3,4, and
Three pieces of sheet metals 5,6,7 are separately mounted on each crossbeam, and metallic target 9 is mounted on the intersection point of three crossbeams 2,3,4.
Further, a kind of laser plasma X-ray CT imaging device further includes being used to support three crossbeams 2,3,4
Strut 1.
Further, a kind of laser plasma X-ray CT imaging device further includes wire 8；
Metallic target 9 for being supported on the intersection point of three crossbeams 2,3,4 by the wire 8.
The utility model has the advantages that
1, the utility model provides a kind of laser plasma X-ray CT imaging device, each using multiple sub- laser irradiations
Sheet metal generates multiple x-ray radiation sources, the laser plasma that multiple x-ray radiation sources generate laser target along different directions
Body carries out backlight photography, realizes the CT-3D Reconstruction to laser plasma；The CT image device structure of the utility model is simple,
Requirement to recording equipment reduces.
2, the utility model realizes the optical path compensation of multiple sub- laser by light path module, this synchronous based on laser technology
Method make N+1 sub- laser irradiations identical as the time of laser target to each sheet metal, so that X-ray camera can obtain together
The laser plasma backlight radioscopic image at one moment, and then realize the CT-3D Reconstruction to laser plasma.
Detailed description of the invention
Fig. 1 is a kind of laser plasma X-ray CT imaging device schematic diagram provided by the utility model；
Fig. 2 is light path module provided by the utility model and spectral module schematic diagram；
1- strut, 2- first crossbeam, 3- second cross beam, 4- third crossbeam, the second sheet metal of 5- the first sheet metal 6-, 7-
Three sheet metals, 8- wire, 9- laser target, the first X-ray camera of 10-, the second X-ray camera of 11-, 12- third X-ray phase
Machine, the sub- laser of 13- first, the sub- laser of 14- second, the sub- laser of 15- third, the sub- laser of 16- the 4th, 17- synchronous generator,
18- synchronization signal, the first trigger signal of 19-, the second trigger signal of 20-, 21- third trigger signal, 22- laser, 23- optical path
Module, 24- laser, 25- spectral module.
Specific embodiment
In order to make those skilled in the art more fully understand application scheme, below in conjunction in the embodiment of the present application
Attached drawing, the technical scheme in the embodiment of the application is clearly and completely described.
Embodiment one
A kind of laser plasma X-ray CT imaging device, including laser target 9, synchronous generator 17, laser
22, the sheet metal of light path module 23, spectral module 25, multiple X-ray cameras and three pieces or more, wherein the number of X-ray camera
Amount is identical as the quantity of sheet metal, and the quantity of sheet metal is indicated with N；
The sheet metal is arranged on the different directions of laser target 9, and the normal intersection point of each sheet metal is arranged in laser target 9
Place, while each sheet metal is identical at a distance from laser target 9；
The X-ray camera is separately positioned on each sheet metal to the extended line of 9 line of laser target；
The laser that the synchronous generator 17 is used to be emitted according to laser 22 generates N number of trigger signal, wherein institute
It states trigger signal and is respectively used to triggering X-ray camera unlatching shutter；
After the spectral module 25 is used to for the laser that laser 22 is emitted to be divided into N+1 sub- laser, N+1 sub- laser point
It Fu Zhao not be on each sheet metal and laser target 9；
The processor is used to obtain metallic target 9 according to the Plasma picture of the collected metallic target 9 of each X-ray camera
Laser plasma three-dimensional CT image.
Further, light path module 23 is used to carry out optical path compensation to N+1 sub- laser, so that N+1 sub- laser irradiations
It is identical as the time of laser target 9 to each sheet metal.
Optionally, the laser target 9 is spherical structure, and sheet metal is square structure.
The working principle of the present embodiment are as follows:
While laser exports N+1 sub- laser beams, generates a synchronization signal 18 and enter synchronous generator
17, before sub- laser reaches laser target 9, synchronous generator 17 triggers each X-ray camera by N number of trigger signal, and X is penetrated
Shutter is opened after the triggering of line camera, closes shutter after sub- laser irradiation.In the exposure period of X-ray camera
Interior, sub- laser beam irradiates each sheet metal and metallic target 9, so that it may record the transient state X-ray of laser plasma multiple directions
Image.
Embodiment two
Below by taking N=3 as an example, the present embodiment carries out furtherly a kind of laser plasma X-ray CT imaging device
It is bright.
Referring to Fig. 1, which is a kind of laser plasma X-ray CT imaging device schematic diagram provided in this embodiment.One
Kind laser plasma X-ray CT imaging device, including strut 1, first crossbeam 2, second cross beam 3, third crossbeam 4, the first gold medal
Belong to piece 5, the second sheet metal 6, third sheet metal 7, wire 8, the first X-ray camera 10, the second X-ray camera 11 and third
X-ray camera 12, synchronous generator 17, laser 22, light path module 23, spectral module 25；
First crossbeam 2, second cross beam 3 and third crossbeam 4 are mutually orthogonal, and the first sheet metal 5, the second sheet metal 6 with
And third sheet metal 7 is separately mounted on each crossbeam, metallic target 9 is mounted on the intersection point of three crossbeams, while each sheet metal and swashing
The distance of light target 9 is identical.That is, the first sheet metal 5, the second sheet metal 6 and third sheet metal 7 are also mutually orthogonal.Gold
Belong to the intersection point that silk 8 is used to for metallic target 9 being supported on three crossbeams.Strut 1 is used for three cross beam supports in optical platform,
Be conducive to the progress of laser plasma X-ray CT imaging experiment.
First X-ray camera 10 is arranged on the first sheet metal 5 to the extended line of 9 line of laser target, the second X-ray camera
11 are arranged on the second sheet metal 6 to the extended line of 9 line of laser target, and the setting of third X-ray camera 12 is arrived in third sheet metal 7
On the extended line of 9 line of laser target.That is, the center of the first sheet metal 5,9 center of laser target and the first X-ray camera
11 central coaxial；The central coaxial at the center of the second sheet metal 6,9 center of laser target and the second X-ray camera 10；Third
The central coaxial at the center of sheet metal 7,9 center of laser target and third X-ray camera 12.
The synchronous generator 17 is used for the laser being emitted according to laser 22, i.e. synchronization signal 18 generates 3 touchings
It signals, i.e. the first trigger signal 19, the second trigger signal 20, third trigger signal 21, wherein the trigger signal is used respectively
Shutter is opened in triggering X-ray camera.
Referring to fig. 2, which is light path module provided in this embodiment and spectral module schematic diagram.The spectral module 25 is used
After the laser for being emitted laser 22 is divided into 4 sub- laser, i.e., the first sub- laser 13, the second sub- laser 14, the sub- laser of third
15, the 4th sub- laser 16,4 sub- laser are irradiated respectively onto three pieces of sheet metals and laser target 9.
Further, light path module 23 is used to carry out optical path compensation to 4 sub- laser, so that 4 sub- laser irradiations are to respectively
Sheet metal is identical as the time of laser target 9.
The present embodiment can carry out several transient state roentgenograms to it from several directions in the laser plasma duration
Phase is realized and is rebuild to the CT of laser plasma.
Embodiment three
Based on above embodiments, the present embodiment provides a kind of laser plasma X-ray CT imaging methods, including with
Lower step:
S1: three pieces or more of sheet metal being separately positioned on the different directions of laser target 9, and laser target 9 is arranged each
The extended line of the normal point of intersection of sheet metal, every piece of sheet metal and 9 line of laser target is equipped with an X-ray camera, while each
Sheet metal is identical at a distance from laser target 9, and the quantity of sheet metal is indicated with N；
S2: after the laser that laser 22 is emitted is divided into N+1 sub- laser, then N+1 sub- laser is irradiated respectively and are arrived respectively
On sheet metal and laser target 9, so that sheet metal generates X-ray, laser target 9 generates laser plasma；
S3: N number of trigger signal is generated according to the laser that laser 22 is emitted, wherein the trigger signal is respectively used to touch
It sends out X-ray camera and opens shutter, and irradiated respectively earlier than sub- laser to each gold at the time of X-ray camera unlatching shutter
At the time of category on piece and laser target 9, the time for exposure is longer than the duration of the laser plasma of the generation of laser target 9；
S4: it using default modeling algorithm, is obtained according to the Plasma picture of the collected metallic target 9 of each X-ray camera
The three-dimensional CT image of the laser plasma of metallic target 9.
It should be noted that the default modeling algorithm be algebraic reconstruction algorithm, joint algebra iterative reconstruction algorithm or
Order subset desired value maximum algorithm for reconstructing.
Further, in order to keep the magnifying power of the Plasma picture of the collected metallic target 9 of each X-ray camera identical,
The present embodiment carries out optical path compensation after the laser for being emitted laser 22 is divided into N+1 sub- laser, then to N+1 sub- laser,
So that N+1 sub- laser irradiations are identical as the time of laser target 9 to each sheet metal.
It is noted that the method that existing control X-ray camera is synchronous, to control X-ray phase using the method for electronics
The shutter of machine, but as the difference between the communications cable, inherently shake and the response of X-ray camera itself present in circuit
Delay, it is difficult to the opening time difference of the shutter of multiple X-ray cameras is controlled in nanosecond order, and laser plasma is usual
Duration is extremely short, only several nanoseconds.Therefore, control X-ray camera is gone simultaneously using existing camera synchronous method
Shutter is opened, and then completes the shooting of laser plasma, often misses laser plasma, or what is completed is not same
The radioscopic image of transient state moment laser plasma transmitting.Therefore, the present embodiment is using light path module 23 to N+1 sub- laser
Optical path compensation is carried out, so that each sheet metal generates X-ray simultaneously under the irradiation of sub- laser, at the same time, laser target 9 is another
Laser plasma is generated under the irradiation of a sub- laser, so as to obtain the X of same transient state moment laser plasma transmitting
Ray image, and then using default modeling algorithm, obtain the three-dimensional CT image of the laser plasma at same transient state moment.
Certainly, the utility model can also have other various embodiments, without departing substantially from the spirit of the present invention and its essence
In the case of, those skilled in the art can make various corresponding changes and modifications, but this according to the utility model certainly
A little corresponding changes and modifications all should belong to the protection scope of the utility model the attached claims.
Claims (6)
1. a kind of laser plasma X-ray CT imaging device, which is characterized in that including laser target (9), synchronous generator
(17), the sheet metal of laser (22), spectral module (25), processor, multiple X-ray cameras and three pieces or more, wherein X
The quantity of ray camera and the quantity of sheet metal are identical, and the quantity of sheet metal is indicated with N；
The sheet metal is arranged on the different directions of laser target (9), and the normal intersection point of each sheet metal is arranged in laser target (9)
Place, while each sheet metal is identical at a distance from laser target (9)；
The X-ray camera is separately positioned on each sheet metal to the extended line of laser target (9) line；
The laser that the synchronous generator (17) is used to be emitted according to laser (22) generates N number of trigger signal, wherein institute
It states trigger signal and is respectively used to triggering X-ray camera unlatching shutter；
After the spectral module (25) is used to for the laser that laser (22) are emitted to be divided into N+1 sub- laser, N+1 sub- laser point
It Fu Zhao not arrive on each sheet metal and laser target (9)；
The processor is used to obtain metallic target (9) according to the Plasma picture of the collected metallic target of each X-ray camera (9)
Laser plasma three-dimensional CT image.
2. a kind of laser plasma X-ray CT imaging device as described in claim 1, which is characterized in that further include optical path
Module (23)；
The light path module (23) is used to carry out optical path compensations to the sub- laser of N+1, so that N+1 sub- laser irradiations are to each metal
Piece is identical as the time of laser target (9).
3. a kind of laser plasma X-ray CT imaging device as described in claim 1, which is characterized in that the sheet metal
It (5,6,7) is three pieces, and three pieces of sheet metals (5,6,7) are mutually orthogonal.
4. a kind of laser plasma X-ray CT imaging device as claimed in claim 3, which is characterized in that further include three
Orthogonal crossbeam (2,3,4), and three pieces of sheet metals (5,6,7) are separately mounted on each crossbeam, metallic target (9) is mounted on three cross
The intersection point of beam (2,3,4).
5. a kind of laser plasma X-ray CT imaging device as claimed in claim 4, which is characterized in that further include being used for
Support the strut (1) of three crossbeams (2,3,4).
6. a kind of laser plasma X-ray CT imaging device as claimed in claim 4, which is characterized in that further include metal
Silk (8)；
Metallic target (9) for being supported on the intersection point of three crossbeams (2,3,4) by the wire (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820755023.7U CN208443763U (en) | 2018-05-21 | 2018-05-21 | A kind of laser plasma X-ray CT imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820755023.7U CN208443763U (en) | 2018-05-21 | 2018-05-21 | A kind of laser plasma X-ray CT imaging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208443763U true CN208443763U (en) | 2019-01-29 |
Family
ID=65091027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820755023.7U Expired - Fee Related CN208443763U (en) | 2018-05-21 | 2018-05-21 | A kind of laser plasma X-ray CT imaging device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208443763U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362717A (en) * | 2018-05-21 | 2018-08-03 | 中国工程物理研究院激光聚变研究中心 | A kind of laser plasma X-ray CT imaging devices and method |
| CN113030134A (en) * | 2021-02-26 | 2021-06-25 | 中国工程物理研究院激光聚变研究中心 | Three-axis CT imaging device and method for ICF target three-dimensional reconstruction |
-
2018
- 2018-05-21 CN CN201820755023.7U patent/CN208443763U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362717A (en) * | 2018-05-21 | 2018-08-03 | 中国工程物理研究院激光聚变研究中心 | A kind of laser plasma X-ray CT imaging devices and method |
| CN113030134A (en) * | 2021-02-26 | 2021-06-25 | 中国工程物理研究院激光聚变研究中心 | Three-axis CT imaging device and method for ICF target three-dimensional reconstruction |
| CN113030134B (en) * | 2021-02-26 | 2022-03-01 | 中国工程物理研究院激光聚变研究中心 | Three-axis CT imaging device and method for ICF target three-dimensional reconstruction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hopps et al. | Comprehensive description of the Orion laser facility | |
| CN208443763U (en) | A kind of laser plasma X-ray CT imaging device | |
| CN103077875B (en) | A kind of high current little focal spot long-life vacuum diode | |
| CN104617482A (en) | Laser micro-focus plasma K alpha radiation source | |
| Bussolino et al. | Electron radiography using a table-top laser-cluster plasma accelerator | |
| Tian et al. | Radiography of direct drive double shell targets with hard x-rays generated by a short pulse laser | |
| Schollmeier et al. | A 7.2 keV spherical x-ray crystal backlighter for two-frame, two-color backlighting at Sandia’s Z Pulsed Power Facility | |
| Simpson et al. | Demonstration of TNSA proton radiography on the national ignition facility advanced radiographic capability (NIF-ARC) laser | |
| Cole et al. | Tomography of human trabecular bone with a laser-wakefield driven x-ray source | |
| CN108362717A (en) | A kind of laser plasma X-ray CT imaging devices and method | |
| CN204391491U (en) | A kind of laser Microfocus X-ray plasma K αradiographic source | |
| Sambruna et al. | The XMM-Newton view of the X-ray halo and jet of NGC 6251 | |
| CN106198581B (en) | Ultrashort X-ray double-angle double-color backlight photographing system based on laser-driven solid target | |
| Rai et al. | Focusing mirrors for enhanced neutron radiography with thermal neutrons and application for irradiated nuclear fuel | |
| Bisesto et al. | Innovative single-shot diagnostics for electrons accelerated through laser-plasma interaction at FLAME | |
| Wilson et al. | Modeling the National Ignition Facility neutron imaging system | |
| Miquel | LMJ & PETAL Status and first experiments | |
| Jiang et al. | Research of shaped pulse driven hohlraum asymmetry by 2D x-ray radiography | |
| Wu et al. | Calibration and test of CsI scintillator ion detection system for tokamak magnetic field diagnosis based on laser-driven ion-beam trace probe (LITP) | |
| Scarpine et al. | Optical transition radiation imaging of intense proton beams at FNAL | |
| Cools et al. | X-ray imaging with Micromegas detectors with optical readout | |
| Shi et al. | Sub-millimeter hard x-ray source based on wire-shorted low-impedance rod pinch diode | |
| Schillaci et al. | The ELIMAIA Laser–Plasma Ion Accelerator: Technological Commissioning and Perspectives. Quantum Beam Sci. 2022, 6, 30 | |
| Matsuoka et al. | Synchrotron x-ray radiation from laser wakefield accelerated electron beams in a plasma channel | |
| Lemieux et al. | Testing of a gamma ray imaging system at the High Intensity Gamma Source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190129 Termination date: 20200521 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |