CN207441652U - A kind of new single channel x-ray diode detection system - Google Patents
A kind of new single channel x-ray diode detection system Download PDFInfo
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- CN207441652U CN207441652U CN201721644385.0U CN201721644385U CN207441652U CN 207441652 U CN207441652 U CN 207441652U CN 201721644385 U CN201721644385 U CN 201721644385U CN 207441652 U CN207441652 U CN 207441652U
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Abstract
The utility model provides a kind of new single channel x-ray diode detection system, and the program includes x-ray source, neutral filter, diaphragm, thin filter disc, thick filter disc, x-ray diode, signal attenuator, oscillograph, collecting computer；The X-ray that x-ray source is sent is penetrated after passing sequentially through neutral filter, diaphragm, thin filter disc, thick filter disc on the photocathode of x-ray diode；X-ray diode, signal attenuator, oscillograph, collecting computer are sequentially connected electrically；The pulse electrical signal that x-ray diode is sent is decayed to by signal attenuator in the range ability of oscillograph, and is gathered by collecting computer.The program can be used in carrying out the X-ray radiation flow measurement that flatness is high in the range of wide energy range, increase the reliability and engineering feasibility of system.
Description
Technical field
The utility model relates to X-ray field of detecting, especially a kind of new single channel x-ray diode detection system
System.
Background technology
In the prior art, Traditional x-ray diode has many advantages, such as delicate structure, using flexible, in laser inertia about
Beam nuclear fusion field is with a wide range of applications.Traditional x-ray diode mainly utilizes multiple filter and x-ray diode pair
The completely different receptance function curve of X-ray realizes the flat response characteristic to wide energy range X-ray, and x-ray diode photocathode is inhaled
Yield is improved with X-ray energy in reduction trend, and multiple filter transmitance is then in rising trend with X-ray energy raising, leads to
The two effectively cooperation is crossed, overall sensitivity is likely to occur flat response feature due to complementary relation.
Traditional x-ray diode makes multiple filter frequently with CH materials and Al materials, and coordinates two pole of Au cathode X-rays
Pipe, covering X-ray energy spectrum scope is only 100eV-1500eV, it is impossible to which measurement more sigmatron, particularly Physical Experiment are very
The golden M of concern can area with corresponding 1600eV-4000eV.In addition, obtained using multiple filter and Au cathode X-rays diode
Response curve flatness is poor, and system response fluctuation reachable 20%, significantly impacts radiant flux in 100eV-1500eV energy area
Measurement accuracy.In addition, the technology of preparing requirement of multiple filter is very high, it is difficult to realize, cost is high, and ultraviolet light can be worn
Saturating multiple filter be easy to cause multiple filter damage so that system stability is poor.Multiple filter using strip it is seamless spliced or
It is prepared by the mode of big or small ring nesting, demarcate and experimental applications in require the X-ray radiation stream in incident direction to be that space is equal
Even distribution, however, the spatially uniform of actual Calibrating source and the X-ray radiation stream of experiment measurement is extremely limited, greatly
Limit the measuring accuracy of Traditional x-ray diode.Drawbacks described above seriously limits Traditional x-ray diode in laser inertia
Constrain the application in the experiment of nuclear fusion Precise physical.
Utility model content
The purpose of this utility model, exactly in order to overcome Traditional x-ray diode system flat response energy area in prior art
It is narrow, response curve flatness is poor, multiple filter prepares the problems such as difficulty is high, stability is poor, quantitative measurment is difficult, and offer one
The technical solution of the new single channel x-ray diode detection system of kind, the program can be used in carrying out smooth in the range of wide energy range
High X-ray radiation flow measurement is spent, increases the reliability and engineering feasibility of system.
This programme is achieved by the following technical measures：
A kind of new single channel x-ray diode detection system, include x-ray source, neutral filter, diaphragm,
Thin filter disc, thick filter disc, x-ray diode, signal attenuator, oscillograph, collecting computer；The X-ray that x-ray source is sent is successively
By being penetrated after neutral filter, diaphragm, thin filter disc, thick filter disc on the photocathode of x-ray diode；X-ray diode,
Signal attenuator, oscillograph, collecting computer are sequentially connected electrically；The pulse electrical signal that x-ray diode is sent declines by signal
Subtract device to decay in the range ability of oscillograph, and gathered by collecting computer.
As the preferred of this programme：The photocathode of thin filter disc, thick filter disc and x-ray diode is prepared using wolfram element.
As the preferred of this programme：Thin filter disc and thick filter disc are Chong Die in X-ray incident direction, and diameter is identical.
As the preferred of this programme：Full array pin hole on thick filter disc, the gross area of array pin hole and the thick filter disc gross area it
Than for 1：5-1：7.
As the preferred of this programme：Array pin hole is placed on neutral filter, pin hole is at intervals of 100-150um, pin hole
Size is 20-40um.
As the preferred of this programme：X-ray source is the black chamber that X-ray can be generated by injection laser pumping.
Its basic principle of this programme is：The cavity wall of black chamber will generate X-ray, different zones after being irradiated by high power laser light
Laser power density is different, therefore X-ray radiation intensity of flow and power spectrum differ.The present apparatus uses four black chambers of channel measurement
The X-ray radiation stream of internal different zones, four passages are separately adjustable, and different passages can aim at the same area, can also aim at not
Same region can obtain four definite region internal X-ray radiant flux temporal evolution signals simultaneously, to realize to black intracavitary portion hot spot
Area, again launch site, fill plasma slab radiant flux while measure.Using on pin hole and perforate fluorescent plate in each passage
Limit hole determine the aiming area of the passage, regional scale is about 200um.The position for recording black chamber is saved using aiming at, it can be effective
System axis is adjusted.Precision is used to monitor rocking for system axis for the amesdial of 1um, can be become in system axis
Quick accurate reset is carried out during change, avoids influence of the variation of system axis to different passage aiming areas.It is adopted in different passages
X-ray is converted into visible ray with perforate fluorescent screen, and light reflection is will be seen that in CCD with plane mirror, to measure perforate
Radioscopic image around fluorescent screen upper limit hole, for determining the homing position of the passage.
The advantageous effect of this programme can be learnt according to the narration of said program, due in this scenario four-way being used to survey
Black intracavitary portion different zones are measured, black intracavitary portion facular area, again launch site, the spoke in filling plasma slab etc. regions can be obtained simultaneously
Jet stream temporal evolution signal, can be greatly improved the current stream diagnosis of driving inertial confinement fusion X-ray radiation indirectly accuracy and
Reliability.Meanwhile different passages can aim at same area, rear end uses the XRD detectors of different energy sections, as flat response XRD is visited
Device (energy area is 0.1-4.4keV) and M band XRD detectors (energy area is 1.6-4.4keV) are surveyed, the same area difference can be measured simultaneously
The X-ray radiation intensity of flow of energy band obtains shares of the region M with X-ray (energy area is 1.6-4.4keV), for studying difference
Region laser energy is converted to the influence of characteristics of the M with X-ray and M with the internal quick-fried compression asymmetry of X-ray.In addition, this
Utility model, can be straight to system axis by aiming at section when aiming area changes using the position for aiming at section record target
Capable reset is tapped into, improves system pointing stability.In addition, using amesdial to the stability of system axis in the utility model
It is monitored, when system axis shakes because of external force or other factors, quickly accurately axis can be resetted, with true
Protect the accuracy of four passage homing positions.Meanwhile using perforate fluorescent plate X-ray is converted in the utility model visible
, it can be achieved that online directly measure, the perforate imaging plate in replacement original system greatly simplifies system application difficulty, carries light
The stability that high system aims at.Black intracavitary portion different zones radiant flux temporal evolution measurement can be achieved at the same time in the utility model,
Be widely used prospect.
It can be seen that the utility model is compared with prior art, there is substantive distinguishing features and progress, the beneficial effect implemented
Fruit is also obvious.
Description of the drawings
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the structure diagram of thin filter disc and thick filter disc.
In figure, 1 is black chamber, and 2 be neutral filter, and 3 be diaphragm, and 4 be thin filter disc, and 5 be thick filter disc, and 6 be X-ray two
Pole pipe, 7 be signal attenuator, and 8 be oscillograph, and 9 be collecting computer, and 10 be pin hole.
Specific embodiment
All features or disclosed all methods disclosed in this specification or in the process the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.I.e., unless specifically stated, each feature
It is an example in a series of equivalent or similar characteristics.
As shown in the figure, include x-ray source, neutral filter, diaphragm, thin filter disc, thick filter disc, x-ray diode,
Signal attenuator, oscillograph, collecting computer；The X-ray that x-ray source is sent passes sequentially through neutral filter, diaphragm, thin
It is penetrated after filter disc, thick filter disc on the photocathode of x-ray diode；X-ray diode, signal attenuator, oscillograph, acquisition calculate
Machine is sequentially connected electrically；The pulse electrical signal that x-ray diode is sent decays to the range ability of oscillograph by signal attenuator
It is interior, and gathered by collecting computer.The photocathode of thin filter disc, thick filter disc and x-ray diode is prepared using wolfram element.Thin filter
Piece and thick filter disc are Chong Die in X-ray incident direction, and diameter is identical.Full array pin hole, the gross area of array pin hole on thick filter disc
It is 1 with the ratio between the thick filter disc gross area：5-1：7.Array pin hole is placed on neutral filter, pin hole is at intervals of 100-150um, pin
Pore size is 20-40um.X-ray source is the black chamber that X-ray can be generated by injection laser pumping.
In the utility model, weight distribution is carried out to incident X-ray using filter disc is combined, to be produced to wide energy range X-ray
Life response characteristic.It is assumed that combination filter disc is made of two kinds of materials, one of which transmitance is μ 1 (E), thickness d1；Other one
Kind transmitance is μ 2 (E), and thickness d2, x-ray diode photocathode respon function is S (E), then can must combine filter disc+XRD's
Whole Response function R (E)：
Wherein α accounts for the share of the gross area, i.e. α=S for central filter disc1/(S1+S2).Definition
WhereinThe purpose of design of flat response x-ray diode measuring system be by Optimal Parameters,
So that σ is minimum.
Embodiment 2
The present embodiment is identical with the structure of embodiment 1, except that the thickness of the thin filter disc is 50nm, thickness filter
The thickness of piece is 370nm.A diameter of 12mm of the thin filter disc and thick filter disc.Total face of the thick filter on-chip array pin hole
The ratio between product and the thick filter disc gross area are 1：5.The pin hole of pinhole array is at intervals of 150um, pin hole ruler on the neutral filter
Very little is 30um.The neutral filter and the center spacing of diaphragm are 1000mm.
All features or disclosed all methods disclosed in this specification or in the process the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, summary and attached drawing), except non-specifically chatting
It states, can be replaced by other alternative features that are equivalent or have similar purpose.I.e., unless specifically stated, each feature
It is an example in a series of equivalent or similar characteristics.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this reality
With new principle, it should be understood that the scope of protection of the utility model is not limited to such special statement and embodiment.
Those of ordinary skill in the art can these technical inspirations according to disclosed in the utility model make and various not taking off
Other various specific deformations and combination from the utility model in essence, these deformations and combination are still in the protection of the utility model
In the range of.
Claims (6)
1. a kind of new single channel x-ray diode detection system, it is characterized in that：Include x-ray source, neutral filter, limit
Hole diaphragm, thin filter disc, thick filter disc, x-ray diode, signal attenuator, oscillograph, collecting computer；The x-ray source is sent
X-ray pass sequentially through neutral filter, diaphragm, thin filter disc, thick filter disc after penetrate on the photocathode of x-ray diode；
The x-ray diode, signal attenuator, oscillograph, collecting computer are sequentially connected electrically；What the x-ray diode was sent
Pulse electrical signal is decayed to by signal attenuator in the range ability of oscillograph, and is gathered by collecting computer.
2. a kind of new single channel x-ray diode detection system according to claim 1, it is characterized in that：The thin filter
The photocathode of piece, thick filter disc and x-ray diode is prepared using wolfram element.
3. a kind of new single channel x-ray diode detection system according to claim 1, it is characterized in that：The thin filter
Piece and thick filter disc are Chong Die in X-ray incident direction, and diameter is identical.
4. a kind of new single channel x-ray diode detection system according to claim 1, it is characterized in that：The thick filter
On piece expires array pin hole, and the ratio between the gross area of array pin hole and the thick filter disc gross area are 1：5-1：7.
5. a kind of new single channel x-ray diode detection system according to claim 1, it is characterized in that：The neutrality
Array pin hole is placed on attenuator, for pin hole at intervals of 100-150 um, pinhole size is 20-40 um.
6. a kind of new single channel x-ray diode detection system according to claim 1, it is characterized in that：The X-ray
Source is the black chamber that X-ray can be generated by injection laser pumping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644385.0U CN207441652U (en) | 2017-11-30 | 2017-11-30 | A kind of new single channel x-ray diode detection system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721644385.0U CN207441652U (en) | 2017-11-30 | 2017-11-30 | A kind of new single channel x-ray diode detection system |
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| CN207441652U true CN207441652U (en) | 2018-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655512A (en) * | 2021-06-29 | 2021-11-16 | 中国工程物理研究院激光聚变研究中心 | Method for measuring symmetry of X-ray radiation in black cavity M-band |
-
2017
- 2017-11-30 CN CN201721644385.0U patent/CN207441652U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113655512A (en) * | 2021-06-29 | 2021-11-16 | 中国工程物理研究院激光聚变研究中心 | Method for measuring symmetry of X-ray radiation in black cavity M-band |
| CN113655512B (en) * | 2021-06-29 | 2024-05-07 | 中国工程物理研究院激光聚变研究中心 | Method for measuring symmetry of X-ray radiation of black cavity M band |
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