CN207352180U - A kind of compact beam spot detector module - Google Patents
A kind of compact beam spot detector module Download PDFInfo
- Publication number
- CN207352180U CN207352180U CN201721381198.8U CN201721381198U CN207352180U CN 207352180 U CN207352180 U CN 207352180U CN 201721381198 U CN201721381198 U CN 201721381198U CN 207352180 U CN207352180 U CN 207352180U
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- Prior art keywords
- vacuum tube
- attenuator
- beam spot
- detector module
- spot detector
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Abstract
The utility model belongs to proton beam testing equipment field, and discloses a kind of compact beam spot detector module, including driving mechanism, cross vacuum tube, target chamber and imaging system, and the driving mechanism includes cylinder body and piston rod；The cross vacuum tube includes intersecting horizontal vacuum pipe and vertical vacuum tube, and the top and bottom of the vertical vacuum tube are respectively arranged with upper flange and lower flange；The target chamber includes backboard, quoit and target piece；The imaging system includes attenuator, tight shot and the CCD camera to link together and they set gradually from top to bottom, and the attenuator is installed on the lower flange, and the lower flange is provided with vacuum window in the position corresponding to the attenuator；The piston rod, vertical vacuum tube and the tight shot are coaxially disposed.The utility model can reduce beam spot detector module size and flange size accordingly, so as to obtain optimal longitudinally mounted size according to the size of required target chamber and the size of driving mechanism.
Description
Technical field
The utility model belongs to proton beam testing equipment field, more particularly, to a kind of compact beam spot detector
Component.
Background technology
Beam spot shape and line lateral cross-sectional dimension are one of basic beam parameters of all kinds of accelerators, are other horizontal strokes of measurement
To the basis of parameter.Most common measurement means have based on optical, based on secondary electron, based on ionisation chamber.Wherein, base
In optical and including based on fluorescent target and based on two kinds of synchronizable optical.Measuring method based on synchronizable optical only accelerates in electronic circular
Device or bending section use, and the measuring method based on scintillation screen can be applied in linear accelerator, bending section, transit, storage
Ring.Measuring device based on scintillation screen is also beam spot detector, is one of most widely used beam diagnostics means, in all kinds of machines
Device debugs initial stage, and fluorescent target almost uniquely adjusts in a helpless situation section.
Beam spot detector includes three parts：With the appearance of compact accelerator, the longitudinally mounted of beam diagnostics is left for
Space is very limited, therefore the longitudinally mounted size of beam diagnostics equipment and peripheral installation dimension are as far as possible small.One beam spot inspection
Device is surveyed mainly by target chamber and driving mechanism, imaging system and image capturing system.The position of driving mechanism and imaging system determines
The size of beam spot detector.The layout of driving mechanism and imaging system has two ways at present, the first layout is to drive
Mechanism and imaging system are installed in the top of vertical vacuum tube.This results in two problems, (1) driving mechanism is made when moving
Into the vibration of beam spot detector module；(2) the longitudinally mounted size of structure is larger, especially longitudinally pacifies when the size of target piece is larger
It is bigger to fill size.Second of layout is that driving mechanism is installed on to the top of vertical vacuum tube, and imaging system is installed on
In optics mirrored cabinet, hot spot reaches imaging system by two speculums.Since imaging system and driving mechanism are not together, such
The longitudinally mounted size of type is smaller.But mirrored cabinet to be installed outside beam spot detector vacuum subassembly, the peripheral space of occupancy is larger,
It is unfavorable for the layout of compact accelerator.And need frequently to carry out school to optical system using the beam spot detector of this layout
It is accurate.
Utility model content
For the disadvantages described above or Improvement requirement of the prior art, the utility model provides a kind of compact beam spot detector
Component, reduces the longitudinally mounted size and Outside Dimensions of beam spot detector when meeting fundamental measurement demand as far as possible.
To achieve the above object, according to the utility model, there is provided a kind of compact beam spot detector module, its feature exist
In, including driving mechanism, cross vacuum tube, target chamber, target piece and imaging system, wherein,
The driving mechanism includes cylinder body and is arranged on piston rod on cylinder body, setting downwards；
The cross vacuum tube is located at the lower section of the cylinder body, and the cross vacuum tube includes intersecting horizontal vacuum pipe
With vertical vacuum tube, the top and bottom of the vertical vacuum tube are respectively arranged with upper flange and lower flange, the upper flange peace
On the cylinder body, passage of the horizontal vacuum pipe as horizontal proton beam；
The piston rod is stretched into the cross vacuum tube after passing through the upper flange；
The target chamber is installed on the lower end of the piston rod, which is located in the cross vacuum tube, and the target chamber
The upper installation target piece；
The imaging system be installed on the lower flange on, the imaging system include link together attenuator, focus
Camera lens and CCD camera and they set gradually from top to bottom, the attenuator be installed on the lower flange on, the lower flange
Position corresponding to the attenuator is provided with vacuum window；
The piston rod, vertical vacuum tube and the tight shot are coaxially disposed.
Preferably, the cross vacuum chamber uses STL304 stainless steels, and its vacuum leak rate is less than 1 × 10-8Pa.L/
s。
Preferably, it is described that sylphon seal is used between vacuum tube and the cylinder body vertically.
Preferably, the driving mechanism is cylinder.
Preferably, the attenuator is installed on the lower flange by casing, and the attenuator is detachably installed
In described sleeve pipe, in order to replace attenuator, so as to be engaged the adaptation not strong line of cocurrent flow with the time for exposure of CCD camera
Diagnosis.
Preferably, the target chamber is installed on the lower end of the piston rod by connecting rod, it includes backboard, quoit and lock
Tight nut, the backboard and the quoit clamp the target piece, and the locking nut is through the quoit and described
Target piece rear thread is connected on the backboard, for the fixation target piece.
In general, by the contemplated above technical scheme of the utility model compared with prior art, can obtain down
Row beneficial effect：
The driving mechanism of the utility model is located above vertical vacuum tube, and imaging system is located at the lower section of vertical vacuum tube,
Longitudinally mounted size is smaller.Imaging system is installed together with vertical vacuum tube, avoids using mirrored cabinet, peripheral installation dimension compared with
Small therefore larger particularly suitable for compact accelerator, especially beam spot size accelerator.According to the size of required target chamber
With the size of driving mechanism, beam spot detector module size and flange size can be reduced accordingly, so as to obtain optimal indulge
To installation dimension.
Brief description of the drawings
Fig. 1 is the simplified schematic diagram of the utility model；
Fig. 2 is that target piece is installed on the simplified schematic diagram on target chamber in the utility model.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, is further elaborated the utility model.It should be appreciated that specific embodiment described herein is only explaining
The utility model, is not used to limit the utility model.In addition, institute in each embodiment of the utility model disclosed below
As long as the technical characteristic being related to does not form conflict and is mutually combined each other.
With reference to Fig. 1, Fig. 2, a kind of compact beam spot detector module, including driving mechanism 1, cross vacuum tube 2, target chamber 3
With imaging system 4, wherein,
The driving mechanism 1 includes cylinder body and is arranged on piston rod on cylinder body, setting downwards；
The cross vacuum tube 2 is located at the lower section of the cylinder body, and the cross vacuum tube 2 includes intersecting horizontal vacuum
Pipe and vertical vacuum tube, the top and bottom of the vertical vacuum tube are respectively arranged with upper flange and lower flange, the upper flange
On the cylinder body, passage of the horizontal vacuum pipe as horizontal proton beam；
The piston rod is stretched into the cross vacuum tube 2 after passing through the upper flange；
The target chamber 3 is installed on the lower end of the piston rod, which is located in the cross vacuum tube 2, and should
The target piece 6 is installed on target chamber 3；Preferably, the target chamber 3 is installed on the lower end of the piston rod by connecting rod 5, it includes
Backboard 31, quoit 32 and locking nut 33, the backboard 31 and the quoit 32 clamp the target piece 6, and the lock
Tight nut 33 is connected on the backboard 31 through the quoit 32 and 6 rear thread of target piece, for the fixation target
Piece 6.
The imaging system 4 be installed on the lower flange on, the imaging system 4 include link together attenuator 43,
Tight shot 42 and CCD camera 41 and they set gradually from top to bottom, the attenuator 43 be installed on the lower flange on,
The lower flange is provided with vacuum window in the position corresponding to the attenuator 43；
The piston rod, vertical vacuum tube and the tight shot 42 are coaxially disposed.
With reference to Fig. 1, driving mechanism 1 is located at the top of vertical vacuum tube, and imaging system 4 is located at the lower section of vertical vacuum tube.
The axis of the axis of driving mechanism 1, the optical axis of imaging system 4 and vertical vacuum tube is on the same line.
The cross vacuum tube 2 of the utility model uses STL304 stainless steels, meets high vacuum requirement, and vacuum leak rate is less than 1
×10-8Pa.L/s.Vertical vacuum tube and driving mechanism 1 use sylphon seal, and flange specification is CF100.Vacuum tube and imaging
It is designed as that flange, specification CF100 is fixedly mounted between system 4.Upper flange surface apart from horizontal plane 150mm, lower flange identity distance from
Horizontal plane 130mm.2 both ends of cross vacuum tube are designed as that flange, specification CF100 is fixedly mounted.The longitudinally mounted length of vacuum chamber
For 200mm.
The driving mechanism 1 of the utility model is cylinder, it uses pneumatic actuation, and wherein cylinder is highly 290mm, internal diameter
152mm, outside diameter 184mm.The stroke of cylinder is 80mm.Target chamber 3 and the end of piston rod link together.
The utility model uses target piece 6 as ceramic target, its a diameter of 68mm, thickness 1mm, can complete RMS transverse direction rulers
The very little Gauss beam spot size measurement less than 10mm.Target chamber 3 is the quoit 32 with backboard 31, and the outside diameter of quoit 32 is 70mm,
Internal diameter is 68mm, 31 thickness 0.5mm of backboard, and 3 material of target chamber uses aluminium.
The traffic direction of target piece 6 and beam direction angle at 45 ° in the utility model, imaging optical path and target is in same
On straight line.
Further, the attenuator 43 is installed on the lower flange by casing 7, and the attenuator 43 is detachable
Installed in the bottom of described sleeve pipe 7, in order to replace attenuator 43, so as to be engaged adaptation with the time for exposure of CCD camera 41
The not strong beam diagnostics of cocurrent flow.Since attenuator 43 is detachable, the utility model preferably uses 0.1%, 1%, and 10% 3 kind is declined
Subtract the attenuator 43 of ratio.
The vacuum window of a diameter of 30mm, convenient imaging are left between the vertical vacuum tube and imaging system 4 of the utility model
System 4 obtains hot spot.CCD camera 41 uses Basler ace645-100gm, and resolution ratio is 659 × 494.Lens select focal length
For 16mm, effective diameter is the tight shot 42 of 27mm.42 front end face of tight shot and the distance of vertical vacuum tube horizontal plane are
200mm.Attenuator 43 and tight shot 42 by the way that the bolt of M27 × 0.5mm specifications is connected.Tight shot 42 and CCD camera 41
Pass through C mouthfuls of connections.
In the utility model, the signal of proton beam lateral dimension measurement is carried out using the compact beam spot detection components
Figure is as shown in Figure 2.Target chamber 3 is inserted into vacuum chamber central horizontal plane by piston rod, is run in proton beam vacuum tube in the horizontal direction,
Collide with target piece 6 and produce visible ray, continuing across backboard 31 after loss sub-fraction energy leaves target chamber 3.Due to target
Piece 6 produce light be isotropic, therefore understand some light pass through vacuum window and through casing 7 and by tight shot 42 receive and into
As on the chip of CCD camera 41, the two dimensional image that can obtain beam spot is acquired by CCD camera 41.Completion to be measured
Afterwards, target chamber 3 is detached line by piston rod under the action of driving mechanism 1.
As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not
To limit the utility model, any modification for being made where within the spirit and principles of the present invention, equivalent substitution and change
Into etc., it should be included within the scope of protection of this utility model.
Claims (6)
- A kind of 1. compact beam spot detector module, it is characterised in that including driving mechanism, cross vacuum tube, target chamber, target piece and Imaging system, wherein,The driving mechanism includes cylinder body and is arranged on piston rod on cylinder body, setting downwards；The cross vacuum tube is located at the lower section of the cylinder body, and the cross vacuum tube includes intersecting horizontal vacuum pipe and erects Straight vacuum tube, the top and bottom of the vertical vacuum tube are respectively arranged with upper flange and lower flange, and the upper flange is installed on On the cylinder body, passage of the horizontal vacuum pipe as horizontal proton beam；The piston rod is stretched into the cross vacuum tube after passing through the upper flange；The target chamber is installed on the lower end of the piston rod, which is located in the cross vacuum tube, and pacifies on the target chamber Fill the target piece；The imaging system is installed on the lower flange, which includes attenuator, the tight shot to link together With CCD camera and they set gradually from top to bottom, the attenuator be installed on the lower flange on, the lower flange is right The position of attenuator described in Ying Yu is provided with vacuum window；The piston rod, vertical vacuum tube and the tight shot are coaxially disposed.
- 2. a kind of compact beam spot detector module according to claim 1, it is characterised in that the cross vacuum chamber is adopted With STL304 stainless steels, and its vacuum leak rate is less than 1 × 10-8Pa.L/s。
- A kind of 3. compact beam spot detector module according to claim 1, it is characterised in that the vertical vacuum tube and Sylphon seal is used between the cylinder body.
- 4. a kind of compact beam spot detector module according to claim 1, it is characterised in that the driving mechanism is gas Cylinder.
- 5. a kind of compact beam spot detector module according to claim 1, it is characterised in that the attenuator passes through set Pipe is installed on the lower flange, and the attenuator is removably mounted in described sleeve pipe, in order to replace attenuator, from And it is engaged with the time for exposure of CCD camera and adapts to the not strong beam diagnostics of cocurrent flow.
- 6. a kind of compact beam spot detector module according to claim 1, it is characterised in that the target chamber passes through connection Bar is installed on the lower end of the piston rod, it includes backboard, quoit and locking nut, and the backboard and the quoit are clamped The target piece, and the locking nut is connected on the backboard through the quoit and the target piece rear thread, with In the fixation target piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381198.8U CN207352180U (en) | 2017-10-25 | 2017-10-25 | A kind of compact beam spot detector module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721381198.8U CN207352180U (en) | 2017-10-25 | 2017-10-25 | A kind of compact beam spot detector module |
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| CN207352180U true CN207352180U (en) | 2018-05-11 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742007A (en) * | 2019-01-18 | 2019-05-10 | 西藏大学 | A kind of compact charged particle detector |
| CN111077561A (en) * | 2019-12-18 | 2020-04-28 | 中国科学院近代物理研究所 | Residual gas charged particle beam monitoring device and method thereof |
| CN113311472A (en) * | 2021-05-19 | 2021-08-27 | 中国原子能科学研究院 | Detection device and particle accelerator |
-
2017
- 2017-10-25 CN CN201721381198.8U patent/CN207352180U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109742007A (en) * | 2019-01-18 | 2019-05-10 | 西藏大学 | A kind of compact charged particle detector |
| CN111077561A (en) * | 2019-12-18 | 2020-04-28 | 中国科学院近代物理研究所 | Residual gas charged particle beam monitoring device and method thereof |
| CN113311472A (en) * | 2021-05-19 | 2021-08-27 | 中国原子能科学研究院 | Detection device and particle accelerator |
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