CN204945388U - A kind of novel beam detector - Google Patents
A kind of novel beam detector Download PDFInfo
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- CN204945388U CN204945388U CN201520657343.5U CN201520657343U CN204945388U CN 204945388 U CN204945388 U CN 204945388U CN 201520657343 U CN201520657343 U CN 201520657343U CN 204945388 U CN204945388 U CN 204945388U
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- sheet metal
- line
- scintillator panel
- beam detector
- housing
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Abstract
A kind of novel beam detector, comprises housing, sheet metal, scintillator panel and CCD camera.Be provided with a detection cavity in this housing, the both sides of this detection cavity are respectively used to be provided with line entrance port and line exit portal for line turnover, and this line entrance port and line exit portal are located along the same line, and the upper end of this detection cavity is provided with detecting window; Sheet metal is articulated with on housing by rotating shaft, and this sheet metal is between line entrance port and line exit portal, and this sheet metal can move between the primary importance stopping line and the second place dodging line, and this sheet metal is by galvanometer ground connection; Scintillator panel is fixedly arranged on sheet metal side; CCD camera to be installed on outside detecting window and to be sent by scintillator panel and through the light of detecting window for detecting.Measurement function of the present utility model enriches, and cost is low, easily produces in batches, can install this detector several in beam line, monitors whole beam line quality of beam, and easy to use.
Description
Technical field
The utility model relates to a kind of novel beam detector.
Background technology
Proton heavy particle radiotherapy cancer is higher than conventional radiotheraphy precision, little to normal cellular damage.Its therapeutic system and correlation technique are in nearly develop rapidly decades.In order to ensure higher quality of beam, its beam corridor often will arrange multiple, multiple detector, and to detect beam parameters, and feedback data is to control system, is adjusted accordingly, and obtains the line that can be used in Therapeutic cancer.
The existing detector for beam diagnostics generally comprises Faraday cylinder, ionization chamber, position sensor etc., strong for the stream measuring line, energy, position, shape, the parameters such as emittance.But although Faraday cylinder cost is lower, test function is single, although ionization chamber, position sensor feature richness, processing and manufacturing difficulty is comparatively large, and cost is high, and complicated operation, to the ability of user and competency profiling high.
Utility model content
For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of novel beam detector, and detecting function enriches, and cost is low, and easy to use.
For achieving the above object, the utility model adopts following technical scheme:
A kind of novel beam detector, comprising:
Housing, is provided with a detection cavity in this housing, the both sides of this detection cavity are respectively equipped with line entrance port and line exit portal for supplying line turnover, and this line entrance port and line exit portal are located along the same line, and the upper end of this detection cavity is provided with detecting window;
Be articulated with the sheet metal on housing by rotating shaft, this sheet metal is between line entrance port and line exit portal, and this sheet metal can move between the primary importance stopping line and the second place dodging line, and this sheet metal is by galvanometer ground connection;
Be fixedly arranged on the scintillator panel of sheet metal side, for being irradiated by line when sheet metal is positioned at primary importance;
CCD camera, to be installed on outside detecting window and to be sent by scintillator panel and through the light of detecting window for detecting.
The upper end of this detection cavity is provided with two detecting windows, and this Liang Ge detecting window branch is installed on directly over detection cavity and oblique upper.
The upper end of sheet metal is articulated with on housing by rotating shaft, and when this sheet metal is positioned at primary importance, scintillator panel is positioned at the side of sheet metal near line entrance port; When this sheet metal is positioned at the second place, sheet metal is positioned at the top of this line, and scintillator panel is positioned at the top of sheet metal.
The lower end of sheet metal is articulated with on housing by rotating shaft, and when this sheet metal is positioned at primary importance, scintillator panel is positioned at the side of sheet metal near line entrance port; When this sheet metal is positioned at the second place, sheet metal is positioned at the below of this line, and scintillator panel is positioned at the top of sheet metal.
The side that this sheet metal is close to scintillator panel also offers groove, is provided with tungsten silk screen, is also folded with insulcrete between sheet metal and scintillator panel in this groove, and this insulcrete is provided with the opening being communicated in groove.
Also be folded with plate bias voltage between sheet metal and insulcrete, this plate bias voltage is connected to negative high voltage.
The inner side of detecting window is provided with lens, and these lens are for regulating the areas imaging of CCD camera.
This novel beam detector also comprises driving mechanism, and this driving mechanism is for driving this axis of rotation.
This sheet metal is also provided with resistance away from the side of scintillator panel and stops device, and the two ends that resistance stops device are connected to sheet metal and galvanometer, and when this sheet metal is positioned at primary importance, the direction of illumination of length direction and this line that this resistance stops device is located along the same line.
The side of this detection cavity is also provided with hatch, this housing is also provided with for covering the hatch door establishing this hatch, is folded with O-ring seal between hatch door and housing, this hatch door is provided with motor vacuum adapter and signal converting head.The beneficial effects of the utility model are:
Compared to prior art, the utility model in use, operator drives sheet metal to turn to primary importance by rotating shaft, line enters from line entrance port, irradiate on scintillator panel, scintillator sends fluorescence under particle or ray bombardment, the light of this scintillator panel generation is detected by CCD camera, and utilize the method for optical imagery to measure position and the cross sectional shape of line, charged particle through scintillator panel in line is collected by sheet metal, and it is strong to record the stream of line by galvanometer, when not needing to measure, only sheet metal need be turned to the second place, line just can penetrate from line exit portal, do not affect the normal work of line, measurement function of the present utility model enriches, cost is low, easy batch production, this detector several can be installed in beam line, whole beam line quality of beam is monitored, and it is easy to use, simple to operate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation (demonstrating inner structure) of sheet metal and scintillator panel in the utility model;
Fig. 3 is principle of work schematic diagram of the present utility model;
Fig. 4 is the structural representation (sheet metal be positioned at primary importance) of the first embodiment of the present utility model at measuring state;
Fig. 5 is the structural representation (sheet metal be positioned at the second place) of Fig. 4 illustrated embodiment in non-measured state;
Fig. 6 is the structural representation (sheet metal be positioned at primary importance) of the second embodiment of the present utility model at measuring state;
Fig. 7 is the structural representation (sheet metal be positioned at the second place) of Fig. 6 illustrated embodiment in non-measured state;
Wherein: 10, housing; 11, detection cavity; 111, line entrance port; 112, line exit portal; 113, detecting window; 114, fixed support; 115, hatch door; 1151, motor vacuum adapter; 1152, signal converting head; 20, sheet metal; 21, groove; 30, scintillator panel; 40, CCD camera; 50, rotating shaft; 60, galvanometer; 70, insulcrete; 80, plate bias voltage; 90, lens; 100, driving mechanism; 110, resistance stops device.
Embodiment
Below, by reference to the accompanying drawings and embodiment, the utility model is described further:
As shown in Figures 1 to 7, novel beam detector of the present utility model, comprises housing 10, sheet metal 20, scintillator panel 30 and CCD camera 40.A detection cavity 11 is provided with in this housing 10, the both sides of this detection cavity 11 are respectively used to be provided with line entrance port 111 and line exit portal 112 for line A turnover, this line entrance port 111 and line exit portal 112 are located along the same line, and the upper end of this detection cavity 11 is provided with detecting window 113; Sheet metal 20 is articulated with on housing 10 by rotating shaft 50, this sheet metal 20 is between line entrance port 111 and line exit portal 112, and this sheet metal 20 can move between the primary importance (measuring state) stopping line A and the second place (non-measured state) dodging line A, this sheet metal 20 is by galvanometer 60 ground connection; Scintillator panel 30 is fixedly arranged on sheet metal 20 side, for being irradiated by line A when sheet metal 20 is positioned at primary importance; CCD camera 40 to be installed on outside detecting window 113 and to be sent by scintillator panel 30 and through the light of detecting window 113 for detecting.
The utility model in use, operator drives sheet metal 20 to turn to primary importance by rotating shaft 50, line A enters from line entrance port 111, irradiate on scintillator panel 30, scintillator sends fluorescence under particle or ray bombardment, the light of this scintillator panel 30 generation is detected by CCD camera 40, and utilize the method for optical imagery to measure position and the cross sectional shape of line A, charged particle through scintillator panel 30 in line A is collected by sheet metal 20, and it is strong to record the stream of line A by galvanometer 60, when not needing to measure, only sheet metal 20 need be turned to the second place, line A just can penetrate from line exit portal 112, do not affect the normal work of line A, measurement function of the present utility model enriches, cost is low, easy batch production, this detector several can be installed in beam line, whole beam line quality of beam is monitored, and it is easy to use, simple to operate.
The technological means how utilizing the method for optical imagery can realize on the basis that the application records to the position and cross sectional shape that measure line A for those skilled in the art, does not repeat them here.
Further, housing 10 has enough spaces to place scintillator panel 30 and sheet metal 20, and has the rotation space of 0-45 ° at least.Detection cavity inside dimension is 133*133*133mm, and wall thickness is 10mm, and material is aluminium alloy.
Further, the material of sheet metal 20 is steel.
Further, scintillator plane of illumination is carved with network for location ruling.
Further, the kind of line A comprises the charged particle beams such as proton, heavy ion, electronics.
Further, the quantity of detecting window 113 can be multiple, and such detecting window 113 is when utilizing CCD camera 40 to measure, and other detecting window 113 may be used for the situation of observing detection cavity 11 inside; Certainly, for making measurement more reliable, two detecting windows 113 also can be used to measure simultaneously.Preferably, the upper end of this detection cavity 11 is provided with two detecting windows 113, and these two detecting window 113 branches are installed on directly over detection cavity 11 and oblique upper.
Sheet metal 20 can be articulated with on housing 10 by different mounting meanss.
As a kind of embodiment, the upper end of sheet metal 20 is articulated with on housing 10 by rotating shaft 50, and when this sheet metal 20 is positioned at primary importance, scintillator panel 30 is positioned at the side of sheet metal 20 near line entrance port 111; When this sheet metal 20 is positioned at the second place, sheet metal 20 is positioned at the top of line A, and scintillator panel 30 is positioned at the top of sheet metal 20.When not needing to measure; sheet metal 20 can turn to the outside of line A; and scintillator panel 30 is positioned at the top of sheet metal 20; such sheet metal 20 can play a protective role to scintillator panel 30; reduce the radiation that particle scattering causes scintillator, the serviceable life of scintillator panel 30 can be improved.
As another kind of embodiment, the lower end of sheet metal 20 is articulated with on housing 10 by rotating shaft 50, and when this sheet metal 20 is positioned at primary importance, scintillator panel 30 is positioned at the side of sheet metal 20 near line entrance port 111; When this sheet metal 20 is positioned at the second place, sheet metal 20 is positioned at the top of line A.
Further, the side that this sheet metal 20 is close to scintillator panel 30 also offers groove 21, tungsten silk screen is provided with in this groove 21, insulcrete 70 is also folded with between sheet metal 20 and scintillator panel 30, this insulcrete 70 is provided with the opening being communicated in groove 21, tungsten silk screen for hinder stop line A while can also reduce secondary.The material of insulcrete 70 is good insulator, and the material of not easily deformation, such as teflon.
Further, be also folded with plate bias voltage 80 between sheet metal 20 and insulcrete 70, this plate bias voltage 80 is connected to negative high voltage when this detector works, and escapes to reduce secondary electron.The material of plate bias voltage 80 is aluminium alloy or copper, or other good conductors.
Further, the inner side of detecting window 113 is provided with lens 90, and these lens 90 are for regulating the areas imaging of CCD camera 40.Certainly, lens 90 also can be processed as one with CCD camera 40, as the camera of focus adjustable.
Further, this novel beam detector also comprises driving mechanism 100, and this driving mechanism 100 rotates for driving this rotating shaft 50.Driving mechanism 100 can be motor, and motor rotates for driving rotating shaft 50, and preferably, this motor is vacuum motor.
Further, be provided with fixed support 114 outside detecting window 113, CCD camera 40 is installed on this fixed support 114, installs comparatively firm and convenient like this.
Further, detection cavity 11 is also provided with LED, for providing illumination.
The side of this detection cavity 11 is also provided with hatch, this housing 10 is also provided with for covering the hatch door 115 establishing this hatch, O-ring seal is folded with between hatch door 115 and housing 10, this hatch door 115 is provided with motor vacuum adapter 1151 and signal converting head 1152, in use, motor vacuum adapter 1151 may be used for for feeding electric motors and Signal transmissions, and signal converting head 1152 can provide bias voltage etc. for strong Signal transmissions of powering to LED, flow, for plate bias voltage 80.
This sheet metal 20 is also provided with resistance away from the side of scintillator panel 30 and stops device 110, the two ends that resistance stops device 110 are connected to sheet metal 20 and galvanometer 60, when this sheet metal 20 is positioned at primary importance, the direction of illumination of length direction and this line A that this resistance stops device 110 is located along the same line.Resistance stops device 110 and can hinder and stop high energy particle, thus collects electric charge.The material that resistance stops device 110 is tungsten, axial length 16mm, diameter 10mm, with angle at 45 °, back up pad surface.The effective length that resistance stops device 110 is 16mm, adds the thickness of tungsten filament and sheet metal 20, is enough to that all particle resistances are parked in resistance and stops in device 110.
The selection of scintillator material:
Scintillator is core of the present utility model, and following cardinal rule is followed in the selection of scintillator:
1) measure line by the mode of optical imagery, just require that the photoyield of scintillator wants high, light absorption factor is little;
2) visible wavelength is at 350nm-800nm, requires that the wavelength of scintillator luminescence is also within the scope of this, to adopt conventional CCD just can reach measurement object;
3) scintillator material is easy to be processed into thin slice, or is polished into particulate, can be sprayed in metal profile;
4) cost is low, and the life-span is long.
Following table gives several typical scintillator parameter, and first is classified as scintillator type, comprises monocrystal, phosphor, pottery and glass; Second title or the chemical formula being classified as scintillator material, Y3Al5O12 is the chemical formula of YAG crystal; 3rd is classified as density, unit g/cm3; 4th is classified as the quantity that incident particle loss 1MeV energy can produce photon; 5th is classified as light absorption factor, the photon share of material of namely cannot escaping out; 6th is classified as maximum optical wavelength, in units of nm.
Note mixing in the material and can carrying out modification to it, in cesium iodide (CsI), such as add thallium (Tl) photoyield and emission wavelength can be increased, make it more to be conducive to measuring.
Be scintillator parameter list below:
To one skilled in the art, according to technical scheme described above and design, other various corresponding change and deformation can be made, and all these change and deformation all should belong within the protection domain of the utility model claim.
Claims (10)
1. a novel beam detector, is characterized in that, comprising:
Housing, is provided with a detection cavity in this housing, the both sides of this detection cavity are respectively equipped with line entrance port and line exit portal for supplying line turnover, and this line entrance port and line exit portal are located along the same line, and the upper end of this detection cavity is provided with detecting window;
Be articulated with the sheet metal on housing by rotating shaft, this sheet metal is between line entrance port and line exit portal, and this sheet metal can move between the primary importance stopping line and the second place dodging line, and this sheet metal is by galvanometer ground connection;
Be fixedly arranged on the scintillator panel of sheet metal side, for being irradiated by line when sheet metal is positioned at primary importance;
CCD camera, to be installed on outside detecting window and to be sent by scintillator panel and through the light of detecting window for detecting.
2. novel beam detector as claimed in claim 1, is characterized in that, the upper end of this detection cavity is provided with two detecting windows, and this Liang Ge detecting window branch is installed on directly over detection cavity and oblique upper.
3. novel beam detector as claimed in claim 1, is characterized in that, the upper end of sheet metal is articulated with on housing by rotating shaft, and when this sheet metal is positioned at primary importance, scintillator panel is positioned at the side of sheet metal near line entrance port; When this sheet metal is positioned at the second place, sheet metal is positioned at the top of this line, and scintillator panel is positioned at the top of sheet metal.
4. novel beam detector as claimed in claim 1, is characterized in that, the lower end of sheet metal is articulated with on housing by rotating shaft, and when this sheet metal is positioned at primary importance, scintillator panel is positioned at the side of sheet metal near line entrance port; When this sheet metal is positioned at the second place, sheet metal is positioned at the below of this line, and scintillator panel is positioned at the top of sheet metal.
5. novel beam detector as claimed in claim 1, it is characterized in that, the side that this sheet metal is close to scintillator panel also offers groove, is provided with tungsten silk screen in this groove, also be folded with insulcrete between sheet metal and scintillator panel, this insulcrete is provided with the opening being communicated in groove.
6. novel beam detector as claimed in claim 5, is characterized in that, be also folded with plate bias voltage between sheet metal and insulcrete, and this plate bias voltage is connected to negative high voltage.
7. novel beam detector as claimed in claim 1, is characterized in that, the inner side of detecting window is provided with lens, and these lens are for regulating the areas imaging of CCD camera.
8. novel beam detector as claimed in claim 1, is characterized in that, this novel beam detector also comprises driving mechanism, and this driving mechanism is for driving this axis of rotation.
9. novel beam detector as claimed in claim 1, it is characterized in that, this sheet metal is also provided with resistance away from the side of scintillator panel and stops device, the two ends that resistance stops device are connected to sheet metal and galvanometer, when this sheet metal is positioned at primary importance, the direction of illumination of length direction and this line that this resistance stops device is located along the same line.
10. novel beam detector as claimed in claim 1, it is characterized in that, the side of this detection cavity is also provided with hatch, this housing being also provided with for covering the hatch door establishing this hatch, be folded with O-ring seal between hatch door and housing, this hatch door is provided with motor vacuum adapter and signal converting head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657343.5U CN204945388U (en) | 2015-08-27 | 2015-08-27 | A kind of novel beam detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520657343.5U CN204945388U (en) | 2015-08-27 | 2015-08-27 | A kind of novel beam detector |
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| Publication Number | Publication Date |
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| CN204945388U true CN204945388U (en) | 2016-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520657343.5U Withdrawn - After Issue CN204945388U (en) | 2015-08-27 | 2015-08-27 | A kind of novel beam detector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068110A (en) * | 2015-08-27 | 2015-11-18 | 广东恒聚医疗科技有限公司 | Novel beam detector |
-
2015
- 2015-08-27 CN CN201520657343.5U patent/CN204945388U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105068110A (en) * | 2015-08-27 | 2015-11-18 | 广东恒聚医疗科技有限公司 | Novel beam detector |
| CN105068110B (en) * | 2015-08-27 | 2018-04-13 | 广东恒聚医疗科技有限公司 | A kind of new beam detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160106 Effective date of abandoning: 20180413 |
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| AV01 | Patent right actively abandoned |