阅读说明：本技术 一种电子加速器辐照强度检测装置 (Electron accelerator irradiation intensity detection device ) 是由 封淼伟 谭松清 高宁 王复涛 赵平 单云 叶斌 王凤涛 黄敬松 徐粒峰 于 2020-12-03 设计创作，主要内容包括：本发明公开了一种电子加速器辐照强度检测装置,属于电子加速器辐照强度检测技术领域,包括：辐照窗；辐照窗内部设置有一钛膜,钛膜将辐照窗内部分隔成钛膜前真空区和钛膜后输出区,其特征在于,还包括第一束流强度检测模块；第一束流强度检测模块一端与钛膜后输出区连接,以检测得到第一束流强度。该装置可以得到实际辐照到物体上的束流辐照强度。(The invention discloses a device for detecting the irradiation intensity of an electron accelerator, which belongs to the technical field of the irradiation intensity detection of the electron accelerator and comprises: an irradiation window; the device is characterized by also comprising a first beam intensity detection module; one end of the first beam intensity detection module is connected with the rear titanium film output area so as to obtain first beam intensity through detection. The device can obtain the beam irradiation intensity actually irradiated on an object.)

1. An electron accelerator irradiation intensity detection apparatus comprising: an irradiation window; the device is characterized by also comprising a first beam intensity detection module;

one end of the first beam intensity detection module is connected with the rear titanium film output area to obtain first beam intensity through detection.

2. The electron accelerator irradiation intensity detection apparatus according to claim 1, further comprising a second beam intensity detection module and a central control room;

the other end of the first beam intensity detection module is electrically connected with the central control room so as to transmit the first beam intensity to the central control room;

one end of the second beam intensity detection module is arranged in the titanium film front vacuum area to obtain second beam intensity through detection;

and the central control room receives the first beam intensity and the second beam intensity and calculates to obtain a third beam intensity, and the central control room further calculates to obtain the current temperature of the titanium film according to the third beam intensity obtained by calculation.

3. The electron accelerator irradiation intensity detection apparatus according to any one of claims 1 or 2, wherein the first beam intensity detection module comprises a water tank, a copper plate, and an ammeter;

the water tank is opposite to an outlet of the titanium film rear output area, water is contained in the water tank, the copper plate is soaked in the water, one end of the copper plate extends out of the water tank and is electrically connected with the ammeter, and one end of the ammeter is arranged in a grounding mode.

4. The device for detecting the irradiation intensity of the electron accelerator according to claim 3, wherein the copper plate is electrically connected with the ammeter through a first irradiation-resistant cable, and a first protective tube is sleeved outside the first irradiation-resistant cable.

5. The device for detecting the irradiation intensity of the electron accelerator according to claim 4, wherein a copper guide sheet loose joint and an adapter sheet are further arranged between the copper plate and the first irradiation-resistant cable, the copper guide sheet loose joint is connected with the side edge of the copper plate and extends out of the copper plate, and two ends of the adapter sheet are respectively connected with the copper guide sheet loose joint and the first irradiation-resistant cable.

6. The electron accelerator irradiation intensity detection apparatus according to claim 5, wherein the ammeter is grounded through a second irradiation resistant cable.

7. The apparatus for detecting irradiation intensity of an electron accelerator according to claim 6, wherein a second protective tube is sleeved outside the second irradiation-resistant cable.

8. The electron accelerator irradiation intensity detection apparatus according to claim 2, wherein the second beam intensity detection module includes a beam transformer and a beam detector;

the beam transformer is arranged in the titanium film front vacuum area, and the beam detector is arranged outside the irradiation window and is respectively and electrically connected with the beam transformer and the central control room.

9. The apparatus of claim 8, wherein the beam detector is electrically connected to the beam transformer by a third anti-radiation cable.

10. The device for detecting irradiation intensity of an electron accelerator according to claim 9, wherein a third protection tube is sleeved outside the third radiation-resistant cable.

Technical Field

The invention relates to the technical field of electron accelerator irradiation intensity detection, in particular to an electron accelerator irradiation intensity detection device.

Background

In the conventional device for detecting the irradiation intensity of the electron accelerator, a beam transformer is arranged at a beam outlet (in front of a titanium film), a beam detection module is arranged in the beam transformer, an electron beam passes through the beam detection module nearby to obtain a coupled induced current, and a signal is transmitted to a beam detector through a coaxial cable to obtain the beam intensity. The detected beam intensity and the actual irradiation intensity have deviation, the beam intensity detected by the beam transformer is positioned at the front end of the titanium film, a part of energy lost by the beam passing through the titanium film is converted into the temperature of the titanium film, and the rest part of the energy is transmitted to the beam discharging water tank through the air, so that the dose which can be received by the actual irradiation object is the intensity of the beam transformer minus the intensity of the titanium film loss, and the dose of the actual irradiated object has larger deviation.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide the device for detecting the irradiation intensity of the electron accelerator, which can detect the beam irradiation intensity actually irradiated on an object.

The specific technical scheme is as follows:

an electron accelerator irradiation intensity detection device mainly comprises: an irradiation window; the device is characterized by also comprising a first beam intensity detection module;

one end of the first beam intensity detection module is connected with the rear titanium film output area to obtain first beam intensity through detection.

The irradiation intensity detection device of the electron accelerator is characterized by further comprising a second beam intensity detection module and a central control room;

the other end of the first beam intensity detection module is electrically connected with the central control room so as to transmit the first beam intensity to the central control room;

one end of the second beam intensity detection module is arranged in the titanium film front vacuum area to obtain second beam intensity through detection;

and the central control room receives the first beam intensity and the second beam intensity and calculates to obtain a third beam intensity, and the central control room further calculates to obtain the current temperature of the titanium film according to the third beam intensity obtained by calculation.

The irradiation intensity detection device of the electron accelerator is further characterized in that the first beam intensity detection module comprises a water tank, a copper plate and an ammeter;

the water tank is opposite to an outlet of the titanium film rear output area, water is contained in the water tank, the copper plate is soaked in the water, one end of the copper plate extends out of the water tank and is electrically connected with the ammeter, and one end of the ammeter is arranged in a grounding mode.

In the irradiation intensity detection device for the electron accelerator, the copper plate is electrically connected with the ammeter through the first anti-irradiation cable, and the first protection tube is sleeved outside the first anti-irradiation cable.

The irradiation intensity detection device of the electron accelerator is further characterized in that a copper guide sheet loose joint and a switching sheet are further arranged between the copper plate and the first irradiation-resistant cable, the copper guide sheet loose joint is connected with the side edge of the copper plate and extends out of the copper plate, and two ends of the switching sheet are respectively connected with the copper guide sheet loose joint and the first irradiation-resistant cable.

In the above electron accelerator irradiation intensity detecting apparatus, the ammeter is grounded via the second irradiation resistant cable.

In the above device for detecting irradiation intensity of an electron accelerator, the second protection pipe is sleeved outside the second anti-irradiation cable.

In the above electron accelerator irradiation intensity detection apparatus, the second beam intensity detection module includes a beam transformer and a beam detector;

the beam transformer is arranged in the titanium film front vacuum area, and the beam detector is arranged outside the irradiation window and is respectively and electrically connected with the beam transformer and the central control room.

In the above device for detecting the irradiation intensity of the electron accelerator, the beam detector is electrically connected to the beam transformer by a third anti-irradiation cable.

In the above device for detecting the irradiation intensity of the electron accelerator, the third protection pipe is sleeved outside the third radiation-resistant cable.

The positive effects of the technical scheme are as follows:

according to the device for detecting the irradiation intensity of the electron accelerator, the first beam intensity of the output area behind the titanium film is detected through the first beam intensity detection module, and the beam irradiation intensity actually irradiated to an object can be obtained.

Drawings

Fig. 1 is a schematic structural diagram of an electron accelerator irradiation intensity detection apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a copper plate according to an embodiment of the present invention.

In the drawings: 1. an irradiation window; 2. a titanium film; 3. a central control room; 4. a water tank; 5. a copper plate; 6. an ammeter; 7. a first radiation resistant cable; 8. a first protective tube; 9. the copper guide sheet is movably connected; 10. a patch; 11. a titanium film front vacuum area; 12. a titanium film rear output area; 121. an outlet; 13. a second radiation resistant cable; 14. a second protection tube; 15. a beam transformer; 16. a beam detector; 17. a third radiation resistant cable; 18. and a third protection pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below by way of embodiments with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The numbering of the components themselves, such as "first", "second", etc., is used herein only to distinguish between the objects depicted and not to have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of an electron accelerator irradiation intensity detection apparatus according to an embodiment of the present invention, and fig. 2 is a schematic structural diagram of a copper plate according to an embodiment of the present invention. The embodiment of the invention discloses a device for detecting the irradiation intensity of an electron accelerator, which comprises: an irradiation window 1; the titanium film 2 is arranged in the irradiation window 1, and the titanium film 2 divides the inside of the irradiation window 1 into a titanium film front vacuum area 11 and a titanium film rear output area 12.

Wherein, the titanium film front vacuum area 11 is a vacuum structure.

In this embodiment, the irradiation window 1 is arranged in the vertical direction, the titanium film front vacuum region 11 and the titanium film rear output region 12 are arranged in the vertical direction, the titanium film front vacuum region 11 is above, the titanium film rear output region 12 is below, an electron gun (not shown) having a structure capable of generating an electron beam (also an electron beam) is arranged above the irradiation window 1, the generated electron beam enters the titanium film front vacuum region 11 from the top end of the irradiation window 1, and then enters the titanium film rear output region 12 through the titanium film 2, and when passing through the titanium film 2, the electron beam has loss.

The irradiation intensity detection device of the electron accelerator in this embodiment further includes a first beam intensity detection module, a second beam intensity detection module, and a central control room 3.

Further, one end of the first beam intensity detection module is connected with the titanium film rear output area 12 to detect and obtain the first beam intensity P1. The first beam intensity P1 is the beam intensity in the titanium film rear output region 12, and is also the beam irradiation intensity actually irradiated to the object.

Optionally, the first beam intensity detection module comprises a water tank 4, a copper plate 5 and an ammeter 6;

the water tank 4 is opposite to the outlet 121 of the titanium film rear output area 12, water is contained in the water tank 4, the copper plate 5 is soaked in the water, one end of the copper plate 5 extends out of the water tank 4 to be electrically connected with the ammeter 6, and one end of the ammeter 6 is grounded. Specifically, the copper plate 5 is fixed to the bottom of the water tank 4.

The copper plate 5 is laid at the bottom of the water tank 4, the electron beam passes through the titanium film 2 and strikes the water tank 4, water in the water tank 4 is relatively fixed, no overflow is caused, all electrons basically exist in the water tank 4, and the electrons can flow through the ammeter 6 to the grounding electrode along the copper plate 5 from high potential to low potential due to the conductivity of the water and the full contact with the bottom copper plate 5, so that the average current intensity P1 of the electron beam at the outlet of the titanium film 2 can be obtained.

Alternatively, in some embodiments, the copper plate 5 may be a square plate; alternatively, in some embodiments, the copper plate 5 is a grid-type copper plate, and may be a checkered copper plate, for example.

Optionally, the copper plate 5 is electrically connected with the ammeter 6 through a first anti-radiation cable 7, and a first protection tube 8 is sleeved outside the first anti-radiation cable 7.

Further, a copper guide sheet loose joint 9 and an adapter sheet 10 are further arranged between the copper plate 5 and the first anti-radiation cable 7, the copper guide sheet loose joint 9 is connected with the side edge of the copper plate 5 and extends out of the copper plate 5, and two ends of the adapter sheet 10 are respectively connected with the copper guide sheet loose joint 9 and the first anti-radiation cable 7. Wherein, the copper guide sheet loose joint 9 and the adapter sheet 10 are both made of conductive materials.

Specifically, the ammeter 6 is grounded through the second irradiation resistant cable 13. Further, a second protective tube 14 is sleeved outside the second radiation resistant cable 13.

In the irradiation intensity detection device of the electron accelerator in this embodiment, the first beam intensity P1 in the post-titanium-film output region 12 is detected by the first beam intensity detection module, so that the beam irradiation intensity actually irradiated on an object can be obtained.

Further, the device also comprises a second beam intensity detection module and a central control room 3.

Specifically, one end of the second beam intensity detection module is disposed in the titanium film front vacuum region 11 to detect the second beam intensity P2, and the other end of the second beam intensity detection module is electrically connected to the central control room 3 to transmit the second beam intensity P2 to the central control room 3.

Specifically, the second beam intensity P2 is the beam intensity in the titanium film front vacuum region.

Specifically, the second beam intensity detection module includes a beam transformer 15 and a beam detector 16;

the beam transformer 15 is arranged in the titanium film front vacuum area 11, and the beam detector 16 is arranged outside the irradiation window 1 and is respectively and electrically connected with the beam transformer 15 and the central control room 3.

Optionally, the beam detector 16 and the beam transformer 15 are electrically connected by a third radiation-resistant cable 17, and the beam detector 16 and the central control room 3 are electrically connected by a common cable.

The electron beam generated above the irradiation window 1 enters the irradiation window 1, but radiation is generated near the irradiation window 1, and therefore, the third radiation resistant cable 17 is sheathed with the third protective tube 18. The third protective tube 18 may be used to attenuate the radiation to which the third radiation resistant cable 17 is exposed and thus protect it. Optionally, the third protective tube 18 is a metal sleeve.

Specifically, the other end of the first beam intensity detection module is electrically connected to the central control room 3 to transmit the first beam intensity P1 to the central control room 3.

Optionally, the ammeter 6 is also electrically connected with the central control room 3 through a common cable 10.

The central control room 3 receives the first beam intensity P1 and the second beam intensity P2, and calculates to obtain a third beam intensity P3, and the central control room 3 further calculates to obtain the current temperature of the titanium film 2 according to the calculated third beam intensity P3.

Specifically, center room 3 is P3 according to the formula P1-P2, and P3 is the beam intensity attenuated by titanium film 2. The temperature rise temperature of the titanium film 2 can be calculated by substituting the P3 into a conductor current-carrying temperature rise formula, the current titanium film temperature is further calculated, the temperature of the titanium film 2 can be monitored in real time, and when the temperature of the titanium film 2 reaches an alarm value, protective measures are taken to prevent the titanium film 2 from being damaged.

In this embodiment, the first protection tube 8, the second protection tube 14, and the third protection tube 18 may be made of metal sleeves, so as to block ionizing radiation generated by high-energy electrons, attenuate radiation, protect cables disposed therein, and prolong the service life thereof.

The central control room 3 further includes a controller (not shown) and a display (not shown), the controller is electrically connected to the display, and the display can be used for displaying information such as the first beam intensity P1 obtained by the ammeter 6, the temperature rise of the titanium film 2, and the current temperature of the titanium film 2.

The irradiation intensity detection device of the electron accelerator in this embodiment, when in use: and (3) starting the electron accelerator, displaying the first beam intensity P1 obtained by the ammeter 6 to the central control room 3 in real time, adjusting the power of the accelerator until the required dosage through the beam intensity obtained by the ammeter 6, calculating the temperature rise of the titanium film 2 by the central control room 3 according to the difference between the front beam intensity and the rear beam intensity of the titanium film 2, displaying the temperature rise in the central control room 3, setting an alarm value and an interlocking value, prompting the central control popup window when the temperature reaches the alarm value, and starting the interlocking to protect the titanium film 2 from being damaged when the temperature reaches the interlocking value.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.