Accelerating tube of electron accelerator

Abstract

The present invention relates to an accelerating tube of an electron accelerator, comprising a plurality of electrode sheets and a plurality of insulating rings which are stacked. Each electrode sheet comprises an edge part; the edge part of each electrode sheet is connected to a first insulating ring by means of a corresponding first glue layer and is connected to a second insulating ring by means of a corresponding second glue layer; a plurality of through holes which are separated from each other are formed in each edge part; and each first glue layer and each second glue layer are communicated by means of the corresponding edge part and the through holes so that the first insulating ring and the second insulating ring are directly bonded. In the accelerating tube of the electron accelerator of the present invention, the internal stress of the electrode sheets is eliminated by means of the through holes in the edge parts of the electrode sheets, and adjacent insulating rings are directly bonded by means of the through holes, thereby improving the connection strength of the electrode sheets and the insulating rings, and enabling the insulating rings to be not prone to damage, ensuring that the accelerating tube can safely and reliably operate under ultrahigh vacuum conditions.

Description

Accelerating tube of electron accelerator TECHNICAL FIELD

[0001] The present invention relates to an electron accelerator, and more particularly to an accelerating tube of an electron accelerator. BACKGROUND

[0002] In an electron accelerator, the transmitted electrons are accelerated inside an accelerating tube. The accelerating tube comprises a plurality of electrode pieces and insulating rings, and is in a high vacuum environment. A voltage dividing resistor is connected between each of the electrode pieces, so that the electrons are accelerated inside the accelerating tube. In the past, when the electrode pieces and the insulating rings are bonded by glue, the stress generated in the metal electrode pieces during the manufacturing process not only destroys the bonding strength of the glue, but also causes the insulating rings to burst, thus destroying the vacuum and making the accelerating tube unable to work normally. In addition, the bonding of the electrode pieces and the entire annular plane of the insulating rings is poor in compactness, which leads to leakage and destroys the vacuum inside the accelerator. SUMMARY

[0003] In order to solve the problems caused by the glue bonding of the electrode pieces in the prior art, the present invention provides an accelerating tube of an electron accelerator.

[0004] The accelerating tube of the electron accelerator according to the present invention comprises a plurality of electrode pieces and a plurality of insulating rings stacked together, each of the electrode pieces comprises an edge portion, the edge portion of each of the electrode pieces is connected to a first insulating ring through a first glue layer and connected to a second insulating ring through a second glue layer, the edge portion is provided with a plurality of through holes spaced apart from each other, and the first glue layer and the second glue layer are communicated through the edge portion and the through holes to directly bond the first insulating ring and the second insulating ring.

[0005] In a preferred embodiment, the edge portion extends in a plane to form a platform, and the through holes are arranged on the platform.

[0006] In a preferred embodiment, the insulating ring has opposite top and bottom surfaces, the first insulating ring is connected to the top surface of the platform of the electrode piece through the bottom surface thereof by the first glue layer, and the second insulating ring is connected to the bottom surface of the platform of the electrode piece through the top surface thereof by the second glue layer.

[0007] In a preferred embodiment, the top surface of the platform is a roughened upper surface, and the bottom surface of the platform is a roughened lower surface.

[0008] In a preferred embodiment, the electrode piece is a stainless steel electrode piece.

[0009] In a preferred embodiment, the insulating ring is a glass ring.

[0010] In a preferred embodiment, each electrode sheet further comprises a ring-shaped groove portion located radially inward, and the edge portion extends radially outward from a circumferential edge of the ring-shaped groove portion.

[0011] In a preferred embodiment, the ring-shaped groove portion forms a V-shaped groove open upwardly through axial recessing.

[0012] According to the electron accelerator of the application, the stress in the electrode sheet is eliminated through the through hole of the edge portion of the electrode sheet, the adjacent insulating rings are directly bonded via the through hole, the connection strength of the electrode sheet and the insulating ring is improved, the insulating ring is not easy to be damaged, and the safe and reliable operation of the accelerating tube under ultra-high vacuum condition is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a schematic structural view of an accelerating tube of an electron accelerator according to a preferred embodiment of the application.

[0014] Fig. 2 is a schematic structural view of an electrode sheet of Fig. 1.

[0015] Fig. 3 is a schematic structural view of an insulating ring of Fig. 1. DETAILED DESCRIPTION

[0016] The preferred embodiment of the application will be described in detail below with reference to the accompanying drawings.

[0017] As shown in Fig. 1, the accelerating tube of the electron accelerator according to a preferred embodiment of the application comprises a plurality of electrode sheets 1 and a plurality of insulating rings 2, wherein the plurality of electrode sheets 1 are arranged in a stack with spacing between each other, the insulating rings 2 are arranged between adjacent electrode sheets 1, each electrode sheet 1 is connected to the insulating ring 2 above by a first glue layer 3 and connected to the insulating ring 2 below by a second glue layer 4. In this embodiment, the electrode sheet 1 is a stainless steel electrode sheet, and the insulating ring 2 is a glass ring. In addition, the accelerating tube of the electron accelerator according to this embodiment further comprises a first mounting flange 5 and a second mounting flange 6, wherein the first mounting flange 5 is fixedly mounted above the stacked plurality of electrode sheets 1, and the second mounting flange 6 is fixedly mounted below the stacked plurality of electrode sheets 1, so that the accelerating tube of this embodiment can be mounted as needed.

[0018] As shown in Fig. 2, the electrode sheet 1 comprises a ring-shaped groove portion 11 and an edge portion 12, wherein the groove portion 11 is located radially inward, and the edge portion 12 extends radially outward from a circumferential edge 112 of the groove portion 11, as shown in Fig. 1, and the insulating ring 2 is arranged between the edge portions 12 of the adjacent electrode sheets 1.

[0019] As shown in Fig. 2, the groove portion 11 forms a V-shaped groove 111 open upwardly through axial recessing, as shown in Fig. 1, and the ring-shaped groove portion 11 of the electrode sheet 1 above is arranged in the V-shaped groove 111 of the ring-shaped groove portion 11 of the electrode sheet 1 below.

[0020] As shown in Fig. 2, the edge portion 12 extends substantially in one plane to form a platform 121, and a plurality of through holes 122 are arranged on the platform 121. In the embodiment, the through holes 122 on the platform 121 are arranged in three circles, and each through hole 122 is uniformly spaced from each other. It should be understood that the specific distribution of the through holes 122 can be adjusted as needed.

[0021] As shown in Fig. 3, the cross section of the insulating ring 2 is generally rectangular, having opposite flat top and bottom surfaces 21 and 22. In combination with Fig. 1, the insulating ring 2 located above the electrode sheet 1 is bonded to the top surface of the platform 121 of the electrode sheet 1 by the first glue layer 3 through the flat bottom surface 22, and the insulating ring 2 located below the electrode sheet 1 is bonded to the bottom surface of the platform 121 of the electrode sheet 1 by the second glue layer 4 through the flat top surface 21. The two glue layers 3 and 4 are communicated through the through holes 122 on the platform 121, so that the adjacent insulating rings 2 are directly bonded, and the bonding is more firm. In the embodiment, the top surface of the platform 121 is a roughened upper surface, and the bottom surface of the platform 121 is a roughened lower surface.

[0022] The edge portion 12 of the electrode sheet 1 is provided with a plurality of through holes 122 arranged at intervals in the circumferential direction, which greatly eliminates the stress in the interior of the electrode sheet 1, improves the connection strength of the electrode sheet 1 and the insulating ring 2, and makes the electrode sheet 1 and the insulating ring 2 not easy to separate, and at the same time makes the insulating ring 2 not easy to be damaged, and ensures that the accelerating tube can be safely and reliably operated under ultra-high vacuum conditions.

[0023] The above is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. The above embodiment of the present application can be variously changed. That is, any simple, equivalent changes and modifications made according to the content of the claims and the specification of the present application are within the scope of the present application. The present application is not described in detail, and is a conventional technical content.

Claims

1. An accelerating tube of an electron accelerator, characterized by, The accelerating tube comprises a plurality of electrode sheets and a plurality of insulating rings arranged in a stack, each electrode sheet comprises an edge portion, the edge portion of each electrode sheet is connected with a first insulating ring through a first glue layer and connected with a second insulating ring through a second glue layer, the edge portion is provided with a plurality of through holes spaced apart from each other, and the first glue layer and the second glue layer are communicated through the edge portion and the through holes to enable the first insulating ring and the second insulating ring to be directly bonded.

2. The accelerator tube of claim 1, wherein The edge portion extends on a plane to form a platform, and the through holes are arranged on the platform.

3. The accelerator tube of claim 2, wherein, The insulating ring has opposite top and bottom surfaces, the first insulating ring is connected with the top surface of the platform of the electrode sheet through the bottom surface thereof and the first glue layer, and the second insulating ring is connected with the bottom surface of the platform of the electrode sheet through the top surface thereof and the second glue layer.

4. The accelerator tube of claim 3, wherein The top surface of the platform is a roughened upper surface, and the bottom surface of the platform is a roughened lower surface.

5. The accelerator tube of claim 1, wherein The electrode sheet is a stainless steel electrode sheet.

6. The accelerator tube of claim 1, wherein, The insulating ring is a glass ring.

7. The accelerator tube of claim 1, wherein Each electrode sheet further comprises an annular groove portion located on the radially inner side, and the edge portion extends radially outward from the circumferential edge of the annular groove portion.

8. The accelerator tube of claim 7, wherein, The annular groove portion forms a V-shaped groove open upward through axial recessing.

Images