Accelerator capable of adjusting beam on line

Abstract

The utility model discloses an accelerator capable of adjusting beam on line, which relates to the technical field of neutron application, and comprises a host frame, two ends of the host frame are respectively provided with a fixed chamber and a movable chamber, the fixed chamber is communicated with the movable chamber through a variable chamber, the fixed chamber is fixedly connected with the host frame, and the movable chamber is fixedly connected with the fixed chamber. The moving chamber is connected with the host frame in a sliding manner; a driving mechanism is arranged on the main machine frame, and the driving mechanism is located below the variable cavity and fixedly connected with the variable cavity or the movable cavity. The accelerator capable of adjusting the beam on line is reasonable in design and novel in scheme, solves the problems that in an existing neutron source acceleration device, a cavity needs to be detached for adjusting the distance from the plasma source to the target, and operation is inconvenient, and is adjustable in distance from the plasma source to the target and convenient to operate.

Description

Technical Field

[0001] This utility model relates to the field of neutron application technology, specifically to an accelerator with an online adjustable beam. Background Technology

[0002] During neutron source experiments, the size of the generated beam spot varies depending on the distance between the target and the plasma electrode. When the distance between the target and the plasma electrode is relatively short, the generated beam spot is smaller; when the distance between the target and the plasma electrode is relatively long, the generated beam spot is larger.

[0003] When designing related experiments, the experimenters need to adjust the size of the beam spot according to the actual needs, that is, adjust the distance between the plasma electrode and the target. Currently, the way to adjust the distance between the plasma electrode and the target is generally to increase or decrease the size of the spacer sleeve. However, this adjustment method requires disassembling the chamber each time it is adjusted, which is inconvenient. Moreover, each time the chamber is disassembled, it will destroy the vacuum environment in the original chamber and increase the debugging cycle (generally, vacuum environment recovery and equipment aging take ≥3 days). Utility Model Content

[0004] The purpose of this invention is to solve the technical problem of inconvenient adjustment of the distance between the plasma electrode and the target in the prior art. This invention provides the following technical solution:

[0005] An accelerator with an online adjustable beam includes a main frame, with a fixed chamber and a movable chamber at each end of the main frame, which are connected by a variable chamber. The fixed chamber is fixedly connected to the main frame, and the movable chamber is slidably connected to the main frame. A drive mechanism is provided on the main frame, which is located below the variable chamber and fixedly connected to either the variable chamber or the movable chamber.

[0006] The main frame is provided with a support member, the lower part of which is fixedly connected to the main frame and the upper part is slidably connected to the movable chamber; or, the lower part of which is slidably connected to the main frame and the upper part is fixedly connected to the movable chamber.

[0007] The drive mechanism includes a drive motor and a ball screw assembly. The drive motor is fixedly mounted on the main frame. One end of the lead screw of the ball screw assembly is fixedly connected to the output end of the drive motor, and the other end is fixedly connected to the main frame via a flange. The nut of the ball screw assembly is fixedly connected to the variable chamber and / or the movable chamber.

[0008] Preferably, the output end of the drive motor is fixedly connected to the active turntable, the active turntable is connected to the driven turntable via a conveyor belt, and the driven turntable is fixedly connected to one end of the ball screw pair lead screw.

[0009] Preferably, the output end of the drive motor is fixedly connected to the drive gear plate, the drive gear plate is connected to the driven gear plate through a transmission chain, and the driven gear plate is fixedly connected to one end of the ball screw pair screw.

[0010] The outer wall of the variable chamber is a corrugated pipe.

[0011] Preferably, both sides of the variable chamber are fixedly connected to the variable chamber and the movable chamber by screws.

[0012] A plasma electrode is fixedly installed on the side of the movable chamber away from the fixed chamber.

[0013] A target assembly is provided inside the fixed chamber, and the plasma electrode is arranged opposite to the target assembly.

[0014] A vacuum pump is fixedly installed on the main frame below the fixed chamber, and the vacuum pump is in communication with the fixed chamber.

[0015] Beneficial effects:

[0016] This invention uses a drive mechanism to move the movable chamber on the main frame. During movement, the overall space of the chamber is adjusted and supplemented by a variable chamber, ensuring the airtightness of the entire device. This invention features a reasonable structural design and novel solution, overcoming the problem in existing neutron source accelerators where adjusting the distance between the plasma source and the target requires disassembling the chamber, which is inconvenient. It provides an accelerator with adjustable plasma source-to-target distance, convenient operation, and online beam adjustment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0020] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0021] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0022] See Figure 1 An accelerator with an online adjustable beam includes a main frame 1. A fixed chamber 2 and a movable chamber 3 are respectively located at both ends of the main frame 1. The fixed chamber 2 is fixedly connected to the main frame 1, and the movable chamber 3 is slidably connected to the main frame 1. The fixed chamber 2 and the movable chamber 3 are connected via a variable chamber 4. The fixed chamber 2 is fixedly connected to the main frame 1, and the movable chamber 3 is slidably connected to the main frame 1. A drive mechanism 5 is provided on the main frame 1. The drive mechanism 5 is located below the variable chamber 4 and fixedly connected to the variable chamber 4; or, the drive mechanism 5 is located below the variable chamber 4 and fixedly connected to the movable chamber 3. The drive mechanism 5 is connected to a control panel, which is used to control the operation of the drive mechanism 5. The main frame 1 is used to install components such as the fixed chamber 2, the movable chamber 3, the variable chamber 4, and the drive mechanism 5. The drive mechanism 5 is used to drive the variable chamber 4 or the movable chamber 3 to move. When the drive mechanism 5 is fixedly connected to the variable chamber 4, the drive mechanism 5 is used to drive the variable chamber 4 to move, thereby driving the movable chamber 3 to move. When the drive mechanism 5 is fixedly connected to the movable chamber 3, the drive mechanism 5 is used to drive the variable chamber 4 to move, thereby driving the movable chamber 3 to move.

[0023] The main frame 1 is provided with a support member 6, which is used to support the movable chamber 3 and to support the relative movement between the movable chamber 3 and the main frame 1.

[0024] In one embodiment of this utility model, the lower part of the support member 6 is fixedly connected to the main frame 1, and the upper part is slidably connected to the movable chamber 3. At this time, the support member 6 supports the movable chamber 3. When the movable chamber 3 moves, sliding occurs between the movable chamber 3 and the support member 6, resulting in relative movement between the support member 6 and the movable chamber 3.

[0025] In one embodiment of this utility model, the lower part of the support member 6 is slidably connected to the main frame 1, and the upper part is fixedly connected to the movable chamber 3. At this time, the support member 6 supports the movable chamber 3. When the movable chamber 3 moves, the movement of the movable chamber 3 drives the support member 6 to move, and the support member 6 slides with the main frame 1, and relative movement is found between the support member 6 and the main frame 1.

[0026] The outer wall of the variable chamber 4 is a corrugated pipe, which has the characteristic of being expandable and contractible. Both sides of the variable chamber 4 are fixedly connected to the movable chamber 3 by screws.

[0027] The drive mechanism 5 includes a drive motor 51 and a ball screw assembly 52. ​​The drive motor is fixedly mounted on the main frame 1. One end of the lead screw of the ball screw assembly 52 is fixedly connected to the output end of the drive motor 51, and the other end is fixedly connected to the main frame 1 via a flange. The nut of the ball screw assembly 52 is fixedly connected to the variable chamber 4 and / or the movable chamber 3. The ball screw assembly 52 is used to convert the rotation of the output end of the drive motor 51 into linear motion. The end of the variable chamber 4 connected to the movable chamber 3 can be fixedly connected to the nut of the ball screw assembly 52, or the movable chamber 3 can be fixedly connected to the nut of the ball screw assembly 52, or the nut of the ball screw assembly 52 can be fixedly connected to both the variable chamber 4 and the movable chamber 3 via a flange. The drive motor 51 is connected to the control panel.

[0028] In one embodiment of this utility model, the output end of the drive motor 51 is fixedly connected to the active turntable 53. The active turntable 53 is connected to the driven turntable 55 via a conveyor belt 54. The driven turntable 55 is fixedly connected to one end of the lead screw of the ball screw pair 52. When the drive motor 51 rotates, it drives the active turntable 53 to rotate. The rotation of the active turntable 53 drives the rotation of the driven turntable 55 via the conveyor belt 54. The rotation of the driven turntable 55 drives the lead screw of the ball screw pair 52 to rotate. The lead screw of the ball screw pair 52 causes the nut of the ball screw pair 52 to move relative to the lead screw of the ball screw pair 52. The nut of the ball screw pair 52 causes the variable chamber 4 and / or the movable chamber 3 to move together. The distance of movement is compensated by the extension and retraction of the bellows.

[0029] In one embodiment of this utility model, the output end of the drive motor 51 is fixedly connected to the active gear disk, the active turntable 53 is connected to the driven gear disk via a transmission chain, and the driven gear disk is fixedly connected to one end of the lead screw of the ball screw pair 52. When the drive motor 51 rotates, it drives the active gear disk to rotate. The rotation of the active gear disk drives the rotation of the driven gear disk via the transmission chain. The rotation of the driven gear disk drives the lead screw of the ball screw pair 52 to rotate. The lead screw of the ball screw pair 52 causes the nut of the ball screw pair 52 to move relative to the lead screw of the ball screw pair 52. The nut of the ball screw pair 52 causes the variable chamber 4 and / or the movable chamber 3 to move together. The distance of movement is compensated by the expansion and contraction of the bellows.

[0030] A plasma electrode 7 is fixedly installed inside the movable chamber 3 on the side away from the fixed chamber 2. A target assembly 8 is provided inside the fixed chamber 2, and the plasma electrode 7 is arranged opposite to the target assembly 8.

[0031] Below the fixed chamber 2, a vacuum pump 9 is fixedly installed on the main frame 1, and the vacuum pump 9 is connected to the fixed chamber 2. The vacuum pump 9 is used to evacuate the fixed chamber 2.

[0032] The working principle of this utility model is as follows:

[0033] When the distance between the plasma electrode 7 and the target assembly 8 needs to be adjusted according to requirements, the drive motor 51 is activated. The rotation of the drive motor 51, because the output end of the drive motor 51 is fixedly connected to the ball screw pair 52, or the output end of the drive motor 51 is connected to the ball screw pair 52 through a gear disk transmission (see one embodiment for the working principle), or the ball screw pair 52 is connected to the ball screw pair 52 through a turntable transmission (see one embodiment for the working principle), drives the lead screw of the ball screw pair 52 to rotate. The rotation of the lead screw of the ball screw pair 52 causes the nut of the ball screw pair 52 to move relative to the lead screw of the ball screw pair 52. The movement of the nut of the ball screw pair 52 causes the variable chamber 4 and / or the movable chamber 3 to move. The movement of the variable chamber 4 and / or the movable chamber 3 makes the distance between the movable chamber 3 and the fixed chamber 2 larger or smaller. This makes the distance between the plasma electrode 7 and the target assembly 8 adjustable. By making the distance between the plasma electrode 7 and the target assembly 8 adjustable, the size of the beam spot can be controlled.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An accelerator with an online adjustable beam, characterized in that, The system includes a main frame (1), with a fixed chamber (2) and a movable chamber (3) at each end. The fixed chamber (2) and the movable chamber (3) are connected by a variable chamber (4). The fixed chamber (2) is fixedly connected to the main frame (1), and the movable chamber (3) is slidably connected to the main frame (1). The main frame (1) is provided with a drive mechanism (5), which is located below the variable chamber (4) and fixedly connected to either the variable chamber (4) or the movable chamber (3).

2. The accelerator with online adjustable beam as described in claim 1, characterized in that, The main frame (1) is provided with a support member (6), the lower part of the support member (6) is fixedly connected to the main frame (1), and the upper part is slidably connected to the movable chamber (3); or, the lower part of the support member (6) is slidably connected to the main frame (1), and the upper part is fixedly connected to the movable chamber (3).

3. An accelerator with an online adjustable beam as described in claim 1, characterized in that, The drive mechanism (5) includes a drive motor (51) and a ball screw pair (52). The drive motor is fixedly mounted on the main frame (1). One end of the lead screw of the ball screw pair (52) is fixedly connected to the output end of the drive motor (51), and the other end is fixedly connected to the main frame (1) through a flange. The nut of the ball screw pair (52) is fixedly connected to the variable chamber (4) and / or the movable chamber (3).

4. An accelerator with an online adjustable beam as described in claim 3, characterized in that, The output end of the drive motor (51) is fixedly connected to the active turntable (53), the active turntable (53) is connected to the driven turntable (55) through the conveyor belt (54), and the driven turntable (55) is fixedly connected to one end of the ball screw pair (52).

5. An accelerator with an online adjustable beam as described in claim 4, characterized in that, The output end of the drive motor (51) is fixedly connected to the active gear plate, the active turntable (53) is connected to the driven gear plate through the transmission chain, and the driven gear plate is fixedly connected to one end of the ball screw pair (52).

6. An accelerator with an online adjustable beam as described in claim 1, characterized in that, The outer wall of the variable chamber (4) is a corrugated pipe.

7. An accelerator with an online adjustable beam as described in claim 6, characterized in that, Both sides of the variable chamber (4) are fixedly connected to the variable chamber (4) and the movable chamber (3) by screws.

8. An accelerator with an online adjustable beam as described in claim 1, characterized in that, A plasma electrode (7) is fixedly installed inside the movable chamber (3) on the side away from the fixed chamber (2).

9. An accelerator with an online adjustable beam as described in claim 8, characterized in that, A target assembly (8) is provided inside the fixed chamber (2), and the plasma electrode (7) is arranged opposite to the target assembly (8).

10. An accelerator with an online adjustable beam as described in claim 1, characterized in that, Below the fixed chamber (2), a vacuum pump (9) is fixedly installed on the main frame (1), and the vacuum pump (9) is connected to the fixed chamber (2).

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