Neutron target device of annular cooling accelerator

Abstract

The invention discloses a neutron target device of an annular cooling accelerator. According to the neutron target device, a target sheet annular cooling mode is adopted, and the problem that neutron energy is reduced due to the fact that a traditional back face cooling structure blocks generated neutrons is solved; and meanwhile, the neutron target is forcibly cooled by adopting a mode of adjusting the flow of the cooling liquid by combining a high-heat-conductivity material with a temperature controller, so that the risk of over-high temperature of the neutron target is reduced.

Description

Technical Field

[0001] The invention relates to the field of nuclear technology and application, and in particular to a neutron target device of an annular cooling accelerator. Background Art

[0002] Commonly used accelerator neutron targets are tritium targets or deuterium targets. The temperature of such neutron targets cannot exceed 200°C when in use; therefore, a cooling device needs to be installed on the back of the neutron target to directly cool the neutron target. This method has a better cooling effect and can control the temperature of the neutron target to a few tens of degrees Celsius. However, due to the certain thickness of the coolant on the back of the neutron target and the complex cooling structure on the back, the neutron energy generated by the accelerator neutron source is slowed down, resulting in inaccurate measurement data when using neutron energy to measure nuclear data. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a ring-shaped cooling accelerator neutron target device.

[0004] The present invention provides a ring-shaped cooling accelerator neutron target device, which is characterized in that the neutron target device consists of a target chamber shell, a cooling ring, a neutron target, a coolant circulation system, a coolant and a heat sink; the neutron target is in a circular sheet shape, and its cross section is consistent with the target chamber shell. The neutron target is vertically installed inside the target chamber shell, the front side of the neutron target is the side facing the target shooting direction, and the back side of the neutron target is the side away from the target shooting direction, and the back side is exposed to the atmosphere;

[0005] The cooling ring is arranged outside the target chamber shell along the circumference of the neutron target. The target chamber shell is provided with upper and lower heat sinks in the vertical direction of the cooling ring close to the neutron target. The upper and lower heat sinks are located inside the cooling ring and divide the cooling ring into flow channels along the circumference of the neutron target.

[0006] The inlet flow channel and the outlet flow channel of the cooling ring are connected to the coolant circulation system, and the coolant circulates in the cooling ring and the coolant circulation system.

[0007] Furthermore, a thermometer is installed on the back, and the temperature controller is connected to the thermometer and the coolant circulation system via a data cable.

[0008] Furthermore, the target chamber shell, the cooling ring and the heat sink are an integrated structure.

[0009] Furthermore, the target chamber shell, cooling ring, and heat sink are made of aluminum alloy or other materials with high thermal conductivity.

[0010] Furthermore, the temperature controller transmits the neutron target temperature data measured by the thermometer to the coolant circulation system, and the coolant circulation system adjusts the flow rate of the coolant to control the neutron target below 200° C. Further, in order to reduce the temperature of the neutron target, it can be achieved by increasing the flow rate of the coolant and adding heat sinks, the flow rate of the coolant is adjustable, and the number of heat sinks is set to multiple.

[0011] The beneficial effects of the present invention are as follows:

[0012] The annular cooling accelerator neutron target device of the present invention adopts a side annular cooling method, that is, the temperature of the neutron target is controlled not to exceed 200°C, and the auxiliary cooling device on the back of the neutron target is removed, ensuring that the energy of the generated neutrons does not change. When the cooling liquid of the annular cooling accelerator neutron target device of the present invention is water and the flow rate is 0.5L / min, the temperature of the neutron target is maintained below 60°C under the bombardment of a deuterium ion beam with a power of 60W. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view of a ring-shaped cooling accelerator neutron target device according to an embodiment of the present invention;

[0014] Figure 2 A side view of a ring-shaped cooling accelerator neutron target device according to an embodiment of the present invention;

[0015] In the figure, 1. target chamber shell, 2. cooling ring, 3. neutron target, 4. thermometer, 5. temperature controller, 6. data transmission line, 7. coolant circulation system, 8. coolant, 9. heat sink. DETAILED DESCRIPTION

[0016] Example 1

[0017] The present invention is described in detail with reference to the accompanying drawings and Example 1.

[0018] like Figure 1 and Figure 2 As shown, the present invention provides a ring-shaped cooling accelerator neutron target device, characterized in that the neutron target device is composed of a target chamber shell 1, a cooling ring 2, a neutron target 3, a coolant circulation system 7, a coolant 8 and a heat sink 9; the neutron target 3 is in a circular sheet shape, and its cross section is consistent with the target chamber shell 1. The neutron target 3 is vertically installed inside the target chamber shell 1, the front side of the neutron target 3 is facing the target shooting direction, and the back side of the neutron target 3 is away from the target shooting direction, and the back side is exposed to the atmosphere;

[0019] The cooling ring 2 is arranged outside the target chamber housing 1 along the circumference of the neutron target 3. The target chamber housing 1 is provided with upper and lower heat sinks 9 in the vertical direction of the cooling ring 2 close to the neutron target 3. The upper and lower heat sinks 9 are located inside the cooling ring 2 and divide the cooling ring 2 into flow channels along the circumference of the neutron target 3.

[0020] The inlet flow channel and the outlet flow channel of the cooling ring 2 are connected to the cooling liquid circulation system 7 , and the cooling liquid 8 circulates in the cooling ring 2 and the cooling liquid circulation system 7 .

[0021] Furthermore, a thermometer 4 is installed on the back, and the temperature controller 5 is connected to the thermometer 4 and the coolant circulation system via a data line 6 .

[0022] Furthermore, the target chamber housing 1, the cooling ring 2, and the heat sink 9 are an integrated structure.

[0023] Furthermore, the target chamber housing 1, the cooling ring 2, and the heat sink 9 are made of aluminum alloy or other materials with high thermal conductivity.

[0024] Furthermore, the temperature controller 5 transmits the neutron target temperature data measured by the thermometer 4 to the coolant circulation system 7, and the coolant circulation system 7 adjusts the flow rate of the coolant 8, thereby controlling the neutron target 3 to be lower than 200°C.

[0025] Furthermore, in order to lower the temperature of the neutron target, it can be achieved by increasing the flow rate of the coolant and adding heat sinks. The flow rate of the coolant 8 is adjustable, and the number of heat sinks 9 is set to be multiple.

[0026] The working process of the device is as follows: the temperature value of the temperature controller 5 is set to 200°C, and the flow rate of the coolant 8 is adjusted to 10L / min; the heat of the ion beam is deposited on the neutron target, and is conducted to the coolant through the target chamber shell and the cooling ring, and is taken away by the coolant; the thermometer 3 measures the temperature on the neutron target and feeds back to the temperature controller 5 in real time. If the temperature of the neutron target exceeds 200°C, the temperature controller 5 controls the coolant circulation system 6 to increase the coolant flow rate, so that the temperature of the neutron target drops below 200°C, thereby achieving the purpose of lowering the temperature of the neutron tube target 2.

[0027] The present invention is described in detail above in combination with specific implementation methods and exemplary examples. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments; the above description cannot be understood as limiting the present invention. Those skilled in the art understand that, without departing from the spirit and scope of the present invention, the technical solution of the present invention and its implementation methods may be subjected to a variety of equivalent substitutions, modifications or improvements, all of which fall within the scope of the present invention; the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A ring-shaped cooling accelerator neutron target device, characterized in that: The neutron target device comprises a target chamber housing (1), a cooling ring (2), a neutron target (3), a coolant circulation system (7), a coolant (8) and a heat sink (9); the neutron target (3) is in the shape of a circular sheet, and its cross section is consistent with that of the target chamber housing (1); the neutron target (3) is vertically installed inside the target chamber housing (1); the front side of the neutron target (3) is facing the target shooting direction, and the back side of the neutron target (3) is away from the target shooting direction, and the back side is exposed to the atmosphere; The cooling ring (2) is arranged outside the target chamber shell (1) along the circumference of the neutron target (3); the target chamber shell (1) is provided with upper and lower heat sinks (9) in the vertical direction of the cooling ring (2) close to the neutron target (3); the heat sink (9) is located inside the cooling ring (2) and divides the cooling ring (2) into flow channels along the circumference of the neutron target (3); The inlet flow channel and the outlet flow channel of the cooling ring (2) are connected to the cooling liquid circulation system (7), and the cooling liquid (8) circulates in the cooling ring (2) and the cooling liquid circulation system (7).

2. The annular cooling accelerator neutron target device according to claim 1, characterized in that: A thermometer (4) is installed on the back, and a temperature controller (5) is connected to the thermometer (4) and the coolant circulation system via a data line (6).

3. The annular cooling accelerator neutron target device according to claim 1, characterized in that: The target chamber housing (1), the cooling ring (2) and the heat sink (9) are an integrated structure.

4. The annular cooling accelerator neutron target device according to claim 1, characterized in that: The target chamber shell (1), the cooling ring (2) and the heat sink (9) are made of aluminum alloy or other materials with high thermal conductivity.

5. The annular cooling accelerator neutron target device according to claim 2, characterized in that: The temperature controller (5) transmits the neutron target temperature data measured by the thermometer (4) to the coolant circulation system (7), and the coolant circulation system (7) adjusts the flow rate of the coolant (8), thereby controlling the neutron target (3) to be lower than 200°C.

6. The annular cooling accelerator neutron target device according to claim 1, characterized in that: The flow rate of the coolant (8) is adjustable, and the number of the heat sinks (9) is set to be multiple.

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