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CN-121477285-B - Electron accelerator beam calibration water absorption target device

CN121477285BCN 121477285 BCN121477285 BCN 121477285BCN-121477285-B

Abstract

The application relates to the technical field of beam calibration of accelerators, in particular to a beam calibration water absorption target device of an electronic accelerator, which comprises a suspension bracket, wherein one end of the suspension bracket is provided with a mounting platform, a calibration target is detachably arranged on the mounting platform, the calibration target comprises a detachable water tank which is filled with a liquid medium for absorbing beam energy and has no bubble inside, the water tank is horizontally arranged along the propagation direction of the beam of the electronic accelerator, the cross section of the water tank is vertical to the beam inflow direction, a regular hexagon honeycomb array measurement partition is formed in the water tank through a heat insulation partition plate, the regular hexagon honeycomb array measurement partition is further refined into an independent partition by matching with a net partition, a regular hexagon close-spread structure has no measurement blind area, the beam cross section can be completely covered, and meanwhile, the side length and the volume of all the partitions are consistent, and the standard of each measurement unit is ensured to be unified.

Inventors

  • YANG GUANG
  • ZHANG SHIBO
  • QI XINWEI

Assignees

  • 山东蓝孚高能物理技术股份有限公司

Dates

Publication Date
20260512
Application Date
20251215

Claims (9)

  1. 1. The beam calibration water absorption target device of the electronic accelerator comprises a suspension bracket (1) and is characterized in that one end of the suspension bracket (1) is provided with a mounting platform (2), and a calibration target (3) is detachably mounted on the mounting platform (2), wherein the suspension bracket (1) has a rotary folding function and is used for realizing carrying, positioning and posture adjustment of the calibration target (3) so as to rapidly switch the relative positions of the calibration target (3) and the beam of the electronic accelerator; the calibration target (3) comprises a detachable water tank (31) on the mounting platform (2), wherein the water tank (31) is filled with a liquid medium for absorbing beam energy, and no bubble exists in the water tank (31), the water tank (31) is horizontally arranged along the propagation direction of the electron accelerator beam, and the cross section of the water tank is perpendicular to the beam inflow and injection direction; the calibration target (3) adopts zonal measurement, and a plurality of measurement zones (331) are arranged at intervals in the beam cross section direction of the water tank (31); The calibration target (3) comprises a separation plate (33) arranged in the water tank (31), the separation plate (33) separates the interior of the water tank (31) into a plurality of independent measurement areas (331), and the plurality of measurement areas (331) are uniformly distributed along the cross section direction of the beam; the partition plate (33) is made of a heat insulation material and is used for blocking heat transfer between different measurement areas (331) and avoiding temperature interference between the areas.
  2. 2. The electron accelerator beam calibration water absorption target device according to claim 1, wherein a cavity (34) positioned at the lower end of the partition plate (33) is arranged in the water tank (31), and the bottoms of the measurement partitions (331) are communicated with the cavity (34); A piston plate (341) is arranged in the cavity (34) in a sliding mode, a push rod (35) is arranged at the bottom of the piston plate (341), the lower end of the push rod (35) penetrates through the bottom of the water tank (31) in a sliding mode, a reciprocating threaded section (351) is formed in the push rod (35), and an adjusting gear (36) in threaded fit with the reciprocating threaded section (351) is arranged at the bottom of the water tank (31) in a rotating mode.
  3. 3. The electron accelerator beam calibration water absorption target device according to claim 1, wherein the measurement areas (331) are hexagonal, the measurement areas (331) are distributed in a regular hexagonal honeycomb array, the side lengths of adjacent hexagonal measurement areas (331) are equal, and the volumes of all the hexagonal measurement areas (331) are identical.
  4. 4. The electron accelerator beam calibration water absorption target device according to claim 1, wherein a mesh partition (37) is arranged in the measurement partition (331), and the mesh partition (37) is of a hollowed-out mesh structure; and the reticular partition (37) is in sealing connection with the inner wall of the measurement partition (331) to form a partition area (371), and each partition area (371) is independently sealed and has no liquid intercommunication.
  5. 5. The electron accelerator beam calibration water absorption target device according to claim 4, wherein the piston plate (341) is provided with seat cushions (38) corresponding to the measuring areas (331) one by one, and the seat cushions (38) are used for sealing the bottoms of the measuring areas (331).
  6. 6. The electron accelerator beam calibration water absorption target device according to claim 5, wherein the seat cushion is provided with a reticular groove (381) corresponding to the reticular partition (37).
  7. 7. The electron accelerator beam calibration water absorption target device according to claim 4, wherein the cushion is provided with upright rods (39) which are in one-to-one correspondence with the spacing areas (371), and two ends of the upright rods (39) are provided with temperature sensors (391).
  8. 8. The beam calibration water absorption target device of the electron accelerator according to claim 1, wherein the suspension bracket (1) comprises a suspension seat (11), one end of the suspension seat (11) is rotatably provided with a connecting frame (12), and the mounting platform (2) is detachably mounted at one end of the connecting frame (12).
  9. 9. The beam calibration water absorption target device of the electronic accelerator according to claim 1, wherein a screw rod (13) is arranged between the hanging seat (11) and a rotating point of the connecting frame (12) in a penetrating way, a driving gear (14) is arranged on the screw rod (13), and a transmission gear (15) meshed with the driving gear (14) is rotatably arranged on the hanging seat (11).

Description

Electron accelerator beam calibration water absorption target device Technical Field The application relates to the technical field of accelerator beam calibration, in particular to a water absorption target device for calibrating beam of an electron accelerator. Background In the fields of industrial production, medical health and the like, the electron accelerator has high-efficiency irradiation capability and is widely applied to the fields of irradiation sterilization, material modification and the like. The beam calibration and debugging is a key link of the electron accelerator before being put into use and in the running process, and the core of the electron accelerator is to accurately measure parameters such as beam power, intensity and the like through a special device so as to ensure that the output performance of the accelerator meets the application requirements. The traditional water absorption target device needs to be manually carried in the whole course, the device needs to be manually lifted to a specified position of a beam offline (an electron beam output path) during calibration, and the device needs to be manually carried out of the beam offline after the calibration is completed. The device not only consumes a large amount of manpower, but also occupies limited maintenance channel space if temporarily stored near the beam off-line when in idle, and increases the workload of repeated transportation if thoroughly transferred to other storage areas, thereby forming double efficiency loss of time consuming transportation and space occupation. However, the prior art still has some drawbacks in calibrating the absorbing target for the accelerator beam water: 1. In practice, if the accelerator is of a high power type such as the high power type used for industrial mass sterilization, or the electron beam is pulsed (a burst of emissions), the endothermic reaction rate of water will be somewhat retarded. For example, the pulsed electron beam instantaneously releases a large amount of energy, the water cannot disperse the heat immediately, hot spots are formed locally (for example, the water temperature at the place where the electron beam hits suddenly rises, the surrounding is cool), the measured water temperature is not the average temperature, and the converted energy of the electron beam has errors. 2. The water absorbing target can only calculate the overall power and total energy of the electron beam, but it is not known whether the electron beam has a strong middle, weak sides, or a deflection in cross section. While in some situations (such as medical radiation therapy) it is not only necessary to know the total energy, but also whether the energy distribution is uniform (which would otherwise result in the patient locally absorbing too high or too low a dose). Based on this, in the statement of the above point of view, the prior art still has room for improvement in the way the accelerator beam water absorbing target is calibrated. Disclosure of Invention In order to solve the technical problems, the application provides an electron accelerator beam calibration water absorption target device, which adopts the following technical scheme: the beam calibration water absorption target device of the electronic accelerator comprises a suspension bracket, wherein one end of the suspension bracket is provided with a mounting platform, and a calibration target is detachably mounted on the mounting platform; The calibration target comprises a detachable water tank on the mounting platform, wherein the water tank is filled with a liquid medium for absorbing beam energy, and no bubble exists in the water tank; The calibration target adopts partition measurement, and a plurality of temperature measuring units are arranged in the beam flow transmission direction of the water tank at intervals. Preferably, the calibration target comprises a partition plate arranged in the water tank, the partition plate divides the interior of the water tank into a plurality of independent measurement partitions, and the plurality of measurement partitions are uniformly distributed along the beam flow transmission direction; The partition plate is made of a heat insulation material and is used for blocking heat transfer between different measurement partitions, so that temperature interference between the partitions is avoided. Preferably, a cavity positioned at the lower end of the partition plate is arranged in the water tank, and the bottoms of the measurement partitions are communicated with the cavity; The cavity is internally provided with a piston plate in a sliding manner, the bottom of the piston plate is provided with a push rod, the lower end of the push rod penetrates through the bottom of the water tank in a sliding manner, a reciprocating thread section is constructed on the push rod, and the bottom of the water tank is rotationally provided with an adjusting gear in threaded fit with the reciprocating