Accelerator and beam current path online monitoring device

Abstract

The invention discloses a beam current path online monitoring device. A beam current channel used for passing electron current is arranged in the middle of an annular diaphragm; a plurality of temperature sensors are uniformly arranged on the annular diaphragm in the peripheral direction; the distance from each temperature sensor to the center of the annular diaphragm is identical; the center of the annular diaphragm is right aligned with the beam current channel; signals of the temperature sensors are transmitted to a monitor. When the electron beam passes through the center position of the annular diaphragm, the peripheral temperature of the annular diaphragm basically keeps identical; if the electron beam deviates, the distance from each temperature sensor changes; the monitor can judge whether the electron beam deviates or not according to the monitoring temperature change of each temperature sensor. The annular diaphragm is sleeved and arranged in the beam current passage; no influence is generated on the normal operation of electrons; the online monitoring can be realized; the annular diaphragm forms one part of the beam current passage. The scheme can be used for measuring whether the whole electron beam is in the center or not. The invention also provides an accelerator comprising the beam current path online monitoring device.

Description

technical field [0001] The invention relates to the technical field of accelerators, and further relates to an online monitoring device for a flow path. In addition, the present invention also relates to an accelerator. Background technique [0002] The electron accelerator is the basic equipment for the application of radiation technology. By artificial means, the electrons are controlled by the magnetic field force and accelerated by the electric field force to achieve high energy and be drawn out for application. It can provide high-energy, high-power, and good-quality electron beams. [0003] The electron gun of the electron accelerator is the source of the electron beam. The electrons emitted by its filament are drawn out to the acceleration tube through the anode. The electron beam is accelerated by a series of electrodes or microwave electric field in the acceleration tube to obtain higher energy. The electromagnetic field is used to guide and constrain it so that it...

AI Technical Summary

Problems solved by technology

[0004] The electron beam needs to be kept in the center. The existing technology detects the position of the electron spot at the position where the electron beam is finally extracted, and judges whether the electron beam is centered by hitting the beam spot. However, it can only detect whether the electron beam is centered when the electron is extracted, and cannot guarantee that the electron beam The whole is kept in the center; in addition, the electron beam cannot be detected by beam spotting during production and use, and online detection cannot be realized, and the timeliness of detection cannot be guaranteed.

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