Resonant chamber axial electric field measurement device and measurement method thereof

Abstract

The invention discloses a resonant chamber axial electric field measurement device and a measurement method thereof. The device comprises a mechanical structure part and a measurement control part. The mechanical structure part comprises a body frame, pulleys, a driving structure, a pulling wire and a micro-disturbance member. The measurement control part comprises an existing module, an environment monitoring module and an analyzing module. The micro-disturbance member is arranged on the pulling wire in the vertical state, and through driving the pulling wire to move through the pulleys, movement of the micro-disturbance member in the central axis of a measured resonance chamber is ensured. Through an exciting module, an exciting signal is transmitted to the measured resonance chamber, and feedback signals when the micro-disturbance member are at different positions are acquired, thereby acquiring resonant frequency of the resonant chamber when the micro-disturbance member are at different positions, and obtaining the resonant chamber electric field strength at the current position according to the resonant frequencies of the resonant chamber when the micro-disturbance member is at different positions and the resonant frequency of the resonant chamber in the current environment. The resonant chamber axial electric field measurement device improves electric field strength accuracy through ensuring coaxiality between the movement track of the micro-disturbance member and the central axis of the measured resonance chamber.

Description

technical field [0001] The invention belongs to the field of electron linear accelerators, and more specifically relates to a resonant cavity axial electric field measuring device and a measuring method. Background technique [0002] Electron linear accelerators are not only used in basic scientific research such as high-energy physics, but also widely used in civilian fields. In medicine, medical linear accelerators with different energies are already operating in countries around the world to treat tumors with radiation. In the industrial field, electron linear accelerators can be used for industrial flaw detection and irradiation processing. In the field of agriculture, especially in the radiation processing of food and the cultivation of improved varieties, electron linear accelerators have been widely used. [0003] The resonant cavity is a key part of the linear accelerator. After the microwave power is fed, an electric field is excited inside the resonant cavity, th...

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Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a resonant cavity axial electric field measuring device and a measuring method, the purpose of which is to solve the problem that the existing measuring device cannot guarantee the coaxiality of the measuring probe and the resonating cavity. Technical problem of inaccurate measurement of axial electric field

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