Eccentric particle collecting device with rotated magnetic field

Abstract

The invention discloses an eccentric particle collecting device with a rotated magnetic field. Two magnets are used for exerting a horizontal magnetic field, so that the particles injected at a lower particle injection end rotate under the effect of the magnetic field, and the rotating plane is vertical to a magnetic field direction; and meanwhile, the particle rotation semi-diameter and the particle energy are in direct proportion; and multiple particle collecting blades close to the particle injection end are orderly arranged at a horizontal direction at one side of the rotating direction from high to low, and the particle collecting blades collect the particles with gradually reduced energies from high to low. The eccentric multi-stage collector blades are used for performing the particle collection, the injected particles rotate under the effect of the magnetic field and deviate from an entry hole of the particle injection end; and meanwhile, if the secondary particles produced through partial collision are in counter rotation reflection from the flank to the entry hole direction, the rotation semi-diameter is greatly reduced due to the magnetic field effect, and majority of secondary particles cannot return to the entry hole position, thereby lowering the reflux rate, and improving the particle collecting efficiency.

Description

technical field [0001] The invention belongs to the technical field of particle collection, and more specifically relates to traveling wave tubes, back wave tubes, klystrons, gyrotrons, free electron lasers, Oro tubes, terahertz maser vacuum electronic devices, and particle linear accelerators Particle collection devices used in vacuum particle devices such as cyclotrons and synchrotron radiation machines Background technique [0002] A particle collection device that must be used in most vacuum devices, including traveling wave tubes, return wave tubes, and linear accelerators. The main function of the particle collection device is to collect the particles that have completed the interaction, that is, to recover the remaining energy, reduce particle radiation and backflow, and enhance heat dissipation. Multistage step-down collectors are often used when the collector and overall device efficiency need to be improved. [0003] Most of the existing particle collection devic...

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Problems solved by technology

[0005] The object of the present invention is to overcome the deficiencies of high backflow rate and low collection efficiency of the axisymmetric particle collection device in the prior art, and provide an eccentric particle collection device with magnetic field rotation to reduce the backflow rate and improve particle collection efficiency, thereby Improve the overall efficiency and power of vacuum devices

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