Ion thruster beam test system based on Faraday probe array

Abstract

The present invention discloses an ion thruster beam test system based on a Faraday probe array. According to the present invention, the Faraday probes are arranged in a surface array manner, all probe test signals are acquired synchronously, the data information amount is large, and the whole test and the data processing can be finished usually in only several minutes. A shielding outer sleeve is arranged at the outer side of an ion current catch tray of each Faraday probe and is used to shield the stray ions flying to the side surface of the ion current catch tray, thereby guaranteeing that the ions are only collected on the right side of the ion current catch tray. The shielding outer sleeve is directly and electrically connected with a disc-type metal support by the metal contact, so that a bias voltage can be supplied to the disc-type metal support by just one conducting wire, and the biggest advantages of the mode are that: the number of the probe leads is reduced substantially, the structure is simplified, and the reliability is improved.

Description

technical field [0001] The invention relates to the technical field of ion thruster beam current testing, in particular to an ion thruster beam current testing system based on a Faraday probe array. Background technique [0002] The ion thruster is the core unit of the ion propulsion system to generate thrust. In the development and testing of the ion thruster, it is necessary to test and analyze its beam distribution. By processing the beam distribution test data, the beam divergence angle, thruster Performance parameters such as vector deflection angle. [0003] At present, the Faraday probes used to measure the beam divergence angle and thruster vector deflection angle are generally point distribution or line distribution, and the collected data is not enough to reflect the beam current distribution, so multiple measurements are required. Therefore, it can be considered to arrange Faraday probes in a surface array. Moreover, when designing the structure, it is also nece...

AI Technical Summary

Problems solved by technology

[0003] At present, the Faraday probes used to measure the beam divergence angle and the thruster vector deflection angle are generally point distribution or line distribution, and the collected data is not enough to reflect the beam current distribution, so multiple measurements are required

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