A structure of an electron multiplier and an assembly method thereof

Abstract

The invention discloses a structure and an assembly method of an electron multiplier, An electron multiplier is composed of a low substrate, an upper substrate motherboard, an upper substrate assistedplate, a dozen electrode assembly and a collector assembly; A plane-type voltage dividing resistor and a flat-type transition electrode are arranged on the upper surface of the upper substrate main board, A main board of that upper substrate is provide with a dozen mounting hole corresponding to an electrical connection hole of the dozen assembly, A surface-type transition electrode is electrically connected with that mounting hole of the dozen electrode, A planar voltage dividing resistor and a planar transition electrode are partially overlapped and electrically connected, Then, the dozen electrode assembly and the collector assembly are fixed between the lower substrate and the upper substrate main board, and the upper substrate auxiliary board is fixed on the upper end of the upper substrate main board, so that the space between the upper substrate auxiliary board and the upper substrate main board is reduced, the resistor film layer and the transition electrode film layer are partially overlapped, and the electrical connection is very reliable; The voltage dividing resistor, the transition electrode and the upper substrate main board are integrated into one body, and each voltage dividing resistor need not be soldered one by one, and the structure is compact, so that the assembly link of the soldering resistor is reduced.

Description

technical field [0001] The invention belongs to the field of electronic science and technology, and in particular relates to a structure and an assembly method of an electron multiplier. Background technique [0002] The main function of the electron multiplier is to amplify weak signals, detect electrons, ions, charged particles, vacuum ultraviolet rays and soft X-rays, etc., and have important applications in the fields of aerospace, mass spectrometry, space exploration and satellite communications. [0003] A general dynode electron multiplier at least includes several dynode-level components, a collector-level component and some voltage-dividing resistors. In order to fix the relative positional relationship between the plates, the assembly of the electron multiplier also requires fasteners such as insulating ceramic plates, cylindrical supports, gaskets, and long and short screws. The assembly process of this electron multiplier includes at least two links: ① assembly ...

AI Technical Summary

Problems solved by technology

Since the electron multiplier works in a vacuum environment, its components must also be able to withstand the baking environment that the vacuum process must experience, and have good vacuum characteristics. The cost of the voltage dividing resistor that meets this requirement is very high

And the process is complicated

Images