Electron multiplier testing device for incident electron source generation by adopting photoelectric method

Abstract

The invention discloses an electron multiplier testing device for incident electron source generation by adopting a photoelectric method, and belongs to the field of gain current test of electron multipliers. The electron multiplier testing device comprises a first working table, a first moving guide rail, an ultra-violet lamp holder, an ultra-violet lamp, a filter holder, a light filter, a ultra-violet transmission glass window, an insulating stand, a fixed station, a photocathode frame, a photocathode, a second working table, a second moving guide rail, an electron multiplier frame, an electron multiplier, a vacuum gage, a first flange, a second flange, a vacuum tank, an observation window, a high-voltage source, an electrometer, a molecular pump, a mechanical pump and a temperature-control system. The electron multiplier testing device adopts the photoelectric method for generation of the incident electron source, which has the advantages of simple structure, long service life, stable performance, low cost and the like, and the electron multiplier testing device takes the zinc film as the photocathode, which is simple in preparation, convenient to operate, and good in repeatability.

Description

technical field [0001] The invention relates to a test device for an electron multiplier that uses a photoelectric method to generate an incident electron source, in particular to a test device that uses ultraviolet light as an irradiation light source and uses a zinc film as a photocathode to generate incident electrons to test an electron multiplier. Multiplier gain current test field. Background technique [0002] Electron multipliers are the key components of small cesium atomic clocks. The production of small commodity cesium clocks is basically monopolized by the United States. The main products are 5071A cesium atomic clocks, etc. However, it is difficult to import such atomic clocks for military applications, which seriously restricts our military The development of navigation and positioning technology requires the development of cesium clocks. The development of high-performance small cesium atomic clocks can break the foreign embargo on high-precision cesium atom...

AI Technical Summary

Problems solved by technology

The current measurement device mainly uses electron gun as the incident electron source, but the electron gun has short life and high cost

Images