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Pollution-free electron multiplier assembly system and assembly method thereof

An electron multiplier and assembly system technology, which is applied in the manufacture of electrode systems, installation/disassembly of discharge tubes/lamp auxiliary devices, circuits, etc., can solve the problems of complex assembly and many parts of electron multipliers, and achieve the effect of reducing pollution

Inactive Publication Date: 2015-02-18
LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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  • Abstract
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Problems solved by technology

[0003] However, the electron multiplier has many parts and the assembly is relatively complicated. Therefore, in addition to shortening the assembly time by determining the assembly sequence and skilled operation, another protective measure is no atmospheric treatment.

Method used

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  • Pollution-free electron multiplier assembly system and assembly method thereof

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Embodiment Construction

[0028] Embodiments of the present invention will be described below with reference to the drawings.

[0029] Such as figure 1 As shown, the electron multiplier pollution-free assembly system includes: main box 2, lighting system 1, operating gloves 3, electric welding machine control system 4, vacuum pumping system 5, electric welding machine 6, control system 7, transition chamber 8 and gas purification system.

[0030] The main box body 2 provides a closed space, which requires excellent sealing performance, and good sealing performance is the key to ensure the performance and safety of the equipment. The side of the main box is made of corrosion-resistant stainless steel, and the front viewing window is made of transparent tempered glass.

[0031] The interior of the main box 2 is provided with a lighting system 1 , operating gloves 3 and an electric welding machine 6 . in,

[0032] The illumination system 1 is located at the upper front part of the main cabinet and ado...

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Abstract

The invention discloses a pollution-free electron multiplier assembly system and an assembly method thereof. In the scheme, a vacuum pumping system and a gas purifying system are used for maintaining working pressure and a gas environment all the time during assembly, so that an electron multiplier assembly process is conducted in a non-atmospheric environment, and pollution of the atmosphere to a dynode secondary electron emission surface can be reduced. Moreover, dynodes can be protected by continuously-flowing nitrogen flow. Additionally, all parts of an electron multiplier enter a main cabinet from a transition bin, the assembled electron multiplier is conveyed out of the main cabinet from the transition bin, and the transition bin is subjected to air purification before the parts in the transition bin enter the main cabinet, so that removing gas impurities carried by the parts in advance is guaranteed, and cleanliness of the working environment of the main cabinet is further guaranteed.

Description

technical field [0001] The invention relates to the technical field of electron multiplier assembly, in particular to an electron multiplier pollution-free assembly system and an assembly method using the system. Background technique [0002] The electron multiplier is a key component of the cesium atomic clock, which is mainly used to amplify the cesium ion current signal and then generate a frequency discrimination signal. Through literature research and preliminary experiments, it is found that the electron multiplier is exposed to the atmospheric environment for 3 hours, and its multiplication performance is reduced by 50%. This is because the existing assembly process is first assembled in the atmosphere and then vacuumized. During the assembly process, the electron multiplier is exposed to the air for a long time. Since the dynode in the electron multiplier is very sensitive to moisture, etc. The assembly process should be as fast as possible to avoid prolonged exposu...

Claims

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Application Information

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IPC IPC(8): H01J9/00
CPCH01J9/003
Inventor 李得天李晨王多书张玲
Owner LANZHOU INST OF PHYSICS CHINESE ACADEMY OF SPACE TECH
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