Precautions For Working in High Vacuum, Ultra-high Vacuum And Extremely High Vacuum Conditions

Precautions for working in high vacuum, ultra-high vacuum, and extremely high vacuum conditions

Several key considerations for operating in high, ultra-high, and extremely high vacuum conditions are related to system design, including the materials used. In addition, the condition of the system/chamber surface is also important and can be optimized by: ● Minimizing the area of the vacuum chamber surface; ● Welding only inside the cavity; ● Using materials with low desorption/degassing rates; ● Appropriate material pretreatment (e.g. electropolishing); ● Ensure that there are no internal gaps or small Spaces that are stuck (e.g. blind holes with threads) ● Reduce seals, feedthroughs, etc. ● Metal seal. The pre-treatment of the system is also important, such as baking, and the use of powder-free latex gloves to prevent fingerprint oil stains, as well as thorough cleaning to remove hydrocarbons, fillers, and other contaminants (both chemical and physical).

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