Fermilab Central Helium Liquefier System Upgrade
A significant upgrade to the Fermilab Central Helium Liquefier (CHL) facility’s 4000 liters/hour helium system has been made to support the Laboratory’s Tevatron superconducting accelerator. The upgrade includes a second helium liquefier with a rated capacity of 5400 liters/hour, a fourth reciprocating compressor rated at 750 grams/second, and an improved cryogenic distribution system including liquid helium dewars and pumps. The system design and operating experience to date are discussed.
KeywordsLiquid Helium Labyrinth Seal Cryogenic System Cryogenic Engineer Fermi National Accelerator Laboratory
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