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Liquid nitrogen auto fill for temperature controlled cryogenic traps

P. F. Dennis, Alex Etchells, David Blomfield

Abstract

We describe the principle of operation and construction of an inexpensive, reliable system for the automated dispensing of liquid nitrogen from a single supply Dewar to multiple cryogenic traps. The system can be run under full computer control and in conjunction with existing designs of traps will allow unattended operation over long duty periods combined with programmed temperature cycles.

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Key concepts: Liquid nitrogen, Cryogenics, Cryogenic temperature, Nuclear engineering, Materials science, Temperature control, Nitrogen, Conjunction (astronomy)