title: Semiautomatic liquid helium transfer controller.
abstract: The controller described here allows liquid helium transfers of long duration into cryostats with minimum supervision. Dewar pressure is maintained by a controlled electrical heater that shuts off when the Dewar is empty.
authors.affiliation: Department of Physics, University of Waterloo, Waterloo, Ontario, Canada.
authors.forename: J
authors.initials: J
authors.lastname: Vanderkooy
authors.forename: C S
authors.initials: CS
authors.lastname: Kang