A Superconducting (Nb-Ti) Liquid Helium Level Detector [Book Chapter]

Conference · Sun Jun 15 20:00:00 EDT 1969 · Advances in Cryogenic Engineering Proceedings of the 1969 Cryogenic Engineering Conference University of California at Los Angeles, June 16–18, 1969

DOI:https://doi.org/10.1007/978-1-4757-0513-3_18· OSTI ID:4796582

Efferson, K. R. ^[1]

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1. Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Superconducting-coil systems are usually contained in metal dewars so that the liquid helium level cannot be viewed directly. The liquid level can be monitored at fixed points by means of various level detectors. However, a simple detector which can give a continuous indication of liquid level is more desirable than fixedpoint detectors. A linear liquid helium level detector which uses a superconducting element of annealed Ta and another using a Pb-Sn alloy element fulfill the requirement of simplicity; however, neither of them can be expected to work except in very low magnetic fields. Another linear detector which relies on the measurement of the small capacitance difference between liquid helium and gaseous helium should work in a magnetic field ; however, the associated electronics is complicated and the system must be constructed with great care.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: US Atomic Energy Commission (AEC)
• NSA Number: NSA-23-041135
• OSTI ID: 4796582
• Report Number(s): ORNL-TM--2665; CONF-690623--1
• Journal Information: Advances in Cryogenic Engineering Proceedings of the 1969 Cryogenic Engineering Conference University of California at Los Angeles, June 16–18, 1969, Journal Name: Advances in Cryogenic Engineering Proceedings of the 1969 Cryogenic Engineering Conference University of California at Los Angeles, June 16–18, 1969
• Publisher: Springer
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DESIGN
GAGES
HELIUM
HELIUM/level detector for liquid
design and performance of superconducting
LEVEL INDICATORS/design and performance of superconducting liquid helium
LEVELS
LIQUIDS
N26400* --Instrumentation--Miscellaneous Instruments & Components
OPERATION
PERFORMANCE
SUPERCONDUCTIVITY