Title :
Superconducting current transducer [for cable testing facility]
Author :
Kuchnir, M. ; Ozelis, J.P.
Author_Institution :
Fermi Nat. Accel. Lab., Batavia, IL, USA
fDate :
3/1/1991 12:00:00 AM
Abstract :
The construction and performance of an electric current meter that operates in liquid He and mechanically splits apart to permit replacement of the current carrying conductor are described. It permits the measurement of currents induced in a loop of superconducting cable and expeditious exchange of such loops. It is a key component for a short sample cable testing facility that requires no high-current power supplies or high-current leads. Its superconducting pickup circuit involves a nonmagnetic core toroidal split-coil that surrounds the conductor and a solenoid whose field is sensed by a Hall probe. This toroidal split-coil is potted inside another compensating toroidal split-coil. Currents of up to 10 kA can be measured with a precision of 150 mA
Keywords :
ammeters; cable testing; critical currents; electric current measurement; electric sensing devices; superconducting cables; superconducting devices; test facilities; 10 kA; Hall probe; compensating toroidal split-coil; construction; critical currents; electric current meter; loop of superconducting cable; nonmagnetic core toroidal split-coil; performance; short sample cable testing facility; solenoid; superconducting current transducer; superconducting pickup circuit; Current measurement; Hall effect devices; Power transformer insulation; Superconducting cables; Superconducting coils; Superconducting device noise; Superconducting magnets; Testing; Toroidal magnetic fields; Transducers;
Journal_Title :
Magnetics, IEEE Transactions on
