Design of Highly-sensitive Current Monitor with Hts Squid and Hts Magnetic Shield
نویسنده
چکیده
A high-temperature superconducting (HTS) magnetic shield based on Bi(Pb)2-Sr2-Ca2-Cu3-Ox (Bi-2223) was fabricated by plasma spraying for the purpose of observing a somatosensory-evoked magnetic field generated from the human brain[1]. Recently, a Bi-2223 cylindrical magnetic shield was developed by dip-coating on a 99.9 % MgO ceramic substrate. A highly-sensitive current monitor using this HTS magnetic shield in combination with a HTS Superconducting QUantum Interference Device (SQUID) is being developed in the RIKEN RI beam factory for highaccuracy nondestructive measurement of faint beams such as a radioisotope beam.
منابع مشابه
Optimization of an HTS Induction/Synchronous Motor According to Changing of HTS Tapes Critical Current by Analytical Hierarchy Process
This paper represents the performance of a squirrel-cage High Temperature Superconducting Induction/ Synchronous Motor (HTS-ISM) based on nonlinear electrical equivalent circuit. The structure of the HTS-ISM is the same as that of the squirrel-cage type induction machine, and the secondary windings are fabricated by the use of the HTS wires. It has already been shown that based on the experimen...
متن کاملTri-axial Core Design of a Distribution System Class HTS Power Cable
A tri-axial HTS power cable has been proposed and developed to reduce the number of HTS wires because it has copper shield instead of HTS shield. However, it has a drawback which is an inherent imbalance problem due to an asymmetry configuration in the cable. The authors designed a 22.9 kV/50 MVA class tri-axial HTS cable. The inherent imbalance problem of the three-phase currents in the tri-ax...
متن کاملReduction of Radio Frequency Interference to HTS-dc-SQUID by Adding a Cooled Transformer
Effect of an addition of a cooled step-up transformer to a flux locked loop (FLL) circuit was studied to reduce indirect rf interference to HTS-dc-SQUID. First, we demonstrated that a noise level of an HTS-dcSQUID system using the FLL circuit with single room-temperature transformer could be easily degraded by radiation of rf electromagnetic wave to cables in the FLL circuit. It is thought that...
متن کامل2D Analytical Modeling of a Wholly Superconducting Synchronous Reluctance Motor
An analytical computation of the magnetic field distribution in a wholly superconducting synchronous reluctance motor is proposed. The stator of the studied motor consists of three-phase HTS armature windings fed by AC currents. The rotor is made with HTS bulks which present the specificity to have a diamagnetic behavior under zerofield cooling. The electromagnetic torque is obtained by the int...
متن کاملDEVELOPMENT OF BEAM CURRENT MONITOR WITH HIGH-Tc SQUID AT RIBF
A highly sensitive beam current monitor with a highcritical-temperature (high-Tc) superconducting quantum interference device (SQUID) and a high-Tc current sensor, that is, a high-Tc SQUID monitor, has been developed for use in the radioisotope beam factory (RIBF) at RIKEN. As reported in the present work, the high-Tc SQUID monitor allows us to measure the DC of high-energy heavy-ion beams nond...
متن کامل