Conveners
Wed-Af-Po3.22 - Associated Technology I
- Maria Baldini (FNAL)
- Sasha Ishmael (Lupine Materials and Technology)
High-Q operation of Superconducting Radio Frequency cavity reduces power loss at surface and is desirable for CW operation.
For high-Q operation, it is needed to reduce the surface resistance, which is a summation of the BCS resistance and residual resistance. It was found that the residual resistance comes mostly from magnetic flux trapping during cool down process.
A magnetometer called...
Laminated silicon steel sheet, which is widely applied in electrical engineering, such as cores of power transformer and electrical machines, usually suffer from stress caused by a quantity of factors such as non-uniform clamping forces, wavy laminations, or temperature gradients. Therefore, the measurement of magnetic properties under stress is important. A remarkable number of works...
With an operating speed of over 500 km/h and large levitation gap of over 100 mm, electrodynamic suspension (EDS) trains have drawn extensive attention in the railway industry due to these innate merits. The operating performance of the EDS train is strongly affected by the self-excited vibration caused by the varying magnetic field and track irregularity. Being the emphasis of this paper,...
Long wire critical current (I_c) characterization is important for fabrication of superconducting magnets. Many inductive and transport I_c measurement methods have been developed for km scale rare earth cuprate (REBCO) based Coated Conductors (CC), which is the most promising high temperature superconducting (HTS) material for magnet applications. As a direct indication of the current...
A Bitter-like high temperature superconducting (HTS) magnet stacked by RE (RE=rare earth )Ba-Cu-O annular plates and magnetized by flux pump is attractive in application of magnet operating in persistent mode (PCM). Its self- and mutual inductances is essential for calculation of stored energy which has significant something to do with its stability such as quench and recovery as well as...
HTS switch is a critical component for many HTS applications such as flux pumps, fault current limiters. The dynamic response of the HTS switch is a critical to the the performance of the flux pump and fault current limiters. In this study, we build a thermal coupled numerical model for a HTS switch. We use this model to analyse the performance of a HTS switch under different perpendicular...
Two physics experiments using Muon are proceeded in J-PARC, named MuSEUM and g-2/EDM experiments. Objectives of these experiments are to measure hyperfine transitions in the ground state hyperfine structure interval of Muonium and to measure the anomalous magnetic moment of the positive muon, respectively. High homogeneity of magnetic field is essential to achieve the physics goals of both...
