Conveners
Wed-Mo-Po3.07 - Magnetization and AC Losses I
- Hiroshi Ueda (Okayama University)
- Pasquale Fabbricatore (INFN Genova)
A unique activation technique for permanent Nd-Fe-B magnets which were embedded in the rotors of interior permanent magnet (IPM) motors has been developed as a magnetizing tool using high temperature superconducting (HTS) bulk magnets. The experimental and numerical simulation studies were conducted to evaluate the magnetic field-trapping performances in two manners of we call “scanning” and...
Magnetization of RE-123 coated conductor influences the spatial homogeneity and time variation of the magnetic field of a magnet. This has been an important issue for the realization of MRI, NMR and accelerator comprising the coated conductor. Therefore, the measurement and modelling of the magnetization of the coated conductor is crucial for the quantitative estimation of its influence on a...
We study to increase a trapped magnetic field of HTS bulk magnet activated by pulsed field magnetization (PFM). Although various methods to enhance the trapped field are considered, they can be broadly divided into two approaches; one is improvement of magnetizing method and another is modification of exciting equipment. In the latter, a pulse width was expanded by changing an inductance of...
We have studied both theoretically and experimentally the process of magnetization of HTSC square (12mm x12mm) tape as well as stack from tapes by means of small source of magnetic field. The size of magnetic field localization was less than the size of sample. Local magnetic field induced the currents which were calculated in the frame of critical state model taking into account the...
The field and field quality was modeled for a DC planar undulator designed to be wound with YBCO coated conductor. The undulator field on axis target was 1.3 T with a period length of 17 mm. The winding former and pole material were 1006 LCS, and the gap was 9.5 mm. A tape wound design was used, with 50 tape layers in a groove. The tape was taken to be 4 mm wide and 0.08 mm thick, with 10 m...
