Recent technical trends of superconducting magnets in Japan. I. Magnet data base and recent progress in magnet winding current density

摘要

The Committee on Applied Superconducting Apparatuses and Characteristics of Superconductors, the Institute of Electrical Engineers of Japan (IEEJ) has made a database on low temperature superconducting magnets which have been built over the last ten years in Japan. Based on the data, trends of magnet technology are investigated. In this paper, an outline of the database is explained and, based on it, recent trends of magnet technology are investigated, focusing on sizes and configurations of magnets, current density of magnet windings and conductor configurations.