时间：2018年4月24日10：40
地点：旗山校区理工楼3-102
主讲：英国巴斯大学 王亚伟博士后
主办：物理与能源学院、福建省量子调控与新能源材料重点实验室、福建省太阳能转换与储能工程技术研究中心
专家简介：王亚伟，英国巴斯大学做博士后研究。2016年9月获上海交通大学博士学位，曾在美国密西根州立大学和北卡罗莱纳州立大学做访问研究。主要学术业绩为：（1）系统研究了无绝缘高温超导线圈的充放电特性和失超特性，首次从理论上解释了其自我保护特性的内在机理。该研究成果发表超导领域一流杂志SuST，入选SuST杂志年度下载量最多文章（most read）,入选年度科研亮点（Highlight 2016）。（2）在密西根州立大学加速器国家实验室参与了世界首台二代高温超导加速器磁体的设计，首次对基于无绝缘线圈的强场加速器磁体的充电损耗进行了分析，首次提出了turn-to-turn loss的问题，进行了系统分析。目前，共发表SCI论文30余篇（第一/通讯作者13篇），授权专利7项，博士论文获上海交通大学优秀博士论文（14/1500）。
报告摘要：High field magnet is widely used in scientific researches. It play a key role in the study of the fundamental characteristics of particles, materials and cells. Higher fields are always preferred by scientific research, since new characteristics and theory of materials and cells may be discovered in higher fields. Larger powerful particle colliders also needs higher fields magnets. Most of existing high field magnets is built with low temperature superconductors (LTS), their maximum fields are limited at about 20 T which is the critical field of LTS. High temperature superconductor (HTS), especially the second-generation (2G) HTS, has a much higher critical field than LTS, which has a great potential in magnets beyond 25 T. However, the 2G HTS magnet technology has always suffered the problem of low thermal stability of HTS, which makes the conductor easy to be damaged during a quench. Therefore, the 2G HTS magnet technology shows a slow progress before 2010. Then, a novel coil technique is proposed in 2011, No-insulation HTS coil, which significantly improve the thermal stability of HTS coils, and enable the coil a self-protection features during quench. This technique develops rapidly and comes into industrial application in 2015. Within recent 3 years, more than 10 high field magnets beyond 25 T is started around the world. The high field magnet is a key technology for the scientific researches of a country, and also has a great commercial potential. The speaker began to study the magnet technology based on NI technique for more than 5 years and achieved an excellent performance on this field. The details of this technique will be presented by the speaker.