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Flux-pumped ultra-high current magnets

磁通泵超高电流磁铁

基本信息

批准号：
EP/R016615/1
负责人：
Timothy Coombs
金额：
$ 61.16万
依托单位：
University of Cambridge
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=EP%2FR016615%2F1
关键词：
Flux pumped ultra current magnets

项目摘要

The project is primarily carried out at Cambridge University by the research team led by Dr Coombs. The research is constituted to address fundamental underpinning research into the development of ultra-high field magnets that will help to advance research into novel materials and to further understand existing ones. Superconducting technology can be used for improving the efficiency and performance of advanced research into exotic states of matter. Although persistent magnetic fields as high as 45 T have been produced using hybrid copper and superconducting magnets they are bulky and expensive to run. Achieving fields greater than 45T can be achieved as transients but the only way to produce such high fields in persistent mode is with HTS. This project will facilitate the provision of the high currents which are required to achieve high fields.Flux pumped ultra-high current magnets have the potential to produce fields which surpass the nearly 20 year old record of 45 T in a DC field Bitter magnet in a relatively cost effective manner. These higher fields will undoubtedly require superconducting cables capable of carrying thousands of amps and the means to deliver those very high currents. Current leads could be used but at currents in the 10s of thousands of amps they represent a very high cost and heating overhead. Higher currents mean lower conductor cost, lower magnet inductances shorter charging times and lower quench voltages. Flux pump technology and the latest dynamic bridge switching method will be key to providing these high currents with minimal heat loads and minimal infrastructure in comparison to expensive high-current power supplies and warm-to-cold current leads. The resultant effect is that the purchase and running costs of high-field magnets will decrease substantially. Crucially also infra-structure costs will be slashed.

该项目主要由库姆斯博士领导的研究小组在剑桥大学进行。这项研究是为了解决超高场磁体开发的基础研究，这将有助于推进对新材料的研究，并进一步了解现有材料。超导技术可用于提高对物质奇异状态的高级研究的效率和性能。尽管已经用铜和超导混合磁体产生了高达45T的持久磁场，但它们体积大，运行成本高。获得大于45T的场可以作为瞬变来实现，但在持久模式下产生如此高的场的唯一方法是使用HTS。该项目将有助于提供实现高场所需的高电流。磁通泵式超大电流磁体具有以相对经济高效的方式产生的磁场超过直流磁场中45T的近20年记录的潜力。这些更高的磁场无疑将需要能够承载数千安培的超导电缆，以及输送这些非常高电流的手段。可以使用电流引线，但在几千安培的电流中，它们代表着非常高的成本和加热开销。更高的电流意味着更低的导体成本、更低的磁感、更短的充电时间和更低的失超电压。与昂贵的大电流电源和冷温电流引线相比，通量泵技术和最新的动态桥式开关方法将是以最小的热负荷和最小的基础设施提供这些大电流的关键。其结果是，购买和运行高场磁铁的成本将大幅下降。同样重要的是，基础设施成本将大幅削减。