Inspired by the successful operation of the 11 T Nb3Sn experimental dipole magnet MSUT, a new large bore 10 T@4.5 K Nb3 Sn model dipole magnet is under development in The Netherlands. For application in this system, Shape Metal Innovation (SMI) has developed a new "Powder in tube" type of Nb3Sn conductor with an increased number of filaments. At a strand diameter of 0.9 mm, the diameter of the filaments after reaction for only 33 hours at 675°C has been reduced to about 20 microns. The non-copper critical current density has been measured to be as high as 1890 A/mm 2 at 10 T@4.25 K.
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机译：受11 T Nb3Sn实验偶极磁体MSUT成功运行的启发，荷兰正在开发一种新型的大口径10 T@4.5 K Nb3 Sn模型偶极磁体。为了在该系统中应用，Shape Metal Innovation（SMI）开发了一种新型“管内粉末”型Nb3Sn导体，其中的细丝数量增加了。在0.9毫米的股线直径下，在675°C下反应仅33小时后的长丝直径已减小至约20微米。在10 T@4.25 K下测得的非铜临界电流密度高达1890 A / mm 2。
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