Design and Fabrication Experience With $\hbox{Nb}_{3} \hbox{Sn}$ Block-Type Coils for High Field Accelerator Dipoles
Design and Fabrication Experience With $\hbox{Nb}_{3} \hbox{Sn}$ Block-Type Coils for High Field Accelerator Dipoles
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DOI：
10.1109/tasc.2013.2246811
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发表时间：
2013-02
影响因子：
1.8
通讯作者：
D. Cheng;S. Caspi;D. Dietderich;H. Felice;P. Ferracin;A. Hafalia;M. Marchevsky;S. Prestemon;G. Sabbi
中科院分区：
文献类型：
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作者：
D. Cheng;S. Caspi;D. Dietderich;H. Felice;P. Ferracin;A. Hafalia;M. Marchevsky;S. Prestemon;G. Sabbi
在过去的几年里，劳伦斯伯克利国家实验室一直致力于开发Nb3Sn块型加速器质量偶极子，其工作孔径范围为13-15 t。磁铁设计的特点是两个线圈模块绕在43毫米孔径的钛合金极上。最新型号HD3集成了几个新功能，克服了以前测试中观察到的局限性。其中的关键目标是改善导体在直线段和端区之间的关键过渡位置，以及更稳健的制造工艺。迄今为止，已经制造了几个线圈，我们描述了它们在这些设计和工艺变化方面的性能。此外，我们还介绍了我们在设计和制造新一代磁铁线圈方面的经验，该线圈采用两件式磁极设计，允许电缆在反应过程中生长。这些经验的目的是形成规模扩大到更长的长度和更大的孔径磁铁的基础。
For the last several years, the Lawrence Berkeley National Laboratory has been engaged in the development of Nb3Sn block-type accelerator quality dipoles with operational bore fields in the range of 13-15 T. The magnet design features two coil modules wound around a titanium-alloy pole with a clear aperture of 43 mm. The latest model, HD3, incorporates several new features to overcome the limitations observed in previous tests. Among the key objectives are improved conductor positioning at critical transitions between straight section and end regions, and a more robust fabrication process. To date, several coils have been fabricated and we describe their performance with respect to these design and process changes. Additionally, we present our experience in design and fabrication of a new generation of magnet coils that introduce a two-piece pole design that allows for cable growth during reaction. These experiences are intended to form the basis for scale-up to longer lengths and larger aperture magnets.