Design of HD2: a 15 tesla Nb/sub 3/Sn dipole with a 35 mm bore
Design of HD2: a 15 tesla Nb/sub 3/Sn dipole with a 35 mm bore
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DOI：
10.1109/tasc.2005.849510
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发表时间：
2005-06
影响因子：
1.8
通讯作者：
G. Sabbi;S. Bartlett;S. Caspi;D. Dietderich;P. Ferracin;S. Gourlay;A. Hafalia;C. R. Hannaford;A. Lietzke;S. Mattafirri;A. Mcinturff;R. Scanlan
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文献类型：
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作者：
G. Sabbi;S. Bartlett;S. Caspi;D. Dietderich;P. Ferracin;S. Gourlay;A. Hafalia;C. R. Hannaford;A. Lietzke;S. Mattafirri;A. Mcinturff;R. Scanlan
最近在LBNL制造和测试的Nb/SUB3/Sn偶极子HD1将加速器磁体技术的极限推向了16T场范围，并为新一代HEP对撞机开辟了道路。HD1基于扁平的赛道线圈配置，内径为10毫米。这些特点与HD1的目标是一致的：探索Nb/Sub3/Sn导体在最大磁场和高应力下的性能极限。然而，为了进一步发展未来高场加速器的块状线圈几何结构，口径必须增加到30-50 mm。关于HD1，主要的研发挑战是：(A)线圈末端的设计，以便在不阻碍光束路径的情况下实现磁性有效的横截面；(B)孔的设计，以支持线圈免受预载荷力的影响；(C)几何磁场误差的校正。HD2代表了解决这些问题的第一步，中心偶极子磁场高于15T，内径35毫米，标称场谐波值在一个单位的分数内。本文描述了HD2磁体的设计概念及其主要特点，以及为未来高场、加速器质量的偶极子开发具有成本效益的块线圈设计所需的进一步步骤。
The Nb/sub 3/Sn dipole HD1, recently fabricated and tested at LBNL, pushes the limits of accelerator magnet technology into the 16 T field range, and opens the way to a new generation of HEP colliders. HD1 is based on a flat racetrack coil configuration and has a 10 mm bore. These features are consistent with the HD1 goals: exploring the Nb/sub 3/Sn conductor performance limits at the maximum fields and under high stress. However, in order to further develop the block-coil geometry for future high-field accelerators, the bore size has to be increased to 30-50 mm. With respect to HD1, the main R&D challenges are: (a) design of the coil ends, to allow a magnetically efficient cross-section without obstructing the beam path; (b) design of the bore, to support the coil against the pre-load force; (c) correction of the geometric field errors. HD2 represents a first step in addressing these issues, with a central dipole field above 15 T, a 35 mm bore, and nominal field harmonics within a fraction of one unit. This paper describes the HD2 magnet design concept and its main features, as well as further steps required to develop a cost-effective block-coil design for future high-field, accelerator-quality dipoles.