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Author(s)
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Ferracin, P (LBNL, Berkeley) ; Caspi, S (LBNL, Berkeley) ; Cheng, D W (LBNL, Berkeley) ; Dietderich, D R (LBNL, Berkeley) ; Hafalia, A R (LBNL, Berkeley) ; Hannaford, C R (LBNL, Berkeley) ; Higley, H (LBNL, Berkeley) ; Lietzke, A F (LBNL, Berkeley) ; Lizarazo, J (LBNL, Berkeley) ; McInturff, A D (LBNL, Berkeley) ; Sabbi, G (LBNL, Berkeley) |
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Abstract
| The Superconducting Magnet Program at Lawrence
Berkeley National Laboratory (LBNL) is continuing the development of HD2, a 1 m long $\hbox{Nb}_{3}\hbox{Sn}$ dipole generating a dipole field
of 15 T in a 36 mm clear bore. With tilted (flared) ends to avoid
obstructing the beam path, HD2 represents a step towards the development of high field and cost effective accelerator quality magnets. The design has been optimized to minimize geometric harmonics and to address iron saturation and conductor magnetization effects. The support structure is based on an external aluminum shell, pre-tensioned with pressurized bladders and interference keys. Aluminum axial rods and stainless steel end plates
provide longitudinal support to the coil ends during magnet excitation. This paper reports on field quality optimization and magnet
parameters. The design and fabrication of the coil and structure
components, and results from coil winding, reaction, and potting
are also presented. |