Design of HD2: a 15 T Nb3Sn dipole with a 35 mm bore

Journal Article · Wed Jun 01 04:00:00 EDT 2005 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2005.849510· OSTI ID:949206

Sabbi, G; Bartlett, S E; Caspi, S; Dietderich, D R; Ferracin, P; Gourlay, S A; Hannaford, C R; Hafalia, A R; Lietzke, A F; Mattafirri, S; McInturff, A D; Scanlan, R

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.

• Research Organization: Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, CA (US)
• Sponsoring Organization: Accelerator& Fusion Research Division
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 949206
• Report Number(s): LBNL-1579E
• Journal Information: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 2 Vol. 15
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACCELERATORS
CONFIGURATION
DESIGN
DIPOLES
GEOMETRY
HARMONICS
MAGNETS
PERFORMANCE