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

Abstract

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,more » accelerator-quality dipoles.« less

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Accelerator& Fusion Research Division
OSTI Identifier:
949206
Report Number(s):
LBNL-1579E
TRN: US0901782
DOE Contract Number:  
DE-AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 15; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
75; 43; ACCELERATORS; CONFIGURATION; DESIGN; DIPOLES; GEOMETRY; HARMONICS; MAGNETS; PERFORMANCE

Citation Formats

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, and Scanlan, R. Design of HD2: a 15 T Nb3Sn dipole with a 35 mm bore. United States: N. p., 2005. Web. doi:10.1109/TASC.2005.849510.
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. Design of HD2: a 15 T Nb3Sn dipole with a 35 mm bore. United States. https://doi.org/10.1109/TASC.2005.849510
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, and Scanlan, R. 2005. "Design of HD2: a 15 T Nb3Sn dipole with a 35 mm bore". United States. https://doi.org/10.1109/TASC.2005.849510. https://www.osti.gov/servlets/purl/949206.
@article{osti_949206,
title = {Design of HD2: a 15 T Nb3Sn dipole with a 35 mm bore},
author = {Sabbi, G and Bartlett, S E and Caspi, S and Dietderich, D R and Ferracin, P and Gourlay, S A and Hannaford, C R and Hafalia, A R and Lietzke, A F and Mattafirri, S and McInturff, A D and Scanlan, R},
abstractNote = {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.},
doi = {10.1109/TASC.2005.849510},
url = {https://www.osti.gov/biblio/949206}, journal = {IEEE Transactions on Applied Superconductivity},
number = 2,
volume = 15,
place = {United States},
year = {2005},
month = {6}
}