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Title: An R&D Approach to the Development of Long Nb3Sn Accelerator Magnets Using the key and Bladder Technology

Abstract

Building accelerator quality magnets using Nb{sub 3}Sn for next generation facilities is the challenge of the next decade. The Superconducting Magnet Group at LBNL has developed an innovative support structure for high field magnets. The structure is based on an aluminum shell over iron yokes using hydraulic bladders and locking keys for applying the pre-stress. At cool down the pre-stress is almost doubled due to the differences of thermal contraction. This new structure allows precise control of the pre-stress with minimal spring back and conductor over-stress. At present the support structure has been used with prototype magnets up to one meter in length. In this paper, the design of a 4-meter long, 11 Tesla, wind-and-react racetrack dipole will be presented as a possible step toward the fabrication of long Nb{sub 3}Sn accelerator magnets.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
Accelerator& Fusion Research Division
OSTI Identifier:
973944
Report Number(s):
LBNL-2663E
TRN: US1002238
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; ALUMINIUM; BLADDER; CONTRACTION; DESIGN; DIPOLES; FABRICATION; HYDRAULICS; IRON; MAGNETS; METERS; SUPERCONDUCTING MAGNETS

Citation Formats

Bartlett, S E, Caspi, S, Dietderich, D R, Ferracin, P, Gourlay, S A, Hannaford, C R, Hafalia, A R, Lietzke, A F, McInturff, A D, Mattafirri, S, Sabbi, G, and Scanlan, R M. An R&D Approach to the Development of Long Nb3Sn Accelerator Magnets Using the key and Bladder Technology. United States: N. p., 2004. Web.
Bartlett, S E, Caspi, S, Dietderich, D R, Ferracin, P, Gourlay, S A, Hannaford, C R, Hafalia, A R, Lietzke, A F, McInturff, A D, Mattafirri, S, Sabbi, G, & Scanlan, R M. An R&D Approach to the Development of Long Nb3Sn Accelerator Magnets Using the key and Bladder Technology. United States.
Bartlett, S E, Caspi, S, Dietderich, D R, Ferracin, P, Gourlay, S A, Hannaford, C R, Hafalia, A R, Lietzke, A F, McInturff, A D, Mattafirri, S, Sabbi, G, and Scanlan, R M. 2004. "An R&D Approach to the Development of Long Nb3Sn Accelerator Magnets Using the key and Bladder Technology". United States. https://www.osti.gov/servlets/purl/973944.
@article{osti_973944,
title = {An R&D Approach to the Development of Long Nb3Sn Accelerator Magnets Using the key and Bladder Technology},
author = {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 McInturff, A D and Mattafirri, S and Sabbi, G and Scanlan, R M},
abstractNote = {Building accelerator quality magnets using Nb{sub 3}Sn for next generation facilities is the challenge of the next decade. The Superconducting Magnet Group at LBNL has developed an innovative support structure for high field magnets. The structure is based on an aluminum shell over iron yokes using hydraulic bladders and locking keys for applying the pre-stress. At cool down the pre-stress is almost doubled due to the differences of thermal contraction. This new structure allows precise control of the pre-stress with minimal spring back and conductor over-stress. At present the support structure has been used with prototype magnets up to one meter in length. In this paper, the design of a 4-meter long, 11 Tesla, wind-and-react racetrack dipole will be presented as a possible step toward the fabrication of long Nb{sub 3}Sn accelerator magnets.},
doi = {},
url = {https://www.osti.gov/biblio/973944}, journal = {IEEE Transactions on Applied Superconductivity},
number = 2,
volume = 15,
place = {United States},
year = {2004},
month = {8}
}