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Title: Design of a superconducting 28 GHz ion source magnet for FRIB using a shell-based support structure

Abstract

The Superconducting Magnet Program at the Lawrence Berkeley National Laboratory (LBNL) is completing the design of a 28 GHz NbTi ion source magnet for the Facility for Rare Isotope Beams (FRIB). The design parameters are based on the parameters of the ECR ion source VENUS in operation at LBNL since 2002 featuring a sextupole-in-solenoids configuration. Whereas most of the magnet components (such as conductor, magnetic design, protection scheme) remain very similar to the VENUS magnet components, the support structure of the FRIB ion source uses a different concept. A shell-based support structure using bladders and keys is implemented in the design allowing fine tuning of the sextupole preload and reversibility of the magnet assembly process. As part of the design work, conductor insulation scheme, coil fabrication processes and assembly procedures are also explored to optimize performance. We present the main features of the design emphasizing the integrated design approach used at LBNL to achieve this result.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2];  [2]
  1. Lawrence Berkeley National Lab., CA (United States)
  2. Michigan State Univ., East Lansing, MI (United States). Facility for Rare Isotope Beams.
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1214573
Grant/Contract Number:  
AC02-05CH11231; SC0000661
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 25; Journal Issue: 3; Journal ID: ISSN 1051-8223
Publisher:
Institute of Electrical and Electronics Engineers (IEEE)
Country of Publication:
United States
Language:
English
Subject:
ECR ion source magnet; NbTi; shell-based support structure

Citation Formats

Felice, H., Rochepault, E., Hafalia, R., Caspi, S., Dietderich, D. R., Prestemon, S. O., Machicoane, G., Pozdeyev, E., Bultman, N., and Rao, X. Design of a superconducting 28 GHz ion source magnet for FRIB using a shell-based support structure. United States: N. p., 2014. Web. doi:10.1109/TASC.2014.2377730.
Felice, H., Rochepault, E., Hafalia, R., Caspi, S., Dietderich, D. R., Prestemon, S. O., Machicoane, G., Pozdeyev, E., Bultman, N., & Rao, X. Design of a superconducting 28 GHz ion source magnet for FRIB using a shell-based support structure. United States. doi:10.1109/TASC.2014.2377730.
Felice, H., Rochepault, E., Hafalia, R., Caspi, S., Dietderich, D. R., Prestemon, S. O., Machicoane, G., Pozdeyev, E., Bultman, N., and Rao, X. Fri . "Design of a superconducting 28 GHz ion source magnet for FRIB using a shell-based support structure". United States. doi:10.1109/TASC.2014.2377730. https://www.osti.gov/servlets/purl/1214573.
@article{osti_1214573,
title = {Design of a superconducting 28 GHz ion source magnet for FRIB using a shell-based support structure},
author = {Felice, H. and Rochepault, E. and Hafalia, R. and Caspi, S. and Dietderich, D. R. and Prestemon, S. O. and Machicoane, G. and Pozdeyev, E. and Bultman, N. and Rao, X.},
abstractNote = {The Superconducting Magnet Program at the Lawrence Berkeley National Laboratory (LBNL) is completing the design of a 28 GHz NbTi ion source magnet for the Facility for Rare Isotope Beams (FRIB). The design parameters are based on the parameters of the ECR ion source VENUS in operation at LBNL since 2002 featuring a sextupole-in-solenoids configuration. Whereas most of the magnet components (such as conductor, magnetic design, protection scheme) remain very similar to the VENUS magnet components, the support structure of the FRIB ion source uses a different concept. A shell-based support structure using bladders and keys is implemented in the design allowing fine tuning of the sextupole preload and reversibility of the magnet assembly process. As part of the design work, conductor insulation scheme, coil fabrication processes and assembly procedures are also explored to optimize performance. We present the main features of the design emphasizing the integrated design approach used at LBNL to achieve this result.},
doi = {10.1109/TASC.2014.2377730},
journal = {IEEE Transactions on Applied Superconductivity},
number = 3,
volume = 25,
place = {United States},
year = {2014},
month = {12}
}

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