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Title: Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB

Abstract

The superconducting electron cyclotron resonance (ECR) source magnet for the facility for rare isotope beams at Michigan State University was designed and built by the Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL) in 2017. The 28 GHz NbTi ion source magnet features a sextupole-in-solenoids configuration which is comparable to the VENUS ECR magnet operated at LBNL. However, the mechanical design of this magnet utilizes a shell-based support structure which allows fine adjustments to the sextupole preload and reversibility of the magnet assembly process. The magnet has been assembled and tested to operational currents at LBNL. This paper describes the mechanical analyses performed to estimate the sextupole's and solenoids' preloads. We will report on the 3-D finite element analysis during room temperature assembly, cool-down, and magnet excitation, and then describe the magnet preload operations. Finally, we will describe the performance of the support structure during the quench training.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo; ; ; ; ; ; ORCiD logo; ; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1564054
DOE Contract Number:  
AC02-05CH11231
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1051-8223
Country of Publication:
United States
Language:
English

Citation Formats

Pan, Heng, Arbelaez, Diego, Felice, Helene, Hafalia, Aurelio. R., Lipton, Thomas, Myers, Scott, Machicoane, Guillaume, Omelayenko, Mykola, Prestemon, Soren, Pozdeyev, Eduard, Rochepault, Etienne, and Rao, Xing. Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB. United States: N. p., 2019. Web. doi:10.1109/tasc.2019.2901589.
Pan, Heng, Arbelaez, Diego, Felice, Helene, Hafalia, Aurelio. R., Lipton, Thomas, Myers, Scott, Machicoane, Guillaume, Omelayenko, Mykola, Prestemon, Soren, Pozdeyev, Eduard, Rochepault, Etienne, & Rao, Xing. Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB. United States. doi:10.1109/tasc.2019.2901589.
Pan, Heng, Arbelaez, Diego, Felice, Helene, Hafalia, Aurelio. R., Lipton, Thomas, Myers, Scott, Machicoane, Guillaume, Omelayenko, Mykola, Prestemon, Soren, Pozdeyev, Eduard, Rochepault, Etienne, and Rao, Xing. Thu . "Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB". United States. doi:10.1109/tasc.2019.2901589.
@article{osti_1564054,
title = {Mechanical Study of a Superconducting 28-GHz Ion Source Magnet for FRIB},
author = {Pan, Heng and Arbelaez, Diego and Felice, Helene and Hafalia, Aurelio. R. and Lipton, Thomas and Myers, Scott and Machicoane, Guillaume and Omelayenko, Mykola and Prestemon, Soren and Pozdeyev, Eduard and Rochepault, Etienne and Rao, Xing},
abstractNote = {The superconducting electron cyclotron resonance (ECR) source magnet for the facility for rare isotope beams at Michigan State University was designed and built by the Superconducting Magnet Group at Lawrence Berkeley National Laboratory (LBNL) in 2017. The 28 GHz NbTi ion source magnet features a sextupole-in-solenoids configuration which is comparable to the VENUS ECR magnet operated at LBNL. However, the mechanical design of this magnet utilizes a shell-based support structure which allows fine adjustments to the sextupole preload and reversibility of the magnet assembly process. The magnet has been assembled and tested to operational currents at LBNL. This paper describes the mechanical analyses performed to estimate the sextupole's and solenoids' preloads. We will report on the 3-D finite element analysis during room temperature assembly, cool-down, and magnet excitation, and then describe the magnet preload operations. Finally, we will describe the performance of the support structure during the quench training.},
doi = {10.1109/tasc.2019.2901589},
journal = {IEEE Transactions on Applied Superconductivity},
issn = {1051-8223},
number = 5,
volume = 29,
place = {United States},
year = {2019},
month = {8}
}