Tooling Design, Coil Fabrication, and Prototype Coil Performance Verification for a 28 GHz Nb<sub>3</sub>Sn ECR Ion Source Magnet
Worldwide several superconducting electron cyclotron resonance (ECR) ion sources have been developed and in operation for heavy ion accelerators using Nb-Ti magnets. To explore the use of high-field Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn to break the field limit of Nb-Ti for ECR magnets, state-of-the-art Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn coil fabrication techniques and tooling design must be used to address the challenging characteristics of Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn conductors. Earlier we reported the overall magnet design, conductor selection, and conductor characterization for building a 28 GHz superconducting ECR ion source using Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn sextupole coils for Facility for Rare Isotope Beams (FRIB). This paper describes the progress towards fabricating prototype Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn sextupole coil. In particular, we present tooling design, Nb<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$_{3}$</tex-math></inline-formula>Sn sextupole coil fabrication, and a mirror magnet for performance verification.
Authors
- Tengming Shen (ORCID: https://orcid.org/0000-0003-1581-320X)
- J. Wei (ORCID: https://orcid.org/0000-0001-5256-8851)
- T. Maruta (ORCID: https://orcid.org/0000-0001-6171-4339)
- Ye Yang (ORCID: https://orcid.org/0000-0001-6845-9297)
- R. Hafalia (ORCID: https://orcid.org/0009-0002-4390-9559)
- Junseong Kim (ORCID: https://orcid.org/0000-0002-2077-448X)
- Ting Xu (ORCID: https://orcid.org/0000-0002-5548-2890)
- David Greene (ORCID: https://orcid.org/0000-0003-2953-8448)
- S. Prestemon (ORCID: https://orcid.org/0000-0002-1937-4040)
- M. Juchno (ORCID: https://orcid.org/0000-0002-6978-8567)
- Jose Ferradás Troitiño (ORCID: https://orcid.org/0000-0001-7874-9722)
- P. Ferracin (ORCID: https://orcid.org/0000-0003-0415-8895)
- Junwei Guo (ORCID: https://orcid.org/0000-0002-4724-9810)
- Philip Mallon (ORCID: https://orcid.org/0000-0003-3738-6720)
- Guillaume Machicoane
- Danlu Zhang (ORCID: https://orcid.org/0000-0003-3332-8849)
- Xiaoji Du (ORCID: https://orcid.org/0000-0003-1492-3132)
- Yoon Hyuck Choi (ORCID: https://orcid.org/0000-0002-9999-242X)
- Liuwei Xu (ORCID: https://orcid.org/0009-0006-4553-0023)
Institutions
- Lawrence Berkeley National Laboratory (US)
- European Organization for Nuclear Research (CH)
- Michigan State University (US)
Publication Details
- Journal
- IEEE Transactions on Applied Superconductivity
- Published
- 2025-03-07
- DOI
- https://doi.org/10.1109/tasc.2025.3548023
- Primary Topic
- Particle accelerators and beam dynamics
- Type
- article
- Field-Weighted Citation Impact
- 0.00