Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS

Xie, D. Z.; Benitez, J. Y.; Hodgkinson, A.; Loew, T.; Lyneis, C. M.; Phair, L.; Pipersky, P.; Reynolds, B.; Todd, D. S.

doi:10.1109/TASC.2015.2511928

Title: Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS

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Abstract

A novel Mixed Axial and Radial field System (MARS) seeks to enhance the B fields inside the plasma chamber within the limits of a given conductor, thereby making it possible to raise the operating fields for Electron Cyclotron Resonance Ion Sources (ECRISs). The MARS concept consists of a hexagonally shaped closed-loop coil and a set of auxiliary solenoids. The application of MARS will be combined with a hexagonal plasma chamber to maximize the use of the radial fields at the chamber inner surfaces. Calculations using Opera's TOSCA-3D solver have shown that MARS can potentially generate up to 50% higher fields and use of only about one half of the same superconducting wire, as compared with existing magnet designs in ECRISs. A MARS magnet system built with Nb 3 Sn coils could generate a high strength minimum-B field of maxima of ≥ 10 T on axis and ~6 T radially in an ECRIS plasma chamber. Following successful development, the MARS magnet system will be the best magnet scheme for the next generation of ECRISs. This paper will present the MARS concept, magnet design, prototyping a copper closed-loop coil, and discussions.

Authors:

Xie, D. Z. ^[1]; Benitez, J. Y. ^[1]; Hodgkinson, A. ^[1]; Loew, T. ^[1]; Lyneis, C. M. ^[1]; Phair, L. ^[1]; Pipersky, P. ^[1]; Reynolds, B. ^[1]; Todd, D. S. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Publication Date:: Wed Jun 01 00:00:00 EDT 2016

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1379361

Grant/Contract Number:: AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: 26; Journal Issue: 4; Journal ID: ISSN 1051-8223

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Superconducting magnets; Mars; Magnetic resonance; Magnetic separation; Solenoids; Magnetic confinement

Citation Formats


                    Xie, D. Z., Benitez, J. Y., Hodgkinson, A., Loew, T., Lyneis, C. M., Phair, L., Pipersky, P., Reynolds, B., and Todd, D. S. Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS.  United States: N. p., 2016. 
Web.  doi:10.1109/TASC.2015.2511928.

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                    Xie, D. Z., Benitez, J. Y., Hodgkinson, A., Loew, T., Lyneis, C. M., Phair, L., Pipersky, P., Reynolds, B., & Todd, D. S. Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS.  United States.  https://doi.org/10.1109/TASC.2015.2511928

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                    Xie, D. Z., Benitez, J. Y., Hodgkinson, A., Loew, T., Lyneis, C. M., Phair, L., Pipersky, P., Reynolds, B., and Todd, D. S. Wed .  
"Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS".  United States.  https://doi.org/10.1109/TASC.2015.2511928.  https://www.osti.gov/servlets/purl/1379361.

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@article{osti_1379361,

  title        = {Design of a New Superconducting Magnet System for High Strength Minimum-B Fields for ECRIS},

  author       = {Xie, D. Z. and Benitez, J. Y. and Hodgkinson, A. and Loew, T. and Lyneis, C. M. and Phair, L. and Pipersky, P. and Reynolds, B. and Todd, D. S.},

  abstractNote = {A novel Mixed Axial and Radial field System (MARS) seeks to enhance the B fields inside the plasma chamber within the limits of a given conductor, thereby making it possible to raise the operating fields for Electron Cyclotron Resonance Ion Sources (ECRISs). The MARS concept consists of a hexagonally shaped closed-loop coil and a set of auxiliary solenoids. The application of MARS will be combined with a hexagonal plasma chamber to maximize the use of the radial fields at the chamber inner surfaces. Calculations using Opera's TOSCA-3D solver have shown that MARS can potentially generate up to 50% higher fields and use of only about one half of the same superconducting wire, as compared with existing magnet designs in ECRISs. A MARS magnet system built with Nb 3 Sn coils could generate a high strength minimum-B field of maxima of ≥ 10 T on axis and ~6 T radially in an ECRIS plasma chamber. Following successful development, the MARS magnet system will be the best magnet scheme for the next generation of ECRISs. This paper will present the MARS concept, magnet design, prototyping a copper closed-loop coil, and discussions.},

  doi          = {10.1109/TASC.2015.2511928},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 4,

  volume       = 26,

  place        = {United States},

  year         = {Wed Jun 01 00:00:00 EDT 2016},

  month        = {Wed Jun 01 00:00:00 EDT 2016}

}

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