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MT29 Abstracts and Technical Program

1–6 Jul 2025
Omni Boston Hotel at the Seaport
US/Eastern timezone

Conference Management

Wed-Mo-Po.01-02: Design of a superconducting sector dipole magnet for the High Rigidity Spectrometer at Facility for Rare Isotope Beams

2 Jul 2025, 09:15
2h
Ensemble Ballroom, Level 2

Ensemble Ballroom, Level 2

Speaker

Junseong Kim (MIT)

Description

The High Rigidity Spectrometer (HRS) at the Facility for Rare Isotope Beams at Michigan State University is designed to study exotic neutron-rich isotopes at high beam energies. With a maximum magnetic rigidity of 8 Tm, the HRS is optimized for the rigidities at which rare-isotope beams are produced at FRIB. It consists of two main sections: the High-Transmission Beamline and the Spectrometer Section (SPS). A key magnet component of the SPS is the DS2 superconducting dipole magnet, which provides a 60° beam bending capability. This magnet, currently under design, features NbTi conductor embedded in a copper channel to support a passive quench diode protection scheme and generates 2 T dipole peak field to achieve the 8 Tm rigidity. The magnet includes a warm iron yoke with dimension is 5.9 m x 4.2 m x 2.2 m and a pole gap of 0.2 m. To achieve horizontal focusing without additional quadrupole magnets, a 20° pole-face angle is applied to both sides of the magnet poles. This paper presents a detailed design of the DS2 magnet, covering its magnetic properties, coil forces, conductor stability, quench analysis, and mechanical structure.

Author

Junseong Kim (MIT)

Co-authors

Bryan Tousignant (Facility for Rare Isotope Beams, Michigan State University) Courtney Smith (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Danlu Zhang Hai Nguyen (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Hengkang Zheng (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Jeff Hulbert (Facility for Rare Isotope Beams, Michigan State University) Jie Wei (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) John Wenstrom (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Samuel Miller (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Shumpei Noji (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Ting Xu (Facility for Rare Isotope Beams) Xiaoji Du (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Yamen Al-Mahmoud (Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824, USA) Yoonhyuck Choi

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