Ultra-High Field Magnets for X-Ray and Neutron Scattering using High Temperature Superconductors

Winn, Barry; Broholm, C.; Bird, M.D.; Breneman, Bruce C; Coffey, M. T.; Cutler, R.I.; Duckworth, R. C.; Erwin, R. W.; Hahn, Seungyong; Hernandez, Yamali; Herwig, Kenneth; Holland, L. D.; Lonergan, Kevin M.; Melhem, Ziad; Minter, Stephen J.; Nelson, C. S.; Paranthaman, M. Parans; Pierce, Jon L.; Ruff, Jacob P. C.; Shen, Tengming; Sherline, Todd E.; Smeibidl, P.; Tennant, D. A.; Laan, D C van der; Wahle, R.; Zhang, Y.

doi:10.2172/1432171

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…For particle colliders, the usefulness of achieving high magnetic fields is readily seen from the simple description of the proton beam energy of proton colliders E ∝ 0.3 × B × R, where B is the field in the dipole magnets (T), R is the bending radius in the dipole magnets (km) and the particle energy E in TeV. Coincidently, magnetic fields of >25 T generated by all superconducting magnets are also desired for condensed matter research [4], fusion energy [5], and NMR [6].…”

Section: Introductionmentioning

confidence: 99%

Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires

Shen

Fajardo

2020

Instruments

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Superconducting magnets are an invaluable tool for scientific discovery, energy research, and medical diagnosis. To date, virtually all superconducting magnets have been made from two Nb-based low-temperature superconductors (Nb-Ti with a superconducting transition temperature Tc of 9.2 K and Nb3Sn with a Tc of 18.3 K). The 8.33 T Nb-Ti accelerator dipole magnets of the large hadron collider (LHC) at CERN enabled the discovery of the Higgs Boson and the ongoing search for physics beyond the standard model of high energy physics. The 12 T class Nb3Sn magnets are key to the International Thermonuclear Experimental Reactor (ITER) Tokamak and to the high-luminosity upgrade of the LHC that aims to increase the luminosity by a factor of 5–10. In this paper, we discuss opportunities with a high-temperature superconducting material Bi-2212 with a Tc of 80–92 K for building more powerful magnets for high energy circular colliders. The development of a superconducting accelerator magnet could not succeed without a parallel development of a high performance conductor. We will review triumphs of developing Bi-2212 round wires into a magnet grade conductor and technologies that enable them. Then, we will discuss the challenges associated with constructing a high-field accelerator magnet using Bi-2212 wires, especially those dipoles of 15–20 T class with a significant value for future physics colliders, potential technology paths forward, and progress made so far with subscale magnet development based on racetrack coils and a canted-cosine-theta magnet design that uniquely addresses the mechanical weaknesses of Bi-2212 cables. Additionally, a roadmap being implemented by the US Magnet Development Program for demonstrating high-field Bi-2212 accelerator dipole technologies is presented.

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Section: Introductionmentioning

confidence: 99%

Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires

Shen

Fajardo

2020

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A flexible neutron spectrometer concept with a new ultra-high field steady-state vertical-bore magnet

Winn

Broholm

Bird

et al. 2022

Review of Scientific Instruments

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The proposed facility explores materials under ultra-high magnetic fields. By combining the power of high fields to tune materials and of neutron scattering to probe the resulting changes down to the atomic scale, this facility will enable transformative progress in the study of quantum materials and is named for the “TITAN” subset of Greek gods to reflect this transformation. TITAN will offer DC magnetic fields up to at least 20 T. Exploiting the record brightness and bandwidth of the Second Target Station at the Spallation Neutron Source, TITAN will probe atomic-scale responses through high efficiency neutron spectroscopy up to 80 meV energy transfer, high resolution diffraction, and small angle neutron scattering. Focusing neutron optics will maximize flux on accurately positioned samples, while radial collimation and optimized shielding and detection strategies will minimize backgrounds.

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A Tear-Drop Bifilar Sample Holder for Full Excitation and Stability Studies of HTS Cables at 4.2 K Using a Superconducting Transformer

Kovacs

Sumption

Barzi

et al. 2019

IEEE Trans. Appl. Supercond.

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Ultra-High Field Magnets for X-Ray and Neutron Scattering using High Temperature Superconductors

Cited by 3 publications

References 32 publications

Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires

Superconducting Accelerator Magnets Based on High-Temperature Superconducting Bi-2212 Round Wires

A flexible neutron spectrometer concept with a new ultra-high field steady-state vertical-bore magnet

A Tear-Drop Bifilar Sample Holder for Full Excitation and Stability Studies of HTS Cables at 4.2 K Using a Superconducting Transformer

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