Magnetic and Mechanical Analysis of Bi-2212 Rutherford Cable in a Cos-Theta Sub-Scale Dipole Coil

Journal Article · Thu Feb 27 00:00:00 EST 2025 · Supercond.Sci.Technol.

DOI:https://doi.org/10.1088/1361-6668/adb340· OSTI ID:2563138

D'Agliano, A. ^[1]; Zlobin, A. V. ^[2]; Novitski, I. ^[2]; Turrioni, D. ^[2]; Barzi, E. ^[2]; Donati, S. ^[3]; Giusti, V. ^[3]

---

1. Fermilab; Pisa U.
2. Fermilab
3. Pisa U.

The U.S. Magnet Development Program (US-MDP) explores high-field accelerator magnets compatible with operational conditions beyond the limits of Nb$$_3$$Sn technology. The ongoing R&D High-Temperature Superconductors (HTS) suggests using Bi$$_2$$Sr$$_2$$CaCu$$_2$$O$$_{8-x}$$ (Bi-2212) as superconducting element. Bi-2212 Rutherford cables maintain a high critical current (I$$_C$$) when exposed to a large external magnetic field. However, Bi-2212 exhibits an oversensitive stress-strain response when subject to large Lorentz forces. This paper reports on the magnetic and mechanical analysis of the Bi-2212 cosine-theta insert being developed at Fermilab for a hybrid magnet composed of two external layers of Nb$$_3$$Sn and two internal layers of Bi-2212. We performed a FEM analysis of the insert to estimate the HTS stress state in the coil's strands under magnetic and mechanical loads.

• Research Organization: Pisa U.; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: US Department of Energy
• Grant/Contract Number: 89243024CSC000002
• OSTI ID: 2563138
• Report Number(s): FERMILAB-PUB-25-0035-TD-V; arXiv:2504.12028; oai:inspirehep.net:2896089
• Journal Information: Supercond.Sci.Technol., Journal Name: Supercond.Sci.Technol. Journal Issue: 3 Vol. 38
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS