MT29 Abstracts and Technical Program

Session

Fri-Mo-Or2 - Mechanical Behavior and Stress III

4 Jul 2025, 08:00

Momentum D

Conveners

Fri-Mo-Or2 - Mechanical Behavior and Stress III

• Gueorgui Velev (Fermilab)
• Ernesto Bosque (Magnetics Corporation)

30. Fri-Mo-Or2-01: Critical current and inter-tape contact resistances under cyclic transverse loading of ReBCO round cables for fusion in the Twente Press

Dr Arend Nijhuis (University of Twente)

04/07/2025, 08:00

Contributed Oral

High magnetic fields of up to 20 T in tokamak-type fusion devices require High-Temperature Superconductors (HTS) and 50 kA/20 T class, full-size ReBCO Cable In Conduit Conductors (CICC). Conductors based on Conductor On Round Core (CORC®/HFRC) cables, are among others, proposed for the Central Solenoids of the European DEMO and the Chinese BEST fusion reactors. The large Lorentz forces...

639. Fri-Mo-Or2-02: Screening current induced stress and strain analysis considering thickness variation along the width of REBCO tape

Yu Suetomi (National High Magnetic Field Laboratory)

04/07/2025, 08:15

Contributed Oral

Consideration of screening current induced stress (SCIS) is crucial for management of stress and strain in the design of ultra-high field REBCO magnets. We developed a numerical simulation tool that utilizes COMSOL and studied the effects of including reinforcement in REBCO coils such as co-winding or over-banding steel tapes [1]. The model employs the penalty method as a boundary condition...

336. Fri-Mo-Or2-03: A Numerical Comparison of the 3D Mechanics of REBCO CORC® Dipole Designs

Ye Yang

04/07/2025, 08:30

Contributed Oral

Conductor on Round Core (CORC®) cables, consisting of REBCO coated tapes helically wound around a metal former, are a promising conductor option for future high-field dipole magnets in particle accelerators. Crucial to the success of this application is the conductor resilience to mechanical loads. The promising electrical performance of the CORC® wires may be compromised by damage and...

598. Fri-Mo-Or2-04: Measurements of the electromechanical delamination strength of REBCO CCs under lorentz force: the numerical modeling

Gianluca Vernassa (CERN & Ecole des Mines de Saint-Etienne)

04/07/2025, 08:45

Contributed Oral

Rare-earth barium copper oxide (REBCO) coated conductors (CCs), the leading candidates for the construction of ultra-high field magnets, are produced in the form of thin tapes, with a laminar structure consisting of different layers of functional materials. The feeble adhesion strength between layers has been long remarked, and represents a major concern for magnet design, as it imposes hard...

527. Fri-Mo-Or2-05: Experimental study on delamination induced by electromagnetic forces in REBCO tapes.

Célia Lucas Esparseil (Université de Genève)

04/07/2025, 09:00

Contributed Oral

This study investigates the delamination behavior of REBCO coated conductors (CCs) using the electromagnetic delamination strength (EDS) method. Unlike the mechanical delamination strength (MDS), which relates stress to structural failure, EDS focuses on the irreversible threshold at which critical current degradation occurs. This distinction is particularly important for high-field magnet...

721. Fri-Mo-Or2-06: Strain measurement of the no-delaminated thermosetting-epoxy-impregnated REBCO coils coated by release agent layers

Dr Peng Song (Department of Mechanical Engineering, Tsinghua University, Beijing, 100084, China.)

04/07/2025, 09:15

Contributed Oral

The delamination problem of the epoxy-impregnated REBCO coils was always an obstacle for REBCO magnet application. To avoid the delamination, recently a novel method that coating release agent layers on the REBCO tapes was proposed, and it has been preliminarily verified by REBCO coils impregnated room-temperature curing epoxy (Stycast 2850). For thermosetting epoxy, like IR3 (supplied by...