2020/08/17 by A.V. Zlobin, Zlobin, Alexander V, I. Novitski +3 · 1 citation
Engineering · #Accelerator Physics (physics.acc-ph) #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Particle Accelerators and Free-Electron Lasers #Particle accelerators and beam dynamics #Superconducting Materials and Applications
paper · pdf · doi:10.48550/arxiv.2008.07403
openalex publication_date 2020/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The U.S. Magnet Development Program (US-MDP) is aimed at developing high\nfield accelerator magnets with magnetic fields beyond the limits of Nb3Sn\ntechnology. Recent progress with composite wires and Rutherford cables based on\nthe first generation high temperature superconductor Bi2Sr2CaCu2O8\n(Bi2212) allows considering them for this purpose. However, Bi2212 wires and\ncables are sensitive to transverse stresses and strains, which are large in\nhigh-field accelerator magnets. This requires magnet designs with stress\nmanagement concepts to manage azimuthal and radial strains in the coil windings\nand prevent degradation of the current carrying capability of Bi2212 conductor\nor even its permanent damage. This paper describes a novel stress management\napproach, which was developed at Fermilab for high-field large-aperture\nNb3Sn accelerator magnets, and is now being applied to high-field dipole\ninserts based on Bi2212 Rutherford cable. The insert conceptual design and main\nparameters, including the superconducting wire and cable, as well as the coil\nstress management structure, key technological steps and approaches, test\nconfigurations and their target parameters are presented and discussed.\n