Apr 9 – 13, 2018
Beurs van Berlage
Europe/Zurich timezone

Microstructural Analysis of Tl-1223 Superconducting Layers for the FCC Beam Screen

Apr 10, 2018, 5:00 PM
1h 30m
Beurs van Berlage

Beurs van Berlage

Damrak 243, 1012 ZJ Amsterdam, Netherlands
Board: 2AMSP08
FCC-hh ACC Poster session

Speaker

Sigrid Holleis (TU Wien)

Description

A part of the FCC-hh design study explores different superconducting materials, which could be suitable to function as a coating on the beam screen, held at 50 K. Such a superconducting coating should be able to carry the beam image currents and lower the beam impedance in order to guarantee a high beam stability margin. Our study focuses on the still technologically unexploited thallium-based cuprates. For the development of the coating thin films of Tl-1223 are grown on untextured silver substrates. We present the microstructural analysis of these Tl-based films, performed with Scanning Electron Microscopy and Transmission Electron Microscopy where the chemical composition of the superconducting grains and especially the formation of the Tl-1223 phase is demonstrated. Furthermore, we present superconducting properties of the Tl-based films which are investigated by means of magnetization measurements and Scanning Hall Probe Microscopy. With magnetic field mapping we can investigate the global critical current homogeneity and compare microstructural features with the current distribution in superconducting grains and across grain boundaries.

Primary author

Co-authors

Thomas Baumgartner (TU Wien, Atominstitut) Johannes Bernardi Karin Whitmore (TU Wien) Mrs Alice Moros (Technische Universität Wien) Alessandro Leveratto (CNR-SPIN) Emilio Bellingeri (CNR-SPIN) Sergio Calatroni (CERN) Michael Eisterer (Vienna University of Technology (AT))

Presentation materials