Conveners
Tue-Af-Posters Sessions 1.5: NbTi and Nb3Sn Superconductors and Stability
- Arnaud Foussat (CERN)
Dr
Liudmila Potanina
(Russia Scientific R&D Cable Institute (JSC VNIIKP))
08/07/2014, 14:15
Poster presentation (105min)
The study of defects generated in superconducting filaments of Nb3Sn strands under electromagnetic and thermal cycling was carried out for the TFRF3 cable-in-conduit-conductor (CICC) sample passed final testing at the SULTAN test facility. The TFRF3 sample was manufactured from the qualification RF toroidal field CICC. The strand samples were taken from different locations in cross–section of...
Chao Zhou
(University of Twente, Faculty of Science & Technology, 7522 NB Enschede, The Netherlands)
08/07/2014, 14:15
Poster presentation (105min)
Aiming for a better quantitative description of superconducting strand degradation in large ITER Cable In Conduit Conductors (CICC), the electromagnetic-mechanical modeling of strain-sensitive Nb3Sn strands and full-size CICCs is essential. A numerical strand model is built based on accurate intra-strand resistance data, computed spatial filament strain distribution and experimentally obtained...
Ms
Anna Frolova
(Mechanical Engineering Research Institute of the Russian Academy of Sciences)
08/07/2014, 14:15
Poster presentation (105min)
NbTi superconductors are traditionally produced by a process, which comprises many stages. It is characterized by large true strain, as well as high energy, labor and time consumption.
A combining severe plastic deformation by rolling (SPDR) with pulse current for various kinds of materials leads to a decrease in flow stresses and microstructure refinement, as well as to improvement of the...
Kiyosumi Tsuchiya
(K)
08/07/2014, 14:15
Poster presentation (105min)
We have been developing Nb3Al wires processed by a rapid heating and quenching for a number of years as a promising candidate for use in future high-field accelerator magnets. These wires have better strain and stress tolerance than Nb3Sn wires. However, to meet the demands for future accelerator magnet designs, it is necessary to enhance the performance of Nb3Al wires, particularly their...
Kostyantyn Yagotyntsev
(University of Twente, Faculty of Science & Technology, 7522 NB Enschede, The Netherlands)
08/07/2014, 14:15
Poster presentation (105min)
Each strand-cable-jacket combination of ITER magnet conductor will undergo a characterization in which the AC losses are evaluated as a function of mechanical load cycling, to simulate the expected Lorentz loading during the lifetime of the magnet. A first series of ITER conductor tests with the press have commenced on Cable In Conduit Conductors (CICCs) manufactured at different ITER Domestic...
440.
Transverse pressure dependence of the critical current in Nb3Sn Rutherford cables up to 200 MPa
Mr
Peng Gao
(University of Twente)
08/07/2014, 14:15
M-01: NbTi/Nb3Sn processing and properties
Poster presentation (105min)
The transverse pressure dependence of the critical current in various Nb3Sn Rutherford cables is reported. CERN has prepared for the 11 T so-called Dispersion Suppression (DS) dipole magnets constructed in the frame of the LHC luminosity upgrade, cables from different types of strand either with or without AC-loss suppressing central core. Since Nb3Sn is a brittle material and the Lorentz...
