Conveners
Tue-Mo-Orals Session 3: High Performance RE123 Tapes and Nb3Sn Wires
- Teruo Matsushita (K)
Dr
Alexander Usoskin
(Bruker HTS GmbH), Mr
Tim Bubelis
(Bruker HTS GmbH)
08/07/2014, 11:00
M-02: RE123 conductors processing and properties
Invited Oral (30min)
Pulsed laser deposition (PLD) was implemented in processing of high quality coated conductors of long length. Experimental data on YBCO coated conductor (CC) tapes with a length up to 200 m processed employing a multi-beam PLD (MB-PLD) technique with a throughput up to 40m/hour are presented. The YBCO films were deposited onto stainless steel substrate tapes preliminary coated with bi-axially...
Dr
Dmytro Abraimov
(NHMFL)
08/07/2014, 11:30
M-02: RE123 conductors processing and properties
Oral presentation (15min)
In order to successfully use (Re)BCO conductor in the 32T all-superconducting user magnet, a variety of its properties should be controlled in the required 10 km of tape within specific tolerances defined by the coil design. So far we have evaluated short samples from more than 102 conductor 60-110 m piece lengths, each manufactured by SuperPower Inc. We observe only a small variability of...
Masayoshi Inoue
(Kyushu University)
08/07/2014, 11:45
M-02: RE123 conductors processing and properties
Oral presentation (15min)
For the improvement of Jc in rare-earth based superconducting coated conductor (CC), it is well established that highly oriented substrate is required because Jc across grain boundaries decreases significantly with increase of grain boundary angles. Typical value of the in-plane misalignment of Ion Beam Assisted Deposition (IBAD) substrate is around 3$^\circ$ where intra-grain Jc is almost the...
Chao Zhou
(University of Twente, Faculty of Science & Technology, 7522 NB Enschede, The Netherlands)
08/07/2014, 12:00
M-02: RE123 conductors processing and properties
Oral presentation (15min)
For fusion superconductors in high magnet fields with currents in the order of 50 kA, single ReBCO coated conductors must be assembled in a cable geometry where combined torsion, axial and transverse loading states are anticipated in the tapes and tape joints. Axial and transverse loading, caused by differential thermal contraction and electromagnetic forces, may affect the transport...
Anna Kario
(KIT)
08/07/2014, 12:15
M-02: RE123 conductors processing and properties
Oral presentation (15min)
REBCO Roebel cables combine high current density with low AC loss, and as such are promising for HTS inserts in high-field accelerator magnets (up to 20 T). The Lorentz forces in these magnets accumulate over the windings and may lead to local stress concentrations in the cable structure. An appropriate impregnation of Roebel cables – and eventually coils – redistributes these forces, and thus...
Michael Gerace
(OST)
08/07/2014, 12:30
M-01: NbTi/Nb3Sn processing and properties
Oral presentation (15min)
Oxford Superconducting Technology (OST) has been continuously improving Nb3Sn and Bi-2212 round wire performance for application in high-field magnets. For particle accelerator applications the Nb3Sn development focus has been to reduce the effective filament diameter while maintaining high Jc and RRR. We will present our latest results on 169 stack distributed barrier strand designs with...
Mr
Tomone Suwa
(Japan Atomic Enrgy Agency)
08/07/2014, 12:45
M-01: NbTi/Nb3Sn processing and properties
Oral presentation (15min)
Japan Atomic Energy Agency is procuring all of theNb3Sn cable-in-conduit conductors for ITER Central Solenoid (CS). The CS conductor cable consists of 576 Nb3Sn strands of which diameter are 0.83 mm, 288 Cu strands, a central spiral and stainless steel wraps around the cable. The current sharing temperature (Tcs) of CS conductors with normal-twist-pitch cables degraded with electromagnetic...
