Conveners
Tue-Mo-Orals Session 1: Magnet Design and Quench Protection
- Rainer Wesche (Ecole Polytechnique Fédérale de Lausanne (EPFL))
Herman Ten Kate
(CERN)
08/07/2014, 11:00
C-09: Accelerators and detectors
Invited Oral (30min)
Early 2014 a new design study has started at CERN for a future 100 TeV circular proton-proton collider, a factor 7 more than in the present LHC. A new 100 km tunnel for the collider magnets is foreseen as well as two new general purpose detectors. A conceptual design report is to be issued in 2018 for consideration by CERN and collaborating institutes. The new 100 TeV collider may be...
Yi XU
(RIKEN,Yokohama,Japan;Chiba University,Chiba,Japan)
08/07/2014, 11:30
C-07: Magnet technology
Oral presentation (15min)
A screening current induced in REBCO superconducting layers during coil charging and causes several problems such as hysteresis effect of the central magnetic field and reduction in the central magnetic field intensity. These are critical problems for superconducting coil systems such as NMR. The present work systematically investigated reduction effect of the screening current-induced field...
Davide Uglietti
(EPFL)
08/07/2014, 11:45
C-07: Magnet technology
Oral presentation (15min)
An insert coil was constructed using coated conductor tape without electrical insulation. The coil inner diameter, outer diameter and height are 43 mm, 56 mm and 120 mm respectively; the coil constant is 16.7 mT/A. The coil is composed of 13 double pancakes (270 m of tape in total) with insulating disks placed in between the pancakes; the coil was impregnated with beeswax. The reason for...
Tengming Shen
(Fermilab)
08/07/2014, 12:00
C-07: Magnet technology
Oral presentation (15min)
High temperature superconducting magnets may enable applications ranging from high field magnets generating magnetic fields of >20 T and highly efficient electric power devices such as superconducting magnetic energy storage systems and wind generators. A critical roadblock, however, is to detect a normal zone propagating only at a speed of 1-10 cm/s, while the maximum temperature of the...
Masanori Daibo
(F)
08/07/2014, 12:15
C-07: Magnet technology
Oral presentation (15min)
Recently, high performance REBa2Cu3Ox (REBCO) coated conductors such as over 250 A per 5 mm in width at 77 K have become in commercial. The REBCO coated conductors are expected to show high performance for the superconducting applications because of their high current density and high mechanical strength. The quench behaviors, particularly the normal-zone propagation and increase in hot-spot...
Dr
Wilfried Goldacker
(Institute for Technical Physics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany)
08/07/2014, 12:30
C-07: Magnet technology
Oral presentation (15min)
The high temperature REBCO coated conductor development is progressing in available conductor length and current capacity performance. Such conductors are available commercially and are used in an increasing number of applications. The application in large superconducting magnets (fusion) or high current windings (generators, motors) requires high current carrying conductors with low AC...
Ms
Kyoko Yanagisawa
(RIKEN,Chiba Uneversity)
08/07/2014, 12:45
C-07: Magnet technology
Oral presentation (15min)
The major advantage of REBCO coils is their capability for high current density operation, typically >250 A/mm2. However, if a thermal runaway happens at such a high current density, a hot spot quickly exceeds hazardous temperatures, >300 K, resulting in permanent damage to the coil winding. This is the most serious problem for high-current density REBCO coils and a protection method is...
