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MSC Seminars
HTS Magnet developments for high fields AND High energy density SMES as pulse power source for supplying electromagnetic launchers
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Europe/Zurich
112/R-028 (CERN)
Description
Session 1 :
Title: HTS Magnet developments for very high fields
Speaker: Tara Benkel
Abstract:
High Temperature Superconductors (HTS) are a strong candidate for high field magnets. As their properties are extraordinary especially under high fields and very low temperatures, there are many ongoing projects around the world. The NOUGAT project aims at building a 10 T insert working first inside a 20 T resistive background. Its objectives are not to reach higher field than the already existing resistive magnets but rather to overcome the main issues of using HTS for this kind of applications and pave the way toward full superconductive magnets at lower cost. YBCO was preferred for the NOUGAT insert even if its implementation is still challenging.
Both insulated and metal insulated (MI) coils have been considered for the NOUGAT project. Due to their self-protection behaviour, MI windings have been selected for building the insert but we are still investigating insulated coils for future applications.
This seminar will present the latest HTS magnet developments for high field magnet at LNCMI.
Session 2 :
Title: High energy density SMES as pulse power source for supplying electromagnetic launchers
Speaker: Jérémie Cicéron
Abstract:
SMES (Superconducting Magnetic Energy Storage) are an interesting solution for high power pulsed source. Since 2015, a SMES program funded by the DGA has been started at the Grenoble CNRS, focusing on the energy density and compactness. Taking advantage of new possibilities offered by the performances of second generation HTS tapes in liquid helium, the BOSSE project has the objective to build a 1 MJ SMES with high energy density (20kJ/kg in a self- supporting winding). A reflection about maximizing the specific energy and the balance of contradictory objectives in the design of a SMES is presented.
The SMES of BOSSE project will be a solenoid made of 48 stacked REBCO pancakes with 180mm inner diameter and 240mm outer diameter. A new prototype pancake, corresponding to the central pancakes of the solenoid (i.e. made of 6mm wide REBCO tape), has been manufactured and tested in background field up to 8T, using a large bore resistive magnet at LNCMI Grenoble. The aim of these tests was to study both electric and mechanical limits of the prototype pancake, in field environment up to the range expected to be reached in the full SMES demonstrator.