27 August 2017 to 1 September 2017
RAI Congress Center, Amsterdam, The Netherlands
Europe/Amsterdam timezone

Estimation of Losses in the (RE)BCO Two-coil Insert of the NHMFL 32 T All-superconducting Magnet

30 Aug 2017, 13:15
1h 45m
Posters Area

Posters Area

Poster Presentation of 1h45m G4 - Losses in Conductors and Coils Wed-Af-Po3.12

Speaker

Mr Edgar Berrospe-Juarez (Universidad Nacional Autónoma de México)

Description

(RE)BCO commercial coated superconductors have gained an increasing interest for its use in high magnetic field magnets. The leading project is the 32 T DC user magnet to be commissioned soon at the National High Magnetic Field Laboratory, Florida, USA. This state-of-the-art high field all-superconducting magnet, bath-cooled at 4.2 K, is comprised of a two-coil insert pancake-wound with (RE)BCO tapes supplied by SuperPower Inc. and a multi-coil LTS outsert. To ensure the reliable operation of such a complex magnet, it is important to estimate the hysteresis losses which arise in the insert during ramping operations. Such an estimate will allow implementing safe operational procedures to avoid premature quenching of the magnet and, in the worst case, the failure of the insert. The insert coils are assembled from tens of pancakes and thus have thousands of turns, with notable variations in the critical current throughout the pancakes. Therefore, estimating the losses in such a large and complex superconducting magnet presents a significant challenge that requires an efficient strategy without compromising the accuracy of calculations. We propose here a new approach relying on a multi-scale scheme to achieve a high computational efficiency. This new method is flexible enough to simulate different sections of the entire insert with the right level of detail while providing a larger computational speed than other approaches using the finite element method. Estimates of the hysteresis losses in the 17 T insert for a ramping operation sequence are presented.

Submitters Country México

Primary author

Mr Edgar Berrospe-Juarez (Universidad Nacional Autónoma de México)

Co-authors

Dr Víctor Manuel Rodríguez Zermeño (Karlsruhe Institute of Technology) Frederic Trillaud (Universidad Nacional Autónoma de México) Andrey Gavrilin (Florida State University, Florida, USA) Dmytro Abraimov (NHMFL) David K. Hilton, Ph.D. (National High Magnetic Field Laboratory (NHMFL-FSU)) Hubertus Weijers (NHMFL/FSU)

Presentation Materials