Pulsed field magnetization of a bulk HTS with a coil sharing the same cryocooler

Autor: Berger, Kévin, Linares-Lamus, Rafael-Antonio, Kapek, Jakub, Douine, Bruno, Leclerc, Sébastien, Marande, Pierre-Louis, Noudem, Jacques, Koblischka, Michael, Colle, Alexandre, Lévêque, Jean
Přispěvatelé: Groupe de Recherche en Energie Electrique de Nancy (GREEN), Université de Lorraine (UL), Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA ), Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS), Cristallographie, Résonance Magnétique et Modélisations (CRM2), Laboratoire de cristallographie et sciences des matériaux (CRISMAT), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS), Saarland University [Saarbrücken], This work is a part of the SUPERFOAM international project funded by ANR and DFG under the references ANR-17-CE05-0030 and DFG-ANR Ko2323-10, respectively., ANR-17-CE05-0030,SUPERFOAM,Caractérisation et comparaison de nouveaux supraconducteurs massifs(2017), École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Institut de Chimie du CNRS (INC), Institute of Experimental Physics, Berger, Kévin, Caractérisation et comparaison de nouveaux supraconducteurs massifs - - SUPERFOAM2017 - ANR-17-CE05-0030 - AAPG2017 - VALID
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: ASC 2018-Applied Superconductivity Conference
ASC 2018-Applied Superconductivity Conference, Oct 2018, Seattle, Washington, United States. page 37/1LPo2H-08 [L75]
Popis: International audience; Bulk High-Temperature Superconductors (HTS) have been studied extensively in order to act as “permanent magnet” with magnetization largely above conventional rare earth compounds. Recently, a field of 17.6 T has been achieved inside a stack of two GdBCO samples of diameter 25 mm [1]. However, significant technical challenges of bulk superconductors remain in cooling and magnetization technologies for practical applications. Pulsed field magnetization (PFM), which is a traditional method for activating permanent magnets, is considered as the most practical technique to magnetize bulk HTS in superconducting applications. A trapped field of 5.2 T in a bulk superconductor has been reported by Fujishiro et al. [2]. This record value has been achieved by means of an iron core placed above and below the bulk, and using a coil outside the cryostat with dimensions largely greater than the sample.In this paper, we will discuss on the benefit of studying in situ magnetization, with pulsed magnetic fields generated by a small coil sharing the same cryostat than the sample. With this setup, the bulk HTS is attached and cooled down using the second stage of a Sumitomo 204S cryocooler while the magnetizing coil is cooled down with the first stage. Experiments are ongoing in order to improve the test rig. Several key results will be presented such as cooling time, maximal applied field, and trapped fields at several temperatures of a YBCO pellet with a 12 mm height and a diameter of 35 mm. The failed tests and some numerical simulations will complement the obtained results in order to explain the key features of such a system.References[1] J. H. Durrell, et al., Supercond. Sci. Technol. 27 (8), 082001 (2014).[2] H. Fujishiro, et al., Physica C 445, 334-338 (2006).
Databáze: OpenAIRE
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