15–19 Nov 2021
Fukuoka Convention Center
Asia/Tokyo timezone

[Invited] Status of the HFML-Nijmegen 45 T Hybrid Magnet

THU-OR5-301-02
18 Nov 2021, 18:45
15m
Fukuoka Convention Center

Fukuoka Convention Center

Speaker

Mr Andries den Ouden (HFML, Radboud University, Nijmegen, The Netherlands)

Description

To extend its user’s facilities the High Field Magnet Laboratory (HFML) of the Radboud University is in the process of building a 45 T hybrid magnet. The magnet system will consist of a 22 MW, 32.7 T Florida-Bitter type of resistive insert and a 600 mm bore, 12.3 T Nb3Sn based CICC type of superconducting outsert magnet. The Nijmegen hybrid magnet will be operated with separate current sources for the superconducting and resistive coils (20 kA at 10 V, and 40 kA at 550 V, respectively). The superconducting outsert coil was wound, heat-treated and impregnated at the National High Magnetic Field Laboratory (FL, USA) and arrived in 2018 in Nijmegen. At present, system assembly and integration near completion, all auxiliary systems are in place and are going through their final commissioning phase. In this paper, we present the status of the cryostat, the binary (Cu/BSCCO) current leads jointly developed by HFML and NHMFL, the cryogenic and electro-technical installations, system control, quench and coil protection and the manufacturing process of the resistive insert. We particularly highlight implemented new concepts for the mechanical support systems of both the insert and the outsert coils.

Primary author

Mr Andries den Ouden (HFML, Radboud University, Nijmegen, The Netherlands)

Co-authors

Mr Chris Wulffers (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Mr Gideon Laureijs (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Mr Bas Peters (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Mr Tim de Bruin (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Dr Frans Wijnen (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Dr Jos Perenboom (High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, the Netherlands) Iain Dixon (Florida State University) Mark Bird (FSU)

Presentation materials