MSC Seminars

Lessons learned from the 2-m Nb3Sn 11 T Model Dipole Magnets - From coil fabrication to magnet tests

Name: Lessons learned from the 2-m Nb3Sn 11 T Model Dipole Magnets - From coil fabrication to magnet tests
Start: 2017-10-17T14:00:00+02:00
End: 2017-10-17T15:00:00+02:00
Location: CERN

by Emelie Kristina Nilsson (CERN)

Tuesday 17 Oct 2017, 14:00 → 15:00 Europe/Zurich

30/7-010 (CERN)

30/7-010

CERN

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Description

With its cosine-theta layout, Nb3Sn coils and removable pole, the development of the 60 mm aperture 11 T dipole is paving the way for coming generations of accelerator magnets. As a part of the Large Hadron Collider luminosity upgrade (HiLumi-LHC) program, 11 T Nb3Sn magnets (5.8-m-long) will replace some of the 8.33 T 15-m-long Nb-Ti main dipoles in order to clear longitudinal space for additional collimators. With the aim to verify its design features, several 2-m short models have been constructed and tested at CERN. During the fabrication and assembly of so far six single and two double aperture short model magnets, several challenges have been identified and tackled. This involves reproducibility in coil fabrication and assembly procedure, as well as control of mechanical stresses on the conductor and surrounding structure. All short models reached nominal current of 11.85 kA, but the two latest show limitations near ultimate current. In this talk the progress of the fabrication, assembly and testing of the 11 T short models is summarized.