Final Assembly of the Helmholtz-Zentrum Berlin Series-Connected Hybrid Magnet System

Abstract

Abstract-The final assembly of the Series-Connected Hybrid magnet system for the Helmholtz-Zentrum Berlin for Materials and Energy (HZB) has occurred with the integration of the superconducting cold mass, cryostat, resistive Florida-Bitter coils, and the cryogenic, chilled water, power, and control subsystems. The hybrid magnet consists of a 13-T superconducting Nb 3 Sn/CICC coil and a set of 12-T resistive, water cooled coils at 4.4 MW. Much of the cryostat and cold mass functional requirements were dictated by the electromagnetic interactions between the superconducting and resistive coils. This includes the radial decentering and axial aligning forces from normal operations and a 1.1 MN fault load. The system assembly was an international achievement with the cold mass being completed at the NHMFL in the USA, cryostat to cold mass interfaces made at Criotec Impianti in Italy, and final assembly at the HZB in Germany.

Field-induced spin-density wave beyond hidden order in URu2Si2

“…CeRu 2 Si 2 , where critical magnetic fluctuations were reported at the La-doping- and magnetic-field-induced instabilities5253). However, inelastic neutron scattering under steady fields up to 40 T, which is far beyond the present state of the art (26 T achieved recently at the neutron source in Berlin54), would be needed to unveil the high-field evolution of the magnetic fluctuations in URu 2 Si 2 .…”

HFM/EXED: The High Magnetic Field Facility for Neutron Scattering at BER II

“…In addition, the magnet system sits on an instrument table so it can rotate ±15°for increased neutron scatteringangle. All cryogenic and electrical utilities port through an upper "turret" for interface with the supply systems (Dixon et al, 2015). The main technical parameters are listed in Table 1 and a vertical section of the magnet system is shown in Figure 2a.…”

First Hybrid Magnet for Neutron Scattering at Helmholtz-Zentrum Berlin

“…The fabrication of the superconducting cable-in-conduit coil and the cold-mass assembly was completed at the National High Magnetic Field Laboratory (NHMFL), Tallahassee, USA at the end of 2013 [17], [18]. Finally the cold mass was transported to Europe for further assembly into the magnet cryostat together with a pair of 20 kA current leads [19]. A sectional view of the magnet system is shown in Fig.…”