2021•IEEE Transactions on Applied SuperconductivityRequires access
Assembly and Warm Magnetic Measurement of MQYYM: A 90 mm NbTi Quadrupole Magnet Option for HL-LHC
S. Perraud, D. Simon, H. Félice, M. Segreti, A. Madur, J. M. Rifflet, R. Correia Machado, R. Godon, D. Bouziat, S. Emami Naini, Lucio Fiscarelli, A. Foussat, J.M. Gheller, Michael Guinchard, Gilles Minier, J. C. Pérez, Carlo Petrone, E. Todesco
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Abstract
In the framework of the HL-LHC project, a NbTi double aperture quadrupole magnet MQYY is being developed as an option to replace the LHC magnet MQY. This 90 mm double aperture cos-2θ quadrupole has an operating gradient of 120 T/m at 1.9 K. To demonstrate the validity of the design, a single aperture short model of 1.2 m called MQYYM has been developed. Designed by CEA and manufactured in collaboration with CERN, the MQYYM magnet is being prepared for cold test at CEA in a dedicated cryogenic station with LHe bath at 1 bar 4.2 K and 23 mbar 1.9 K. First, this paper will summarize the initial and as-built magnet designs based on the assembly at CERN. Second, updated mechanical measurements of collaring and axial pre-loading will be presented. Finally warm magnetic measurements performed at CERN during the assembly and at CEA during test preparation will be detailed.