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Status of the Hybrid Magnet in Construction at LNCMI-Grenoble

02/04/2013, Pierre Pugnat, LNCMI-Grenoble

 

A CEA-CNRS French collaboration is currently developing a new hybrid magnet to create an overall continuous magnetic field of at least 43 T in a 34 mm warm bore aperture. This magnet combines a resistive insert, composed of Bitter and polyhelix coils, and a large bore superconducting "outsert". The superconducting coil is based on the novel development of a Nb-Ti/Cu Rutherford Cable On Conduit Conductor (RCOCC) cooled down to 1.8 K by a bath of superfluid helium at atmospheric pressure. It aims at producing a nominal magnetic field of 8.5 T in a 1.1 m cold bore diameter. The requirements of the RCOCC will be presented together with design principles and parameters of the cryogenic system. The solution proposed to reduce the couplings between resistive and superconducting coils will be recalled as well as the constraints used for designing the mechanical structure. The design study phase is coming to an end. The status of the conductor production will be given together with next steps of the project.

 

 

 
More informations :

 

 

- Final Design of the New Grenoble Hybrid Magnet, IEEE Trans. Appl. Super. 22, 6092452 (2012) ; http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6092452

- Study and Development of the Superconducting Conductor for the Grenoble Hybrid Magnet, IEEE Trans. Appl. Super. 22, 6001604 (2012) ; http://ieeexplore.ieee.org/xpl/articleDetails.jsp?reload=true&arnumber=6111264