Laboratory link : http://irfu.cea.fr/dacm/Phocea/Vie_des_labos/Ast/ast_groupe.php?id_groupe=297
The Large Hadron Collider (LHC) at CERN is now in exploitation phase. The European physicians on particle physic community has already started the conceptual studies for the Future Circular Collider (FCC) with a collision energy increase to nearly 100 TeV to go deeper in the LHC studies possibility (14 TeV). Such a device would keep the leadership position of the European community in term of high energy physics. In the interaction (IR) area of this accelerator, few specific quadrupole magnets are needed in order to increase the luminosity (the number of collision with time unit) and the statistic related to new particles discovery. Such magnets have to generate a high magnetic field gradient in the largest possible aperture. High Field Superconductors (HFS, also called High Temperature Superconductors: HTS) would find here a use justification considering the higher cost compared to classical Low Temperature Superconductors (LTS).
We are proposing to demonstrate the feasibility of an interaction quadrupole magnet with a gradient over 150 T/m (1.5 time the FCC IR quadrupole gradient) in an aperture of 210 mm (design FCC). Such magnets will require specific design consideration and optimization, new winding technics and insulation process to be able to protect it against fast resistive transition.
The PhD student will interact with DACM team in order to design a quadrupole magnet corresponding to the accelerators requirement. A design step will be necessary in order to develop the fabrication process. Nevertheless the student will be able to look at specific aspect of the magnet fabrication, like the insulation or the protection aspects in such very high energy magnets.