"Towards the successor of Large Hadron Collider"
This event is part of the HEE Seminar Series.
European political establishment has made a strategical commitment to particle accelerator infrastructures. This commitment has manifested into the realization of Large Hadron Collider, the world's largest particle accelerator complex locating in the surroundings of Geneve, Switzerland in CERN. This synchrotron-type accelerator has 27 km long main storage ring and nominal hadron center-of-mass collision energy of 13 TeV. Currently, there is an ongoing design phase for a post-LHC hadron collider in a so-called Future Circular Collider (FCC) framework. The most ambitious plan is to produce 100 TeV center of mass hadron collisions with a scientific instrument having circumference of 100 km and 16 T main bending magnets. The R&D of the main components is distributed European-wide to CERN, accelerator laboratories and universities. The eventual realization of this accelerator is a political decision based on the physics case, technological feasibility of the device and its cost. This is to be taken within the next four years. The most expensive component family in a synchrotron consists of various superconducting magnets. Three magnet groups within this family are of special importance from their cost point of view: huge detector magnets, numerous main bending dipoles and focusing quadrupoles. After introducing the topical field of state-of-the-art synchrotron accelerators, we focus on the design of the dipole magnets for FCC. Within this very multiphysical topic we present the requirements for the design and go especially to the protection studies of such devices. These protection studies are of utmost importance because the multi-billion instrument can become useless when during nominal operation the superconducting state is lost in the magnets carrying copper current density around 1200 A/mm^2. This topic is also very multidisciplinary because it combines thermodynamics, electromagnetics and mechanics in an inseparable way.