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Description
Within the framework of the International Muon Collider Collaboration (IMCC), researchers are involved in a feasibility study to develop high-temperature superconducting (HTS) magnets for the proposed 10 km collider ring, designed to reach a 10 TeV center-of-mass energy. Due to the short lifetime of muons of only 2.2 µs, the machine must minimize the acceleration time of the particles allowing them to collide before they decay. To optimize the machine cost and maximize the collider luminosity, the superconducting dipoles of the collider ring must be compact and generate high steady-state magnetic field. In addition, they must feature large apertures to assure enough space for the insertion of a shielding structure needful to preserve superconducting coil from interacting with products of muons decays. These demanding specifications pose significant technological challenges for the dipole magnets design, both in terms of physics and engineering.
In this contribution we update the 2D cosѳ electromagnetic and mechanical design of the main collider dipoles. Since the coil design requires the use of REBCO tapes (whose magnetization effect in field quality and losses is not negligible), an analytical code has been written in MATLAB to evaluate the electromagnetic performances considering non-uniform current distribution inside REBCO tapes according with Brandt model. Validation study of the code - by comparing the results with finite element method (FEM) simulations - is also presented in this work. This includes a comparison of computational time between the analytical and FEM method, to better appreciate the advantages of the two calculation methods and their accuracies.
