Sector DC Dipoles Design for the Beam Test Facility Upgrade

The Beam Test Facility (BTF) is part of the DAΦNE accelerators system of INFN Frascati National Laboratory (LNF). It is a transfer-line optimized for selection, attenuation and manipulation of electrons and positrons extracted from the DAΦNE LINAC. An upgrade of the line is scheduled by the end of 2018 in order to reach a beam energy of 920 MeV (compared to the actual 750 MeV), and adding a new branch to the present transfer line, in order to use two different beam lines. The layout of the new lines foresees seven new quadrupoles, one fast ramped dipole, two H-shape sector dipoles, and finally a C-shape sector dipole. In this paper, the magnets requirements, all the magnetic design aspects of the two H-shape and of the C-shape sector dipoles shall be presented, including the Finite Elements Analysis (F.E.A.), the sizing of the water-cooling and an overview of the status of the manufacturing.