“…Its maximum magnetic rigidity of Bρ =25 Tm is provided by 40 1.8 T SC dipole magnets operating at 4.5 K, which can be ramped at 1.2 T/s [388]. The 60 keV electron cooling system of the Booster, needed for ion accumulation and rapid (3-4 sec) reduction of the beam emittance up to 100 MeV/u energies, has been built and commissioned [389,390]. Ions, protons and deuterons are then further accelerated, up to the energy of the collider experiments, using the upgraded Nuclotron synchrotron -a 251.52 m circumference superconducting magnet ring, operational since 1993 [391].…”