Booster

The main goals of the Booster are the following:

accumulation of 2∙10⁹ Au³¹⁺ ions; acceleration of the heavy ions up to energy required for effective stripping;
forming of the required beam emittance with electron cooling system;
providing a fast extraction of the accelerated beam for its injection into the Nuclotron.

Run through the booster tunnel. Video was taken in 2019.

The present layout makes it possible to place the Booster having 211 m circumference and four fold symmetry lattice inside the yoke of the Synchrophasotron.

Model of the booster dipole magnet. Nuclotron-type magnets include a cold (4.5K) window frame iron yoke and a winding made of a hollow NbTi composite SC cable cooled with a two-phase helium flow. The iron yoke of the dipole magnet consists of two symmetric parts that are bolted together. The half-yokes of the dipole are fabricated of laminated isotropic 0.65 mm thick electrical steel M530. The laminations are compressed by strength of 50 kN and clamped together with four stainless steel angle-profile 10 mm thick. The magnet is 2.2 m long and has a radius of the curvature of about 14 m.

Model of the booster quadrupole magnet. Nuclotron-type magnets include a cold (4.5K) window frame iron yoke and a winding made of a hollow NbTi composite SC cable cooled with a two-phase helium flow. The iron yoke of the dipole magnet consists of two symmetric parts that are bolted together. The half-yokes of the dipole are fabricated of laminated isotropic 0.65 mm thick electrical steel M530. The laminations are compressed by strength of 50 kN and clamped together with four stainless steel angle-profile 10 mm thick. The magnet is 2.2 m long and has a radius of the curvature of about 14 m.