Magnetic Measurements of the NICA Booster Superferric Magnets

Nuclotron-based Ion Collider fAcility (NICA) is a new accelerator collider complex currently under construction at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. The facility includes a new superconducting booster synchrotron whose layout includes 40 dipole and 48 quadrupole superferric magnets. Booster magnets are under serial production, assembling and testing at the new test facility at JINR, Dubna. The designs of NICA magnets are based on the Nuclotron magnet design. The dipole magnets for the NICA booster have a length of 2.14 m, an aperture of 128/165 mm, and a curved yoke with bending radius of 14.1 m. Two quadrupole magnets are connected together to form a doublet. Measurement of the magnetic field parameters are assumed for each booster magnet. 80% of the dipole magnets and 10% of the doublets have successfully passed the tests. We present the cold test results that were obtained from the magnetic measurements of dipole magnets and compare them with the requirements of the specification. Preliminary results of cold magnetic measurements of the first serial doublets are summarized here.