Polarization Control of Proton and Deuteron Beams in Spin Transparency Mode at the NICA Accelerator Complex

Abstract A new method for the control of the polarization direction of light nuclei in the NICA accelerator complex is analyzed. The spin transparency (ST) mode for the NICA collider is considered across a continuous energy range with two solenoid snakes and at discrete energies corresponding to integer spin resonances. The feasibility of experimental verification of spin navigators in the ST mode of the Nuclotron, which operates as an injector of polarized protons and deuterons into the NICA collider, is discussed. The proposed spin navigators can be used to control the spin orientation of protons in beams extracted from the Nuclotron. An option for a new figure-eight shaped injector ring for the polarization control of any particle type across the entire beam energy range of the NICA complex is discussed.