Numerical calculation of ion polarization in the NICA collider

16th Workshop on High Energy Spin Physics

Kovalenko, A.D.^1 ; Butenko, A.V.^1 ; Kekelidze, V.D.^1 ; Mikhaylov, V.A.^1 ; Kondratenko, M.A.^2 ; Kondratenko, A.M.^2 ; Filatov, Yu N.^1,3

Joint Institute for Nuclear Research, Dubna

141980, Russia^1

Science and Technique Laboratory zaryad, Novosibirsk

630090, Russia^2

Moscow Institute of Physics and Technology, Dolgoprudny

141700, Russia^3

关键词: Deuteron beams;    Emittances;    Ion polarization;    Numerical calculation;    Orbital parameters;    Polarization direction;    Resonance strengths;    Spin resonance;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/678/1/012023/pdf
DOI  :  10.1088/1742-6596/678/1/012023

来源: IOP

【 摘 要 】

The NICA Collider with two solenoid Siberian snakes is "transparent" to the spin. The collider transparent to the spin provides a unique capability to control any polarization direction of protons and deuterons using additional weak solenoids without affecting orbital parameters of the beam. The spin tune induced by the control solenoids must significantly exceed the strength of the zero-integer spin resonance, which contains a coherent part associated with errors in the collider's magnetic structure and an incoherent part associated with the beam emittances. We present calculations of the coherent part of the resonance strength in the NICA collider for proton and deuteron beams.