Proton-Spin-Flipping System Based on Orbit-Steerer Dipoles in the Nuclotron/JINR Operating at the γG = 7 Spin Resonance

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Abstract

We propose a system to produce multiple spin reversals of a polarized proton beam based on orbit-steerer dipoles already installed in the Nuclotron, a superconducting synchrotron at the Joint Institute for Nuclear Research, when the latter operates in the spin-transparency regime. The beam momentum of 3.54 GeV/c corresponds to the integer spin resonance γG=7">γG=7. We report the results of numerical simulation of the proton spin dynamics pertinent to the acceleration up to γG=7">γG=7, including the adiabatic capture of spins by navigators and the subsequent multiple spin flips. A feasibility of the pilot experiment to verify our approach with the current magnetic lattice of the Nuclotron is discussed. To preserve the beam polarization during the crossing of integer resonances we propose to employ intentional resonance-strength enhancements effected by controlled variations of the beam orbit during acceleration.

About the authors

Yu. N. Filatov

Moscow Institute of Physics and Technology (National Research University);Joint Institute for Nuclear Research

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia;141980, Dubna, Moscow region, Russia

A. M. Kondratenko

Moscow Institute of Physics and Technology (National Research University);Science and Technique Laboratory Zaryad

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia;630090, Novosibirsk, Russia

N. N. Nikolaev

Moscow Institute of Physics and Technology (National Research University);Landau Institute for Theoretical Physics, Russian Academy of Sciences

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia;142432, Chernogolovka, Moscow region, Russia

Yu. V. Senichev

Moscow Institute of Physics and Technology (National Research University);Institute for Nuclear Research, Russian Academy of Sciences

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia;108840, Troitsk, Moscow, Russia

M. A. Kondratenko

Moscow Institute of Physics and Technology (National Research University);Science and Technique Laboratory Zaryad

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia;108840, Troitsk, Moscow, Russia

S. V. Vinogradov

Moscow Institute of Physics and Technology (National Research University)

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia

E. D. Tsyplakov

Moscow Institute of Physics and Technology (National Research University)

Email: filatov.iun@mipt.ru
141701, Dolgoprudnyi, Moscow region, Russia

A. V. Butenko

Joint Institute for Nuclear Research

Email: filatov.iun@mipt.ru
141980, Dubna, Moscow region, Russia

S. A. Kostromin

Joint Institute for Nuclear Research

Author for correspondence.
Email: filatov.iun@mipt.ru
141980, Dubna, Moscow region, Russia

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