Acceleration of polarized protons and deuterons in the ion collider ring of JLEIC

A. M. Kondratenko, M. A. Kondratenko, Yu N. Filatov, Ya S. Derbenev, F. Lin, V. S. Morozov, Y. Zhang

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

Abstract

The figure-8-shaped ion collider ring of Jefferson Lab Electron-Ion Collider (JLEIC) is transparent to the spin. It allows one to preserve proton and deuteron polarizations using weak stabilizing solenoids when accelerating the beam up to 100 GeV/c. When the stabilizing solenoids are introduced into the collider's lattice, the particle spins precess about a spin field, which consists of the field induced by the stabilizing solenoids and the zero-integer spin resonance strength. During acceleration of the beam, the induced spin field is maintained constant while the resonance strength experiences significant changes in the regions of "interference peaks". The beam polarization depends on the field ramp rate of the arc magnets. Its component along the spin field is preserved if acceleration is adiabatic. We present the results of our theoretical analysis and numerical modeling of the spin dynamics during acceleration of protons and deuterons in the JLEIC ion collider ring. We demonstrate high stability of the deuteron polarization in figure-8 accelerators. We analyze a change in the beam polarization when crossing the transition energy.

Original languageEnglish
Article number012011
JournalJournal of Physics: Conference Series
Volume874
Issue number1
DOIs
StatePublished - Jul 20 2017
Externally publishedYes
Event8th International Particle Accelerator Conference, IPAC 2017 - Copenhagen, Denmark
Duration: May 14 2017May 19 2017

Funding

This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contracts DE-AC05-06OR23177 and DE-AC02-06CH11357.

FundersFunder number
U.S. Department of Energy
Office of Science
Nuclear PhysicsDE-AC02-06CH11357, DE-AC05-06OR23177

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