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

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.

Authors:
 [1];  [1];  [2];  [3];  [4];  [4];  [4]
  1. Novosibirsk State Univ. (Russian Federation)
  2. Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation)
  3. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); Novosibirsk State Univ. (Russian Federation)
  4. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1373266
Report Number(s):
JLAB-ACP-17-2442; DOE/OR/23177-4113
DOE Contract Number:
AC05-06OR23177
Resource Type:
Conference
Resource Relation:
Journal Name: J.Phys.Conf.Ser.; Journal Volume: 874; Journal Issue: 1; Conference: 8th International Particle Accelerator Conference (IPAC 2017), 14-19 May 2017. Copenhagen, Denmark
Country of Publication:
United States
Language:
English

Citation Formats

Kondratenko, A., Kondratenko, M., Filatov, Yu. N., Derbenev, Yaroslav S., Lin, Fanglei, Morozov, Vasily S., and Zhang, Yuhong. Acceleration of polarized protons and deuterons in the ion collider ring of JLEIC. United States: N. p., 2017. Web. doi:10.1088/1742-6596/874/1/012011.
Kondratenko, A., Kondratenko, M., Filatov, Yu. N., Derbenev, Yaroslav S., Lin, Fanglei, Morozov, Vasily S., & Zhang, Yuhong. Acceleration of polarized protons and deuterons in the ion collider ring of JLEIC. United States. doi:10.1088/1742-6596/874/1/012011.
Kondratenko, A., Kondratenko, M., Filatov, Yu. N., Derbenev, Yaroslav S., Lin, Fanglei, Morozov, Vasily S., and Zhang, Yuhong. Sat . "Acceleration of polarized protons and deuterons in the ion collider ring of JLEIC". United States. doi:10.1088/1742-6596/874/1/012011. https://www.osti.gov/servlets/purl/1373266.
@article{osti_1373266,
title = {Acceleration of polarized protons and deuterons in the ion collider ring of JLEIC},
author = {Kondratenko, A. and Kondratenko, M. and Filatov, Yu. N. and Derbenev, Yaroslav S. and Lin, Fanglei and Morozov, Vasily S. and Zhang, Yuhong},
abstractNote = {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.},
doi = {10.1088/1742-6596/874/1/012011},
journal = {J.Phys.Conf.Ser.},
number = 1,
volume = 874,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2017},
month = {Sat Jul 01 00:00:00 EDT 2017}
}

Conference:
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