High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes

Huang, Haixin; Kewisch, J.; Liu, C.; Marusic, A.; Meng, W.; Meot, F.; Oddo, P.; Ptitsyn, V.; Ranjbar, V.; Roser, T.

doi:10.1103/PhysRevLett.120.264804

Title: High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes

Abstract

In polarized proton collision experiments, it is highly advantageous to flip the spin of each bunch of protons during the stores to reduce the systematic errors . Experiments done at energies less than 2GeV have demonstrated a spin flip efficiency over 99%. At high energy colliders with Siberian Snakes, a single magnet spin flipper does not work because of t he large spin tune spread and the generation of multiple, overlapping resonances. A more sophisticated spin flipper, constructed of 9-dipole magnets was used to flip the spin in Relativistic Heavy Ion Collider(RHIC). Special optics choice was also used to make the spin tune spread very small. A 97% spin flip efficiency was measured both at 24GeV and 255GeV. Lastly, these results show that efficient spin flipping can be achieved at high energies using a 9-magnet spin flipper.

Authors:

Huang, Haixin ^[1]; Kewisch, J. ^[1]; Liu, C. ^[1]; Marusic, A. ^[1]; Meng, W. ^[1]; Meot, F. ^[1]; Oddo, P. ^[1]; Ptitsyn, V. ^[1]; Ranjbar, V. ^[1]; Roser, T. ^[1]

Brookhaven National Lab. (BNL), Upton, NY (United States)

Publication Date:: Thu Jun 28 00:00:00 EDT 2018

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1440356

Alternate Identifier(s):: OSTI ID: 1457585

Report Number(s):: BNL-205736-2018-JAAM
Journal ID: ISSN 0031-9007; TRN: US1900725

Grant/Contract Number:: SC0012704; AC02-98CH10886

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 120; Journal Issue: 26; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS

Citation Formats


                    Huang, Haixin, Kewisch, J., Liu, C., Marusic, A., Meng, W., Meot, F., Oddo, P., Ptitsyn, V., Ranjbar, V., and Roser, T. High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes.  United States: N. p., 2018. 
Web.  doi:10.1103/PhysRevLett.120.264804.

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                    Huang, Haixin, Kewisch, J., Liu, C., Marusic, A., Meng, W., Meot, F., Oddo, P., Ptitsyn, V., Ranjbar, V., & Roser, T. High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes.  United States.  https://doi.org/10.1103/PhysRevLett.120.264804

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                    Huang, Haixin, Kewisch, J., Liu, C., Marusic, A., Meng, W., Meot, F., Oddo, P., Ptitsyn, V., Ranjbar, V., and Roser, T. Thu .  
"High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes".  United States.  https://doi.org/10.1103/PhysRevLett.120.264804.  https://www.osti.gov/servlets/purl/1440356.

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@article{osti_1440356,

  title        = {High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes},

  author       = {Huang, Haixin and Kewisch, J. and Liu, C. and Marusic, A. and Meng, W. and Meot, F. and Oddo, P. and Ptitsyn, V. and Ranjbar, V. and Roser, T.},

  abstractNote = {In polarized proton collision experiments, it is highly advantageous to flip the spin of each bunch of protons during the stores to reduce the systematic errors . Experiments done at energies less than 2GeV have demonstrated a spin flip efficiency over 99%. At high energy colliders with Siberian Snakes, a single magnet spin flipper does not work because of t he large spin tune spread and the generation of multiple, overlapping resonances. A more sophisticated spin flipper, constructed of 9-dipole magnets was used to flip the spin in Relativistic Heavy Ion Collider(RHIC). Special optics choice was also used to make the spin tune spread very small. A 97% spin flip efficiency was measured both at 24GeV and 255GeV. Lastly, these results show that efficient spin flipping can be achieved at high energies using a 9-magnet spin flipper.},

  doi          = {10.1103/PhysRevLett.120.264804},

  journal      = {Physical Review Letters},

  number       = 26,

  volume       = 120,

  place        = {United States},

  year         = {Thu Jun 28 00:00:00 EDT 2018},

  month        = {Thu Jun 28 00:00:00 EDT 2018}

}

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Journal Article:

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https://doi.org/10.1103/PhysRevLett.120.264804

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Cited by: 7 works

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Figures / Tables:

FIG. 1:: The schematics of the proposed high energy spin flipper. It consists of five AC dipoles and four DC dipoles.

All figures and tables (5 total)

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Works referenced in this record:

Achieving 99.9% Proton Spin-Flip Efficiency At Higher Energy With A Small rf Dipole
journal, November 2004

Leonova, M. A.; Krisch, A. D.; Morozov, V. S.
Physical Review Letters, Vol. 93, Issue 22
DOI: 10.1103/PhysRevLett.93.224801

Fiddling Carbon Strings with Polarized Proton Beams
conference, January 2006

Huang, Haixin; Kurita, Kazuyoshi
BEAM INSTRUMENTATION WORKSHOP 2006: Twelfth Beam Instrumentation Workshop, AIP Conference Proceedings
DOI: 10.1063/1.2401392

Depolarisation d'un faisceau de protons polarises dans un synchrotron
journal, June 1960

Froissart, Marcel; Stora, Raymond
Nuclear Instruments and Methods, Vol. 7, Issue 3
DOI: 10.1016/0029-554X(60)90033-1

Spin Flipping in the Presence of a Full Siberian Snake
journal, October 1998

Blinov, B. B.; Anferov, V. A.; Derbenev, Ya. S.
Physical Review Letters, Vol. 81, Issue 14
DOI: 10.1103/PhysRevLett.81.2906

Polarized proton collider at RHIC
journal, March 2003

Alekseev, I.; Allgower, C.; Bai, M.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3
DOI: 10.1016/S0168-9002(02)01946-0

Spin Dynamics and Snakes in Synchrotrons
book, June 1997

Lee, S. Y.
DOI: 10.1142/3233

Spin Flipping a Stored Polarized Proton Beam
journal, November 1994

Caussyn, D. D.; Derbenev, Ya. S.; Ellison, T. J. P.
Physical Review Letters, Vol. 73, Issue 21
DOI: 10.1103/PhysRevLett.73.2857

Full spin flipping in the presence of full Siberian Snake
journal, September 2008

Bai, M.; Roser, T.
Physical Review Special Topics - Accelerators and Beams, Vol. 11, Issue 9
DOI: 10.1103/PhysRevSTAB.11.091001

Comment on “Full spin flipping in the presence of full Siberian Snake”
journal, September 2009

Mane, S. R.
Physical Review Special Topics - Accelerators and Beams, Vol. 12, Issue 9
DOI: 10.1103/PhysRevSTAB.12.099001

Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all
journal, September 2016

Accardi, A.; Albacete, J. L.; Anselmino, M.
The European Physical Journal A, Vol. 52, Issue 9
DOI: 10.1140/epja/i2016-16268-9

$99.6 %$ Spin-Flip Efficiency in the Presence of a Strong Siberian Snake
journal, December 2001

Blinov, B. B.; Etienne, Z. B.; Krisch, A. D.
Physical Review Letters, Vol. 88, Issue 1
DOI: 10.1103/PhysRevLett.88.014801

Figures / Tables found in this record:

Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.

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Similar Records

Title: High spin flip efficiency at 255GeV for polarized protons in a ring with two full Siberian Snakes

Abstract

Citation Formats

Figures / Tables:

Achieving 99.9% Proton Spin-Flip Efficiency At Higher Energy With A Small rf Dipole journal, November 2004

Fiddling Carbon Strings with Polarized Proton Beams conference, January 2006

Depolarisation d'un faisceau de protons polarises dans un synchrotron journal, June 1960

Spin Flipping in the Presence of a Full Siberian Snake journal, October 1998

Polarized proton collider at RHIC journal, March 2003

Spin Dynamics and Snakes in Synchrotrons book, June 1997

Spin Flipping a Stored Polarized Proton Beam journal, November 1994

Full spin flipping in the presence of full Siberian Snake journal, September 2008

Comment on “Full spin flipping in the presence of full Siberian Snake” journal, September 2009

Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all journal, September 2016

9 9 . 6 % Spin-Flip Efficiency in the Presence of a Strong Siberian Snake journal, December 2001

Achieving 99.9% Proton Spin-Flip Efficiency At Higher Energy With A Small rf Dipole
journal, November 2004

Fiddling Carbon Strings with Polarized Proton Beams
conference, January 2006

Depolarisation d'un faisceau de protons polarises dans un synchrotron
journal, June 1960

Spin Flipping in the Presence of a Full Siberian Snake
journal, October 1998

Polarized proton collider at RHIC
journal, March 2003

Spin Dynamics and Snakes in Synchrotrons
book, June 1997

Spin Flipping a Stored Polarized Proton Beam
journal, November 1994

Full spin flipping in the presence of full Siberian Snake
journal, September 2008

Comment on “Full spin flipping in the presence of full Siberian Snake”
journal, September 2009

Electron-Ion Collider: The next QCD frontier: Understanding the glue that binds us all
journal, September 2016

$99.6 %$ Spin-Flip Efficiency in the Presence of a Strong Siberian Snake
journal, December 2001