Observation of snake resonances at Relativistic Heavy Ion Collider

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The Siberian snakes are powerful tools in preserving polarization in high energy accelerators has been demonstrated at the Brookhaven Relativistic Heavy Ion Collider (RHIC). Equipped with two full Siberian snakes in each ring, polarization is preserved during acceleration from injection to 100 GeV. However, the Siberian snakes also introduce a new set of depolarization resonances, i.e. snake resonances as first discovered by Lee and Tepikian. The intrinsic spin resonances above 100 GeV are about a factor of two stronger than those below 100 GeV which raises the challenge to preserve the polarization up to 250 GeV. In 2009, polarized protons ... continued below

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Bai, M.; Ahrens, L.; Alekseev, I.G.; Alessi, J. & al, et September 27, 2010.

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The Siberian snakes are powerful tools in preserving polarization in high energy accelerators has been demonstrated at the Brookhaven Relativistic Heavy Ion Collider (RHIC). Equipped with two full Siberian snakes in each ring, polarization is preserved during acceleration from injection to 100 GeV. However, the Siberian snakes also introduce a new set of depolarization resonances, i.e. snake resonances as first discovered by Lee and Tepikian. The intrinsic spin resonances above 100 GeV are about a factor of two stronger than those below 100 GeV which raises the challenge to preserve the polarization up to 250 GeV. In 2009, polarized protons collided for the first time at the RHIC design store energy of 250 GeV. This paper presents the experimental measurements of snake resonances at RHIC. The plan for avoiding these resonances is also presented.

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  • 19th International Spin Physics Symposium (SPIN 2010); Juelich, Germany; 20100927 through 20101002

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  • Report No.: BNL--96740-2012-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 1034745
  • Archival Resource Key: ark:/67531/metadc836418

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  • September 27, 2010

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  • May 19, 2016, 3:16 p.m.

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  • June 9, 2016, 4:49 p.m.

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Bai, M.; Ahrens, L.; Alekseev, I.G.; Alessi, J. & al, et. Observation of snake resonances at Relativistic Heavy Ion Collider, article, September 27, 2010; United States. (digital.library.unt.edu/ark:/67531/metadc836418/: accessed December 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.