Polarized proton experiment in the AGS with a partial snake

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In three polarized proton runs at the AGS it was recently shown that the imperfection depolarizing resonances in the AGS can be overcome with a 5% partial snake and the intrinsic depolarizing resonances could be jumped with the pulsed tune-jump quadrupoles even in the presence of the partial snake. For the first time polarized proton beam was accelerated up to the required RHIC injection energy of 25 GeV. No polarization was lost due to the imperfection resonances and the depolarization from most intrinsic resonances was avoided with the tune-jump quadrupoles. However, significant amount of polarization was lost at 0+{nu}{sub y}, ... continued below

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4 p.

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Huang, H.; Ahrens, L. & Alessi, J.G. December 1, 1996.

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Description

In three polarized proton runs at the AGS it was recently shown that the imperfection depolarizing resonances in the AGS can be overcome with a 5% partial snake and the intrinsic depolarizing resonances could be jumped with the pulsed tune-jump quadrupoles even in the presence of the partial snake. For the first time polarized proton beam was accelerated up to the required RHIC injection energy of 25 GeV. No polarization was lost due to the imperfection resonances and the depolarization from most intrinsic resonances was avoided with the tune-jump quadrupoles. However, significant amount of polarization was lost at 0+{nu}{sub y}, 12+{nu}{sub y} and 36+{nu}{sub y}, which is believed to be partially due to coupling resonances. A novel energy-jump method and other new schemes to overcome the coupling and intrinsic resonances are discussed.

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4 p.

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INIS; OSTI as DE97001532

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  • 12. international symposium on high energy spin physics, Amsterdam (Netherlands), 10-14 Sep 1996

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  • Other: DE97001532
  • Report No.: BNL--63066
  • Report No.: CONF-960934--3
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 414420
  • Archival Resource Key: ark:/67531/metadc677128

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • December 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Nov. 9, 2015, 8:22 p.m.

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Huang, H.; Ahrens, L. & Alessi, J.G. Polarized proton experiment in the AGS with a partial snake, article, December 1, 1996; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc677128/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.