Polarization Issues in Run 2008

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The RHIC proton beam polarization has a strong dependence on intensity in Run 2008, whereas the dependence is almost absent in Run 2006. Meanwhile, the RHIC beam transverse emittance also has a dependence on intensity in Run 2008, but little in Run 2006. Using the emittance measurement at the AGS IPM and the BtA multiwires, the source of this difference between 2006 and 2008 runs is traced to the Booster. It is found that at least the degree of the vertical scraping in the Booster is different in 2006 and 2008. The effect of this scraping for the RHIC beam ... continued below

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Zhang,S.Y.; Ahrens, L.; Huang, H. & Zeno, K. July 1, 2008.

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The RHIC proton beam polarization has a strong dependence on intensity in Run 2008, whereas the dependence is almost absent in Run 2006. Meanwhile, the RHIC beam transverse emittance also has a dependence on intensity in Run 2008, but little in Run 2006. Using the emittance measurement at the AGS IPM and the BtA multiwires, the source of this difference between 2006 and 2008 runs is traced to the Booster. It is found that at least the degree of the vertical scraping in the Booster is different in 2006 and 2008. The effect of this scraping for the RHIC beam emittance and polarization is studied.

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  • Report No.: BNL--81597-2008-IR
  • Grant Number: DE-AC02-98CH10886
  • DOI: 10.2172/939984 | External Link
  • Office of Scientific & Technical Information Report Number: 939984
  • Archival Resource Key: ark:/67531/metadc893611

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  • July 1, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 1, 2016, 5 p.m.

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Zhang,S.Y.; Ahrens, L.; Huang, H. & Zeno, K. Polarization Issues in Run 2008, report, July 1, 2008; United States. (digital.library.unt.edu/ark:/67531/metadc893611/: accessed November 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.