HIGH ENERGY HADRON POLARIMETRY.

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Proton polarimetry at RHIC uses the interference of electromagnetic (EM) and hadronic scattering amplitudes. The EM spin-flip amplitude for protons is responsible for the proton's anomalous magnetic moment, and is large. This then generates a significant analyzing power for small angle elastic scattering. RHIC polarimetry has reached a 5% uncertainty on the beam polarization, and seem capable of reducing this uncertainty further. Polarized neutron beams ax also interesting for RHIC and for a polarized electron-polarized proton/ion collider in the fume. In this case, deuterons, for example, have a very small anomalous magnetic moment, making the approach used for protons impractical. ... continued below

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BUNCE,G. September 10, 2007.

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Proton polarimetry at RHIC uses the interference of electromagnetic (EM) and hadronic scattering amplitudes. The EM spin-flip amplitude for protons is responsible for the proton's anomalous magnetic moment, and is large. This then generates a significant analyzing power for small angle elastic scattering. RHIC polarimetry has reached a 5% uncertainty on the beam polarization, and seem capable of reducing this uncertainty further. Polarized neutron beams ax also interesting for RHIC and for a polarized electron-polarized proton/ion collider in the fume. In this case, deuterons, for example, have a very small anomalous magnetic moment, making the approach used for protons impractical. Although it might be possible to use quasielastic scattering from the protons in the deuteron to monitor the polarization. 3-He beams can provide polarized neutrons, and do have a large anomalous magnetic moment, making a similar approach to proton polarimetry possible.

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  • X11TH INTERNATIONAL WORKSHOP ON POLARIZED SOURCES, TARGETS AND POLARIMETRY (PSTP07); BROOKHAVEN NATIONAL LABORATORY, NY ; 20070910 through 20070914

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  • Report No.: BNL--79729-2007-CP
  • Grant Number: DE-AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 922242
  • Archival Resource Key: ark:/67531/metadc899137

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  • September 10, 2007

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 1, 2016, 4:57 p.m.

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BUNCE,G. HIGH ENERGY HADRON POLARIMETRY., article, September 10, 2007; United States. (digital.library.unt.edu/ark:/67531/metadc899137/: accessed May 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.