A Polarized Target for the CLAS detector

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We describe the design, construction, and performance of a polarized solid target for use in electron scattering experiments with the CEBAF Large Acceptance Spectrometer (CLAS). Protons and deuterons are continuously polarized by microwave-induced spin flip transitions at 1 K and 5 T. The target operated successfully during two cycles in 1998 and 2000, providing proton and deuteron polarizations as high as 96% and 46%, respectively. The unique features of the target which permit its use inside a 4pi spectrometer are stressed. Comparison is made between the target polarization measured by the traditional method of NMR and by electron elastic scattering.

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906 Kilobytes pages

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Keith, C.D.; Anghinolfi, M.; Battaglieri, M.; Branford, D.; Bultmann, S.; Burkert, V.D. et al. September 1, 2002.

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We describe the design, construction, and performance of a polarized solid target for use in electron scattering experiments with the CEBAF Large Acceptance Spectrometer (CLAS). Protons and deuterons are continuously polarized by microwave-induced spin flip transitions at 1 K and 5 T. The target operated successfully during two cycles in 1998 and 2000, providing proton and deuteron polarizations as high as 96% and 46%, respectively. The unique features of the target which permit its use inside a 4pi spectrometer are stressed. Comparison is made between the target polarization measured by the traditional method of NMR and by electron elastic scattering.

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906 Kilobytes pages

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  • Report No.: JLAB-PHY-02-33
  • Report No.: DOE/ER/40150-2229
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 801753
  • Archival Resource Key: ark:/67531/metadc735128

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  • September 1, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 8:26 p.m.

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Keith, C.D.; Anghinolfi, M.; Battaglieri, M.; Branford, D.; Bultmann, S.; Burkert, V.D. et al. A Polarized Target for the CLAS detector, article, September 1, 2002; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc735128/: accessed December 11, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.