A Pair Polarimeter for Linearly Polarized High Energy Photons

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Electron-positron pair production, the main process for high energy photon interaction with matter, has a large analyzing power for linear polarized photons. Our calculations show that in the GeV energy range a compact polarimeter based on silicon micro-strip detectors is feasible. We calculated the cross section as a function of the angle between the polarization plane and the line between positron and electron positions in the detector. For a thin radiator and equal energies of the positron and electron, the ratio sigma{parallel}/sigma{perpendicular} is about 1.6. At a beam intensity of 10{sup 6} photons per second a polarization measurement with a ... continued below

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Wojtsekhowski, Bogdan; Tedeschi, D. & Vlahovic, B. October 1, 2002.

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Electron-positron pair production, the main process for high energy photon interaction with matter, has a large analyzing power for linear polarized photons. Our calculations show that in the GeV energy range a compact polarimeter based on silicon micro-strip detectors is feasible. We calculated the cross section as a function of the angle between the polarization plane and the line between positron and electron positions in the detector. For a thin radiator and equal energies of the positron and electron, the ratio sigma{parallel}/sigma{perpendicular} is about 1.6. At a beam intensity of 10{sup 6} photons per second a polarization measurement with a 1% statistical accuracy will require less than one hour of data taking.

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488 Kilobytes pages

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  • Report No.: JLAB-PHY-02-38
  • Report No.: DOE/ER/40150-2289
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 803299
  • Archival Resource Key: ark:/67531/metadc739164

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  • October 1, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • Feb. 5, 2016, 9:49 p.m.

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Wojtsekhowski, Bogdan; Tedeschi, D. & Vlahovic, B. A Pair Polarimeter for Linearly Polarized High Energy Photons, article, October 1, 2002; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc739164/: accessed August 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.