HAL : in2p3-00023910, version 1
 arXiv : hep-ph/0503182
 Nato Worskhop on Radiation by Relativistic Electrons in Periodic Structures, Nor-Hamberd : Arménie
 Impact parameter profile of synchrotron radiation
 (2006)
 The horizontal impact parameter profile of synchrotron radiation, for fixed vertical angle of the photon, is calculated. This profile is observed through an astigmatic optical system, horizontally focused on the electron trajectory and vertically focused at infinity. It is the product of the usual angular distribution of synchrotron radiation, which depends on the vertical angle $\psi$, and the profile function of a caustic staying at distance $\bcl = (\gamma^{-2} + \psi^2) \RB/2$ from the orbit circle, $\RB$ being the bending radius and $\gamma$ the Lorentz factor. The {\it classical impact parameter} $\bcl$ is connected to the Schott term of radiation damping theory. The caustic profile function is an Airy function squared. Its fast oscillations allow a precise determination of the horizontal beam width.
 équipe(s) de recherche : théorie
 Thème(s) : Physique/Physique des Hautes Energies - PhénoménologiePhysique/Physique/Physique des accélérateurs
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 in2p3-00023910, version 1 http://hal.in2p3.fr/in2p3-00023910 oai:hal.in2p3.fr:in2p3-00023910 Contributeur : Sylvie Florès <> Soumis le : Vendredi 18 Mars 2005, 12:30:04 Dernière modification le : Mercredi 21 Décembre 2005, 11:29:33