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TY - CONF AU - Kurakin, V.G. AU - Kurakin, P.V. ED - Kuzin, Maxim ED - Schaa, Volker RW TI - Charged Beams Optical Properties of Scattering Media J2 - Proc. of RuPAC2016, St. Petersburg, Russia, November 21-25, 2016 C1 - St. Petersburg, Russia T2 - Russian Particle Accelerator Conference T3 - 25 LA - english AB - In some accelerator based applications scattering media are placed on beam path. It may be internal beam target, dielectric film or metallic foil to separate volumes with different gas pressure during beam extraction from accelerator, roughing target in charge changing injection in circular accelerator and storage ring and so on. In particular cases detailed knowledge of beam dynamics in scattering media is necessary. This is especially true, for example, in the case of recovery energy accelerator where accelerated in superconducting linac high energy electron beam is directed again to accelerator after interaction with target. Distribution function for scattering angle and transverse displacement is used to derive the phase-plane portrait transformation in scattering medium for incoming charged particle beam. The phase-plane portrait of scattered beam depends strongly on incoming beam ellipse proportions and orientation, and simple matching conditions and expression has been derived. It is shown as well that in heterogeneous medium incident beam experiences trajectory refraction at the out coming medium border. Refraction factor has been calculated for an off-normal incidence of a beam. It is worth to note that refractive property of scattering media may for used for beam focusing. PB - JACoW CP - Geneva, Switzerland SP - 521 EP - 523 KW - scattering KW - target KW - emittance KW - interface KW - optics DA - 2017/02 PY - 2017 SN - 978-3-95450-181-6 DO - 10.18429/JACoW-RuPAC2016-WEPSB071 UR - http://jacow.org/rupac2016/papers/wepsb071.pdf ER -