IPAC2012 - List of Authors (Kniaziev, R.R.)

Paper	Title	Page
WEPPP003	Focusing of Accelerated Particles by Wakefields of a Drive Bunch in a Plasma-dielectric Waveguide	2723
	G.V. Sotnikov, R.R. Kniaziev NSC/KIPT, Kharkov, Ukraine
	Funding: The research is supported in part by the Science and Technology Center in Ukraine (STCU), project No. P522. One of wakefield acceleration methods as a slowing medium uses the plasma of a capillary discharge. The capillary tube is a slowing medium, therefore at propagation in it of a laser pulse or relativistic electron bunches (REB) along with plasma wakefields will be excited an eigen waves of dielectric structure. So far influence of electrodynamic properties of capillary tube material on plasma wakefields is not investigated. On an example of a cylindrical waveguide of gigahertz operation frequency range, we investigate excitation of wakefields by REB in a dielectric waveguide (DW) with the accelerating channel filled with isotropic plasma. The excited field consists of Langmuir wave fields (LW) and fields of eigen waves of DW. At certain plasma density a longitudinal electric field of LW it is significantly less than the similar of DW waves , and transverse components of the LW field are significantly higher than transverse component of DW waves. The periods of these two types of waves generally do not coincide. The range of plasma densities which provides a simultaneous acceleration and focusing of test bunch by LW is found. Steinhauer L.C., Kimura W.D. Phys. Rev. STAB. V.9, 081301 (2006).

Paper

Title

Page

Focusing of Accelerated Particles by Wakefields of a Drive Bunch in a Plasma-dielectric Waveguide

2723

G.V. Sotnikov, R.R. Kniaziev
NSC/KIPT, Kharkov, Ukraine

Funding: The research is supported in part by the Science and Technology Center in Ukraine (STCU), project No. P522.
One of wakefield acceleration methods as a slowing medium uses the plasma of a capillary discharge*. The capillary tube is a slowing medium, therefore at propagation in it of a laser pulse or relativistic electron bunches (REB) along with plasma wakefields will be excited an eigen waves of dielectric structure. So far influence of electrodynamic properties of capillary tube material on plasma wakefields is not investigated. On an example of a cylindrical waveguide of gigahertz operation frequency range, we investigate excitation of wakefields by REB in a dielectric waveguide (DW) with the accelerating channel filled with isotropic plasma. The excited field consists of Langmuir wave fields (LW) and fields of eigen waves of DW. At certain plasma density a longitudinal electric field of LW it is significantly less than the similar of DW waves , and transverse components of the LW field are significantly higher than transverse component of DW waves. The periods of these two types of waves generally do not coincide. The range of plasma densities which provides a simultaneous acceleration and focusing of test bunch by LW is found.
* Steinhauer L.C., Kimura W.D. Phys. Rev. STAB. V.9, 081301 (2006).