Radiation from Relativistic Electrons in Periodic Structures "RREPS-19"

Session

Diffraction Radiation and Smith-Purcell Radiation

5

16 Sept 2019, 16:30

90. Smith-Purcell Radiation from Active Gratings

Alexey Tishchenko (National Research Nuclear University (MEPhI))

16/09/2019, 16:30

Diffraction radiation and Smith-Purcell radiation

Oral

We propose the idea to drive Smith-Purcell effect by changing properties of the elements a diffraction grating consists of. The control of elements composing a diffraction grating is the idea that has already been realised in the active phase gratings, which are, e.g., integral part of modern avionics. In terms of fundamental research such gratings today are very actively investigated in the...

88. Diffraction Radiation Generation by the Internal Target of the Cyclic Accelerator

Uglov Sergey (Tomsk Polytechnic University)

16/09/2019, 16:50

Diffraction radiation and Smith-Purcell radiation

Oral

The observation and study of the properties of the diffraction radiation (DR) of relativistic electrons in the ultra-soft X-ray region ($E_{ph} \sim 100 eV$) have troubles with the usage of the extracted charge particle beam because it is necessary to establish the very small impact parameter $b\sim \gamma\lambda/2$ in the experiment. Here $b$ is the distance from the particle trajectory to...

92. Pre-bunched Relativistic Electron Beam Focusing by Dielectric Capillary

Kristina Vokhmyanina (BelSU)

16/09/2019, 17:10

Diffraction radiation and Smith-Purcell radiation

Oral

To date, large variety of a passive dielectric deflectors have been tested with keV electron beam for potential usage in the field of applied biology and medicine. However, there is an attraction to implement the same techniques for deflection and focusing of a low-emittance relativistic pre-bunched electron beam of a modern compact linear accelerator. To verify this possibility we have made...

65. Generation of Monochromatic Radiation from a Multilayer Prismatic Target

Mikhail Shevelev (KEK)

16/09/2019, 17:30

Diffraction radiation and Smith-Purcell radiation

Oral

In this report, we show the experimental results of angular distribution and spectrum of radiation produced by a multilayer prismatic target, consisting of metallic foils separated by vacuum/air gaps when an electron beam moving near target. Experiment was carried out at TPU microtron, where the 6 MeV electron beam consists of electron bunches with a repetition rate 2.63 GHz determined by RF...

57. Focusing of Drive and Witness Bunches in Dielectric Waveguide Filled With Inhomogeneous Plasma

Prof. Gennadij Sotnikov (NSC Kharkov Institute of Physics and Technology)

16/09/2019, 17:50

Diffraction radiation and Smith-Purcell radiation

Oral

Here we report the results of PIC numerical simulation of focusing of witness and drive bunches in dielectric waveguide filled with radially inhomogeneous plasma. Wakefield was excited by electron bunch in quartz (permittivity is 3.8) dielectric tube with outer and inner diameters of 1.2 mm and 1.0 mm, respectively, inserted in cylindrical metal waveguide. Energy of drive bunch electrons was...