Conveners
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation: Day 1
- Pavel Karataev (Royal Holloway, University of London)
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation: Day 1 (continue)
- Pavel Karataev (Royal Holloway, University of London)
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation: (day 2)
- Andrey Tyukhtin (Saint Petersburg State University)
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation: (day 2 contnue)
- Andrey Tyukhtin (Saint Petersburg State University)
32.
Twisted Photons and Electrons as a New Tool in Physics of Atoms, Nuclei and Elementary Particles
Prof.
Valeriy Serbo
(Novosibirsk State University)
07/09/2015, 10:20
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
In modern optics there are well known states of the laser beam whose
photons have a nonzero value of the orbital angular momentum projection on
the beam propagation axis. Very recently new experiments had been
performed in which the twisted photons with the energy of two orders of
magnitude larger and smaller had been produced. Moreover, several groups
have reported successful creation of...
Gero Kube
(DESY, Hamburg, Germany)
07/09/2015, 10:50
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
Radiation generated by high-energy particle beams is widely used for
beam diagnostic purposes. Depending on the mechanism of radiation
generation, the emitted wavelength range extends from the THz up to the
X-ray region, thus allowing to measure beam profiles in the longitudinal
and the transverse plane over a wide range. In this talk, basic
considerations for radiation based profile...
Andrey Tyukhtin
(Saint Petersburg State University)
07/09/2015, 11:40
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
We present analytical and numerical investigation of nontraditional methods for obtaining concentrated radiation from particle bunches. The objects considered here are simultaneously "generators" and "concentrators" of radiation. First, we consider dielectric objects which can concentrate radiation near some line or some point. The form of the targets is determined using the ray optics, but...
Viktor Vorobev
(Saint Petersburg State University)
07/09/2015, 12:10
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Three-dimensional and planar periodic structures made of thin conductors and having small period can be used for non-destructive diagnostics of charged particle bunches. Earlier we analysed radiation from bunches moving in volume wire metamaterial and along the boundary of such material. We also studied radiation of bunches moving in the presence of infinite planar structures. Now we consider...
Micola Bondarenco
(NSC Kharkov Institute of Physics and Technology, Ukraine)
07/09/2015, 12:25
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Evaluation of the angular distribution function of multiple Coulomb scattering is improved by deforming the integration contour in the Fourier integral representation into the complex plane of impact parameters. That allows to express the distribution function as a sum of two positive components, hard and soft. The soft component is close to a Gaussian, whereas the hard component incorporates...
Valeriy Katkov
(BINP, Novosibirsk, 630090)
07/09/2015, 12:40
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
In this work, a constant and uniform magnetic field is less than the Schwinger critical value. In turn, an additional constant and uniform electric field is taken much smaller than the magnetic field value. The propagation of a photon in this electromagnetic field is investi-gating. In particular, in the presence of a weak electric field, the root divergence is absent in the photon...
Sergey Galyamin
(Saint Petersburg State University)
07/09/2015, 12:55
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Electromagnetic radiation with terahertz frequencies (0.1-10 THz) is supposed to be a promising tool for a number of applications. Efficient terahertz emission can be achieved, for example, using the beam-driven dielectric loaded structures [1]. Under certain approximations, the problem of transformation of a single TM mode with a high number at the open end of a cylindrical waveguide with a...
Alexei Kanareykin
(St.Petersburg Electrotechnical University "LETI", Russia; Euclid Techlabs LLC,USA)
10/09/2015, 10:00
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
Cherenkov radiation from particle bunches is of considerable importance in many areas of fundamental and applied physics. Recent experiments has demonstrated that proper adjustment of the electron beam parameters to the guiding structure geometry scaled from sub millimeter dielectric waveguides to nanoscale periodic structures allows to generate radiation, ranging from low terahertz to...
Nobuhiro Terunuma
(High Energy Accelerator Research Organization (KEK), Tsukuba, Japan)
10/09/2015, 10:30
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
We have been developing a high brightness X-ray source based on the Inverse Compton scattering (ICS) between an electron beam and a laser pulse stacked in an optical cavity. The X-ray which energy is in the order of 10 keV, have a wide variety of application for material, biological and medical researches. The synchrotron light sources as the several GeV electron ring have been contributing to...
16.
Intense laser focused profile measurement by scanning electron beam via laser-Compton scattering
Prof.
Masakazu Washio
(Waseda University)
10/09/2015, 11:00
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Laser-Compton scattering (LCS) is a feasible technique to realize the compact, high brightness X-ray source. The laser photons are scattered by high energy electrons and the energy of the electrons is transferred to the photons. Tightly focus of both laser and electron beam makes it possible to achieve the high brightness X-ray source. The LCS is also a quite useful technique for diagnostics....
Dr
Alexey Dik
(LPI RAS)
10/09/2015, 11:15
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Channeling effect in crystals is a very convenient method for charged particle bunches manipulation. In particular, this phenomena can be used for charged particle beams shaping, collimation and extraction. As known, considerable radiation energy losses of channeled particles (due to channeling radiation) can be used as a novel method of beam cooling. However, during such interaction of...
Alexander Potylitsyn
(Tomsk Polytechnic University)
10/09/2015, 11:30
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
The Thomson scattering of laser photons by a relativistic electron can be considered as radiation in a “light undulator”. Classical formulas describing characteristics of the conventional undulator radiation (UR) are applicable for the radiation in a “light undulator” if it is possible to neglect by recoil effect.
In the opposite case the discrete quantum processes of photon emission ...
Mr
Evgenii Frolov
(P.N. Lebedev Physical Institute of the Russian Academy of Sciences)
10/09/2015, 11:45
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Periodic field structure in the region of two intense laser beams overlapping is capable of trapping charged particles in channeling regime. This phenomenon is called channeling in a lasers field and attracts growing attention of researchers today. The reason for this is the ability to recreate channeling-like conditions in vacuum avoiding particles-matter interaction and decreasing influence...
Xavier Artru
(Université de Lyon, Institut de Physique Nucléaire de Lyon, Université Lyon-I, CNRS/IN2P3, France)
10/09/2015, 12:30
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Invited
Two phenomena relating light channeled in optical fibers and radiation by moving particles are considered: the first one is light induced by a charged particle in optical fibers (PIGL). We review the basic mechanism, the intensity formula, the spectral and polarization properties and the possible application to beam diagnostic. The second one is a similarity between synchrotron radiation and...
Vitold Bleko
(National Research Tomsk Polytechnic University)
10/09/2015, 13:00
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
Dielectric fibers are widely used in technique for light transport. The ability to use a radiation of relativistic electrons in optical fibers in beam diagnostics was proposed recently [Tikhoplav R *et. al. IPAC’12 Conf. Proc.* 996]. The authors propose a method of measuring the transverse profile of electron beams using a fiber optic array. When an electron propagation through the core of a...
Ms
Veronika Soboleva
(Tomsk Polytechnic University)
10/09/2015, 13:15
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
We present in this work the experimental investigation of the interaction of relativistic electron field with wire metamaterial. The measurements of the spectral-angular characteristics of coherent radiation were done in millimeter wavelength region (10-40 mm) in far-field zone on relativistic electron beam with energy of 6.2 MeV. Used target represent the right triangular prism that consist...
Sergey Uglov
(Tomsk Polytechnic University)
10/09/2015, 13:30
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
According to theoretical estimates (e.g., [1]), due to a jump of the dielectric permittivity of Al near the L edge of photon absorption (Е = 72.6 eV) the Cherenkov radiation (CR) must be observed at the angles $\theta = 10^o–15^o$ relative to the electron path. This report presents the results of experimental study of the angular density of extreme ultraviolet (EUV) radiation generated by 5.7...
Anna Kotanjyan
(Yerevan State University)
10/09/2015, 13:45
1. General Aspects of Physical Phenomena and Processes Associated with Electromagnetic Radiation
Oral
As an application of general results of the radiation for a charge moving around a dielectric cylinder along a helical trajectory the projection of which on the plane perpendicular to the cylinder axis is an arbitrary closed curve, we study the radiation intensity of the transversal oscillation of rotating charged particle. We analyse the influence of the trajectory shift from the circular one...
