Conveners
2. Transition Radiation
- Xavier Artru (CNRS)
2. Transition Radiation: (continue)
- Xavier Artru (CNRS)
Yasushi Hayakawa
(Nihon University)
08/09/2015, 15:00
2. Transition Radiation
Invited
The new project of a THz-wave light source is in progress at the parametric X-ray (PXR) beamline of the Laboratory for Electron Beam Research and Application (LEBRA) in Nihon University. The THz-wave source is based on coherent transition radiation (CTR) emitted from a metal foil inserted downstream of a crystal target that is the radiator of PXR. A beryllium foil is the most prospect...
Pavel Karataev
(Royal Holloway, University of London)
08/09/2015, 15:30
2. Transition Radiation
Invited
Transverse beam size and emittance monitoring is a crucial task in future linear colliders. Beam diagnostics is required at all stages of the beam production, acceleration and delivery. The diagnostics equipment has to be suitable for electron/positron beams form MeV to TeV energies with resolution form nanometres to hundreds of microns and beam intensities from a fraction to hundreds of nC....
Leonid Sukhikh
(Tomsk Polytechnic University)
08/09/2015, 16:00
2. Transition Radiation
Oral
Transverse beam profile diagnostics in electron accelerators is usually based on direct imaging of a beam spot via visible radiation (transition or synchrotron radiation). In this case, the fundamental resolution limit is determined by radiation diffraction in the optical system. A method to achieve a resolution beyond the diffraction limit is to perform point spread function (PSF) dominated...
Leonid Sukhikh
(Tomsk Polytechnic University)
08/09/2015, 16:15
2. Transition Radiation
Oral
Transverse beam profile diagnostics in the case of micron-scale beam sizes from modern electron accelerators is a challenging task. Backward transition radiation (BTR) imaging in the visible spectral region is usually applied but it is close to the diffraction limit, i.e. the measured beam image is dominated by the point-spread function (PSF) [1,2]. In order to improve the resolution and to...
Michele Bergamaschi
(CERN)
08/09/2015, 16:30
2. Transition Radiation
Oral
Optical Diffraction Radiation (ODR) is a promising non-destructive transverse beam size diagnostics for future high intensity accelerators. The ODR signal is much less intense than that from the well-known Optical Transition Radiation (OTR), so synchrotron radiation and wake-fields can interfere with the signal, complicating the data analysis. The insertion of a mask upstream of the target...
Sergey Uglov
(Tomsk Polytechnic University)
08/09/2015, 17:00
2. Transition Radiation
Oral
In a number of studies [1-4] it has been theoretically and experimentally shown that at the interaction of a relativistic electron with a periodic structure, a quasimonochromatic component of X-rays is generated in the direction of the Bragg diffraction.
The mechanism of this radiation is similar to the parametric X-ray radiation of relativistic charged particles in crystals. This report...
Tatiana Alekhina
(Saint- Petersburg State University)
08/09/2015, 17:15
2. Transition Radiation
Oral
Electromagnetic field of a charge that uniformly moves in a circular waveguide with a semi-infinite dielectric possessing frequency dispersion of a resonant type is under consideration. This problem is a generalization of the case of a nondispersive dielectric (considered earlier). The study can be interesting for development of new methods of generation of electromagnetic radiation and...
Mr
Hayk Gevorgyan
(Yerevan State University)
08/09/2015, 17:30
2. Transition Radiation
Oral
It is given a brief review of the theory of the stimulated coherent X-ray transition radiation produced in a RTR stack of plates (StRTR) under the influence of accompanying intense monochromatic beams by micro bunched electrons. Though there are tens of publications on the corresponding gain of the amplification of the primary X-ray photons by StRTR, nevertheless, the absence of some...
