Channeling 2023

Session

S2: Radiation: Generation & Interaction

6 Jun 2023, 11:10

Hotel Corallo, Riccione

Conveners

S2: Radiation: Generation & Interaction: Session 2.2

• Giovanni Mazzitelli (Istituto Nazionale di Fisica Nucleare)

55. From Bremsstrahlung to Channeling Radiation. A Promising Way for Positron Generation

Robert Chehab

06/06/2023, 11:10

invited

Crystal effects and especially channeling radiation are interesting, instead of bremsstrahlung, to provide a large number of photons,for positron generation in converters This work is describing the choice , more and more, spread , of axially oriented crystals in channeling conditions to provide such amount of photons . Emphasis is put on a particular scheme, the hybrid source, associating a...

51. ADVANTAGES OF HYBRID POSITRON SOURCES WITH GRANULAR CONVERTERS

Robert CHEHAB

06/06/2023, 11:40

oral

Hybrid positron sources using a crystal axially oriented as a photon radiator followed by an amorphous converter are promising for the yields as for the behaviour with thermal stresses. Emphasis is put on the advantages of using a granular converter made of small spheres instead of a bulk material for the photon conversion into e+e- pairs.

61. Experimental Demonstration of Super-radiant Emission of Coherent Cherenkov Diffraction Radiation

Pavel Karataev

06/06/2023, 12:00

oral

Recent years have witnessed an intense development of accelerator-based sources generating radiation from radiowaves to hard X-rays. Intense electromagnetic radiation in the far‐infrared spectral range is an advanced tool for scientific research in biology, chemistry, and material science because many materials leave signatures in the radiation spectrum. Monochromatic lines in the spectrum...

11. Radiation of Surface Polaritons in Cylindrical Channels

Vardazar Kotanjyan

06/06/2023, 12:20

oral

We investigate the radiation of surface polaritons by a charged particle
moving parallel to the axis of a dielectric cylinder immersed in homogeneous
medium. Both the cases of the charge motion inside and outside the
cylinder are discussed. The electromagnetic fields in the exterior
and interior media are evaluated by using the Green tensor. The parts
in the fields corresponding to...

65. PYROELECTRIC ELECTRON BEAM DEFLECTOR AND UNDULATOR

Alexander Shchagin

06/06/2023, 12:40

oral

A.V. Shchagin

Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
Kharkov Institute of Physics and Technology, Academicheskaya 1, Kharkiv 61108, Ukraine

e-mail: alexander.shchagin@desy.de

Deflection of a relativistic electron beam by means of the pyroelectric deflector is demonstrated experimentally for the first time [1]. The operating principle of the...