Speaker
Mr
Giacomo Germogli
(University of Ferrara and INFN section of Ferrara (Italy))
Description
Electromagnetic radiation emitted by channeled and volume reflected sub-GeV electrons in a bent crystal was measured at MAMI (Germany). A 855 MeV electron beam hit a mechanically bent 30.5 μm thick Si crystal. Crystallographic directions and holder design are optimized to excite quasi-mosaic effect of the (111) planes, while thickness was reduced down to the order of the dechanneling length (15-20 μm) [1]. Electromagnetic radiation emitted was more intense than for the amorphous case both for channeling and volume reflection. In addition, intensity of radiation accompanying volume reflection is maintained high in the whole angular acceptance, which is equal to the bending angle of the crystal [2]. Radiation accompanying coherent interactions at this energy is of special interest for the realization of an innovative intense source of X-ray via channeling in a periodically bent crystal. Experimental results on dynamics and on radiation generation were critically compared to Monte Carlo simulations.
References
1. A. Mazzolari et al., Phys. Rev. Lett. 112 (2014) 135503.
2. L. Bandiera et al., Phys. Rev. Lett. 115, (2015) 025504.
Author
Mr
Giacomo Germogli
(University of Ferrara and INFN section of Ferrara (Italy))
Co-authors
Dr
Alessandro Berra
(University of Insubria and INFN section of Milano-Bicocca (Italy))
Mr
Alexei Sytov
(University of Ferrara and INFN section of Ferrara (Italy), Research Institute for Nuclear Problems, Belarusian State University, Minsk (Belarus))
Dr
Andrea Mazzolari
(University of Ferrara and INFN section of Ferrara (Italy))
Dr
Daniela Lietti
(University of Insubria (Italy))
Davide De Salvador
(University of Padova and INFN Laboratori Nazionali di Legnaro (Italy))
Dr
Enrico Bagli
(INFN section of Ferrara (Italy))
Erik Vallazza
(INFN Section of Trieste)
Prof.
Hartmut Backe
(Institut fur Kernphysik der Universität at Mainz (Germany))
Dr
Laura Bandiera
(INFN section of Ferrara (Italy))
Michela Prest
(University of Insubria and INFN section of Milano-Bicocca (Italy))
Victor Tikhomirov
(Research Institute for Nuclear Problems, Belarusian State University, Minsk (Belarus))
Prof.
Vincenzo Guidi
(University of Ferrara and INFN section of Ferrara (Italy))
Prof.
Werner Lauth
(Institut fur Kernphysik der Universität at Mainz (Germany))
