It has been known since decades that the alignment of a beam of high-energy electrons with particular crystal directions involves a significant increase of bremsstrahlung radiation emission. This enhancement lies at the conceptual foundation of innovative positron source schemes for future lepton colliders. In particular, the so-called hybrid scheme makes use of a heavy-metal radiator in crystalline form, which is then followed by an amorphous metallic converter for positron generation from electrons by means of a two-step electromagnetic process. This work presents the most recent simulation results obtained on the development of a hybrid positron source for the FCC-ee from the standpoint of the features of both the crystalline radiator and the amorphous converter.
Radiation in oriented crystals: Innovative application to future positron sources
Soldani, Mattia;Bandiera, Laura;Canale, Nicola;Cavoto, Gianluca;Guidi, Vincenzo;Mazzolari, Andrea;Negrello, Riccardo;Paternò, Gianfranco;Romagnoni, Marco;Sytov, Alexei;
2024
Abstract
It has been known since decades that the alignment of a beam of high-energy electrons with particular crystal directions involves a significant increase of bremsstrahlung radiation emission. This enhancement lies at the conceptual foundation of innovative positron source schemes for future lepton colliders. In particular, the so-called hybrid scheme makes use of a heavy-metal radiator in crystalline form, which is then followed by an amorphous metallic converter for positron generation from electrons by means of a two-step electromagnetic process. This work presents the most recent simulation results obtained on the development of a hybrid positron source for the FCC-ee from the standpoint of the features of both the crystalline radiator and the amorphous converter.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
