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arXiv · 2401.03886

Radiation in oriented crystals: Innovative application to future positron sources

Mattia Soldani·Fahad Alharthi·Laura Bandiera·Nicola Canale·Gianluca Cavoto·Iryna Chaikovska·Robert Chehab·Vincenzo Guidi·Viktar Haurylavets·Andrea Mazzolari·Riccardo Negrello·Gianfranco Paternò·Marco Romagnoni·Alexei Sytov·Victor Tikhomirov
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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.

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Mattia Soldani, Fahad Alharthi, Laura Bandiera, Nicola Canale, Gianluca Cavoto, Iryna Chaikovska, Robert Chehab, Vincenzo Guidi, Viktar Haurylavets, Andrea Mazzolari, Riccardo Negrello, Gianfranco Paternò, Marco Romagnoni, Alexei Sytov, Victor Tikhomirov. 2024-01-08. Radiation in oriented crystals: Innovative application to future positron sources. https://doi.org/10.1016/j.nima.2023.168828

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