Beam Steering and Radiation Generation of Electrons in Bent Crystals in the Sub-GeV Domain

Fuente: arXiv
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Autori principali: Negrello, R., Romagnoni, M., Sytov, A., Canale, N., De Salvador, D., Fedeli, P., Guidi, V., Haurylavets, V. V., Klag, P., Lauth, W., Malagutti, L., Mazzolari, A., Paternò, G., Sgarbossa, F., Soldani, M., Tikhomirov, V. V., Valzani, D., Bandiera, L.
Natura: Preprint
Pubblicazione: 2025
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author Negrello, R.
Romagnoni, M.
Sytov, A.
Canale, N.
De Salvador, D.
Fedeli, P.
Guidi, V.
Haurylavets, V. V.
Klag, P.
Lauth, W.
Malagutti, L.
Mazzolari, A.
Paternò, G.
Sgarbossa, F.
Soldani, M.
Tikhomirov, V. V.
Valzani, D.
Bandiera, L.
author_facet Negrello, R.
Romagnoni, M.
Sytov, A.
Canale, N.
De Salvador, D.
Fedeli, P.
Guidi, V.
Haurylavets, V. V.
Klag, P.
Lauth, W.
Malagutti, L.
Mazzolari, A.
Paternò, G.
Sgarbossa, F.
Soldani, M.
Tikhomirov, V. V.
Valzani, D.
Bandiera, L.
contents We present an investigation into beam steering and radiation emission by sub-GeV electrons traversing bent silicon crystals. Using 855, 600, and 300~MeV electron beams at the Mainz Microtron (MAMI), we explored orientational coherent effects and particle dynamics in a 15~$μ$m-thick crystal bent along the (111) planes. Combined experimental and simulation analyses enabled the classification and quantitative assessment of the contributions from channeling, dechanneling, rechanneling, and volume capture to both beam deflection and radiation emission. Crystal steering remained effective even at 300~MeV, with measured channeling efficiencies exceeding 50\%, a record at such low energy. Channeling and volume reflection enhanced radiation emission by up to a factor of six compared to the misaligned orientation, highlighting strong orientational coherence effects in the sub-GeV regime. These findings confirm the feasibility of using bent crystals for efficient beam manipulation and high-intensity photon generation at low energies, supporting the development of novel light sources and beam control strategies at accelerator facilities operating in this energy range.
format Preprint
id arxiv_https___arxiv_org_abs_2511_19807
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Beam Steering and Radiation Generation of Electrons in Bent Crystals in the Sub-GeV Domain
Negrello, R.
Romagnoni, M.
Sytov, A.
Canale, N.
De Salvador, D.
Fedeli, P.
Guidi, V.
Haurylavets, V. V.
Klag, P.
Lauth, W.
Malagutti, L.
Mazzolari, A.
Paternò, G.
Sgarbossa, F.
Soldani, M.
Tikhomirov, V. V.
Valzani, D.
Bandiera, L.
Accelerator Physics
High Energy Physics - Experiment
We present an investigation into beam steering and radiation emission by sub-GeV electrons traversing bent silicon crystals. Using 855, 600, and 300~MeV electron beams at the Mainz Microtron (MAMI), we explored orientational coherent effects and particle dynamics in a 15~$μ$m-thick crystal bent along the (111) planes. Combined experimental and simulation analyses enabled the classification and quantitative assessment of the contributions from channeling, dechanneling, rechanneling, and volume capture to both beam deflection and radiation emission. Crystal steering remained effective even at 300~MeV, with measured channeling efficiencies exceeding 50\%, a record at such low energy. Channeling and volume reflection enhanced radiation emission by up to a factor of six compared to the misaligned orientation, highlighting strong orientational coherence effects in the sub-GeV regime. These findings confirm the feasibility of using bent crystals for efficient beam manipulation and high-intensity photon generation at low energies, supporting the development of novel light sources and beam control strategies at accelerator facilities operating in this energy range.
title Beam Steering and Radiation Generation of Electrons in Bent Crystals in the Sub-GeV Domain
topic Accelerator Physics
High Energy Physics - Experiment
url https://arxiv.org/abs/2511.19807