Short-period crystalline undulators have the potential to enable intense and monochromatic sources of hard X and γ radiation. Three crystalline undulators were manufactured and their structural properties were characterized at the ESRF X-ray light source. In particular, a crystalline undulator consists in a periodically bent crystal in which channeled electrons or positrons follow the bending of the crystalline planes, thus generating electromagnetic radiation in analogy with standard magnetic undulators. State-of-the-art magnetic undulators can be built with a period of no less than a few cm. On the other hand, a crystalline undulator could be built with a period down to the sub-mm range. Thus, a crystalline undulator would allow generating harder photons. Since the radiator consists of a small crystal, a crystalline undulator is a valid and low-cost alternative for intense hard radiation production at electron accelerator facilities. The three samples were realized at the INFN laboratory of Ferrara, Italy, through the grooving method, namely a method developed to induce a self-standing and adjustable deformation to a crystal. The samples showed a uniform and sinusoidal curvature, thus proving that the grooving method is suitable for building crystalline undulators.

Silicon crystalline undulator prototypes: Manufacturing and X-ray characterization

Camattari R.
;
Bandiera L.;Romagnoni M.;Bagli E.;Germogli G.;Sytov A.;Maiolino T.;Tamisari M.;Mazzolari A.;Guidi V.
Penultimo
;
2019

Abstract

Short-period crystalline undulators have the potential to enable intense and monochromatic sources of hard X and γ radiation. Three crystalline undulators were manufactured and their structural properties were characterized at the ESRF X-ray light source. In particular, a crystalline undulator consists in a periodically bent crystal in which channeled electrons or positrons follow the bending of the crystalline planes, thus generating electromagnetic radiation in analogy with standard magnetic undulators. State-of-the-art magnetic undulators can be built with a period of no less than a few cm. On the other hand, a crystalline undulator could be built with a period down to the sub-mm range. Thus, a crystalline undulator would allow generating harder photons. Since the radiator consists of a small crystal, a crystalline undulator is a valid and low-cost alternative for intense hard radiation production at electron accelerator facilities. The three samples were realized at the INFN laboratory of Ferrara, Italy, through the grooving method, namely a method developed to induce a self-standing and adjustable deformation to a crystal. The samples showed a uniform and sinusoidal curvature, thus proving that the grooving method is suitable for building crystalline undulators.
2019
Camattari, R.; Bandiera, L.; Tikhomirov, V.; Romagnoni, M.; Bagli, E.; Germogli, G.; Sytov, A.; Maiolino, T.; Tamisari, M.; Mazzolari, A.; Guidi, V.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/2415525
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