Silicon crystalline undulator prototypes: Manufacturing and x-ray characterization
| Autor: | G. Cavoto, Vincenzo Guidi, G. Germogli, Enrico Bagli, Laura Bandiera, V.V. Tikhomirov, Tais Maiolino, A. Mazzolari, M. Romagnoni, M. Tamisari, Riccardo Camattari, A. Sytov |
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| Rok vydání: | 2019 |
| Předmět: |
Nuclear and High Energy Physics
Photon Materials science Physics and Astronomy (miscellaneous) Hard radiation Electron Radiation 01 natural sciences Electromagnetic radiation NO law.invention Crystal Optics law 0103 physical sciences 010306 general physics undulator channeling radiation sources 010308 nuclear & particles physics business.industry Particle accelerator Surfaces and Interfaces Undulator photon emission bent crystals radiation energy photon emission radiation Physics::Accelerator Physics bent crystals business energy |
| Zdroj: | Physical Review Accelerators and Beams 'Physical Review Accelerators and Beams ', vol: 22, pages: 044701-1-044701-6 (2019) |
| ISSN: | 2469-9888 0023-3323 0218-3013 |
| DOI: | 10.1103/physrevaccelbeams.22.044701 |
| Popis: | Short-period crystalline undulators have the potential to enable intense and monochromatic sources of hard X and $\ensuremath{\gamma}$ 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. |
| Databáze: | OpenAIRE |
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