High-Efficiency Deflection of High-Energy Protons through Axial Channeling in a Bent Crystal

Beam deflection due to axial channeling in a silicon crystal bent along the [111] axis was observed with 400  GeV/c protons at the CERN Super Proton Synchrotron. The condition for doughnut scattering of protons by the atomic strings of the crystal was attained. Such a condition allowed one to observ...

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Detalles Bibliográficos
Autores principales: Scandale, Walter, Vomiero, Alberto, Baricordi, Stefano, Dalpiaz, Pietro, Fiorini, Massimiliano, Guidi, Vincenzo, Mazzolari, Andrea, Della Mea, Gianantonio, Milan, Riccardo, Ambrosi, Giovanni, Bertucci, Bruna, Burger, William J, Zuccon, Paolo, Cavoto, Gianluca, Luci, Claudio, Santacesaria, Roberta, Valente, Paolo, Vallazza, Erik, Afonin, Alexander G, Chesnokov, Yury A, Maisheev, Vladimir A, Yazynin, Igor A, Kovalenko, Alexander D, Taratin, Alexander M, Denisov, Alexander S, Gavrikov, Yury A, Ivanov, Yuri M, Lapina, Lyubov P, Malyarenko, Liudmila G, Skorobogatov, Vyacheslav V, Suvorov, Vsevolod M, Vavilov, Sergey A, Bolognini, Davide, Hasan, Said, Mozzanica, Aldo, Prest, Michela
Lenguaje:eng
Publicado: 2008
Materias:
Accelerators and Storage Rings
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.101.164801
http://cds.cern.ch/record/1158278
Descripción
Sumario:Beam deflection due to axial channeling in a silicon crystal bent along the [111] axis was observed with 400  GeV/c protons at the CERN Super Proton Synchrotron. The condition for doughnut scattering of protons by the atomic strings of the crystal was attained. Such a condition allowed one to observe a beam deflection of 50  μrad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results.

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