Beam deflection due to axial channeling in a silicon crystal bent along the h111i 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 _rad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results
High-Efficiency Deflection of High-Energy Protons through Axial Channeling in a Bent Crystal / Scandale, W., Vomiero, A., Baricordi, S., Dalpiaz, P., Fiorini, M., Guidi, V., Mazzolari, A., Della Mea, G., Milan, R., Ambrosi, G., Bertucci, B., Zuccon, P., Cavoto, G., Luci, C., Santacesaria, R., Valente, P., Vallazza, E., Afonin, A.G., Chesnokov, Y.u.A., Maisheev, V.A., et al.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - STAMPA. - 101:16(2008), pp. 164801-1-164801-4. [10.1103/PhysRevLett.101.164801]
High-Efficiency Deflection of High-Energy Protons through Axial Channeling in a Bent Crystal
G. Della Mea;P. Zuccon;
2008-01-01
Abstract
Beam deflection due to axial channeling in a silicon crystal bent along the h111i 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 _rad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results| File | Dimensione | Formato | |
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PRL 101 -2008-16 164801.pdf
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