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 microrad 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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Data di pubblicazione: | 2008 | |
Titolo: | High-efficiency deflection of high-energy protons through axial channeling in a bent crystal | |
Autori: | W. Scandale; A. Vomiero; S. Baricordi; P. Dalpiaz; M. Fiorini; V. Guidi; A. Mazzolari; R. Milan; G. Ambrosi; W. J. Burger; P. Zuccon; G. Cavoto; R. Santacesaria; P. Valente; E. Vallazza; A.G. Afonin; Yu. A. Chesnokov; V.A. Maisheev; I. A. Yazynin; A.D. Kovalenko; A. M. Taratin; A.S. Denisov; Yu.M. Ivanov; L.P. Lapina; L.G. Malyarenko; V.V. Skorogobogatov; S.A. Vavilov; D. Bolognini; S. Hasan; A. Mozzanica; M. Prest | |
Rivista: | PHYSICAL REVIEW LETTERS | |
Abstract: | 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 microrad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results. | |
Digital Object Identifier (DOI): | 10.1103/PhysRevLett.101.164801 | |
Handle: | http://hdl.handle.net/11392/532905 | |
Appare nelle tipologie: | 03.1 Articolo su rivista |
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