High-efficiency deflection of high-energy protons through axial channeling in a bent crystal

Scandale, W.; Vomiero, A.; Baricordi, Stefano; Dalpiaz, Pietro; Fiorini, Massimiliano; Guidi, Vincenzo; Mazzolari, Andrea; Milan, Riccardo; Ambrosi, G.; Burger, W. J.; Zuccon, P.; Cavoto, G.; Santacesaria, R.; Valente, P.; Vallazza, E.; Afonin, A. G.; Chesnokov, Y. u. A.; Maisheev, V. A.; Yazynin, I. A.; Kovalenko, A. D.; Taratin, A. M.; Denisov, A. S.; Ivanov, Y. u. M.; Lapina, L. P.; Malyarenko, L. G.; Skorogobogatov, V. V.; Vavilov, S. A.; Bolognini, D.; Hasan, S.; Mozzanica, A.; Prest, M.

doi:10.1103/PhysRevLett.101.164801

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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