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 observe a...

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Veröffentlicht in:	Physical review letters 2008-10, Vol.101 (16), p.164801-164801, Article 164801
Hauptverfasser:	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
Format:	Artikel
Sprache:	eng
Schlagworte:	CERN SPS SYNCHROTRON CHANNELING CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS CRYSTALS GEV RANGE 100-1000 PROTONS SCATTERING SILICON SIMULATION
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Zusammenfassung:	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 murad with about 30% efficiency. The contribution of hyperchanneled states of protons to the observed beam deflection was less than 2% according to simulation results.
ISSN:	0031-9007 1079-7114 1079-7114
DOI:	10.1103/PhysRevLett.101.164801