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High-efficiency deflection of high-energy protons through axial channeling in a bent crystal |
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| Authors: | 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 |
| Institution: | CERN, European Organization for Nuclear Research, Geneva 23, Switzerland. |
| 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 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. |
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