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

Scandale, W. (author)
CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland
Vomiero, Alberto (author)
INFM-CNR, Via Vallotti 9, 25133 Brescia, Italy
Bagli, E. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
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Baricordi, S. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Dalpiaz, P. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Fiorini, M. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Guidi, V. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Mazzolari, A. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Vincenzi, D. (author)
INFN Sezione di Ferrara, Dipartimento di Fisica, Università di Ferrara Via Saragat 1, 44100 Ferrara, Italy
Milan, R. (author)
INFN Laboratori Nazionali di Legnaro, Viale Università 2, 35020 Legnaro (PD), Italy
Della Mea, Gianantonio (author)
Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Università di Trento, Via Mesiano 77, 38050 Trento, Italy
Vallazza, E. (author)
INFN Sezione di Trieste, Via Valerio 2, 34127 Trieste, Italy
Afonin, A. G. (author)
Institute of High Energy Physics, Moscow Region, RU-142284 Protvino, Russia
Chesnokov, Yu A. (author)
Institute of High Energy Physics, Moscow Region, RU-142284 Protvino, Russia
Maisheev, V. A. (author)
Institute of High Energy Physics, Moscow Region, RU-142284 Protvino, Russia
Yazynin, I. A. (author)
Institute of High Energy Physics, Moscow Region, RU-142284 Protvino, Russia
Golovatyuk, V. M. (author)
Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow Region, Russia
Kovalenko, A. D. (author)
Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow Region, Russia
Taratin, A. M. (author)
Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow Region, Russia
Denisov, A. S. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Gavrikov, Yu. A. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Ivanov, Yu. M. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Lapina, L. P. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Malyarenko, L. G. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Skorobogatov, V. V. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Suvorov, V. M. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Vavilov, S. A. (author)
Petersburg Nuclear Physics Institute, 188300 Gatchina, Leningrad Region, Russia
Bolognini, D. (author)
Università dell'Insubria, via Valleggio 11, 22100 Como, Italy; INFN Sezione di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
Hasan, S. (author)
Università dell'Insubria, via Valleggio 11, 22100 Como, Italy; INFN Sezione di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
Mattera, A. (author)
Università dell'Insubria, via Valleggio 11, 22100 Como, Italy; INFN Sezione di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
Prest, M. (author)
Università dell'Insubria, via Valleggio 11, 22100 Como, Italy; INFN Sezione di Milano Bicocca, Piazza della Scienza 3, 20126 Milano, Italy
Shiraishi, S. (author)
Fermi National Laboratory, PO Box 500, Batavia, IL 60510-0500, USA
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 (creator_code:org_t)
Elsevier BV, 2009
2009
English.
In: Physics Letters B. - : Elsevier BV. - 0370-2693 .- 1873-2445. ; 680:4, s. 301-304
Related links:
https://irinsubria.u...
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https://urn.kb.se/re...
https://doi.org/10.1...
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Deflection due to axial channeling in a silicon crystal bent along the 〈111〉 axis was observed for 150 GeV/c negative particles, mainly π- mesons, at one of the secondary beams of the CERN SPS. The whole beam was deflected to one side with the efficiency of about 90% and with the peak position at the bend crystal angle α = 43 μrad. The deflection occurs mainly due to doughnut scattering of above-barrier particles by the atomic strings of the crystal. However, due to a high probability of particle recapture into bound states with the atomic strings their contribution to the deflection should be about 15% for our case according to simulation results. © 2009 Elsevier B.V. All rights reserved.

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