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Multiple volume reflections of high-energy protons in a sequence of bent silicon crystals assisted by volume capture
CERN.
INFM-CNR Sensor Lab.ORCID iD: 0000-0003-2935-1165
INFN Sezione di Ferrara.
INFN Sezione di Ferrara.
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Number of Authors: 292010 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 688, no 4-5, p. 284-288Article in journal (Refereed) Published
Abstract [en]

Multiple volume reflections of the 400 GeV / c proton beam by the sequence of fourteen bent silicon strips has been studied at the CERN SPS. The sequence is close to be parallel that is the spread of the strip orientation angles is much smaller than their bend angle and eleven strips working coherently in the regime of volume reflections deflected the beam by 110 μrad with the efficiency 88%, which is significantly larger than the estimation based on independent reflections. The mechanism giving the efficiency increase has been studied by simulation. It appears that many particles volume captured in one of the strips take part in volume reflections in the subsequent ones. Such a crystal multi reflector can be successfully used as a primary collimator for the beam halo collimation of high-energy accelerators. © 2010 Elsevier B.V. All rights reserved.

Place, publisher, year, edition, pages
2010. Vol. 688, no 4-5, p. 284-288
Keywords [en]
Beam, Channeling, Crystal, Deflection, Volume reflection
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Other Physics Topics
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Experimental Physics
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URN: urn:nbn:se:ltu:diva-2984DOI: 10.1016/j.physletb.2010.04.044Scopus ID: 2-s2.0-77951252314Local ID: 0bbab9ee-c648-45c3-af58-bafb7c5245e9OAI: oai:DiVA.org:ltu-2984DiVA, id: diva2:975839
Note

Upprättat; 2010; 20141211 (albvom)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-08-20Bibliographically approved

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Vomiero, Alberto

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