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- Scandale, W., et al.
(author)
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Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles
- 2011
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In: Europhysics letters. - : EDP Sciences. - 0295-5075 .- 1286-4854. ; 93:5
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Journal article (peer-reviewed)abstract
- Multiple volume reflection by different planes passing through the 〈111〉 axis in a bent silicon crystal was observed for the first time for 150 GeV/c negative particles, π- mesons, at one of the secondary beams of the CERN SPS. The beam of π- mesons was deflected opposite to the crystal bend by an angle of about 48 μrad, which is 4.6 times larger than in a single volume reflection by the (110) bent planes. The one-side deflection efficiency was about 65%. Multiple volume reflection transforms to a single volume reflection when the orientation angle of the 〈111〉 axis relative to the beam direction is increased. Copyright © 2011 Europhysics Letters Association.
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