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.

Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles

BAGLI, Enrico;BARICORDI, Stefano;DALPIAZ, Pietro;FIORINI, Massimiliano;GUIDI, Vincenzo;MAZZOLARI, Andrea;VINCENZI, Donato;
2011

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.
2011
W., Scandale; A., Vomiero; Bagli, Enrico; Baricordi, Stefano; Dalpiaz, Pietro; Fiorini, Massimiliano; Guidi, Vincenzo; Mazzolari, Andrea; Vincenzi, Do...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11392/1435720
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