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.
Type
research article
Authors
Scandale, W.
•
Vomiero, A.
•
Bagli, E.
•
Baricordi, S.
•
Dalpiaz, P.
•
Fiorini, M.
•
Guidi, V.
•
Mazzolari, A.
•
Vincenzi, D.
•
Milan, R.
Publication date
2011
Published in
Volume
93
Issue
5
Article Number
56002
Subjects
Peer reviewed
REVIEWED
EPFL units
Available on Infoscience
May 13, 2011
Use this identifier to reference this record