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.
|Data di pubblicazione:||2011|
|Titolo:||Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1209/0295-5075/93/56002|
|Appare nelle tipologie:||2.1 Articolo su rivista |