Observation of multiple volume reflection of ultrarelativistic protons by a sequence of several bent silicon crystals.
作者信息
Scandale W, Vomiero A, Baricordi S, Dalpiaz P, Fiorini M, Guidi V, Mazzolari A, Della Mea G, Milan R, Ambrosi G, Zuccon P, Bertucci B, Burger W, Duranti M, Cavoto G, Santacesaria R, Valente P, Luci C, Iacoangeli F, Vallazza E, Afonin A G, Chesnokov Yu A, Kotov V I, Maisheev V A, Yazynin I A, Kovalenko A D, Taratin A M, Denisov A S, Gavrikov Y A, Ivanov Yu M, Lapina L P, Malyarenko L G, Skorogobogatov V V, Suvorov V M, Vavilov S A, Bolognini D, Hasan S, Mozzanica A, Prest M
机构信息
CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland.
出版信息
Phys Rev Lett. 2009 Feb 27;102(8):084801. doi: 10.1103/PhysRevLett.102.084801. Epub 2009 Feb 23.
The interactions of 400 GeV protons with different sequences of bent silicon crystals have been investigated at the H8 beam line of the CERN Super Proton Synchrotron. The multiple volume reflection of the proton beam has been studied in detail on a five-crystal reflector measuring an angular beam deflection theta = 52.96 +/- 0.14 microrad. The efficiency was found larger than 80% for an angular acceptance at the reflector entrance of 70 microrad, with a maximal efficiency value of epsilon = 0.90 +/- 0.01 +/- 0.03.
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