CERN Accelerating science

Article
Title Dechanneling of high energy particles in a long bent crystal
Author(s) Scandale, W (CERN) ; Arduini, G (CERN) ; Cerutti, F (CERN) ; Garattini, M (CERN ; Imperial Coll., London) ; Gilardoni, S (CERN) ; Lechner, A (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Mirarchi, D (CERN) ; Montesano, S (CERN) ; Redaelli, S (CERN) ; Rossi, R (CERN ; INFN, Rome) ; Smirnov, G (CERN) ; Breton, D (Orsay, LAL) ; Burmistrov, L (Orsay, LAL) ; Chaumat, V (Orsay, LAL) ; Dubos, S (Orsay, LAL) ; Maalmi, J (Orsay, LAL) ; Puill, V (Orsay, LAL) ; Stocchi, A (Orsay, LAL) ; Bagli, E (INFN, Ferrara ; Ferrara U.) ; Bandiera, L (INFN, Ferrara ; Ferrara U.) ; Romagnoni, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Murtasa, F (LNF, Dafne Light) ; Addesa, F (CERN ; INFN, Rome) ; Cavoto, G (INFN, Rome ; Rome U.) ; Iacoangeli, F (INFN, Rome) ; Galluccio, F (INFN, Naples) ; Afonin, A G (Serpukhov, IHEP) ; Chesnokov, Yu A (Serpukhov, IHEP) ; Durum, A A (Serpukhov, IHEP) ; Maisheev, V A (Serpukhov, IHEP) ; Sandomirskiy, Yu E (Serpukhov, IHEP) ; Yanovich, A A (Serpukhov, IHEP) ; Kovalenko, A D (Dubna, JINR) ; Taratin, A M (Dubna, JINR) ; Denisov, A S (St. Petersburg, INP) ; Gavrikov, Yu A (St. Petersburg, INP) ; Ivanov, Yu M (St. Petersburg, INP) ; Lapina, L P (St. Petersburg, INP) ; Malyarenko, L G (St. Petersburg, INP) ; Skorobogatov, V V (St. Petersburg, INP) ; Auzinger, G (Imperial Coll., London) ; Borg, J (Imperial Coll., London) ; James, T (Imperial Coll., London) ; Hall, G (Imperial Coll., London) ; Pesaresi, M (Imperial Coll., London)
Publication 2019
Number of pages 4
In: Nucl. Instrum. Methods Phys. Res., B 438 (2019) 38-41
DOI 10.1016/j.nimb.2018.10.035
Subject category Accelerators and Storage Rings
Abstract Experimental results on deflection of a 180 GeV/c $\pi^+$-meson beam by a 23 mm long bent silicon crystal are analyzed to study the dechanneling process of particles due to multiple scattering. A new approach for the determination of contributions from atomic nuclei and electrons to the multiple scattering using the experimental data for random crystal orientations is suggested. The results of simulations performed using this approach, in which the contribution from atomic electrons is considered according to the prescription of Bethe, are in a good agreement with the experiment.
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