First results on the SPS beam collimation with bent crystals
Scandale, W.; Arduini, G.; Assmann, R.; Bracco, C.; Gilardoni, S.; Ippolito, V.; Laface, E.; Losito, R.; Masi, A.; Metral, E.; Previtali, V.; Redaelli, S.; Silari, M.; Tlustos, L.; Bagli, E.; Baricordi, S.; Dalpiaz, P.; Guidi, V.; Mazzolari, A.; Vincenzi, D.; Della Mea, Gianantonio; Lombardi, A.; De Salvador, D.; Vallazza, E.; Bolognini, D.; Hasan, S.; Lietti, D.; Mascagna, V.; Mattera, A.; Prest, M.; Cavoto, G.; Ludovici, L.; Mirarchi, D.; Santacesaria, R.; Valente, P.; Murtas, F.; Afonin, A. G.; Chesnokov, Yu. A.; Maisheev, V. A.; Yazynin, I. A.; Kovalenko, A. D.; Taratin, A. M.; Denisov, A. S.; Gavrikov, Yu. A.; Ivanov, Yu. M.; Lapina, L. P.; Malyarenko, L. G.; Skorobogatov, V. V.; Suvorov, V. M.; Vavilov, S. A.; Mokhov, N.; Still, D.; Robert-Demolaize, G.; Markiewicz, T.; Oriunno, M.
2010

Résumé

Experiments were performed at the CERN SPS with 120 GeV/c stored proton beams to assess the possibility of beam halo collimation assisted by bent crystals. A bent crystal was used to deflect horizontally by an angle of about 170 mu rad the beam halo protons in channeling states directing them into a 60 cm long tungsten absorber. The halo loss rate due to nuclear inelastic interactions of protons in the aligned crystal was up to five times smaller than for its amorphous orientation. Channeled fractions, (75 +/- 4)% and (85 +/- 5)% for the two tested silicon crystals, were measured by intercepting the deflected beam with another collimator located between the crystals and the absorber. The pixel detector (MEDIPIX) installed in a Roman pot inside the beam pipe was used to obtain visual images of the deflected beam. (C) 2010 Elsevier B.V. All rights reserved.

Détails

Titre First results on the SPS beam collimation with bent crystals
Auteur(s) Scandale, W. ; Arduini, G. ; Assmann, R. ; Bracco, C. ; Gilardoni, S. ; Ippolito, V. ; Laface, E. ; Losito, R. ; Masi, A. ; Metral, E. ; Previtali, V. ; Redaelli, S. ; Silari, M. ; Tlustos, L. ; Bagli, E. ; Baricordi, S. ; Dalpiaz, P. ; Guidi, V. ; Mazzolari, A. ; Vincenzi, D. ; Della Mea, Gianantonio ; Lombardi, A. ; De Salvador, D. ; Vallazza, E. ; Bolognini, D. ; Hasan, S. ; Lietti, D. ; Mascagna, V. ; Mattera, A. ; Prest, M. ; Cavoto, G. ; Ludovici, L. ; Mirarchi, D. ; Santacesaria, R. ; Valente, P. ; Murtas, F. ; Afonin, A. G. ; Chesnokov, Yu. A. ; Maisheev, V. A. ; Yazynin, I. A. ; Kovalenko, A. D. ; Taratin, A. M. ; Denisov, A. S. ; Gavrikov, Yu. A. ; Ivanov, Yu. M. ; Lapina, L. P. ; Malyarenko, L. G. ; Skorobogatov, V. V. ; Suvorov, V. M. ; Vavilov, S. A. ; Mokhov, N. ; Still, D. ; Robert-Demolaize, G. ; Markiewicz, T. ; Oriunno, M.
Publié dans Physics Letters B
Volume 692
Pages 78-82
Date 2010
Editeur Elsevier
ISSN 0370-2693
Mots-clés (libres)
DOI https://doi.org/10.1016/j.physletb.2010.07.023
Laboratoires LPAP
Le document apparaît dans Production scientifique et compétences > SB - Faculté des sciences de base > IPHYS - Institut de physique > LPAP - Laboratoire de physique des accélérateurs de particules
Publications validées par des pairs
Travail hors EPFL
Articles de journaux
Publié
Date de création de la notice 2011-04-27

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