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Experimental study of the radiation emitted by 180-GeV/c electrons and positrons volume-reflected in a bent crystal
/ Scandale, Walter (CERN) ; Vomiero, A (INFM, Brescia) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Della Mea, G (INFN, Legnaro) ; Milan, R (INFN, Legnaro) ; Ambrosi, G (INFN, Perugia) et al.
The radiation emitted by 180-GeV/c volume-reflected electrons and positrons impinging on a bent crystal has been measured by the H8RD22 Collaboration on the H8 beamline at the CERN SPS. A dedicated spectrometer has been developed to measure high-energy photon spectra (up to ~100 GeV) under volume reflection: photon and charged particle beams have been separated by a bending magnet and leptons were detected and tagged by microstrip silicon detectors and a Pb-scintillator sampling calorimeter. [...]
2009 - 9 p.
- Published in : Phys. Rev. A 79 (2009) 012903
APS Published version, local copy: PDF;
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Observation of Multiple Volume Reflection of Ultrarelativistic Protons by a Sequence of Several Bent Silicon Crystals
/ Scandale, Walter (CERN) ; Vomiero, A (INFM, Brescia) ; Baricordi, S (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, P (INFN, Ferrara ; Ferrara U.) ; Fiorini, M (INFN, Ferrara ; Ferrara U.) ; Guidi, V (INFN, Ferrara ; Ferrara U.) ; Mazzolari, A (INFN, Ferrara ; Ferrara U.) ; Della Mea, G (INFN, Legnaro) ; Milan, R (INFN, Legnaro) ; Ambrosi, G (INFN, Perugia) et al.
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 =52.96±0.14 µrad. [...]
2009 - 4 p.
- Published in : Phys. Rev. Lett. 102 (2009) 084801
APS Published version, local copy: PDF;
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Volume Reflection Dependence of 400 GeV/c Protons on the Bent Crystal Curvature
/ Scandale, Walter (CERN) ; Vomiero, A (INFM, Brescia) ; Baricordi, S (INFN, Ferrara) ; Dalpiaz, P (INFN, Ferrara) ; Fiorini, M (INFN, Ferrara) ; Guidi, V (INFN, Ferrara) ; Mazzolari, A (INFN, Ferrara) ; Milan, R (INFN, Legnaro) ; Della Mea, Gianantonio (Trento U.) ; Ambrosi, G (INFNPerugia) et al.
2008
- Published in : Phys. Rev. Lett. 101 (2008) 234801
APS Published version, local copy: PDF;
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5.
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Deflection of 400 GeV/c proton beam with bent silicon crystals at the CERN Super Proton Synchrotron
/ Scandale, Walter (CERN) ; Carnera, Alberto ; Della Mea, Gianantonio ; De Salvador, Davide ; Milan, Riccardo ; Vomiero, Alberto ; Baricordi, Stefano ; Dalpiaz, Pietro ; Fiorini, Massimiliano ; Guidi, Vincenzo et al.
This paper presents a detailed study of the deflection phenomena of a 400 GeV/c proton beam impinging on a new generation of bent silicon crystals; the tests have been performed at the CERN Super Proton Synchrotron H8 beam line. Channeling and volume reflection angles are measured with an extremely precise goniometer and with high resolution silicon microstrip detectors. [...]
2008
- Published in : Phys. Rev. Spec. Top. Accel. Beams 11 (2008) 063501
APS Published version, local copy: PDF;
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Double volume reflection of a proton beam by a sequence of two bent crystals
/ Scandale, Walter (CERN) ; Carnera, Alberto (INFN, Legnaro ; Padua U.) ; Della Mea, Gianantonio (INFN, Legnaro ; Trento U.) ; De Salvador, Davide (INFN, Legnaro ; Padua U.) ; Milan, Riccardo (INFN, Legnaro) ; Vomiero, Alberto (INFN, Legnaro ; INFM, Brescia) ; Baricordi, Stefano (INFN, Ferrara) ; Dalpiaz, Pietro (INFN, Ferrara) ; Fiorini, Massimiliano (INFN, Ferrara) ; Guidi, Vincenzo (INFN, Ferrara) et al.
The doubling of the angle of beam deflection due to volume reflection of protons by a sequence of two bent silicon crystals was experimentally observed at the 400 GeV proton beam of the CERN SPS. A similar sequence of short bent crystals can be used as an efficient primary collimator for the Large Hadron Collider..
2008
- Published in : Phys. Lett. B 658 (2008) 109-111
- Published in : Phys. Lett. B 660 (2008) 610-611 (Erratum)
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High-Efficiency Volume Reflection of an Ultrarelativistic Proton Beam with a Bent Silicon Crystal
/ Scandale, Walter (CERN) ; Still, Dean A ; Carnera, Alberto ; Della Mea, Gianantonio ; De Salvador, Davide ; Milan, Riccardo ; Vomiero, Alberto ; Baricordi, Stefano ; Dalpiaz, Pietro ; Fiorini, Massimiliano et al.
The volume reflection phenomenon was detected while investigating 400 GeV proton interactions with bent silicon crystals in the external beam H8 of the CERN Super Proton Synchrotron. Such a process was observed for a wide interval of crystal orientations relative to the beam axis, and its efficiency exceeds 95%, thereby surpassing any previously observed value. [...]
CARE-Pub-07-001; CARE-Pub-2007-001.-
CARE, 2007
- Published in : Phys. Rev. Lett. 98 (2007) 154801
APS Published version, local copy: PDF;
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High-efficiency beam extraction and collimation using channeling in very short bent crystals
/ Afonin, A G (Institute for High Energy Physics, Protvino, Russia) ; Baranov, V T (Institute for High Energy Physics, Protvino, Russia) ; Biryukov, V M (Institute for High Energy Physics, Protvino, Russia) ; Breese, M B H (Surrey Univ., Guildford, UK) ; Chepegin, V N (Institute for High Energy Physics, Protvino, Russia) ; Chesnokov, Yu A (Institute for High Energy Physics, Protvino, Russia) ; Guidi, V (Ferrara Univ., Department of Physics and INFN, Italy) ; Gudi, V (Ferrara Univ., Department of Physics and INFN, Italy) ; Ivanov, Yu M (Petersburg Nuclear Physics Institute, Gatchina, Russia) ; Kotov, V I (Institute for High Energy Physics, Protvino, Russia) et al.
Geneva : CERN, 2001
- Published in : Phys. Rev. Lett. 87 (2001) 94802
APS Published version, local copy: PDF;
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