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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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2.
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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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3.
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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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4.
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Observation of parametric X-rays produced by 400 GeV/c protons in bent crystals
/ Scandale, W (Orsay, LAL ; CERN) ; Arduini, G (CERN) ; Assmann, R (CERN) ; Cerutti, F (CERN) ; Gilardoni, S (CERN) ; Christiansen, J (CERN) ; Laface, E (CERN) ; Losito, R (CERN) ; Masi, A (CERN) ; Metral, E (CERN) et al.
Spectral maxima of parametric X-ray radiation (PXR) produced by 400 GeV/c protons in bent silicon crystals aligned with the beam have been observed in an experiment at the H8 external beam of the CERN SPS. The total yield of PXR photons was about 10(-6) per proton. [...]
2011
- Published in : Phys. Lett. B 701 (2011) 180-185
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5.
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High-Efficiency Deflection of High-Energy Protons through Axial Channeling in a Bent Crystal
/ Scandale, Walter (CERN) ; Vomiero, Alberto (INFM, Brescia) ; Baricordi, Stefano (INFN, Ferrara ; Ferrara U.) ; Dalpiaz, Pietro (INFN, Ferrara ; Ferrara U.) ; Fiorini, Massimiliano (INFN, Ferrara ; Ferrara U.) ; Guidi, Vincenzo (INFN, Ferrara ; Ferrara U.) ; Mazzolari, Andrea (INFN, Ferrara ; Ferrara U.) ; Della Mea, Gianantonio (INFN, Legnaro) ; Milan, Riccardo (INFN, Legnaro) ; Ambrosi, Giovanni (INFN, Perugia ; Perugia U.) et al.
Beam deflection due to axial channeling in a silicon crystal bent along the [111] axis was observed with 400 GeV/c protons at the CERN Super Proton Synchrotron. The condition for doughnut scattering of protons by the atomic strings of the crystal was attained. [...]
2008
- Published in : Phys. Rev. Lett. 101 (2008) 164801
APS Published version, local copy: PDF;
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6.
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Observation of Proton Reflection on Bent Silicon Crystals at the CERN SPS
/ Scandale, Walter
/H8RDD22 Collaboration
We report the observation of the so-called volume reflection effect with 400 GeV/c protons interacting with bent silicon crystals in the H8 beam line performed by the H8RDD22 Collaboration at the CERN SPS. The volume reflection is an effect of the same nature of the particle channeling among the crystalline planes of a bent crystal. [...]
CERN-AT-2007-022-DHO; CARE-Conf-07-017-HHH; CARE-Conf-2007-017-HHH.-
Geneva : CERN, 2007 - 4 p.
Access to fulltext document: PDF; Fulltext: PDF;
In : 22nd Particle Accelerator Conference, Albuquerque, NM, USA, 25 - 29 Jun 2007, pp.751
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7.
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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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8.
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Morphological and structural studies of crystals for channeling of relativistic
/ Baricordi, S ; Guidi, V ; Malagù, C ; Martinelli, G ; Milan, E ; Stefancich, M ; Carnera, A ; Sambo, A ; Scian, S ; Vomiero, A et al.
CERN, 2005
Published version from CERN: PDF; External link: Fulltext
In : 1st CARE-HHH-APD Workshop on Beam Dynamics in Future Hadron Colliders and Rapidly Cycling High-Intensity Synchrotrons, CERN, Geneva, Switzerland, 8 - 11 Nov 2004, pp.71-74 (CERN-2005-006)
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9.
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Manipulation of Negatively Charged Beams via Coherent Effects in Bent Crystals
/ Scandale, Walter (CERN) ; Guidi, Vincenzo (INFN, Ferrara) ; Bagli, Enrico (INFN, Ferrara) ; Mazzolari, Andrea (INFN, Ferrara) ; Afonin, Alexander (Serpukhov, IHEP) ; Chesnokov, Yuri (Serpukhov, IHEP) ; Maisheev, Vladimir (Serpukhov, IHEP) ; Yazynin, Igor (Serpukhov, IHEP) ; Baricordi, Stefano (Ferrara U.) ; Dalpiaz, Pietro (Ferrara U.) et al.
We review the experimental evidences we recorded with volume reflection and planar and axial channelings with negatively charged particles beam. High deflection efficiency was observed in all cases [...]
2010
External link: Published version from JACoW
In : 1st International Particle Accelerator Conference, Kyoto, Japan, 23 - 28 May 2010, pp.THPD052
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10.
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First observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy protons
/ Scandale, E (CERN) ; Vomiero, A (INFM, Brescia) ; Bagli, E (INFN, Ferrara) ; Baricordi, S (INFN, Ferrara) ; Dalpiaz, P (INFN, Ferrara) ; Fiorini, M (INFN, Ferrara) ; Guidi, V (INFN, Ferrara) ; Mazzolari, A (INFN, Ferrara) ; Vincenzi, D (INFN, Ferrara) ; Milan, R (INFN, Legnaro) et al.
Multiple volume reflection by different planes in a bent silicon crystal with its 111 axis orientation close to the beam direction was observed for the first time for 400 GeV/c protons at the CERN SPS. The proton beam was deflected to the side opposite to the crystal bend by an angle of about 67 μrad, which is five times larger than in a single volume reflection by the (110) bent planes [...]
2009
- Published in : Phys. Lett. B 682 (2009) 274-277
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