scholarly journals First observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy protons

2009 ◽  
Vol 682 (3) ◽  
pp. 274-277 ◽  
Author(s):  
W. Scandale ◽  
A. Vomiero ◽  
E. Bagli ◽  
S. Baricordi ◽  
P. Dalpiaz ◽  
...  
Keyword(s):  
Silicon Crystal ◽  
High Energy ◽  
Volume Reflection

Observation of multiple volume reflection by different planes in one bent silicon crystal for high-energy negative particles

2011 ◽  
Vol 93 (5) ◽  
pp. 56002 ◽  
Author(s):  
W. Scandale ◽  
A. Vomiero ◽  
E. Bagli ◽  
S. Baricordi ◽  
P. Dalpiaz ◽  
...  
Keyword(s):  
Silicon Crystal ◽  
High Energy ◽  
Volume Reflection

scholarly journals Angular asymmetry of the nuclear interaction probability of high energy particles in short bent crystals

2020 ◽  
Vol 80 (1) ◽  
Author(s):  
W. Scandale ◽  
F. Cerutti ◽  
L. S. Esposito ◽  
M. Garattini ◽  
S. Gilardoni ◽  
...  
Keyword(s):  
Silicon Crystal ◽  
Nuclear Interaction ◽  
High Energy ◽  
Planar Channeling ◽  
The North ◽  
Volume Reflection ◽  
Bent Crystals ◽  
First Time ◽  
High Energy Particles ◽  
Hadron Beam

AbstractThe rate of inelastic nuclear interactions in a short bent silicon crystal was precisely measured for the first time using a 180 GeV/c positive hadron beam produced in the North Experimental Area of the CERN SPS. An angular asymmetry dependence on the crystal orientation in the vicinity of the planar channeling minimum has been observed. For the inspected crystal, this probability is about $$\sim 20\%$$∼20% larger than in the amorphous case because of the atomic density increase along the particle trajectories in the angular range of volume reflection, whose dimension is determined by the crystal bending angle. Instead, for the opposite angular orientation with respect to the planar channeling, there is a smaller probability excess of $$\sim 4\%$$∼4%.

scholarly journals High-efficiency deflection of high energy protons due to channeling along the 〈110〉 axis of a bent silicon crystal

2016 ◽  
Vol 760 ◽  
pp. 826-831 ◽  
Author(s):  
W. Scandale ◽  
G. Arduini ◽  
M. Butcher ◽  
F. Cerutti ◽  
M. Garattini ◽  
...  
Keyword(s):  
High Efficiency ◽  
Silicon Crystal ◽  
High Energy

scholarly journals Observation of channeling and volume reflection in bent crystals for high-energy negative particles

2009 ◽  
Vol 681 (3) ◽  
pp. 233-236 ◽  
Author(s):  
W. Scandale ◽  
A. Vomiero ◽  
E. Bagli ◽  
S. Baricordi ◽  
P. Dalpiaz ◽  
...  
Keyword(s):  
High Energy ◽  
Volume Reflection ◽  
Bent Crystals

scholarly journals CRYSTAL COLLIMATION STUDIES AT THE TEVATRON (T-980)

2010 ◽  
Vol 25 (supp01) ◽  
pp. 98-105 ◽  
Author(s):  
N.V. MOKHOV ◽  
G.E. ANNALA ◽  
A. APYAN ◽  
R.A. CARRIGAN ◽  
A.I. DROZHDIN ◽  
...  
Keyword(s):  
Proton Beam ◽  
System Performance ◽  
Superconducting Magnets ◽  
Silicon Crystal ◽  
High Energy ◽  
Experimental Setup ◽  
Beam Diagnostics ◽  
Bent Crystal ◽  
Beam Halo ◽  
Simulation Results

Bent-crystal channeling is a technique with a potential to increase beam-halo collimation efficiency in high-energy colliders. First measurements at the Tevatron in 2005 have shown that using a thin silicon crystal to deflect the 1-TeV proton beam halo onto a secondary collimator improves the system performance by reducing the machine impedance, beam losses in the collider detectors and irradiation of the superconducting magnets, all in agreement with simulations. Recent results, obtained with an improved goniometer and enhanced beam diagnostics, are reported here for dedicated beam studies and first full collider stores along with simulation results and plans for substantial enhancement of the T-980 experimental setup.

Volume reflection of 1-GeV protons by a bent silicon crystal

JETP Letters ◽  
2006 ◽  
Vol 84 (7) ◽  
pp. 372-376 ◽  
Author(s):  
Yu. M. Ivanov ◽  
N. F. Bondar’ ◽  
Yu. A. Gavrikov ◽  
A. S. Denisov ◽  
A. V. Zhelamkov ◽  
...  
Keyword(s):  
Silicon Crystal ◽  
Volume Reflection

scholarly journals STUDIES AND APPLICATION OF BENT CRYSTALS FOR BEAM STEERING AT 70 GEV IHEP ACCELERATOR

2010 ◽  
Vol 25 (supp01) ◽  
pp. 86-97
Author(s):  
A.G. AFONIN ◽  
V.T. BARANOV ◽  
G.I. BRITVICH ◽  
V.N. CHEPEGIN ◽  
YU.A. CHESNOKOV ◽  
...  
Keyword(s):  
Beam Steering ◽  
High Energy ◽  
Proton Synchrotron ◽  
Beam Extraction ◽  
Reflection Effect ◽  
Light Ions ◽  
Volume Reflection ◽  
High Energy Collider ◽  
Major Attention ◽  
Bent Crystals

This report overviews studies accomplished in the U70 proton synchrotron of IHEP-Protvino during the recent two decades. Major attention is paid to a routine application of bent crystals for beam extraction from the machine. It has been confirmed experimentally that efficiency of beam extraction with a crystal deflector of around 85% is well feasible for a proton beam with intensity up to 1012 protons per cycle. Another trend is to use bent crystals for halo collimation in a high energy collider. New promising options emerge for, say, LHC and ILC based on the "volume reflection" effect, which has been discovered recently in machine study runs at U70 of IHEP (50 GeV) and SPS of CERN (400 GeV). Perspectives to use bent crystals for extraction of light ions from the U70 accelerator are also disclosed.

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