Channeling and volume reflection of high-energy charged particles in short bent crystals. Crystal assisted collimation of the accelerator beam halo

2019 ◽  
Vol 815 ◽  
pp. 1-107 ◽  
Author(s):  
W. Scandale ◽  
A.M. Taratin
Keyword(s):  
Charged Particles ◽  
High Energy ◽  
Beam Halo ◽  
Volume Reflection ◽  
Bent Crystals

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 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.

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%.

Dynamics of high-energy charged particles in straight and bent crystals

1995 ◽  
Vol 38 (10) ◽  
pp. 1119-1145 ◽  
Author(s):  
A I Akhiezer ◽  
N F Shul'ga ◽  
V I Truten' ◽  
A A Grinenko ◽  
V V Syshchenko
Keyword(s):  
Charged Particles ◽  
High Energy ◽  
Bent Crystals

Dynamics of high-energy charged particles in straight and bent crystals

1995 ◽  
Vol 165 (10) ◽  
pp. 1165 ◽  
Author(s):  
A.I. Akhiezer ◽  
N.F. Shul'ga ◽  
V.I. Truten' ◽  
A.A. Grinenko ◽  
V.V. Syshchenko
Keyword(s):  
Charged Particles ◽  
High Energy ◽  
Bent Crystals

ENERGY ORDERING EFFECTS IN THE ARRIVAL DIRECTIONS OF ULTRA-HIGH ENERGY COSMIC RAYS MEASURED BY THE PIERRE AUGER OBSERVATORY

2011 ◽  
Vol 20 (supp02) ◽  
pp. 50-56
Author(s):  
◽  
PETER SCHIFFER
Keyword(s):  
Cosmic Rays ◽  
Magnetic Fields ◽  
Charged Particles ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
Ultra High Energy ◽  
High Energy Cosmic Rays ◽  
Ordering Effects ◽  
Arrival Directions

The Pierre Auger Observatory is the world's largest experiment for the measurement of ultra-high energy cosmic rays (UHECRs). These UHECRs are assumed to be to be charged particles, and thus are deflected in cosmic magnetic fields. Recent results of the Pierre Auger Observatory addressing the complex of energy ordering of the UHECRs arrival directions are reviewed in this contribution. So far no significant energy ordering has been observed.

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