Channeling 2012

Session

S3.3 Channeling & Crystal Collimation

27 Sept 2012, 11:10

Alghero, Sardegna, Italy

13. Twenty five years of bent crystal channeling applications for beam splitting, extraction and collimation in the U-70 accelerator of IHEP.

Prof. Yury Chesnokov (IHEP)

27/09/2012, 11:10

Channeling & Crystal Collimation

The report presents an overview the results of IHEP activity in the field of study and using bent crystals to steer high-energy particle beams obtained during 1987-2012. The hardware installed to study crystal beam splitting, collimation and extraction is described. It has been shown that the crystal deflectors developed are capable of sustaining long-term operation to deliver high-energy...

57. Strong Reduction of the Off-momentum Halo in Crystal Assisted Collimation of the SPS Beam

Dr Walter Scandale (CERN, European Organization for Nuclear Research, CH-1211 Geneva 23, Switzerland)

27/09/2012, 11:40

Channeling & Crystal Collimation

Study of crystal assisted collimation has been continued at the CERN SPS for different energies of stored beams using 120 GeV/c and 270 GeV/c protons and Pb ions with 270 GeV/c per charge. A bent silicon crystal used as a primary collimator deflected halo particles in channeling regime directing them into the tungsten absorber. A strong correlation of the beam losses in the crystal and...

160. Simulation of the SPS beam collimation

A. Tarantin

27/09/2012, 12:05

81. Potential thermal and radiation damage to crystals in the LHC beams

Prof. George Smirnov (CERN)

27/09/2012, 12:20

Channeling & Crystal Collimation

Limitations on application of silicon crystals for collimation of the LHC beams due to crystal damage are considered in the framework of FLUKA Monte Carlo tool.

118. ABOVE-BARRIER REFLECTION AND DEGENERATE STATES OF ENERGY BAND SPECTRUM IN PLANAR CHANNELING OF ELECTRONS AND POSITRONS

Dr Erine Babakhanyan (National Research Laboratory after A.I. Alikhanian (Yerevan Physics Institute), Armenia)

27/09/2012, 12:40

Channeling Radiation & Related Phenomena

ABSTRACT The motion of a charged particle in a one-dimensional periodic potential of the Krönig-Penney type is considered. The energy band structure, Bloch wave functions in coordinate and momentum representation are investigated in detail. Two sharply distinguished groups of states, i.e. below-barrier and above-barrier, are extracted and the role of both of them in the channeling of...