Focusing crystal device for deflecting a divergent 50-GeV proton beam

At large accelerators, bent crystals are employed to deflect weakly divergent proton beams at the stages of extraction and collimation. We demonstrate that a divergent particle beam may be efficiently deflected using a crystal with a focusing edge. A proton beam with divergence near 1 mrad, which ex...

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Bibliographic Details
Published in:JETP letters 2016-07, Vol.104 (1), p.12-14
Main Authors: Afonin, A. G., Britvich, G. I., Bugorskii, A. P., Bulgakov, M. K., Durum, A. A., Kostin, M. Yu, Lutchev, A. V., Maisheev, V. A., Sandomirskii, Yu. E., Pitalev, V. I., Poluektov, I. V., Chesnokov, Yu. A., Chirkov, P. N., Yanovich, A. A.
Format: Article
Language:English
Subjects:
Atomic
Biological and Medical Physics
Biophysics
Crystals
Fields
Molecular
Nuclei
Optical and Plasma Physics
Particle accelerators
Particle and Nuclear Physics
Particle beams
Particles
Physics
Physics and Astronomy
Proton beams
Quantum Information Technology
Solid State Physics
Spintronics
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Summary:At large accelerators, bent crystals are employed to deflect weakly divergent proton beams at the stages of extraction and collimation. We demonstrate that a divergent particle beam may be efficiently deflected using a crystal with a focusing edge. A proton beam with divergence near 1 mrad, which exceeds the Lindhard angle by a factor of 30, has been experimentally deflected by 1.8 mrad with efficiency near 15%. The proposed focusing crystal may serve as an element of a novel optical system for secondary-particle beams in the TeV energy region.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364016130051