Deflection of a 100-MeV positron beam by repeated reflections in thin crystals

The phenomenon of the deflection of a charged particle beam due to channeling in a bent crystal is thoroughly investigated and successfully applied for the extraction of the beam in high-energy accelerators, at the energies of about 10 GeV and higher. However, a big practical interest lies in the ta...

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Bibliographic Details
Published inJETP letters Vol. 98; no. 11; pp. 649 - 651
Main Authors Bellucci, S., Chesnokov, Yu. A., Chirkov, P. N., Ćosić, M., Giannini, G., Maisheev, V. A., Petrović, S., Yazynin, I. A.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.02.2014
Subjects
Atomic
Biological and Medical Physics
Biophysics
Fields
Molecular
Nuclei
Optical and Plasma Physics
Particle and Nuclear Physics
Particles
Physics
Physics and Astronomy
Quantum Information Technology
Solid State Physics
Spintronics
JETP Letter
Crystal Plate
Deflection Angle
Beam Deflection
Thin Crystal
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Summary:The phenomenon of the deflection of a charged particle beam due to channeling in a bent crystal is thoroughly investigated and successfully applied for the extraction of the beam in high-energy accelerators, at the energies of about 10 GeV and higher. However, a big practical interest lies in the task of bending and extracting charged particles with energies below 1 GeV, for example, for the production of ultrastable beams of low emittance for medical and biological applications. That is why a novel crystal technique, namely thin straight crystal targets, is investigated in this article, using crystals as elements for extraction and collimation of the circulating beam in a ring accelerator. The advantages of reflection in straight crystals in comparison with bent crystal channeling consist in the small length of straight crystals along the beam that reduces the amount of nuclear interactions and improves the background. Experimental results were obtained for the bending of a 100 MeV positron beam with using five sequential straight crystals.
ISSN:0021-3640
1090-6487
DOI:10.1134/S0021364013240041