New beam optics on the basis of bent single crystals

Maisheev, V. A.; Chesnokov, Yu. A.

doi:10.1016/j.nimb.2017.02.086

Cited by 9 publications

(8 citation statements)

References 6 publications

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“…5) The effect discovered is also of great practical importance. For example, in [27,28] an application using two focusing crystals for focusing beams in two orthogonal planes was proposed. It can be expected that the effect of reducing multiple scattering will improve the performance of such a system of lenses.…”

Section: Discussionmentioning

confidence: 99%

Reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals

et al. 2019

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We present the experimental observation of the reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals. According to our measurements the rms angle of multiple scattering in the plane orthogonal to the plane of the channeling is less than half that for non-channeled particles moving in the same crystal. In the experiment we use focusing bent single crystals. Such crystals have a variable thickness in the direction of beam propagation. This allows us to measure rms angles of scattering as a function of thickness for channeled and non-channeled particles. The behaviour with thickness of non-channeled particles is in agreement with expectations whereas the behaviour of channeled particles has unexpected features. We give a semi-quantitative explanation of the observed effect.

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Section: Discussionmentioning

confidence: 99%

Reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals

et al. 2019

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“…This possibility of handling the charged particle beam was considered theoretically and experimentally in Refs. [14,23,24].…”

Section: Discussionmentioning

confidence: 99%

Comprehensive study of beam focusing by crystal devices

Scandale¹,

Arduini²,

Cerutti³

et al. 2018

Phys. Rev. Accel. Beams

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International audienceThis paper is devoted to an experimental study of focusing and defocusing positively charged particle beams with the help of specially bent single crystals. Four crystals have been fabricated for this purpose. The studies have been performed at the CERN SPS in 400 GeV/c proton and 180 GeV/c pion beams. The results of measurements of beam envelopes are presented. The rms size of the horizontal profile at the focus was 5–8 times smaller than at the exit of the crystals. The measured focal lengths were 4–21 m. The results of measurements are in good agreement with calculations. Possible applications of focusing crystals in present and future high energy accelerators are discussed

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“…In this case the beam with a small size (in bending plane) and with a valuable angle divergence may be transformed into parallel one. The paper [4] contains the theoretical description of the inverse focusing and Ref. [8] is devoted to the experimental observation of this focusing mode.…”

Section: Focusing Crystals As a Tool For Obtaining Parallel Pion Beammentioning

confidence: 99%

“…Besides, in the papers [3,4] another possibility to obtain secondary beams was considered. It is based on the idea to produce secondary particles on the target located inside the vacuum chamber of the accelerator.…”

Section: Introductionmentioning

confidence: 99%

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High energy neutrino beam generation based on crystal optics

Chesnokov,

Maisheev

2018

Preprint

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The problem of creation of high energy neutrino beams on the basis of modern and future circular proton accelerators with the help of traditional technology seems to be expensive and difficult. Because of this, we propose the solution of this problem based on the usage of focusing bend single crystals. In the paper we demonstrate the possibilities of acceptance and focusing of a pion beam with the help of a crystal optical lens system. As an illustration of these features the calculated neutrino fluxes for energy of circulating proton beam equal to 6.5 TeV are presented.

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New beam optics on the basis of bent single crystals

Cited by 9 publications

References 6 publications

Reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals

Reduction of multiple scattering of high-energy positively charged particles during channeling in single crystals

Comprehensive study of beam focusing by crystal devices

High energy neutrino beam generation based on crystal optics

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