Total yield and spectra of positrons produced by channeling radiation from 0.1 ÷ 1.6 GeV electrons

Abdrashitov, S.V.; Bogdanov, O.V.; Dabagov, Sultan B.; Pivovarov, Yu.L.; Tukhfatullin, T.A.

doi:10.1016/j.nimb.2017.03.105

Cited by 6 publications

(6 citation statements)

References 26 publications

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“…Compared with the results obtained for the 1D case of planar CR in our previous work [32], it seems that the nondipole approximation for the 2D case of axial CR plays a more important role. Further investigations are necessary to obtain significant conclusions, e.g., for the application of high-energy CR to produce intense positron beams [28,41].…”

Section: Discussionmentioning

confidence: 99%

Nondipolarity of axial channeling radiation at GeV beam energies

Wagner

Savchenko

Azadegan

et al. 2019

Phys. Rev. Accel. Beams

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We consider the nondipolarity of axial channeling radiation generated in a tungsten single crystal at electron-beam energies of several GeV. The calculations are based on the realistic axial continuous potential. It could be shown that, compared to the dipole approximation, the nondipole approximation results in a considerable variation of the channeling radiation spectrum. In a simulation of positron production via conversion of γ radiation into e þ e − pairs, the observed effect may play an important role.

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Section: Discussionmentioning

confidence: 99%

Nondipolarity of axial channeling radiation at GeV beam energies

Wagner

Savchenko

Azadegan

et al. 2019

Phys. Rev. Accel. Beams

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“…8 GeV at KEK (Tsukuba, Japan) [18], 6 and 10 GeV at CERN (Geneva, Switzerland) [19,20], 46.6 GeV at SLAC (Stanford, U.S.A.) [21]. The features of hybrid positron production by CR of sub-GeV and GeV electrons are described in previous works (see, for instance, in [22][23][24]. Typically, CR frequencies are lower than CB ones at equivalent electron energies.…”

Section: Introductionmentioning

confidence: 84%

“…All calculations have been performed via unpublished Wolfram Mathematica code written by our team. In simulations [22], the 10 µm thickness of a W crystalline radiator is taken that is less than the dechanneling length for 200 MeV electrons [33]. Both CB and B spectra have been drawn for the same radiator thickness.…”

Section: B Cb and Cr Spectra For Moderate Electron Energiesmentioning

confidence: 99%

“…Positrons are commonly produced by the decay of isotopes, i.e. 22 Na, 11 C, 13 N and others, with low intensity positron emission, that is the basics of the positron annihilation spectroscopy [7]. In order to increase the positron flux, it can be produced irradiating the solid target by ultra-intense laser beam with extreme energy density [8] or interacting GeV electrons with a multi PW laser beam [9,10].…”

Section: Introductionmentioning

confidence: 99%

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On a crystal assisted positron source by 010 ÷ 5 MeV electrons

et al. 2020

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“…Channeling of charged particles in periodic crystals (monocrystals, complex crystals, nanostructures, etc.) has the potential to handle the beams: bent crystal channeling may result in beam steering at accelerators providing in such way the opportunity for beam extraction or collimation; at channeling the crystal can act as rather effective compact undulator; channeling becomes very promising instrument for cooling and accelerating muons, for production of positron, etc (Dik et al, 2016;Babaev and Dabagov, 2017;Dabagov and Kalashnikov, 2017;Abdrashitov et al, 2017;Maksyuta et al, 2017;Frolov et al, 2017).…”

Section: Resumementioning

confidence: 99%