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Crystal-assisted beam extraction and collimation at the U-70 circular accelerator

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Abstract

New crystal devices—an array of bent strips and a fan-type reflector based on thin straight plates—have been used to study extraction and collimation of the beam circulating in the accelerator at energies of 50 and 1.3 GeV. It is shown that these devices allow high-efficiency beam steering in a wide energy range. For 50-GeV protons, the efficiency of beam extraction and collimation is ∼90%, which is the highest efficiency attained for this method to date. It has been observed that the use of different crystals causes the particle loss at the accelerator downstream of the absorber to decrease by a factor of 2–3 in comparison with the standard single-stage scheme of beam collimation by a steel absorber.

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Authors and Affiliations

  1. Institute for High Energy Physics, ul. Pobedy 1, Protvino, Moscow oblast, 142281, Russia

    A. G. Afonin, V. T. Baranov, S. A. Belov, V. N. Gorlov, I. V. Ivanova, D. M. Krylov, V. A. Maisheev, D. A. Savin, E. A. Syshchikov, V. I. Terekhov, V. N. Chepegin, Yu. A. Chesnokov, P. N. Chirkov & I. A. Yazynin

  2. LNF INFN, Frascati, Italy

    S. Bellucci, S. Bini, G. Giannini & A. D. Ermolaev

Authors
  1. A. G. Afonin
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  2. V. T. Baranov
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  3. S. Bellucci
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  4. S. A. Belov
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  5. S. Bini
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  6. V. N. Gorlov
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  7. G. Giannini
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  8. A. D. Ermolaev
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  9. I. V. Ivanova
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  10. D. M. Krylov
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  11. V. A. Maisheev
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  12. D. A. Savin
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  13. E. A. Syshchikov
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  14. V. I. Terekhov
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  15. V. N. Chepegin
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  16. Yu. A. Chesnokov
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  17. P. N. Chirkov
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  18. I. A. Yazynin
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Additional information

Original Russian Text © A.G. Afonin, V.T. Baranov, S. Bellucci, S.A. Belov, S. Bini, V.N. Gorlov, G. Giannini, A.D. Ermolaev, I.V. Ivanova, D.M. Krylov, V. A. Maisheev, D.A. Savin, E.A. Syshchikov, V.I. Terekhov, V.N. Chepegin, Yu.A. Chesnokov, P. N. Chirkov, I.A. Yazynin, 2011, published in Pribory i Tekhnika Eksperimenta, 2011, No. 1, pp. 5–11.

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Afonin, A.G., Baranov, V.T., Bellucci, S. et al. Crystal-assisted beam extraction and collimation at the U-70 circular accelerator. Instrum Exp Tech 54, 1–7 (2011). https://doi.org/10.1134/S002044121101012X

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  • DOI: https://doi.org/10.1134/S002044121101012X

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