Location via proxy:   [ UP ]  
[Report a bug]   [Manage cookies]                
  • Open Access

Advantages of axially aligned crystals used in positron production at future linear colliders

X. Artru, R. Chehab, M. Chevallier, and V. Strakhovenko
Phys. Rev. ST Accel. Beams 6, 091003 – Published 22 September 2003
PDFHTMLExport Citation
Abstract
Authors
Article Text
  • INTRODUCTION
  • II. ENERGY DEPOSITION IN CRYSTAL AND…
  • ACKNOWLEDGEMENTS
    • References

    Abstract

    The characteristics of the electron-photon showers initiated by 2 to 10 GeV electrons aligned along the ⟨111⟩ axis of tungsten crystals are compared with those for the amorphous tungsten. In this energy range, as known, the positron yield at the optimal target thicknesses is larger in a crystal case only by several percent. However, the amount of the energy deposition in a crystal turns out to be considerably (by 20%–50%) lower than in an amorphous target providing the same positron yield, while the peak energy-deposition density is approximately of the same magnitude in both cases.

    • Figure
    • Figure
    • Figure
    • Figure
    • Figure
    • Received 1 July 2003

    DOI:https://doi.org/10.1103/PhysRevSTAB.6.091003

    This article is available under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

    Authors & Affiliations

    X. Artru1, R. Chehab2, M. Chevallier1, and V. Strakhovenko3,*

    • 1IPN-Lyon, IN2P3/CNRS et University Claude Bernard, 69622 Villeurbanne, France
    • 2LAL, IN2P3/CNRS et University de Paris-Sud, BP 34-91898, Orsay cedex, France
    • 3Budker-INP, 11 Ac. Lavrentyeva, 630090, Novosibirsk, Russia

    • *Corresponding author. Email address: v.m.strakhovenko@inp.nsk.su

    Article Text

    Click to Expand

    References

    Click to Expand
    Issue

    Vol. 6, Iss. 9 — September 2003

    Reuse & Permissions
    Author publication services for translation and copyediting assistance advertisement

    Authorization Required

    Log In
    Other Options
    ×

    Images

    • Figure 1
      Figure 1
      Mean energy of the initial electron in units of the incident beam energy, E0=10   GeV (a), and fractions of the total energy carried correspondingly by all charged particles and photons (b). Solid lines are for amorphous and dashed lines for crystal tungsten target. The incident beam is directed along the ⟨111⟩ axis of the crystal.Reuse & Permissions
    • Figure 2
      Figure 2
      Energy deposition rate per charged particle (a) and the logarithmic increment (b) in tungsten targets at E0=10  GeV. Solid lines are for amorphous and dashed lines for crystal targets.Reuse & Permissions
    • Figure 3
      Figure 3
      Fraction of energy ΔEdep(z)/E0 deposited in z slices (a) and number of accepted positrons as a function of the deposited energy Edep/E0 (b) at E0=2  GeV (curves 1), 6.2 GeV (curves 2), and 10 GeV (curves 3). Solid lines are for amorphous and dashed lines for crystal targets.Reuse & Permissions
    • Figure 4
      Figure 4
      (a) Mean positron energy (in MeV, upper curves) and transverse momentum (in MeV/c, lower curves); (b) beam spot area development. Incoming energies are E0=2  GeV (curves 1), 6.2 GeV (curves 2), and 10 GeV (curves 3). S0 corresponds to the incident beam. The straight line y=1 on (b) is drawn to guide the eye. Solid lines are for amorphous and dashed lines for crystal targets.Reuse & Permissions
    • Figure 5
      Figure 5
      (a) Energy-deposition density in the internal cylinder, versus the depth, at indicated initial energies; (b) transverse distribution of the energy-deposition density at z=4.0X0. Solid lines are for amorphous and dashed lines for crystal targets.Reuse & Permissions
    ×

    Sign up to receive regular email alerts from Physical Review Accelerators and Beams

    Reuse & Permissions

    It is not necessary to obtain permission to reuse this article or its components as it is available under the terms of the Creative Commons Attribution 3.0 License. This license permits unrestricted use, distribution, and reproduction in any medium, provided attribution to the author(s) and the published article's title, journal citation, and DOI are maintained. Please note that some figures may have been included with permission from other third parties. It is your responsibility to obtain the proper permission from the rights holder directly for these figures.

    ×

    Log In

    Cancel
    ×

    Search

    Article Lookup

    Paste a citation or DOI
    Enter a citation
    ×