• F. Poirier, I. Chaikovska, O. Dadoun, P. Lepercq, R. Roux, A. Variola
  LAL, Orsay
• R. Boni, S. Guiducci, M.A. Preger, P. Raimondi
  INFN/LNF, Frascati (Roma)
• R. Chehab
  IN2P3 IPNL, Villeurbanne

Providing a high quality and sufficient high current positron beam for the ultra high luminosity B-factory SuperB is a major goal. In this paper a proposition for positrons production and capture scheme based on low energy electrons up to1 GeV is presented. For this technique, several types of flux concentrator used to capture the positrons are being studied. The following accelerating section bringing the positrons up to 280 MeV and the total yield for L-band and S-band type accelerators are given. Also the result of the benchmark between ASTRA and a LAL code based on Geant4 toolkit simulation is discussed.

• O. Dadoun, I. Chaikovska, P. Lepercq, F. Poirier, A. Variola
  LAL, Orsay
• R. Chehab
  IN2P3 IPNL, Villeurbanne
• L. Rinolfi, A. Vivoli
  CERN, Geneva
• V.M. Strakhovenko
  BINP SB RAS, Novosibirsk
• C. Xu
  IHEP Beijing, Beijing

The CLIC study considers the hybrid source using channeling as the baseline for unpolarised positron production. The hybrid source uses a few GeV electron beam impinging on a crystal tungsten target. With the tungsten crystal oriented on its < 111 > axis it results an intense, relatively low energy photon beam due mainly to channeling radiation. Those photons are then impinging on an amorphous tungsten target producing positrons by e⁺e^- pair creation. The downstream capture section is based on an adiabatic matching device and a 2 GHz pre-injector linac. The resulting studies are presented here.

Slides