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“Beta Beams” produce collimated pure electron (anti-) neutrino beams by accelerating beta active isotope ions to high energies and having them decay in a race track shaped storage ring of 7 km circumference, the Decay Ring. This presentation will describe the Beta Beam based on CERN infrastructures and existing machines. CERN Beta Beams have been studied within the European framework Program FP6 (EURISOL) and, together with two other neutrino facilities, the Super Beam and the Neutrino Factory, within FP7 (EUROnu).
The isotope pair of choice for the Beta Beam is 6He and 18Ne. However, before the EUROnu studies 18Ne, could not be produced in rates that satisfy the needs for physics of the Beta Beam. Therefore, studies of alternative beta emitters, 8Li and 8B, with properties interesting for a Beta Beam have been proposed. The new idea was to 8Li and 8B using a small storage ring, in which the beam traverses a target, to create the 8Li and 8B isotopes. The studies of the storage ring, the target, the cross sections and the collection system made evident that, the yields of 8Li and 8B are not high enough to give the required rates for physics reach. Therefore, an alternative method of producing the 18Ne isotope has been developed and tested giving good production rates. A 60 GHz ECRIS type source prototype, the first in the world, was developed. The acceleration through a new Linac and a new RCS, the PS and the SPS will be discussed. The Decay Ring lattices for the 8Li and 8B have been developed and the lattice for 6He and 18Ne has been optimized to try to master the high intensity ion beam stability.
Conclusion of the studies will give some hints on future developments of neutrino facilities.
ATS Seminars Organisers: H. Burkhardt (BE), M. Modena (TE), T. Stora (EN)
Coffee / tea will be served after the seminar in room 30/7-012