Beta-beam: production and acceleration of intense radioactive beams for neutrino physics

Among the dierent options studied at CERN for physics beyond LHC, facili-
ties studying neutrino physics by the observation of neutrino oscillations are being
studied. -beam is one of these with the particularity of producing pure
avor
electron-neutrino and electron-antineutrino beams from the postacceleration of in-
tense beams of -decaying isotopes. The unpredecented intensities that are required
for this facility to be competitive with the others (Superbeam and Neutrino Factory)
have triggered a common questionning with next generation nuclear facilities for the
development of high power targetry and high eciency processes for the production,
the ionization and the postacceleration of radioactive isotopes. The dierent solu-
tions that have been envisaged so far are on the one hand standard ISOL production
methods for 6He and 18Ne and on the other an innovative method for 8Li and 8B
where the primary beam which hits a stripper target is recycled and reaccelerated in
a ring. Ecient ECR ionization, fast acceleration and accumulation techniques have
been imagined to maximize the decay losses in the decay ring where dierent types
of collimations are supposed to catch the high energy products. This seminar shall
review these dierent aspects emphasizing their connexion to the issues of intense
radioactive ion beam production and postacceleration at present and future ISOL
facilities.