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BETA-BEAMS

A. N. D. BETA-BEAMS. The beta-beam concept. LOW ENERGY BETA-BEAMS. The baseline scenario. The physics potential. Conclusions. Cristina VOLPE (IPN Orsay and Institut fuer Theoretische Physik Heidelberg). THE BETA-BEAM CONCEPT. CONVENTIONAL METHODS :.

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BETA-BEAMS

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  1. A N D BETA-BEAMS The beta-beam concept LOW ENERGY BETA-BEAMS The baseline scenario The physics potential Conclusions Cristina VOLPE (IPN Orsay and Institut fuer Theoretische Physik Heidelberg)

  2. THE BETA-BEAM CONCEPT CONVENTIONAL METHODS : Neutrinobeams are produced using the decay of pions and muons. P. Zucchelli, PLB 2002 THE BETA-BEAM CONCEPT : A novel method to produce neutrino beams based onbeta-decay. Lorentz boost Q 1/ high ADVANTAGES OF BETA-BEAMS : Pure ( or ) beams. Well known neutrino fluxes. Strong collimation. A NOVEL METHOD TO PRODUCE INTENSE, COLLIMATED, PURE HIGH ENERGY NEUTRINO BEAMS FROM BOOSTED RADIOACTIVE IONS. Cristina VOLPE

  3. THE CERN BASELINE SCENARIO Decay ring Brho= 1500 Tm B=5 T Lss=2500 m SPS Decay Ring SPL (2.2 GeV 2.3x1014 p/pulse) ISOL target & Ion source ECR PS Cyclotrons Fast cycling synchrotron BETA-BEMS WOULD : - USE CERN INFRASTRUCTURES, -NEED ION PROD. AND DECAY RING. Cristina VOLPE

  4. SPL ISOL Target + ECR Linac, cyclotron Fast cycling synchrotron PS and SPS Decay Ring Production, ionization, pre-bunching 20 KeV/u 1.0x1013 8.0x1011 ions/s 50 MeV/u 1.0x1012 4.1x1010 ions/bunch 300 MeV/u 1.0x1013 5.0x1011 ions/batch 139 GeV/u 55 GeV/u 2.0x1014 9.0x1012 ions in 4 10 ns long bunch 139 GeV/u 55 GeV/u 6He2+ 18Ne10+ 3ms 2.2 GeV for NuFact and Super Beam SPL USE 15 mA 15 ms 2.2 GeV For other users Beta-beam 3 mA 20 ms SPL COULD BE USED BY MANY USERS. Cristina VOLPE

  5. THE BETA-BEAM PHYSICS POTENTIAL Neutrino experiments : Measurement of the mixing angle Study of CP violation Geneve e m (+) m e (p+) e m (-) m e (p-) 130 km CP T Italy UNO 1 Mton Cerenkov Detector Astrophysics studies : Supernova neutrinos Proton decay A RICH PHYSICS PROGRAM ! Cristina VOLPE

  6. BENE (neutrino beams) NETWORK • GSI : • Helmuth Weick, Markus Steck, Peter Spiller, Oliver Boine-Frankenheim, R. Hollinger, B. Franzke • CEA : • Olivier NAPOLY, Jacques Payet, Jacques Bouchez • IN2P3 : • Cristina Volpe, Alex Mueller, Pascal Sortais, Laune Bernard, Antonio Villari • INFN : • Vittorio Palladino, Mauro Mezzetto, Alberto Facco, Andrea Pisent • UK : • Chris Prior, Marielle Chartier • CERN : • Mats Lindroos, Steven Hancock, Matteo Magistris, Simone Gilardoni, Fredrik Wenander, • Roland Garoby, Michael Benedikt,Ulli Koester • GENEVA University : • Alain Blondel • LOUVAIN-la-NEUVE : • Guido Ryckewaert, Thierry Delbar • UPPSALA : • Dag Reistad • ASSOCIATE : • Andreas Jansson, Rick Baartman Cristina VOLPE

  7. REFERENCES Moriond Workshop last March : ``Radioactive beams for nuclear physics and neutrino physics’’ Organizers : J. Bouchez, J. Aysto, Y. Blumenfeld, P. Butler, R. Garoby, H. Haseroth, M. Lindroos, M Mezzetto, A. Mueller, C. Volpe See http://beta-beam.web.cern.ch/beta-beam/. The original idea : P. Zucchelli, Phys. Lett. B 532(2002)166. The feasibility study: B. Autin, M. Benedikt, M. Grieser, S. Hancock, A. Jansson, M. Lindroos, S. Russenschuck, F. Wenander, CERN/PS 2002-078, to be published in Journal of Physics G. The physics potential : M. Mezzetto, hep-ex/0302007 to be published in Journal of Physics G. Cristina VOLPE

  8. CONCLUSIONS AND THE FUTURE The beta-beam concept is a novel method to produce pure, collimated and intense high energy neutrino beams by boosting radioactive ions.The beta-beam scenario uses CERN infrastructures and relies on existing technology. A rich physics program for neutrino physics and astrophysics would be addressed by sending beta-beams to a Megaton detector located at 130 km, in the underground Frejus laboratory. The feasibility study will be pursued in the future in the context of the BENE network for the high energy part. Synergy with other communities for the proton driver, ion Production and first acceleration steps (EURISOL). Cristina VOLPE

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