1. Beta-beam study group Letter of Intent beta-beam design study Mats Lindroos On behalf of the Beta-beam working group

2. Beta-beam study group CERN:  -beam baseline scenario PS Decay Ring Decay ring Brho = 1500 Tm B = 5 T L ss = 2500 m SPS ISOL target & Ion source SPL Cyclotrons, linac or FFAG ECR Rapid cycling synchrotron Nuclear Physics P. Zucchelli, Phys. Lett. B, 532 (2002) 166-172

3. Beta-beam study group Beta-beam Isotope production using the ISOL method with a proton driver of SPL type Bunching in high frequency ECR source Production and acceleration to 100 MeV/u already studied in EURISOL study –TARGISOL (U. Koester) Accumulation in low energy storage ring Acceleration to 300 MeV/u using fast cycling synchrotron, FFAG or cyclotron Acceleration to higher energies using existing CERN accelerators Injection and accumulation using newly developed scheme M. Benedikt and S. Hancock, CERN

4. Beta-beam study group Physics reach Combined with a Super Beam the beta-beam can successfully address CP violation for values of the mixing angle  13 as small as 1 degree With improvements on the isotope production it is possible that the beta-beam could become comparable to a neutrino factory In conjunction with the Super-beam, the beta-beam would also allow for tests on T and CPT in the neutrino sector M. Mezzetto, Proceedings of Nufact 02, London, 2002, hep-ex/0302007 and presentation at NUFACT03, New York, 2003

5. Beta-beam study group CERN to FREJUS Geneve Italy 130km 40kt  400kt CERN SPL @ CERN 2.2GeV, 50Hz, 2.3x10 14 p /pulse  4MW Now under R&D phase

6. Beta-beam study group UNO like detector in Frejus UNO: 400 KTon water Cerenkov detector Originally designed for proton decay studies and supernovae explosion observations A multipurpose observatory which will address several fundamental physics issues besides neutrino oscillations Chang Kee Jung, hep-ex/0005046

7. Beta-beam study group Moriond meeting Annual electro week meeting in Les Arcs Workshop on Radioactive beams for Nuclear and Neutrino Physics –Organizer: Jacques Bouchez, CEA, Saclay Many new ideas, among them: –Multiple targets for Ne production –ECR bunching (P. Sortais) –Ne and He in the decay ring simultaneously –Low energy beta facility GSI, GANIL and CERN (in close detector) C. Volpe, hep-ph/0303222, submitted to Phys. Rev. Let

8. Beta-beam study group Synergies Close synergy with the EURISOL project –Isotope production –Acceleration to 100 MeV/u Possible synergies with GSI up-grade plans for accelerator issues and decay ring Possible synergies with LHC heavy ion programme

9. Beta-beam study group Design study A full Technical Design Report could be achieved within five years Technical Preparatory work can immediately start on: –Target design –ECR source –High energy accumulation scheme Study and design work: –Accelerator issues –Decay ring –Superconducting dipole design –Simulation and design work to handle decay losses

10. Beta-beam study group Who are we? Signatures sorted in alphabetical order on institute and author Jacques Bouchez, Luigi Mosca, Olivier Napoly, Jacques Payet, Saclay, CEA, France Michael Benedikt, Peter Butler, Roland Garoby, Juan-Jose Gomez Cadenas, Steven Hancock, Pilar Hernandez, Ulli Koester, Mats Lindroos, Matteo Magistris, Thomas Nilsson, Fredrik Wenander CERN, Switzerland Alain Blondel, Simone Gilardoni Geneva University, Switzerland Oliver Boine-Frankenheim, Bernhard Franzke, Ralph Hollinger, Markus Steck, Peter Spiller, Helmuth Weick GSI, Germany Bernard Laune, Orsay, Alex Mueller, Orsay, Pascal Sortais, Grenoble, Antonio Villari, GANIL, Cristina Volpe, Orsay IN2P3, France Alberto Facco, Legnaro, Mauro Mezzetto, Padua, Vittorio Palladino, Napoli, Andrea Pisent, Legnaro INFN, Italy Thierry Delbar, Guido Ryckewaert Louvain-la-neuve, Belgium Marielle Chartier Liverpool university, UK Chris Prior RAL, UK Dag Reistad Uppsala university, The Svedberg laboratory, Sweden Associates: Rick Baartman, TRIUMF, Vancouver, Canada, Andreas Jansson, Fermi lab, USA

11. Beta-beam study group Conclusions All alternatives for the production of intense neutrino beams should be fully studied –Physics reach –Technical Design Report with reliable cost estimates The beta-beam facility, the super-beam and an UNO like detector is a very powerful tool for research in neutrino physics The organization and governance of the design study should come from ESGARD and EMCOG –Synergies with nuclear physics studies ESGARD recommends that the beta-beam forms part of either: –A unique neutrino beam design study (hosted by RAL) –The EURISOL design study (hosted by GANIL)