EURO n Beta Beams Kick-off meeting 05-02-08

1. EUROnBeta BeamsKick-off meeting 05-02-08 Elena Wildner, CERN EUROnu, Elena Wildner, CERN, 05/02/2008

2. Outline • FP6 baseline • Some important issues • FP7 • Contributions from participants • Timeline • Deliverables • Milestones EUROnu, Elena Wildner, CERN, 05/02/2008

3. Outline FP6 baseline Some important issues FP7 Contributions from participants Timeline Deliverables Milestones 05/02/08 3 EUROnu, Elena Wildner, CERN, 05/02/2008

4. Beta Beam Baseline Scenario Ion production Neutrino source Acceleration Beam to experiment Proton Driver Acceleration to final energy PS & SPS Ion productionISOL target & Ion source Decay ring Br = 1500 Tm B = ~6 T C = ~6900 m Lss= ~2500 m 6He: g = 100 18Ne: g = 100 SPS Neutrino Source Decay Ring Beam preparationECR pulsed Existing!!! Ion accelerationLinac 93 GeV PS . Acceleration to medium energy RCS, 1.5 GeV 8.7 GeV Detector in the Frejus tunnel EUROnu, Elena Wildner, CERN, 05/02/2008 4

5. FP6 – Accelerator Chain Beta Beam baseline parameters A. Fabich, E. Wildner / CERN RCS preliminary design – A. Lachaize, A. Tkatchenko / CNRS/IN2P3/IPN Orsay Decay ring preliminary design - A. Chancé and J. Payet / CEA/DSM/DAPNIA Preliminary study of the collimation and absorbers in the Decay Ring – E. Wildner, A. Fabich, M. Stockner / CERN Assymetric bunch merging in the Decay Ring – S. Hancock, M. Benedikt / CERN PS activation and collimation studies M. Kirk, P. Spiller, J. Stadlmann, C. Omet / GSI Darmstadt Decay losses along the accelerator chain of the beta beam A. Fabich, M. Benedikt / CERN

6. FP6 – Production • Production of 6He and 18Ne for EURISOL DS - T. Stora and EURISOL task 3 participants / CERN + CEA Saclay • 6He from a BeO target surrounding a n converter – optimization N. Thiollière and coworkers CEA Saclay • 18Ne from a MgO target - Factor 5 below requirements • Direct production, alternative production methods – M. Loiselet S. Mitrofanov / UCL Laboratoire du Cyclotron • 7Li (p,2p)6He • 16O (3He,n) 18Ne – Interesting, large targets and intense 3He beams • Ionization and cooling ring - C. Rubbia, A. Ferrari, Y. Kadi, V. Vlachoudis et al. / CERN • Novel ideas with new baseline isotopes 8Li and 8B • A general concept - could be used beyond EURISOL and beta beams • Ionization and bunching - T. Lamy and T. Thuillier/ LPSC Grenoble • 60 GHz ion source design – EURISOL task 9 • An accumulation ring at low energy – A. Källberg M. Lindroos / MSL and CERN

7. EURISOL DS task 12:“Beta Beam aspect” M. Benedikt and M. Lindroos

8. Outline FP6 baseline Some important issues FP7 Contributions from participants Timeline Deliverables Milestones 05/02/08 8 EUROnu, Elena Wildner, CERN, 05/02/2008

9. Ion production 6He (tungsten or liquid metal as neutron converter and BeO as target) 18Ne (spallation, direct on magnesium oxide) Short-fall of ions if classical methods used Proposal to produce other isotopes Isotopes like 8Li and 8B better Higher Q -> higher energy neutrinos 05/02/08 9 EUROnu, Elena Wildner, CERN, 05/02/2008

10. Ion acceleration Linac Multiple charge state acceleration? Accumulation in the PS of 20 RCS bunches PS2? SPS, new 40 MHz and 200 MHz systems give 10 ns long bunches into the decay ring. 05/02/08 10 EUROnu, Elena Wildner, CERN, 05/02/2008

11. Neutrino production Decay ring 7000 m 36 % straight sections, 5T superconducting magnets (6He up to g=150) Stacking (dilated life-time) by assymetric merging Do we need it? If we can relax on the dutyfactor we can fill the complete Decay Ring and we can use a ”barrier bucket filling scheme” (ref. FNAL anti-protons) Collimation and absorption of decayed ions 05/02/08 11 EUROnu, Elena Wildner, CERN, 05/02/2008

12. Outline FP6 baseline Some important issues FP7 Contributions from participants Timeline Deliverables Milestones 05/02/08 12 EUROnu, Elena Wildner, CERN, 05/02/2008

13. New ions: Production Ring (CERN) • Gas target or liquid metal film target? • Supersonic gas target • Argonne National lab. liquid metal film target? • FFAG or ”classical” ring lattice Production Ring “Beam Cooling with ionisation losses” C. Rubbia, A. Ferrari, Y. Kadi, V. Vlachoudis EUROnu, Elena Wildner, CERN, 05/02/2008

14. ECR (LPSC, GHMFL) 60 GHz ECR for bunching studies 6He and 18Ne contunued for reach of high efficiencies. Study and first tests on bunching 8Li and 8B Ion source technology (magnetic structures) 05/02/08 14 EUROnu, Elena Wildner, CERN, 05/02/2008

15. Collection Device ( UCL, INFN) Prototype of production ring collection device extraction efficiency of 8Li measured 8B extraction tested on-line Release efficiencies Production cross sections (theory & experiment) 05/02/08 15 EUROnu, Elena Wildner, CERN, 05/02/2008

16. Decay Ring ( CERN, CEA) New baseline scenario for new beta emmitters Superconducting Dipoles Magnet Protection Collimation Revise stacking process 05/02/08 16 EUROnu, Elena Wildner, CERN, 05/02/2008

17. Decay Ring, stacking ( CERN) He Ne Stacking (dilated life-time) by assymetric merging. If we can relax on the dutyfactor we can fill the complete Decay Ring and we can use a ”barrier bucket filling scheme” (ref. FNAL anti-protons)” 05/02/08 17 EUROnu, Elena Wildner, CERN, 05/02/2008

18. Other contributions Supersonic Gas injector (PPPL) Alternative ION collection devices (ANL) Beam tracking code ACCIM (TRIUMF) Analysis and theoretical work on results at LPSC (The institute of Applied Physics in Nizhny Novgorod) Princeton Plasma Physics Laboratory Laboratoire de Physique Subatomique et de Cosmologie de Grenoble 05/02/08 18 EUROnu, Elena Wildner, CERN, 05/02/2008

19. Outline FP6 baseline Some important issues FP7 Contributions from participants Timeline Deliverables Milestones 05/02/08 19 EUROnu, Elena Wildner, CERN, 05/02/2008

20. FP7 EUROnu, Elena Wildner, CERN, 05/02/2008

21. Staff effort EUROnu, Elena Wildner, CERN, 05/02/2008

22. Kick-off FP7 WP4 beta beams A kick-off meeting will be organized in spring 2008 Thanks to: P.Delahaye M.Lindroos A.Fabich and M.Benedikt! EUROnu, Elena Wildner, CERN, 05/02/2008