1. Alain Blondel -- After the ISS -- What did ISS achieve? 1. Established a « baseline » for the accelerator study 2. Rejuvenated simulation and study of Neutrino Factory detectors, established « baselines »; connected detector technologies (NUFACT, superbeam and  Beam) 3. Boosted the work on comparison between facilities on equal footing. 4. addressed fundamental issues of experimental nature (matter effects, LE cross-sections, flux control etc.) NB: caution about « baseline »: can be either -- choice on which further efforts, engineering, costing and R&D should concentrate -- ‘default assumption’ with respect to which new ideas can be compared (detectors) -- choice to be used in defining interfaces with other systems (accelerator)

2. Alain Blondel NUFACT Accelerator baseline proton driver parameterValue Energy (GeV)10 ± 5 Beam power (MW)4 Repetition rate (Hz)  50 No. of bunch trains3,5 a) Bunch length, rms (ns)2 ± 1 Beam duration b) (  s)  40 a) Values ranging from 1–5 possibly acceptable. b) Maximum spill duration for liquid-metal target. NuFact ParameterValue Target+captureL Hg+ 20T solenoid phase rotation and bunching coolingyes stored muon energy upgradable to 20GeV 40GeV trains of both signs of muons separated by 100ns decays per straight angular divergence 10 21 /yr 0.1/  RF Goals achieved!

3. Alain Blondel NUFACT detectors baseline distance detector 13000+-1000 km distance detector 27500 +- 500 km detector 1largest MIND 1) (100 kton) 4cmFe/1cm scint res. 1cm + ECC 5-10 kton (Silver) detector 2MIND (30 kton) matter density uncertainty +- 2% effective muon selection threshold ~3 GeV (actual analysis to be used) beyond the baseline to be investigated large magnetic volume for Larg, TASD, MECC (Platinum) 1) Magnetized Iron Neutrino Detector MIND new selection old selection LAr GAr B≈ 0.1  1 T LHe HT c coil? hep-ph/0510131 Frascati, 2005

4. Alain Blondel this minimal 3 family picture plots and similar plots within and beyond the minimal picture will continue to be refined and clarified as progress is made by proponents of the various options CHOICE will depend on --   --cost --timescale PRELIMINARY

5. Alain Blondel EP2010: « pursue an internationally coordinated, staged program in neutrino physics » CERN-SG: Studies of the scientific case for future neutrino facilities and the R&D into associated technologies are required to be in a position to define the optimal neutrino programme based on the information available in around 2012 ; Council will play an active role in promoting a coordinated European participation in a global neutrino programme. Towards a high-intensity neutrino programme

6. Alain Blondel 2010 will be a time of major decisions in particle physics LHC will be completed first results will appear ILC GDE  It is crucial that infrastructure needed for future neutrino expts be on the map => although 2012 is the eventual target date we should be sure to have interim reports by 2010. TARGET DATE I 2010 Barry Barish, CERN SPC sept05 ILC

7. Alain Blondel 1. a neutrino factory accelerator design study is really needed. This is also true of the beta beam and of the superbeam options 2. For each option, significant investment in hardware R&D and engineering design is required for a Conceptual Design Report (CDR) to be produced. 3. also needed is a performance/feasibility study of neutrino factory detectors and of non-magnetic detectors for superbeam and beta-beam 4. A more global physics group for comparison of options is highly desirable. 5. Keep the neutrino community coherent (role of NUFACT workshops!) 6. Strong transverse technological and scientific links between the various studies e.g. 4 MW proton driver and target area detector technologies and test beam area: …

8. Alain Blondel ISS--> IDS aspirational time line: ISS report: end of 2006 will include a description of the R&D and ressources necessary to produce InterimDesignReport in 2010 and CDR in 2012 Next « ISS » meeting second half of february 2007 19-21 feb @ CERN 2006-2007 preparation of funding proposals Review of where we stand at NUFACT07 mid-2008 (NUFACT08) funded engineering phase begins 2010 IDS interim report 2012 CDR Meanwhile a European Oversight Committee should be put in place to coordinate neutrino-beam requests.

9. Alain Blondel Regional Oversight Committees Nufact study Accelerator Detectors Physics Betabeam study Accelerator Detectors Physics Superbeam study (or studies) Accelerator Detectors Physics Neutrino Oscillation Physics Working Group -- exact structure of each study to be decided by proponents -- Regional Oversight Committees will possibly converge to a single international committee for a future precision neutrino facility

10. Alain Blondel Nufact study Accelerator Magnetic detectors Physics Betabeam study Accelerator Detectors Physics Superbeam study (or studies) Accelerator Detectors Physics NUFACT WORKSHOPS 1/yr Neutrino Oscillation Physics Working Group