1. R.G. 7/09/20101 Options for neutrinos

2. R.G. 7/09/20102 Conventional beam from the SPS (1/3) Neutrinos using the SPS Nominal CNGS 732 km baseline from CERN to Gran Sasso (Italy) [Elevation of 5.9°] Far detectors: OPERA (1.21 kt), Icarus (600 t) Commissioned in 2006, operational since 2008 Proton beam characteristics: 2x 2.4 · 10 13 p/p at 400 GeV every 6 s 4.5· 10 19 pot/year 2 extractions separated by 50 ms Beam pulse duration: 10.5  s Improvement with the upgraded injectors?

3. R.G. 7/09/20103 Conventional beam from the SPS (2/3) Neutrinos using the SPS

4. R.G. 7/09/20104 Performance range: 2 – 4 x flux for CNGS Conventional beam from the SPS (3/3) Neutrinos using the SPS (>2018) To be further studied

5. R.G. 7/09/20105 FACTORY with SPL-based proton driver (1/4) FACTORY with SPL-based proton driver (1/4) SPL-based 5 GeV – 4 MW proton drivers have been designed [SPL + 2 fixed energy rings (accumulator & compressor)] which meet these requirements References: – Feasibility Study of Accumulator and Compressor for the 6-bunches SPL-based Proton Driver / M. Aiba, CERN-AB-2008-060 – A first analysis of 3-bunches and 1-bunch scenario for the SPL-based Proton Driver / M. Aiba, CERN-AB-Note-2008-048-BI – Beam Stability in the SPL Proton Driver Accumulator for a Neutrino Factory at CERN / E. Benedetto, http://nufact09.iit.edu/wg3/wg3_benedetto-splstability.ppt, to be publishedhttp://nufact09.iit.edu/wg3/wg3_benedetto-splstability.ppt – SPL-based Proton Driver for a Neutrino Factory at CERN, M. Aiba, E. Benedetto, R. Garoby, M. Meddahi, poster nb.25 (this workshop) Neutrinos with the “High power” SPL

6. R.G. 7/09/20106 FACTORY with SPL-based proton driver (2/4) FACTORY with SPL-based proton driver (2/4) Neutrinos with the “High power” SPL Accumulation Duration = 400  s Compression t = 0  s t = 12  s t = 24  s t = 36  s etc. until t = 96  s Accumulator [120 ns pulses - 60 ns gaps] SPL beam [42 bunches - 21 gaps] Compressor [120 ns bunch - V(h=3) = 4 MV] Target [2 ns bunches – 6 times]

7. R.G. 7/09/20107 from M. Aiba FACTORY with SPL-based proton driver (3/4) FACTORY with SPL-based proton driver (3/4) Neutrinos with the “High power” SPL

8. R.G. 7/09/20108 from M. Aiba Neutrinos with the “High power” SPL FACTORY with SPL-based proton driver (4/4) FACTORY with SPL-based proton driver (4/4)

9. R.G. 7/09/20109 MUON PRODUCTION TARGET MUON ACCELERATORS MUON STORAGE RING SPL ACCUMULATOR & COMPRESSOR Neutrino Factory at CERN Neutrinos with the “High power” SPL “Proof of principle” [obsolete Factory design]

10. R.G. 7/09/201010 Only the accumulator is needed for a low energy superbeam Neutrinos with the “High power” SPL Low Energy Superbeam with SPL-based Proton Driver

11. R.G. 7/09/201011 ISOL production method at 1-2 GeV (200 kW) [Studied within EURISOL Design Study (FP6)] Data from E. Wildner and T. Stora IonProduction rate (estimate) Production schemeMissing factor 6 He 2-3  10 13 /s 1-2 GeV proton @ 200 kW - with converterOK 18 Ne < 8  10 11 /s 1-2 GeV proton @ 200 kW - without converter >20 Alternative scheme with ~70 MeV protons under study (T. Stora) Neutrinos with the “High power” SPL  beam Facility with SPL-based Proton Driver Close to LP-SPL capability

12. R.G. 7/09/201012 Conventional beam with PS2 Neutrinos with a new PS PS2 beam characteristics Dimensioned for the LHC upgrade Simple scaling to get the values for SPS in fixed target mode (with 5 turn ejection): 1· 10 14 p/p at 50 GeV every 2.4 s (~330 kW) ~4· 10 20 pot/year (10 7 s) Beam pulse duration: 4.2  s  A new design is needed if a higher flux is required.

13. R.G. 7/09/201013 Final words

14. R.G. 7/09/201014 Final words CERN involvement in the study of future Neutrino Facilities is limited. Present commitments in EUROnu and EuCARD (Neu2012) are already difficult to fulfill. Proposals for additional involvements are in preparation: Neutrino Factories: Assembly and operation of a test place for high RF accelerating field in a strong magnetic field Conventional neutrino beams: WP within DS on the study of proton sources for future neutrino beams Beta beams: ?  bottleneck (manpower)  need for setting priorities