ICFA neutrino Panel

1. ICFA neutrino Panel

2. ICFA neutrino panel History

3. 2006 • European community carrying out the first European Strategy exercise; • International Scoping Study for a future Neutrino Factory and super-beam facility in full swing • First study to review and compare on equal footing super-beam, beta-beam and Neutrino Factory • The EUROnu Design Study being prepared • I wrote to ICFA to suggest that ICFA had a role in promoting cooperation in the development of the neutrino programme

4. 2006 (continued)

5. Eu strategy Snowmass

6. 2012: February • ICFA requested briefing on the International Design Study for the Neutrino Factory • Presentation included: • Review of long-baseline programme; • Status of IDS-NF and EUROnu: • And accelerator R&D work; • Summary of the conclusions of the ECFA neutrino panel • Asked whether ICFA had a role, perhaps as an “incubator” of the future long-baseline neutrino programme

7. Daya Bay and RENO:

8. Standard Neutrino Model: • Exciting new data! • Discovery of leptonic CP-violation is possible: • Best chance at the Neutrino Factory • Increases motivation for precision determination of the parameters and search for “non-standard effects” Fogli, Lisi, Marrone, Montanino, Palazzo, Rotunno arXiv:1205.5254v3

9. 2012: July • ICFA requested briefing on role of Neutrino Factory now that θ13 is known to be large

10. Elements of a staged programme: • Large value of θ13, makes it likely that the next generation long-baseline experiments will determine the neutrino mass hierarchy; • However, sensitivity to CP violation will be limited; • In the first instance, a combination of long-baseline (wide-band beam) experiments (e.g. LBNE/LBNO) and short baseline experiments (e.g. T2HK) may offer an attractive way forward: • In such an approach: • CP reach is limited by systematic effects; • Hints of CP violation would require follow up by the Neutrino Factory. • The Neutrino Factory is the facility of choice; • Consensus: • Will be required to:, • Complete the Standard Neutrino Model and to test whether it is a good description of nature • But, stored muon beams have not yet been shown to be capable of serving a world-class neutrino programme: • Require to push through R&D and complete IDS-NF, considering an incremental implementation in parallel; and • Establish a first, realistic, scientifically first-rate neutrino experiment based on a stored muon beam

11. 2012: July • ICFA requested briefing on role of Neutrino Factory now that θ13 is known to be large • Presentation: • Explained opportunity (leptonic CP violation); • Argued that: • ICFA has a role in creating the conditions for competition moderated by cooperation informed by “enlightened self-interest”

12. 2012: September

13. Schedule: • Next ICFA meeting: • February 2013 • Desirable to have membership ready to propose to ICFA by Christmas 2012

14. ICFA neutrino panel ICFA neutrino panelsteps taken

15. Contacts made: • Americas: • Leaders/spokespeople in USA and Canada contacted: • Support for initiative • Suggestions for how to procede • Asia: • Spokespeople of T2K contacted; • Recognition (and I think interest in and support for) initiative • Takashi Kobayashi will discuss with Director General KEK • INO spokesman contacted • Europe …

16. Europe: • Contacted the Steering Group that prepared the European Neutrino Town meeting and the input to the Strategy Update from the European Neutrino Community • Feedback positive • Contacted Manfred Krammer, ECFA Chair, to: • Ask how ECFA could be involved in: • The process of setting up the panel; • Ensuring that the work of the panel remains aligned with the European Strategy