First Bulletin

### NuFact05 7th International Workshop on Neutrino Factories and Superbeams, Laboratori Nazionali di Frascati, (Rome) Italy

Aula Bruno Toushek (Auditorium)
21-26 June 2005

General Information

NuFact05 is the seventh annual Neutrino Factory workshop. This series of annual meetings is devoted to discussing the full physics potential of Neutrino Factories, Superbeams and Betabeams as well as the design and feasibility of the accelerator complex and the various detectors. The NuFact05 workshop starts on the morning of Tuesday June 21th and ends at lunch time on Sunday June 26, 2005. In conjunction with this workshop there will also be a summer school for students and other young scientist, the 4th International Summer School on Neutrino Factories and Superbeams,, which will take place in Capri, from the morning of Sunday June 12 to lunch time Monday Jun  20, 2005. Tranfer of lectures and students to Frascati will take place on that Monday afternoon.

The
general scientific background of NuFact consists of - the recent major discoveries that have proven that different flavors of neutrinos do oscillate into one another, providing the first clues of new physics beyond the standard model. They call for a complete determination of the neutrino mass splittings, of the neutrino mass hierarchy and of the neutrino mixing matrix (Pontecorvo-Maki-Nakagawa-Sakata matrix). Its yet-unknown third neutrino mixing angle $\theta_{13}$ will be precisely measured first, the ultimate goal being the measurement of its the CP violating phase d.   - recent developments of accelerator technology that are making possible to conceive of superior neutrino beams, based on the conventional concept of a pion decay tunnel,  as well as on the novel concept of a storage ring for longer lived high energy neutrino parents, for which the options of muons and radioactive ions are being investigated. All options rely on emerging technologies promising high-power proton accelerator beams of multi MegaWatt power and share the technical challenge of handling and exploiting efficiently this unprecedented high power.
The purpose of the Workshops is to bring together yearly the communities that in the different regions of the world work towards the
long term goal of constructing new superior accelerator-based neutrino facilities.   On the road that will lead us there, the present goal is to stimulate, plan and review the work necessary to prepare, after a comparison of options on a common basis of performance and cost , the proposal of a major accelerator-based facility for neutrino physics, before the end of the decade.       The Workshop returns to Europe in 2005, with the regular 3-year cycle, in a promising context of renewed consensus towards ambitious projects in the sector.  It wants therefore to provide also the opportunity of discussing the most effective specific road map for Europe in the area of accelerator neutrinos.

Scientific Program

The NuFact05 workshop consists of a mixture of plenary talks and parallel working group sessions. Possible topics for plenary presentations include:

- Physics of Massive Neutrinos,
- Solar Neutrino Results, KamLAND Results & Prospects,
- Prospects for \theta_{13} Measurements at Future Reactors,
- Long Baseline Neutrino Oscillation Experiments with Superbeams,
- Oscillation Neutrino Physics Reach at Neutrino Factories,
- Non-oscillation Neutrino Physics,
- Particle Physics with Intense Muon Beams,
- Application with Intense Muon Beams,
- Muon Collier prospects,
- Hadron Beam Physics at Highly Intense Proton machines,
- Applied Science with Highly Intense proton beams,
- Neutrino Factory R&D in the US, Europe and Japan,
- Beta Beam R&D,
- MICE,
- MUCOOL,
- MuSCAT,
- Targetry R&D,
- Neutrino Detector,
- Leptogenesis, and
- Neutrino and Cosmology.

There will be Working Group (WG) Sessions.
Their names are being defined but they are likely to resemble the organization adopted in 2004, where we had four Working Groups:

WG1: Neutrino Oscillation Physics
WG2: Neutrino Non-oscillation Physics
WG3: Machine Design and R&D
WG4: Intense Muon Physics

Workshop Site

The workshop will be held in the Laboratori Nazionali di Frascati, Italy, (www.lnf.infn.it).

Registration and Accommodation

Details of how to register for NuFact05 and reserve accommodation will have been posted on the NuFact05 web-site (http://www.lnf.infn.it/conference/nufact05/).

Correspondence

Questions concerning the workshop can be addressed to: nufact05@lnf.infn.it