1. Summary of Nufact-03 Alain Blondel NuFact 03 5th International Workshop on Neutrino Factories & Superbeams Columbia University, New York 5-11 June 2003 Highlights and personnal impressions part III acelerator http://www.cap.bnl.gov/nufact03/

2. Summary of Nufact-03 Alain Blondel E kin Time Neutrino Factory: the Japanese Scenario now more thoroughly simulated based on FFAG physics all the way: low E muons g-2 muons, low energy NuFact, 20 GeV NUFACT… Other notable difference wrt US and EU scheme Energy for capture is higher (0.4 +- 0.2 kinetic GeV) (50 GeV proton source + optimization) SUPPORTED! COOLING is not necessary…. but brings a factor in intensity of >> 2! Japan (Osaka & KEK) are active members of MICE!

3. Summary of Nufact-03 Alain Blondel Muon Physics Programs & Staging Scenario zPion Capture (MECO) yMuon LFV zNeutrino Factory zMuon Collider zMuon Factory-II (PRISM-II) yMuon EDM ◆ High Power Proton Driver  Muon g-2 zMuon Factory (PRISM) yMuon LFV yMuon g-2 Physics outcomes at each stage

4. Summary of Nufact-03 Alain Blondel Yoshi Mori NB: a standard cyclotron would be MUCH smaller and inexpensive but would have much smaller acceptance and could not be scaled up to higher energies.

5. Summary of Nufact-03 Alain Blondel Yoshi Mori

6. PRISM=Phase Rotated Intense Slow Muon source PRISM zSpecifications ymuon intensity: 10 11 ~10 12 /sec ycentral momentum: 67-120 MeV/c ymomentum width: 3 % (<--- 30 % ） x phase rotation PRISM ring construction has been approved. PRISM ring construction has been approved. approx 5 M$

7. Summary of Nufact-03 Alain Blondel US MC (Neutrino Factory and Muon Collider collaboration) highlights *** target studies already advertised. mercury jet in beam mercury jet in B field to get both is a problem: where and how????  JHF / Isolde… ***RF studies in magnetic fields Important for MICE (rf noise in spectrometer) Important for NUFACT (cooling channel with high emittance muon beam going through RF while being contained in magnetic field (phase rotation or cooling) studies so far with 800 MHz, construction of 200 MHz cavity now started! nice study of cooling in gas H2 filled cavities. (R. Johnson) *** replace induction linacs with RF phase rotation (Neuffer) (cost saving!) *** cooling rings works (on paper)! main problem : the injection and ejection kicker

8. Summary of Nufact-03 Alain Blondel US MC (Neutrino Factory and Muon Collider collaboration)

9. Summary of Nufact-03 Alain Blondel sizeable improvement in the level of dark current using Be windows

10. Summary of Nufact-03 Alain Blondel

11. Kicker studies (Palmer)

12. Summary of Nufact-03 Alain Blondel TOWARDS WORLD STUDY III Rob Edgecock took initiative (triggered by MUG) to initiate a ‘world study III … trigger is EU FP6 design study request. … all three regions agree to collaborate. Aim is: 1. Design Report by LHC start up. 2. reduce cost of neutrino factory by factor of 2. steering group formed etc….

13. Summary of Nufact-03 Alain Blondel MICE  Experiment passed International Peer Review Panel successfully ‘strongly recommends approval’  Experiment under funding review in the UK: [10 M£ or 15 M£] this means we will be going around looking for cryogenics, RF power sources, beam magnets, etc…  RAL management has authorized construction work to begin in the experimental hall at RAL MICE IS HAPPENING!

14. Summary of Nufact-03 Alain Blondel  - STEP I: 2006 STEP II: summer 2006 STEP III: winter 2007 STEP IV: spring 2007 STEP V: fall 2007 STEP VI: 2008 If funding is adequate, the following sequence of events can be envisaged:

15. Summary of Nufact-03 Alain Blondel first results from miniboone first results from MUSCAT! theta13 prospectives (reactor proposals!) the issue of degeneracies beta beam getting close in performance to neutrino factory?! Nufact: death of bow-tie machine part: MICE strongly recommended – in approval path status of target status of RF cavity studies status of accelerator design FFAG!!!! Cooling ring!!!! to cool or not to cool? cost saving hopes WORLD STUDY III synergies: emphasis on low energy muon and high intensity physics personnal reflexions: Europe’s strengths two avenues for Europe: when should we chose? NUFACT03 Highlights