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Summary WG3

Summary WG3. NuFact ’ 11. Elena Wildner, Makoto Yoshida and Alex Bogacz. Elena Wildner, Alex Bogacz and Makoto Yoshida. NuFact ’ 10 NuFact ’ 11. 1) Is Project X a suitable proton driver for the Neutrino Factory? Yes it is; A complete scheme emerged including stripping injection

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Summary WG3

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  1. Summary WG3 NuFact’11 Elena Wildner, Makoto Yoshida and Alex Bogacz Elena Wildner, Alex Bogacz and Makoto Yoshida Summary, WG3, NuFact 11, Geneva

  2. NuFact’10 NuFact’11 1) Is Project X a suitable proton driver for the Neutrino Factory? Yes it is; A complete scheme emerged including stripping injection 2) What is the path for solving the problem of operating high gradient RF is strong magnetic field? Ongoing, vigorous experimental program under way at MuCool and MTA at Fermi at LBNL (first experimental tests coming out) 3) Does energy deposition pose SC solenoid shielding problem for presently proposed proton drivers? Challenging problem, robust engineering solution being worked out. 4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings? Working concept under study, specific components being modeled and optimized. 5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG? EMMA demonstrated device feasibility. Conceptual solution is being studied 2 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  3. NuFact’10 NuFact’11 6) Can Scaling FFAG be used in other-then-ring configurations? Complete prototype lattices designed for new applications e.g. prototype decay ring for VLENF 7) Is there a synergetic path from the Neutrino Factory to MC? A clear path emerged and being developed within MAP. Usage of components and techniques developed for NF-IDS. 8) Target handling for Multi MW targets ? 1 MW target handeling needs to be addressed 9) Proposed target systems are many, convergence? Multiple designs required; different requirements for various applications 10) Material property evolution with time (from radiation, strain & stress and temperature)? Appropriate material studies under way. 3 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  4. NuFact’10 NuFact’11  11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement 12) Verification of the 18Ne production for beta beams? Tested experimentally. 13) Modeling of pion production complete? Agreement between two models/codes (MARS and FLUKA) consistent within 10-20% with the HARP data 14) How serious is power deposition in the structures after/around the target (horn, solenoids…)?  Quite significant. They are modelled accurately; adequate shielding provided 15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections) VLENF conceptual design with large acceptance decay ring, Scaling FFAG option 4 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  5. EUROnu Objective: Compare SuperBeam Beta Beam Neutrino Factory Performance/Cost CERN Stategy Group will get Result Take Decision? 5 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  6. Nufact (workshop) Objective: Work on and discuss Neutrino physics & Facilities This year: Panel Discussion with “management” Result: we got back a number of questions from panel… Answers from Acc. Phys., see later 6 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  7. Super Beam 7 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  8. Super Beam 8 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  9. Super Beam 9 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  10. Beta Beam 10 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  11. EUROnu physics T2K & Minos : Theta13 large!!!

  12. Neutrino Factory Studied in EUROnu (Europe) and IDS (International) IDS Report is out 12 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  13. Garoby, Gollwitzer, Thomason Proton driver: IPAC10: THPD074,MOPEC049,WEPE098 • Challenges: • High power; short proton-bunch lengthat ~10 GeV • IDS-NF approach: • Consider two ‘generic’ options: • LINAC: • Possible development option for SPL (CERN) or Project-X (FNAL) • Requires accumulator &compressor rings • Rings: • Development option for J-PARC or RAL or possible ‘green-field’ option • Requires bunch compression

  14. Neutrino Factory Front End 700 MeV/c • Drift from target ~80m • Beam lengthens • Buncher (~33m) • N=10 • P0=233MeV/c, PN=154MeV/c • 330 → 235 MHz • V’= 0→9 MV/m • Rotator (~42m) • N=10.05 – • accelerate/decelerate bunches • 235→ 202 MHz,V’= 12 MV/m • Cooler (~80m) • 201.25 MHz, ASOL lattice • 15MV/m in rf cavities • LiH or H2 cooling • Captures both μ+ andμ- 0m -30m 30m 0 MeV/c Drift - 80m Δ=10λrf Bunch-110m v Rotate-155m Δ=10.05λrf 23 bunches Cool-240m

  15. The Proposed Lay-out • Re-use the old TT7 tunnel and cavern to house primary beam line and target station • Proton beam to be provide by CERN PS Near detector ACCELERATORS FOR THE PS NEUTRINO BEAM Far detector • 150t liquid argon TPC near detector in or near building 181 • 600t liquid argon TPC far detector in building 191 Rende Steerenberg, CERN Switzerland

  16. Experimental Requirements • Request: 2.5x1020 protons over 2 years • Based on neutrino production yield of 1980’s • Proton beam momentum ~ 20 GeV/c • Secondary νμ andνμ beam with Eν ≤ 2 GeV • The challenge lies in: • producing this extra amount of protons from the CERN PS • designing the optimum and reliable target and focussing system • Respect radiation limits for this surface facility ACCELERATORS FOR THE PS NEUTRINO BEAM Rende Steerenberg, CERN Switzerland

  17. Rende Steerenberg, CERN Switzerland

  18. Rende Steerenberg, CERN Switzerland

  19. 8) Target handling for Multi MW targets ? Multi MW targets feasible; two robust designs exist (NF, LBNE) Example for Frejus Superbeam: 21 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  20. 8) Target handling for Multi MW targets ? Multi MW targets feasible; two robust designs exist (NF, LBNE) C. Densham ss Question will remain till Nufact 12 22 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  21. 9) Proposed target systems are many, convergence? Yes, but multiple designs required; different requirements for various applications Target options for NF:Hg -jet target is the baseline but energy deposition in the magnet is too-high, magnet shielding need to be improved (under re-design).Metal-powder target and solid W bars (that can be exchanged between beam pulses) are studied as mitigation options in case the Hg-jet option energy deposition issue turn to be to difficult to solve.Aim of the feasibility study is to push the Hg-jet option to a realistic design and define if the options under study are a realistic replacement option of the Hg-jet. 23 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  22. 9) Proposed target systems are many, convergence? Multiple designs required; different requirements for various applications Superbeam to Frejus NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  23. 10) Material property evolution with time (from radiation, strain & stress and temperature)? Appropriate material studies under way. C. Densham NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  24. 3) Does energy deposition pose SC solenoid shielding problem for presently proposed proton drivers? Challenging problem, robust engineering solution being worked out. Degradation of superconductor, insulator, thermal conductor, structure etc by irradiation  some hints from COMET, ITER Increase inner shielding  3GJ stored energy Feasibility ? C, Densham Alternate target option with Low-Z? Low-Z  less neutrons

  25. 13) Modeling of pion production complete? Agreement between two models/codes (MARS and FLUKA) consistent within 10-20% with the HARP data Recent updates from NA61 (talks in WG2).

  26. ACTIVITY density in Bq/cm3 molasse concrete 14) How serious is power deposition in the structures after/around the target (horn, solenoids…)?  Quite significant. They are modelled accurately; adequate shielding provided 4MW Superbeam Horns • packed Ti target, 65%dTi • 4MW beam, 4horns, 200days of irradiation N. Vassilopoulos 4MW NF Solenoids Still >1MGy/year at downstream need investigation on downstream materials K. McDonald

  27. 11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement Existing machines: PS E. Benedetto Existing machines: SPS still needs studies, Less constrained SF helps 29 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  28. 11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement Decay Ring optimization good with higher SF, solutions exist for small theta13 30 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  29. 11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement ECR Source T. Lamy Efficiencies and beam parameters on the way 31 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  30. 11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement Solutions for theta 13 smaller exsist 32 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  31. 11) Will the Beta Beam be possible in the CERN Complex? Yes, the baseline beta beam is possible to implement Ion Production T. Stora 18 Ne under test 6He ok, operation feasable 33 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  32. 12) Verification of the 18Ne production for beta beams? Tested experimentally 18Ne Production was a serious show stopper 18 Ne under test NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  33. 1) Is Project X a suitable proton driver for the Neutrino Factory? Yes it is; A complete scheme emerged including stripping injection R. Garoby 35 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  34. 1) Is Project X a suitable proton driver for the Neutrino Factory? Yes it is; A complete scheme emerged including stripping injection 36 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  35. 2) What is the path for solving the problem of operating high gradient RF is strong magnetic field? Ongoing, vigorous experimental program under way at MuCool and MTA at Fermi (first experimental tests coming out) 37 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  36. 38 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  37. 39 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  38. 40 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  39. 4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings? Working concept under study, specific component being modeled and optimized. 41 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  40. 4) Do we have a working Injection/Extraction scheme for NS-FFAG Rings? Working concept under study, specific component being modeled and optimized. 42 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  41. 5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG? EMMA demonstrated device feasibility. Conceptual solution is being studied 43 Shinji Machida NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  42. Shinji Machida 44 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  43. 5) Is chromaticity correction sufficient to reduce the TOF problem for NS-FFAG? EMMA demonstrated device feasibility. Conceptual solution is being studied 45 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  44. 6) Can Scaling FFAG be used in other-then-ring configurations? Complete prototype lattices designed for new applications e.g. prototype decay ring for VLENF 46 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  45. 15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections) VLENF conceptual design with large acceptance decay ring, Scaling FFAG option 47 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  46. 15) Feasibility of mini-neutrino factory (low energy/intensity storage ring for short baseline measurement of cross-sections) VLENF conceptual design with large acceptance decay ring, Scaling FFAG option 48 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  47. 7) Is there a synergetic path from the Neutrino Factory to MC? A clear path emerged and being developed within MAP. Usage of components and techniques developed for NF-IDS. 49 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

  48. NufacF’11 NuFact’12 (new) 1) What combination of proton beam energy and bunch length is the best compromise for integrated muon beam intensity? 2) Important to update the acceleration system of the beta beams from the source to the decay Ring 3) The PS (space charge, instabilities) 4) The SPS (instabilities and RF) 5) Impact of possible high 13on the neutrino facilities, design parameters 6) Operating high gradient normal conducting RF rf cavities in strong magnetic field; gradient degradation, effects of intense ionizing radiation traversing gas? Ongoing, vigorous experimental program under way at LBNL and MTA at Fermi (first experimental tests coming out) 50 NuFact'11, E. Wildner, A. Bogacz, M. Yoshida

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