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CERN Super-Beam (SPL)

CERN Super-Beam (SPL). CERN Super-Beam (SPL). new very fresh document. CERN Super-Beam (SPL). Possible energy upgrade to 5 GeV could be the subject of a 3rd CDR (CDR3). CERN Super-Beam (SPL). Also a lot of information inside the BENE Midterm scientific report. 2 LoI's in BENE (CARE) CERN

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CERN Super-Beam (SPL)

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  1. CERN Super-Beam(SPL)

  2. CERN Super-Beam (SPL) new very fresh document

  3. CERN Super-Beam (SPL) Possible energy upgrade to 5 GeV could be the subject of a 3rd CDR (CDR3)

  4. CERN Super-Beam (SPL) Also a lot of information inside the BENE Midterm scientific report

  5. 2 LoI's in BENE (CARE) CERN Strasbourg Collection system for future neutrino beamshorn and target integration

  6. CERN LoI • Improve existing infrastructure (at BA7) to allow realistic tests of a NuFact prototype horn at nominal conditions. Analysis of fatigue tests and possible corrective actions. • Investigation of the material structure of the existing Nufact horn (480 k€, available) with a 50 Hz power supply (300 kA, 5 kV, <100 ms). The investigation will be based on laser vibrometer (100 k€, available) measurements of the horn’s resonance frequencies and of their damping constants with increasing number of cycles. A mechanical analysis (mechanical engineers from Poland/Krakow via T. Kurtyka) should be derived to assess the fatigue of the system (horn and strip line) and its life time (expected to be few month of operations at nominal parameters). • Development of a test bench using the NuFact horn and the 50Hz power supply to validate multi-physics simulations in order to reduce the experimental working load and costs (collaboration with Strasbourg). • Address the integration issues of the horn. Complete the design of the existing horn including possibly the studies for a target station located in the inside. Investigate the cooling issues involved. (collaboration with BNL). • Target R&D • Horn and solid target integration total cost for the collector: 1.35 M€

  7. Power Supply for horn pulsing (major issue) values considered by CERN

  8. the power supply Due to the high price go to a modular system and increase small by small the current

  9. "Physics" studies to be restarted P (kW) corne 2 z (cm) energy deposition z (cm) corne

  10. Previous Studies • S. Gilardoni: Horn for Neutrino Factory and comparison with a solenoid • http://doc.cern.ch/archive/electronic/cern/preprints/thesis/thesis-2004-046.pdf • http://newbeams.in2p3.fr/talks/gilardoni.ppt • A. Cazes: Horn for SPL • http://tel.ccsd.cnrs.fr/tel-00008775/en/ • http://slap.web.cern.ch/slap/NuFact/NuFact/nf142.pdf • http://slap.web.cern.ch/slap/NuFact/NuFact/nf-138.pdf

  11. Focusing system: magnetic horn Current of 300 kA p To decay channel Protons B = 0 Hg Target B1/R Simone Gilardoni

  12. Horn prototype ready for tests Simone Gilardoni

  13. Proposed design Particle at target 2.2 GeV protons In collaboration with LAL Simone Gilardoni

  14. 2.2 GeV proton beam : <pp> = 405MeV/c <qp> = 60° 3.5 GeV proton beam : <pp> = 492MeV/c <qp> = 55° New Geometry I = 300 kAmp I = 300 kAmp r(m) r(m) 4 cm 4 cm 30 cm z(m) 30 cm z(m) Antoine Cazes

  15. Reflector • A reflector has been included • It is not optimized yet • diameter : 2m • length :1.5m • I = 600kAmp Antoine Cazes

  16. Flux summary, 2.2 GeV Decay tunnel :20m Decay tunnel :80m Antoine Cazes

  17. Flux summary, 3.5 GeV Decay tunnel :20m Decay tunnel :80m Antoine Cazes

  18. q13 Sensitivity • Use Mauro Mezzetto code. • detector: • Water Cerenkov • 440 kt • at Fréjus (130 km from CERN) • Run: • 2 years with positive focussing. • 8 years with negative focussing. • Computed with dCP=0 (standard benchmark) and q13 = 0 • parameter… • Dm23 = 2.5 10-3eV2 • Dm12 = 7.1 10-5eV2 • sin2(2q23) =1 • sin2(2q12) =0.8 Antoine Cazes

  19. Sensitivity 2.2GeV Preliminary Dm223 90%CL 95%CL 99%CL 10-2 Minimum: q13= 1.6° (90%CL) 10-3 10-4 sin22q13 10-1 10-3 10-2 Antoine Cazes

  20. Sensitivity 3.5GeV Preliminary Dm223 90%CL 95%CL 99%CL 10-2 Minimum: q13= 1.2° (90%CL) 10-3 10-4 sin22q13 10-1 10-3 10-2 Antoine Cazes

  21. Reflector length 3.5m Reflector inner conductor cylindrical length : 2.5m Proton Beam 2.2GeV Simone (90%CL) Other reflector design (S. Gilardoni Thesis) 90%CL 95%CL 99%CL Dm223 10-2 10-3 10-4 10-3 10-2 10-1 sin22q13 Minimum: q13= 1.3° (90%CL) Antoine Cazes

  22. Conclusion • New CDR for SPL • Restart hardware activity around the: • collector • power supply • target integration • Restart optimization studies of the collector • Strengthen the collaboration with other super-beams • Be ready for FP7

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