CHIPP Aug 2010J.S. GraulichSlide 1 MICE and the Neutrino Factory Jean-Sebastien Graulich, Geneva.

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Presentation transcript:

CHIPP Aug 2010J.S. GraulichSlide 1 MICE and the Neutrino Factory Jean-Sebastien Graulich, Geneva

CHIPP Aug 2010J.S. GraulichSlide 2 Neutrino Physics  Neutrino Oscillation is established The Standard Model is incomplete !  Phenological Model Neutrinos have masses Flavor states are mixed Same as for quarks BUT… completely different !  A full bunch of fundamental questions Is lepton number conserved ? Is the its own anti-particle ? Majorana masses ? Does the oscillations violate CP ? Why masses are so small ?  A strong need for precision measurements Mixing angles Mass differences and Mass hierarchy CP violation parameter

Options for the future  Improve Current Technology High Power Super Beam  Radioactive Ions Storage ring Beta-Beam  Muon Storage Ring Neutrino Factory  How to choose ? Performances Strategy (or risk management), flexibility  Advantages of NF High energy, High intensity neutrino beam Very well defined beam content ( , e ) or ( , e ) CHIPP Aug 2010J.S. GraulichSlide 3

Sensitivity:  CP CHIPP Aug 2010J.S. GraulichSlide 4 From the report of the CERN Scientific Policy Committee, March 2010

The Ultimate  The most sensitive also for Mass Hierarchy sin 2 2  13 (down to )  Neutrino factory is outstanding  Can we do it ? How ? -> Some R&D needed Where ? What Detector ? When ? (How much it costs ?) CHIPP Aug 2010J.S. GraulichSlide 5

Neutrino Factory CHIPP Aug 2010J.S. GraulichSlide 6 IDS-NF-002:

R&D for ν-Factory MERIT (CERN) High Power Target MICE (RAL, UK) Muon Cooling EMMA (UK) Large Acceptance Fast Accelerator (FFAG)  Coordinated International Effort

MICE CHIPP Aug 2010J.S. GraulichSlide 8  Muon Ionisation Cooling Experiment Design, build and operate a realistic section of cooling channel Measure its performance (in different modes)  => Optimize Neutrino Factory designs (And also Muon Collider) Super- conducting channel High gradient RF in Magnetic Field Liquid H2

J.S. GraulichSlide 9 Spokesperson: Alain Blondel (Geneva, Switzerland)

COOL07 Sept 2007Jean-Sébastien GraulichSlide 10 RAL  Rutherford Appleton Laboratory, UK Brand new muon beam line Built from scratch  ISIS proton Synchrotron 800 MeV 200  Amp

MICE Step By Step Commission beam line & detectors Precisely measure incoming emittance & compare trackers Precisely measure muon cooling Test sustainable cooling Ultimate MICE goal: operate full cooling channel Slide 11

Lyon, Octobre 2009Jean-Sébastien GraulichSlide 12 MICE Beam Line Design Specifications: - ~ - ~ 1 Spill / second - ~ - ~ 1ms Spill duration muons / Spill - Muon beam momentum between 140 to 240 MeV/c - Diffusers allowing from 1  to 10  mm rad beam - p D2 = p D1 /2 (backward muons) D1 D2 Q1-Q3 Q4-Q6Q7-Q9

MICE Target  New Target installed in 2009  Running at 0.4 Hz  Stable over 570,000 dips J.S. GraulichSlide 13 MICE target path ISIS cycles Machine Start Beam losses Rates VS Beam Losses in ISIS Record Intensity

The Beamline is Operational CHIPP Aug 2010J.S. GraulichSlide 14 Q7-Q9 Q4-Q6D2 Pion Decay Solenoid (during installation) Downstream Muon Beam Line Mice Target System in ISIS Upstream Pion Beam Line Q1-Q3 D1

Three Time of Flight Stations 55 ps resolution PID + Phase Space Cherenkov Counters EM-Cal (preshower) PID Detectors CHIPP Aug 2010J.S. GraulichSlide 15

CHIPP Aug 2010J.S. GraulichSlide 16 MICE has a Muon Beam ! Beam Studies in progress All data on tape

CHIPP Aug 2010J.S. GraulichSlide 17 Simulation (G4MICE) Data Particle by particle tracking !

Lyon, Octobre 2009Jean-Sébastien GraulichSlide 18 Electron Muon Ranger Electron Muon Ranger  In construction in Geneva  Conceptual Idea, Simulation, Design, Electronics and Construction  In Collaboration with Como/Trieste for the front-end and readout electronics  3000 digital channels read out by Multi-Anode PMTs  48 layers with one common charge readout each  Small scale Model of TASD Extruded Scintillator Small Scale Mechanical Model Coupled to WLS fibers

IDS-NF  International Design Study for the Neutrino Factory (the IDS-NF) collaboration and the EUROnu collaboration  Final Report due for 2012

NF-Detectors  Two detectors ! At different baselines Better than 1 larger detector at a single BL  Preferred combination ! 2000—5000 km; good sensitivity to CP violation 7000—8000 km; mass hierarchy, θ 13, degeneracy resolution CHIPP Aug 2010J.S. GraulichSlide 20 Kopp, Ota, Winter, Phys.Rev.D78: ,2008. CP MH

Possible Sites  Let’s assume the NF is built at CERN  Possible sites CHIPP Aug 2010J.S. GraulichSlide 21 CERN – Phyasalmi, Finland 2285 km Studied under LAGUNA CERN – INO, India 7152 km (~ magic) Deep copper mine

Possible Detectors  Detectors must be magnetised Best signature is « Wrong Sign Muon » CHIPP Aug 2010J.S. GraulichSlide 22 Magnetised Iron Detector (MIND) Active Scintillator Detector (TASD) Similar to NOvA and … … MICE Electron Muon Ranger Magnetised Liquid Argon Detector 15 m 150 m

Summary  The Neutrino Factory is the most powerful tool for precision neutrino physics  MICE is a key R&D Step toward NF  MICE has completed its first step Detectors and Beamline Commissioning  There is an IDS-NF in preparation  CERN-Phyasalmi and CERN-INO combination looks attractive CHIPP Aug 2010J.S. GraulichSlide 23

CHIPP Aug 2010J.S. GraulichSlide 24

Next Step: Spectrometer Construction problems with the superconduction solenoids Tracker Ready, tested with cosmics Installation delayed to spring 2011

CHIPP Aug 2010J.S. GraulichSlide 26