M.apollonioNuFact??1 ABSTRACT In the Muon Ionization Cooling Experiment (MICE) at RAL, muons are produced and transported in a dedicated beam line connecting.

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Presentation transcript:

m.apollonioNuFact??1 ABSTRACT In the Muon Ionization Cooling Experiment (MICE) at RAL, muons are produced and transported in a dedicated beam line connecting the production point (target) to the cooling channel. We discuss the main features of the beamline, meant to provide muons with momenta between 140 MeV/c and 240 MeV/c and emittances up to 10 mm rad, which is accomplished by means of a diffuser. Matching procedures to the MICE cooling channel are also described. In summer 2010 we performed an intense data taking campaign to finalize the calibration of the MICE PID detectors and the understanding of the beam line, which completes the STEPI phase of MICE. We highlight the main results from these data with an eye to future activities. I have been told I have got 3’ … so we have 20” per slide!

m.apollonioNuFact??2 Which plots to show? reminder-1: all are VERY preliminary results, and we need to consolidate the analysis … reminder-2: we are not discovering the Higgs boson. This is a muon tap and we want a good flow … So we need to be honest and rigorous BUT what you have seen is what we ‘ve got so far Having said that, my structure for the Mumbai talk is as follows - General philosophy behind the beam line - purity and transmission - matching to mice - (e,P) Matrix - DATA & Analysis (leaving most of the latter to Mark) - summer of ± polarities and muon rates (Q! can we agree on a NUMBER?) - species in the beam / proton absorber - scans (first results) - some flashes of first results …

m.apollonioNuFact??3 Q4 Q1 Dipole1 DK solenoid Q2Q3 Dipole2 Q5Q6Q7Q8Q9   Scope of the Beam Line - produce  from p interactions with a titanium target - transport  (Q1-2-3) and select in momentum (D1) - collect  and select in momentum (D2) - transport  to MICE and match - maximize  purity (reduce  contamination) - maximize transmission - define optics for the MICE program

m.apollonio Physics Case Neutrino Factory Muon Cooling MICE Personal Contributions Conclusion and Prospects m kinematic limits m backward peak p peak    P D1 (MeV/c) P D2 (MeV/c) 409 MeV/c 238 MeV/c -  purity - select backward going m (D2) m forward peak

Ptgt=321.3/Psol=1 85 Pdif=151  =0.2  =0.56 m t=0.0 mm Ptgt=390/Psol=23 1 Pdif=207  =0.1  =0.36 m t=0.0 mm Ptgt=453.6/Psol= 265 Pdif=245  =0.1  =0.42 m t=0.0mm 6 Ptgt=327.6/Psol=1 89 Pdif=148  =0.3  =1.13 m t=5.0 mm Ptgt=408.6/Psol= 238 Pdif=215  =0.2  =0.78 m t=7.5 mm Ptgt=471.6/Psol= 276 Pdif=256  =0.2  =0.8 m t=7.5mm 10 Ptgt=338.4/Psol=1 95 Pdif=164  =0.6  =1.98 m t=10 mm Ptgt=429.3/Psol= 251 Pdif=229  =0.4  =1.31 m t=15.5 mm Ptgt=486/Psol=28 5 Pdif=267  =0.3  =1.29 m t=15.5 mm m.apollonioNuFact??5 ( ,P) matrix concept - define Q4-9 to match the cooling channel beam

m.apollonioNuFact??6 3/10/2010MICE CM 28 - Sofia66 M R2300 DATA G4Beamline BeamLoss (mV)Trig/spill# of TriggersTrig. TypeSpill gate (ms)ISIS RepRate TOF Hz Example: are we happy to show this?

m.apollonioNuFact??7 3/10/2010MICE CM 28 - Sofia77 reproducibility: R2232 (august) which cuts? R2232(october) Need to freeze a geometry / calibration set of cuts MC R2232 DATA R2232 [SB] DATA R2232 [MA]

m.apollonioNuFact??8 M R2300 BeamLoss (mV)Trig/spill# of TriggersTrig. TypeSpill gate (ms)ISIS RepRate TOF Hz G4Beamline DATA Example: are we happy to show this?

m.apollonioNuFact??9 M R2244 G4Beamline DATA And this?