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Une petite lettre à Père Noël….

Une petite lettre à Père Noël…. A. Blondel, G. Prior, S. Borghi,R.Sandstr ö m, E.Gschwendtner, A. Cervera, P. Bene, J.-P. Richeux, S. Gilardoni. Harp. NDC: Anselmo. TPC: Silvia, Gersende. Il y a un an: la TPC, cette inconnue. Dead zone. Unequalization. Distortions. Cross Talk.

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Une petite lettre à Père Noël….

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  1. Une petite lettre à Père Noël…. A. Blondel, G. Prior, S. Borghi,R.Sandström,E.Gschwendtner, A. Cervera, P. Bene, J.-P. Richeux,S. Gilardoni

  2. Harp NDC: Anselmo TPC: Silvia, Gersende

  3. Il y a un an: la TPC, cette inconnue Dead zone Unequalization Distortions Cross Talk Banana's effect Other effect

  4. Avec l’aide de beaucoup de monde … et du travaille

  5. Aujourd’hui Good map of dead and hot pads Model of cross talk and corrections Preliminary equalisation

  6. Model of cross talk and corrections Montecarlo Performance ideal Tpc Evaluation of corrections Machinery Preliminary equalisation Preliminary performance of real Tpc Good map of dead and hot pads

  7. HARP TPC dE/dx (Preliminary) Comparison of pt/pt(Preliminary) Data 2003 Protons MC Data Muons and pions Relativistic rise Electrons? Et pour Noël de cett’ année

  8. Mice @ RAL:Proposal approuvé The review committee...

  9. Le project TPG pour MICE: Edda, Rikard, Jean-Pierre, Pierre  MICE TPG Paramètres Détecteur des traces pour MICE • TPC: 1m long, 30cm diameter of the active area (40cm diameter field-cage) • Gas choice • To minimize the material in the beam and to keep the X-ray conversions to the minimum, a He-based mix is preferred. (He/CH4, He/CO2) • Amplification • By a 3-GEM structure. Large gains are needed if one wants to use a He-based mix • Readout • In 3 projections, over about 710K hexagonal pads in a 30cm diameter disk • Light in the longitudinal direction • As little as possible material in the beam • Light and uniform material for the readout amplification and readout planes • Electronics and connections out of the beam region • Capable to stand high particle flux • In an a harsh environment due to X-ray background from RF cavity dark currents (large amount of spurious hits)

  10. Harp  Mice GEM Hexaboard 30cm diameter 2mm gap 60µm e 300µm pads total: 710000 pads COMPLETE DETECTOR TESTS NOW!

  11. Simulation de la TPG et G4MICE • Simulation du détecteur Modélisation du bruit du fond du au RF tout ça en Geant4

  12. Experience K2K: les premieres shifts(Anselmo, Silvia, Alain)

  13. oscillation peak 2.0 1.5 2.5 0 0.5 1.0 K2K and HARP • First HARP analysis already in progress: • First long baseline (250km) neutrino experiment • To investigate neutrino oscillation observed in atmospheric neutrinos by Super-Kamiokande Estimate neutrino fluxes for K2K and MiniBooNE experiments To be measured by HARP (K2K example) • <En> = 1.3 GeV • almost pure nm: ~98% Super-Kamiokande 50 kton water cherenkov detector far/near 250 km En(GeV)) • 12 GeV-PS@KEK • Neutrino Beam • Beam Monitors • Front Detectors Beam MC confirmed by Pion Monitor Beam MC

  14. Geometrical Acceptance of HARP (forward) K2K interest K2K interest P > 1 GeV K2K interest K2K analysisin HARP (P, q) of pions producing neutrinos in the osc. peak Neutrino spectrum in K2K near detector oscillation peak

  15. Corne Nufact • Test mécaniques terminesNouvelle alimentation ( 100 kA, 100 s, 0.5 Hz)Preparation du voyage pour Paris

  16. Au revoir auprochaine année avec des autresbonnes nouvelles Buon Natale

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