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N eutrino E xtended S ubmarine T elescope with O ceanographic R esearch

N eutrino E xtended S ubmarine T elescope with O ceanographic R esearch. Operation and performance of the NESTOR test detector. 2003. Successful deployment of one NESTOR star with 12 Optical Modules to 4000m using the cableship RAYMOND CROZE (FranceTelecom)

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N eutrino E xtended S ubmarine T elescope with O ceanographic R esearch

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  1. Neutrino Extended Submarine Telescope with Oceanographic Research Operation and performance of the NESTOR test detector

  2. 2003 Successful deployment of one NESTOR star with 12 Optical Modules to 4000m using the cableship RAYMOND CROZE (FranceTelecom) 29th of March: The first deep sea muon data transmitted to shore

  3. NESTOR Star Deployment (March 2003)

  4. muon track generation GEANT FASTSIM muon propagation & γ shower generation Cherenkov photon emission and propagation PMT response simulation background noise Digitization ATWD &Trigger simulation Data Analysis Flow Raw Data Interface Waveform Reconstruction Data Quality Histograms Hit Definition Software Monitor Histograms Database (gains, baselines,attenuation etc) DST Production Calibration Data Analysis Track Reconstruction MiniDST Ntuples & Histograms Calibration Database Quality Histograms

  5. Signal processing: Attenuation Corrections Double pulse disentangling Rise time “recovery” “automatic” separation Voltage (mV) Before the attenuation corrections After the attenuation corrections Time (ns) Voltage (mV) Fit double pulses Time (ns)

  6. Signal processing σ: 0.8ns Timing and Amplitude Effects Data from a depth of 3800m

  7. K40 Background:A stable calibration source Calibration Data from a depth of 3800 m PMT Pulse Height Distribution single p.e. LED Run single p.e. pulse height distribution two p.e.s pulse height distribution dark current pulse height distribution sum of the above

  8. Data from a depth of 3800m Single PMT Rates Trigger:≥4fold Coincidence

  9. Data from a depth of 3800 m Bioluminescence Occurs for the 1.1% ± 0.1% of the Active Experimental Time

  10. <Δt>: 0.6 ± 0.1 ns σ : 3.3 ± 0.1 ns Number of Events Time Difference (ns) Number of Events <Δt>: 0.2 ± 0.1 ns σ : 3.3 ± 0.1 ns Time Difference (ns) Data from a depth of 3800 m Calibration Run Calibration Data Analysis Calibration Database Quality Histograms LED Calibration Data Gain Monitors

  11. Data from a depth of 3800 m Calibration Run Calibration Data Analysis Calibration Database Quality Histograms

  12. Experimental Points M.C. Estimation(Atmospheric muons + K40 ) M.C. Estimation(Atmospheric muons only) Data from a depth of 3800 m Trigger Studies Data Collected with 4fold Majority Trigger c

  13. Experimental Points M.C. Estimation (Atmospheric muons + K40 ) Data from a depth of 3800 m Trigger Studies Data Collected with 4fold Majority Trigger

  14. Experimental Points M.C. Estimation (Atmospheric muons + K40 ) PMT Pulse Height Distributions

  15. Charge & Timing information

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