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S cientific D ata A nalysis

MCM’02. S cientific D ata A nalysis. Notes on EUSO Performance. M.C. Maccarone IASF, Palermo 3 rd EUSO General Meeting Huntsville, AL, 19-23 May 2003. M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003. MAPMT36. S cientific D ata A nalysis. EUSO Performance.

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S cientific D ata A nalysis

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  1. MCM’02 Scientific Data Analysis Notes on EUSO Performance M.C. Maccarone IASF, Palermo 3rd EUSO General Meeting Huntsville, AL, 19-23 May 2003 M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  2. MAPMT36 Scientific Data Analysis EUSO Performance Requirements from the IM to the IWG Responsibles (Email message on 7 May 2003): Simulation and Data Analysis: plus Angular Resolution vs energy and zenith angle at bkg1 = 300 photons m-2 ns–1 sr-1 M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  3. Best candidate: GRPIX [0.5 1] km  PixelSize [2.8 5.8] mm Scientific Data Analysis Trigger efficiency (M.C. Maccarone, EUSO-FS and IWG meeting, 6-8 May 02) ifGRPIX then TriggerEfficiency  if Energy thenTriggerEfficiency  if Zenith angle thenTriggerEfficiency  M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  4. Input: X(t), Y(t), Npe(t, macrocell) Time (GTU) X (pixel) Time (GTU) Y (pixel) Scientific Data Analysis Simulation and Reconstruction Signal simulated near the centre of the FoV (Threshtrigger = 5, Treshpersistence= 3 ) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  5. Scientific Data Analysis Trigger efficiency Data sample (21 data-sets): M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  6. Trigger level  5 pe / GTU / pixel Azimuth angle (f0) [0  2p] random Zenith angle (q0) 20°, 30°, 45°, 50°, 60°, 75°, 80° Energy (E0) 3e20 eV, 5e20 eV, 1e21 eV Data set size 2000 events each but 75° and 80° (1000 each) E0 = 1e21 eV E0 = 5e20 eV E0 = 3e20 eV Scientific Data Analysis Trigger efficiency Data sample (21 data-sets): Trigger Efficiency = 50 % “Trigger efficiency” vs  “shower zenith angle” without Čerenkov signal for protons at 3e20 eV, 5e20 eV, 1e21 eV. Events at the centre of the EUSO Nadir. Background included. Clear sky. M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  7. E0 = 1e21 eV E0 = 5e20 eV E0 = 3e20 eV Scientific Data Analysis Trigger efficiency J.Dolbeau, E. Plagnol - May 2003 MAPMT36 No Čerenkov. Events at the centre of the EUSO Nadir. Background included. Clear sky. Clear atmosphere. Fluorescence maximum and Čerenkov peak are also requested. M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  8. Scientific Data Analysis Track Reconstruction The CARMF Algorithm – Cluster Analysisand Robust Median Fit X(t) and Y(t) are the main info used (binary images  pattern recognition ) Cluster Analysis … to extract the significant track along each projection view density r, cut threshold cut , significance k level inferred from the statistics of each data sub-set Robust Median Fit … to determine its slope coherence and simple geometry … to reconstruct the arrival direction (data “on axis”) dubious cases resolved through the choice of “coherent” cluster tracks along the two projection planes on the basis of their maximum time length (Percentage of coherence always > 95%) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  9. q0=80° q0=80° q0=75° q0=75° q0=60° q0=60° q0=50° q0=45° q0=50° q0=45° q0=30° q0=30° Scientific Data Analysis Time length of the cluster tracks <Cluster Track Length> (ms) vs Energy E0 (eV) 187.5 ms <Cluster Track Length> (GTU-pixel) vs Energy E0 (eV) 75 px 27.5 ms 11 px GTU-pixel = 2.5 ms M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  10. E0 = 3e20 eV E0 = 5e20 eV E0 = 5e19 eV E0 = 1e20 eV q0 = 25° q0 = 45° q0 = 25° q0 = 25° q0 = 25° q0 = 45° q0 = 60° Angular resolution (deg) q0 = 60° q0 = 45° q0 = 45° q0 = 75° q0 = 60° q0 = 75° q0 = 60° q0 = 75° q0 = 75° GRPIX (km) GRPIX (km) GRPIX (km) GRPIX (km) GRPIX = 1 km GRPIX = 0.5 km GRPIX = 1.5 km q0 = 25° q0 = 25° q0 = 25° Angular resolution (deg) q0 = 45° q0 = 45° q0 = 45° q0 = 60° q0 = 60° q0 = 60° q0 = 75° q0 = 75° q0 = 75° Energy (eV) Energy (eV) Energy (eV) Scientific Data Analysis Angular Resolution Results depend on the reconstruction method and will improve if Cerenkov information can be used 0.3° if Energy … TimeLength  … No.fired pixels  then Angular Resolution  if Zenithangle  then Angular Resolution … Trigger Efficiency improves if GRPIX then Angular Resolution  … less pixels are fired on M.C. Maccarone, EUSO General Meeting, Paris, 14 June 2002

  11. Scientific Data Analysis … “tracks” in EUSO q0 = 50° 3e20 eV 5e20 eV 1e21 eV q-q0 q-q0 q-q0 f-f0 f-f0 f-f0 M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  12. Scientific Data Analysis Samples at q0 = 50° E0 =1e21 eV E0 = 5e20 eV E0 = 3e20 eV sDq = 3.32 ° sDq = 2.16 ° sDq = 1.38 ° sDf = 3.96 ° sDf = 3.18 ° sDf = 1.91 ° sDq (sDf)  Standard Deviation of the distribution in q-q0 (f-f0) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  13. q0 30° 45° 50° 60° 75° 80° E0 3e20 eV 5e20 eV 1e21eV Scientific Data Analysis q - q0 Distribution of q – q0 (results from the CARMF algorithm) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  14. q0 30° 45° 50° 60° 75° 80° E0 3e20 eV 5e20 eV 1e21eV Scientific Data Analysis f - f0 Distribution of f – f0 (results from the CARMF algorithm) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  15. q0=30° q0=45° q0=50° q0=60° q0=75° q0=80° Scientific Data Analysis Angular Resolution AW+CARMF Čerenkov No Clouds No Background Yes <AngRes> (deg) vs Energy E0 (eV) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

  16. Čerenkov Yes Clouds No Background Yes q0=30° q0=45° q0=50° q0=60° q0=75° q0=80° Scientific Data Analysis Angular Resolution Fitting Method AW+CARMF Čerenkov No Clouds No Background Yes J. Dolbeau, E. Plagnol May 2003 1e20 eV <AngRes> (deg) vs Energy E0 (eV) M.C. Maccarone, EUSO General Meeting, Huntsville, 19-23 May 2003

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