Thesis presentation - APC

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Calibration methods • Showers reconstruction => Estimation of the energy deposed in the tank • 1 VEM (muon crossing the tank vertically in the center) => 240 MeV ⇒ Charge reference unity for the Observatory • Observatory detectors => Proportional quantity measurement : the VEM H • Measurements on the Orsay tank => VEM H estimation => VEM to VEM H ratio => Other measurements 20
Detectors calibration unity VEM configuration • Trigger : scintillators • Connected to the deposed energy VEM H configuration • Trigger : coincidence between the 3 PMTs • Connected to the Observatory data 1000 2000 3000 Me- 1000 2000 3000 Me- => Uniformity of the response for all the array 21
Page 1 and 2: PIERRE AUGER OBSERVATORY SURFACE DE
Page 3 and 4: FRAMEWORK I - Presentation II - Exp
Page 5 and 6: Surface array Čerenkov detectors :
Page 11 and 12: • Allow a detailed study of the s
Page 13 and 14: Photomultiplier tubes (PMT) • PMT
Page 15 and 16: Bases and high voltage modules (HV)
Page 17 and 18: measured by Auger - UCLA collaborat
Page 19: Dynode to anode ratio measurements
Page 23 and 24: Difference between the VEM and the
Page 25 and 26: Decay time (τ) Orsay test detector
Page 29 and 30: Parameters Wavelength dependent •
Page 31 and 32: Physical Processes • Čerenkov ef
Page 33 and 34: Auger VEM H Charge to amplitude rat
Page 35 and 36: Comparison between 1 PMT and the av
Page 39 and 40: Baseline stability Orsay => 0,00045
Page 41 and 42: Control data Evolution in time of t
Page 43 and 44: event 762238 - 18 tanks Cuve 105 So
Page 45 and 46: constant Muon flux and altitude ∝
Page 47: LED signals Black box Tank For the

Thesis presentation - APC

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