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Apostolos Tsirigotis HELYCON Hellenic Lyceum Cosmic Observatories Network a progress report Hellenic Open University, University of Patras, University.

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Presentation on theme: "Apostolos Tsirigotis HELYCON Hellenic Lyceum Cosmic Observatories Network a progress report Hellenic Open University, University of Patras, University."— Presentation transcript:

1 Apostolos Tsirigotis HELYCON Hellenic Lyceum Cosmic Observatories Network a progress report Hellenic Open University, University of Patras, University of Athens, Aegean University, University of Cyprus Secondary Education System of Western Greece The project is co-funded by the European Social Fund & National Resources EPEAEK-II (PYTHAGORAS) ECRS 2006

2 Single Station GPS Scintillator-PMT DAQ ~20 m 1 m 2 Single Station Set-Up Triangulation  Shower Direction Scintillator-PMT

3 HELYCON in Patras 10 19 eV 10 17 eV 10 15 eV 2 km

4 The HELYCON Detector Module: CONSTRUCTION SC-301 Protvino BICRON BCF91A 12 fibers/column TYVEC 4650B PH: XP1912 10 x 12 cm tiles 80 tiles ~ 0.96 m 2

5 Response to Minimum Ionizing Particles Scintillator A Scintillator B Lead DAQ based on TDS5052 Tektronix (5 Gsamples/s) discriminators Inputs Trigger

6 Response to a MIP DAQ S/W based on LabView On-Line analysis - distributions Digitized Waveforms saved on hard disk Detailed Monte Carlo description Charge (in units of mean p.e. charge) At the Detector Center  Data - Monte Carlo Prediction PRELIMINARY

7 Response to a MIP Detector Uniformity Charge (in units of mean p.e. charge) X Y Typical Mean Numb. of p.e. per m.i.p. : 21 (± 10% variation) PRELIMINARY

8 Response to a MIP Detector Uniformity - Timing Scintillator A Scintillator B Lead discriminators Inputs Trigger ΔΤ consistent with the difference of optical path (fiber refractive index n=1.6) PRELIMINARY

9 Response to a MIP Timing Resolution Pulse High (mV) ns Slewing ΔT in ns σ=2.8ns mip waveform time resolution: ~ 2ns BUT… thickness

10 Response to Showers Discriminator Trigger Input A Input B Charge (in units of mean pe charge) -- on top of each other -- 2.6 m apart -- on top of each other -- 2.6 m apart

11 HELYCON ReadOut Electronics GPS Input USB Port Trigger Ouput4 PMT Signal Inputs 25ps accuracy TDC HPTDC 32 channels (LR) – 8 Channels (HR) 25ps (HR) to 800 ps (LR) accuracy Self Calibrating

12 Monte Carlo Studies Θ rec -Θ true Single Station Performance Vertical Proton Showers (10 6 -10 7 GeV) Distance from core (m) Reconstruction efficiency Angular Resolution (degrees) Distance from core (m)

13 Resolution per reconstructed track (degrees) Examples of a 3-Station Performance Crude (plane approximation) Analysis Vertical Proton Showers (10 6 -10 7 GeV) mm Charge (in units of mean pe charge)

14 An Sea-Top Detector The General Idea… Angular offset Efficiency Resolution Position Threshold Charge (pes) Resolution in determining a possible Angular Offset (degrees)-10 day operation

15 Time Schedule Prototype detector full test (PMT and Scintillator) May 2006 Done Production & test of 15 detectorsSeptember 2006 (10 detectors ready) Electronics TestingOctober 2006 (the prototype is currently tested) DAQ Test + DetectorsJuly-September 2006 DONE Online Software-Analysis Tools- Reconstruction Strategy Development -end 2006 (almost ready) 3 station RunAutumn 2006 ? (end 2006) 2007: 4 more stations in Patras area + 3 more stations in Chios + radio detection of EAS


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