1 / 15

Physics Laboratory

Apostolos Tsirigotis. Physics Laboratory. School of Science and Technology. Hellenic Open University. HELYCON He llenic Ly ceum C osmic O bservatories N etwork a progress report.

friedad
Download Presentation

Physics Laboratory

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

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

  2. Single Station Single Station Set-Up GPS Scintillator-PMT Scintillator-PMT 1 m2 Scintillator-PMT ~20 m Scintillator-PMT Triangulation Shower Direction DAQ

  3. 1019 eV 1015 eV 1017 eV 2 km HELYCON in Patras

  4. BICRON BCF91A 12 fibers/column SC-301 Protvino TYVEC 4650B PH: XP1912 The HELYCON Detector Module: CONSTRUCTION 10 x 12 cm tiles 80 tiles ~ 0.96 m2

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

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

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

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

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

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

  11. HELYCON ReadOut Electronics 4 PMT Signal Inputs Trigger Ouput USB Port • HPTDC • 32 channels (LR) – 8 Channels (HR) • 25ps (HR) to 800 ps (LR) accuracy • Self Calibrating GPS Input 25ps accuracy TDC

  12. Monte Carlo Studies Reconstruction efficiency Distance from core (m) Angular Resolution (degrees) Θrec-Θtrue Vertical Proton Showers (106-107 GeV) Single Station Performance Distance from core (m)

  13. Resolution per reconstructed track (degrees) Examples of a 3-Station Performance Crude (plane approximation) Analysis Vertical Proton Showers (106-107 GeV) mm Charge (in units of mean pe charge) mm

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

  15. Time Schedule 2007: 4 more stations in Patras area + 3 more stations in Chios + radio detection of EAS

More Related