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Exploring Cosmic Rays: Analyzing Auger Observations and Technical Insights

The Auger Northern Observatory, led by James W. Cronin, presented findings at the SOCoL conference in Trondheim on June 16, 2009. With an exposure of approximately 17,000 km²-yr, the observatory noted about 20 events per year for cosmic rays with zenith angles ≤ 60°. Over a decade, Auger North recorded about 1,400 events above 60 EeV. This presentation highlighted several technical issues including single PMT checks, tank insulation, and communication challenges. Monte Carlo simulations were employed to enhance understanding of the array's performance.

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Exploring Cosmic Rays: Analyzing Auger Observations and Technical Insights

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  1. Auger Northern Observatory James W. Cronin SOCoL Trondheim June 16, 2009

  2. Exposure ~ 17000 km2-yr 2.3 x PRL Zenith angle ≤ 600

  3. ~20 events/year ->

  4. Ralph Engel

  5. Auger North - 10 yr ~1,400 events E > 60 EeV Several events per source Auger South – 10 yr ~200 events E > 60 EeV

  6. 1 PMT per tank

  7. Apertures & Energy Threshold Auger North Anisotropies

  8. Angular resolution basically depends on number of triggered tanks. Evaluate from real events excluding tanks to approximate a sparser array Do a Monte Carlo Simulation

  9. Ioana Maris

  10. R & D array in Lamar Colorado 10 tanks Technical Issues: Single PMT (checked in south) Insulation of tanks Communications

  11. END

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