EUSO-TA

EUSO-TA

EUSO-TA is equipped with one full original JEM-EUSO PDM (photon detection module with 2304 pixels) and with an optical system made of two Fresnel lenses, with a side of 1 meter covering a field of view of ±6 degrees. It is installed at the Telescope Array site in Utah, USA.

In operation since February 2015, it measures the UV light (290 – 430 nm) in the atmosphere in a FoV of ± 6 degrees and it is triggered by the fluorescence detectors of TA. It takes use of two TA Laser Facilities (Electron Light Source (LIS) and Central Laser Facility (CLF) at 100 m and 21 km respectively from EUSO-TA instrument) and one EUSO laser (CSOM) for absolute calibration. The aims are to obtain an end to end calibration of our prototype telescope, and an inter-calibration with the fluorescence detector of TA.
In perspective the instrument is expected to be installed also at the Auger site for a cross-calibration of the system in Auger and TA.

Up to now 5 observation campaigns have been performed:

  • February/March 2015: Detector installation, CLF and CSOM observations
  • May 2015: Cosmic ray observation, CLF and CSOM observations
  • September 2015: Cosmic ray observation, CLF and CSOM observations
  • October 2015: Cosmic ray observation, CLF and CSOM observations
  • November 2015: Cosmic ray observation, CLF and CSOM observations

for a total of 48 observation nights (cosmic ray observation time: 70%).

Data analysis is in progress.

 

EUSO-TA Photo Galleries
fig-TA-EUSO-Lens-Installation01-b (1)    stazione fig-TA-EUSO-Lens-Installation02-b    fig-TA-EUSO-Lens-Installation03-b    fig-TA-EUSO-Lens-Installation04-b    fig-TA-EUSO-Lens-Installation05-b    stelle stelle2