The Large Aperture GRB Observatory (LAGO) Humberto Salazar for the LAGO collaboration August 11, 2011
Main goal: Search for GRBs with gammas in the range energy 1 GeV - 1 TeV. Single particle technique High altitude water cerenkov detectors
Fermi-LAT, > 10 GeV photons event (1s) (1sec !
LAG0 : Single particle technique
LAGO 2011 * 4550m asl 4470m asl 4780m asl 5250m asl 1400m asl * Bariloche, Colombia, Venezuela, Mexico and Guatemala have Universities
Chacaltaya´s LAGO WCDs array
DAQ System (Old Auger electronics). Rate; 5 ms (above 0.5 phe) Calibration software
Sierra Negra Array 4550 asl. 4 Water Cherenkov Detectors (3 operating)
DAQ System. Rate; 5 ms
Marcapomacocha, Peru.
Some candidates But, No confirmation: Fluence limits Data analysis and results
SH poster & SH poster
Present and Future plans for LAGO… Large area, New electronics. New sites. 40m2 4m2
New Detector Sierra Negra: 4x (40m2) x1.1m height
Rate vs distance Rate/seg distance to the center (cm) 7, , , , Threshold 0.9 phe For simulations of the performance of the detectors see OG poster
New 4 Channels Sierra Negra. Baseline noise. Average rate (5seg)
New detectors and new Bolivia, Peru and Ecuador ? (>5000masl).
Conclusions An efficient dedicated experiment can be done at low cost by using WCD at high altitude.