EUSOEUSOAtmospheric Monitoring Atmospheric Monitoring

from Spacefrom Space

M.Teshima M.Teshima on behalf of the EUSO collaborationon behalf of the EUSO collaboration

MPI fMPI füür Physik, Mr Physik, Münchenünchen(Werner-Heisenberg-Institut)(Werner-Heisenberg-Institut)

EUSO ConceptEUSO Concept

Large Distance and Large F.O.V. Large Distance and Large F.O.V. Large Aperture Large Aperture

~6x10~6x105 5 kmkm2 2 srsrGood Cosmic Ray detectorGood Cosmic Ray detector3000 times sensitive to C.R. bursts3000 times sensitive to C.R. bursts

~2000 Giga-ton atmosphere~2000 Giga-ton atmosphereGood neutrino detectorGood neutrino detector

All Sky coverageAll Sky coverage North and south sky covered uniformly. North and south sky covered uniformly.

ISS orbit: ~50°inclination.ISS orbit: ~50°inclination.

Complementary to the observation fComplementary to the observation from the groundrom the ground

Different energy scaleDifferent energy scale Different systematic errorsDifferent systematic errors

Shower Geometry is well definedShower Geometry is well defined Constant distance from detectorConstant distance from detector

Attenuation correction is minimum!!

Atmospheric monitoring in EUSOAtmospheric monitoring in EUSOIR ~10IR ~10μμm CCD camera (256x256), UV CCD Cameram CCD camera (256x256), UV CCD Camera

IR: Cloud monitor (clould looks colder than the ground temperaturIR: Cloud monitor (clould looks colder than the ground temperature)e)

UV; Detection of lightening and other background, for example, aiUV; Detection of lightening and other background, for example, air plane flashr plane flash

Ground Light Source; Complimentary to Onboard lidarGround Light Source; Complimentary to Onboard lidar Ground based LIDAR system, 10-20 stationsGround based LIDAR system, 10-20 stations Flashers, Hamamatsu L6604Flashers, Hamamatsu L6604

10 ground stations + NASA research aircraft P-3B10 ground stations + NASA research aircraft P-3B500-1000 flashes/station can be used for monitoring500-1000 flashes/station can be used for monitoring

Onboard LIDAR systemOnboard LIDAR system Power and mass budgetPower and mass budget Effectiveness on the analysisEffectiveness on the analysis Current Baseline designCurrent Baseline design

one color 1064nm LIDAR system, 50mJ/100Hz, 140kg, 300Wone color 1064nm LIDAR system, 50mJ/100Hz, 140kg, 300WBlind LIDAR for EUSOBlind LIDAR for EUSO

InformationInformationtop of thick cloud altitudetop of thick cloud altitudeThin cloud transmission at 1000nmThin cloud transmission at 1000nm

Flasher and the intensityFlasher and the intensityIntegrated transmission can be measuredIntegrated transmission can be measured

Hamamatsu L6604~1J/shot

Flasher Image on EUSO FSFlasher Image on EUSO FS~30Hz flash rate0.05 deg / flashTotal ~1000 flashes

EUSO FOV

EUSO ~16km/s

50mJ Nd: YAG Ground LIDAR50mJ Nd: YAG Ground LIDAR

Define beam intensity in Define beam intensity in each laser path by G.B.L.each laser path by G.B.L.Transmissions between Transmissions between space and various space and various altitudealtitude

Simulate shower trackSimulate shower track Check reconstruction Check reconstruction

qualityquality End to end experimental End to end experimental

calibrationcalibration

10stations 10stations ~1/day ~1/day

Lidar Image on EUSO FSLidar Image on EUSO FS100Hz shot rate0.01 deg / shotTotal ~3000 shots

Good simulation forCherenkov + fluorescence

EUSO ~16km/s

EUSO FOV