Electric field at 11 May

Near surface electric field at Aragats

Aragats and Nor Amberd near surface electric field; distance to lightning and 3 cm thick outdoors scintillator count rates

One-second time series

Waveforms of May 11,2015 events

May 11,201516:29:36UT

500s

Waveforms of May 11,2015 eventsMay 11,201516:32:06UT (zoom)

50s

Waveforms of May 11,2015 eventsMay 11,2015 16:35:06 UT (zoom)

50s

STAND3 layers

1-sec time series

NaI evidence; green – outdoors NaI(4)

Stand3-combinations; green – 1111-muons

NaI(4), STAND1-skl(010)-STAND3-1

May 11-25 super events: Summer plans: workshp, new detectors, new analysis

• 1-sec time series prove that lightning kill TGE• Problem of atmospheric electricity-lightning initiation, Define lightning timing – wwlln, EFM-

Aragats-Nor Amberd; LD – time stamp of pulses:• LD evidence – David Pokhsraryan• Radio-wave form evidence – new picoscopes understand waveform connect them with

different stages of lightning.• Photos – nearby lightnings do not seen – reduce sensitivity? Install new HD-several

terabytes? Ordered already?• Finally – low energy NaI spectrometer!• Another enigma: particles from the lightning!• Low energy electron detector – 0.5 cm thick; CSI – energy spectra; linear ADC, new

electronics• Mnatsakanyan, Pokhsraryan.• Stand1 and STAND1-SKL – move and make one more!• Understand electronics parameters• Repairs of Serpukhov scintillators• UV and IR- from October 2014 – very little progress, Garipov is coming asking what to bring,

no answer from CRD staff! (Tigran, Artur, Haik, David)!