Efficiency calibration in the lab

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CAUTION! 
This is now GEM3000 @ 90deg distance
But still operated as Xray3 in DAQ
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Detector: GEM3000 - 90 deg
Source: 210Pb
Distance: 167.5mm
Start time: 11:46:19 - 12.05.2021
Stop time:  13:25:46 - 12.05.2021

file name: e127b_run0029.lmd
avrg. rate: 50Hz
dead-time:  1%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.