Efficiency calibration in the lab

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CAUTION! 
This is now GEM1800 @ 145deg distance
But still operated as Xray1 in DAQ
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90deg TFA diff set from 50 to 200.
Also threshold is slightly increased.

Detector: GEM1800 - 145 deg
Source: 210Pb
Distance: 305mm
Start time: 13:58:33 - 14.05.2021
Stop time:  16:46:00 - 14.05.2021

file name: e127b_run0044.lmd
avrg. rate: 40Hz
dead-time:  0%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.