Efficiency calibration in the lab

Detector: GLP2000 - 35 deg
Source: 210Pb
Distance: 334mm
Start time: 14:28:26 - 05.05.2021
Stop time:  21:05:00 - 05.05.2021

file name: e127b_run0018.lmd
avrg. rate: 5 Hz
dead-time:  0%

Blocking gate 2.5 us in vulom.

Threshold < 10keV

The scale serial communication is off.

There are many rate spikes in the first hour of measurement.