Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 133Ba_hi Distance: 334mm Start time: 9:42:24 - 06.05.2021 Stop time: 14:03:44 - 06.05.2021 file name: e127b_run0020.lmd avrg. rate: 90 Hz dead-time: 1% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off.
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 210Pb Distance: 334mm Start time: 21:22:06 - 05.05.2021 Stop time: 8:55:21 - 06.05.2021 file name: e127b_run0019.lmd avrg. rate: 5 Hz dead-time: 0% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off. Many rates spikes, check carefully!
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.
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 133Ba_hi Distance: 334mm Start time: 10:02:07 - 05.05.2021 Stop time: 14:13:23 - 05.05.2021 file name: e127b_run0016.lmd avrg. rate: 90 Hz dead-time: 1% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off.
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 241Am_hi Distance: 334mm Start time: 21:17:44 - 04.05.2021 Stop time: 8:42:09 - 05.05.2021 file name: e127b_run0015.lmd avrg. rate: 25 Hz dead-time: 0% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off.
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 241Am_hi Distance: 334mm Start time: 16:04:21 - 04.05.2021 Stop time: 20:41:45 - 04.05.2021 file name: e127b_run0014.lmd avrg. rate: 25 Hz dead-time: 0% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off.
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 241Am_hi Distance: 334mm Start time: 14:45:51 - 04.05.2021 Stop time: 15:47:48 - 04.05.2021 file name: e127b_run0013.lmd avrg. rate: 25 Hz dead-time: 0% Blocking gate 2.5 us in vulom. Threshold < 10keV The scale serial communication is off.
When the readout/control of the det. weight control via serial connection is active, there is a clear signal induced in the Xray detectors for each command sent. The solution for now is, that we activate weight control NOT DURING MEASUREMENT!
Efficiency calibration in the lab Detector: GLP2000 - 35 deg Source: 241Am_hi Distance: 334mm Start time: 14:31:24 - 04.05.2021 Stop time: 14:42:13 - 04.05.2021 file name: e127b_run0012.lmd avrg. rate: 25 Hz dead-time: 0% Threshold < 10keV The scale serial communication is off. Stopped due to noise rate...
the attached efficiency curve for the 90 deg. xray detector is made with the runs e127b_run0008.lmd e127b_run0009.lmd e127b_run0010.lmd All of them were taken in the lab (not in ESR). This is a very preliminary analysis! E.g. deadtime has been estimated and was not cleanly determined.
Efficiency calibration in the lab Detector: GEM1800 - 90 deg Source: 133Ba_low Distance: 167.5mm Start time: 14:47:40 - 30.04.2021 Stop time: 15:50:12 - 30.04.2021 file name: e127b_run0011.lmd avrg. rate: 310 Hz dead-time: 3% Now with blocking gate to get rid of multiple triggers. Dead time determination using: adt/bdt Threshold at ~10keV We have some external noise on the signal.
Efficiency calibration in the lab Detector: GEM1800 - 90 deg Source: 133Ba_high Distance: 167.5mm Start time: 14:34:51 - 30.04.2021 Stop time: 14:45:42 - 30.04.2021 file name: e127b_run0010.lmd avrg. rate: 2600 Hz dead-time: 16% Now with blocking gate to get rid of multiple triggers. Dead time determination using: adt/bdt Threshold at ~10keV We have some external noise on the signal.
Efficiency calibration in the lab Detector: GEM1800 - 90 deg Source: 241Am_high Distance: 167.5mm Start time: 13:56:33 - 30.04.2021 Stop time: 14:28:53 - 30.04.2021 file name: e127b_run0009.lmd avrg. rate: 600Hz dead-time: 4% Now with blocking gate to get rid of multiple triggers. Dead time determination using: adt/bdt Threshold at ~10keV We have some external noise on the signal.
crap run
Efficiency calibration in the lab Detector: GEM1800 - 90 deg Source: 210Pb Distance: 167.5mm Start time: 13:08:35 - 30.04.2021 Stop time: 13:49:56 - 30.04.2021 file name: e127b_run0008.lmd avrg. rate: 60Hz dead-time: 1% Now with blocking gate to get rid of multiple triggers. Dead time determination using: adt/bdt Threshold at ~10keV We have some external noise on the signal.
Efficiency calibration in the lab Detector: GEM1800 - 90 deg Source: 210Pb Distance: 167.5mm Start time: 11:04:03 - 30.04.2021 Stop time: 11:53:59 - 30.04.2021 file name: e127b_run0006.lmd avrg. rate: 50Hz dead-time: 1% Now with blocking gate to get rid of multiple triggers. Dead time determination using: adt/bdt Threshold at ~20keV Last seconds of run may not be usable: DAQ node2 has been deactivated shortly by mistake.
From the CFD of Xray1 (90deg) we get multiple trigger signals every ~5sec for unknown reasons. No hint from the preamp signals. The solution now is to have an extended blocking gate active in the trlo-config of node 2. There is now a trigger_stretch of 2500ns for all Xray triggers: trig_stretch(1) = 2500ns; trig_stretch(2) = 2500ns; trig_stretch(3) = 2500ns; This prevents the multiple triggers to reach the lmu (before_dt scalers) However, this will also lead to a very small loss of good signal triggers that overlay within 2.5 us. This has to be taken into account for deadtime determination.