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.
59.54 0.00212 0.00007 26.34 0.00180 0.00011 53.16 0.00215 0.00007 79.61 0.00218 0.00008 81.00 0.00222 0.00007 34.95 0.00209 0.00007 35.87 0.00209 0.00009 30.80 0.00199 0.00006 46.54 0.00217 0.00009
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.