This is the documentation of the source tests with the 2nd micron DSSSD of 2nd generation (label 3288-17, thickness 529um)
The detector is put into vacuum (~5e-6 mbar) in our test chamber. The source is positioned a few cm above (see fotos).
The Bayard-Alpert Sensor in the chamber has to be deactivated, otherwise the light emission will increase the noise on the DSSSD strongly and reduce its performance.
Additionally the current and voltage from the CAEN HV is monitored with the vulom scalers: ch.13(Icool) = current; ch.14(Ucool) = voltage.
Source: mixes alpha [239Pu, 241Am, 244Cm]
File directory: lxg1275:/data.local3/test_data_2020/
QuickTest files: si2_test_mixed_source[X].root
lmd files: Si2_run[XXX].lmd
DAQ Settings:
MADC gate : 0 delay, 5000ns width
MSCF shaping: 2 us
trlo config : e127.trlo (trigger=1/tpat=1 for Si, trigger=11 for vulom_scaler)
LMD runs:
-----------------------------
Si2_run001.lmd
Start: Fri 23.10.2020 16:19
Stop: Mon 26.10.2020 8:36
File-Size: 20GB
Events: ~53M
comment:
source roughly centered
CAEN HV scalers not connected
-----------------------------
Si2_run002.lmd
Start: Tue 27.10.2020 16:01
Stop: Wed 28.10.2020 13:26
File-Size: 12GB
Events: ~32M
comment:
source in one corner (x1, y1, see foto)
scalers should be connected now
current monitor range set to LOW
@start det_current=140nA det_voltage=90V
@end det_current=143nA det_voltage=90V
-----------------------------
Si2_run003.lmd
Start: Wed 28.10.2020 13:30
Stop: Wed 28.10.2020 13:31
File-Size:
Events:
comment:
ramping of det. voltage for scaler/U-F-Converter test
source in one corner (see foto)
scalers should be connected now
current monitor range set to LOW
@start det_current=140nA det_voltage=90V
-----------------------------
Si2_run004.lmd
Start: Tue 24.11.2020 12:50
Stop: Tue 24.11.2020
File-Size:
Events:
comment:
source in one corner (x16, y16, see foto)
@start det_current=138nA det_voltage=90V
@end det_current=nA det_voltage=90V
-----------------------------
Si2_run005.lmd
Start: Tue 24.11.2020 14:57
Stop: Tue 24.11.2020 15:11
File-Size:
Events:
comment:
source in one corner (x1, y16, see foto)
@start det_current=144nA det_voltage=90V
@end det_current=nA det_voltage=90V
-----------------------------
Si2_run006.lmd
Start: Tue 24.11.2020 15:24
Stop: Tue 24.11.2020
File-Size:
Events:
comment:
source in one corner (x1, y16, see foto)
Si_X & Si_Y cabling to MADC_0 and TDC_0 exchanged to get right order of channels/orientation
@start det_current=144nA det_voltage=90V
@end det_current=nA det_voltage=90V |