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Message ID: 222     Entry time: Tue Apr 12 21:56:54 2022
Author: Volker, David, Pierre-Michel & Danyal, Alexandre, Sebastian 
Category: General 
Subject: new laser wavelength scan range 321.62 - 321.10 nm 
New wavelength scan range is 321.62 - 321.10 nm. Before the new scan range (compare old scan range in Entry 215) was applied,
the cooler settings were slightly modified. Current was changed from 50 mA to 40 mA, correction voltage was changed from 3943 V to 3948 V. Additionally, the positions
of scraper NA was changed from -10 mm to -8 mm and scraper NI from +10 mm to +8 mm.


TimeSIS-intensitycooler-HVLMD-DAQ2 file nr LMD-DAQ1 file nr scan range(nm)step width(nm)dwell time(s)particles countedcomments
21:57 1.55e9 209621 0226-0227 7962 321.62 - 321.10 0.002 5s 7835
22:54 1.4e9 209612 0228 7963 321.62 - 321.10 0.002 5s 3326 PMT south voltage reduced to 2400 V before run, Threshold now 80, Cooler Voltage changed to 209628 V at 23:19
23:45 2.0e9 209628 0229-0230 7964 321.62 - 321.10 0.002 5s 8560
00:34 1.7e9 209626 0231 7965 321.62 - 321.10 0.002 5s 7169
01:29 1.1e9 209624 0232 7966 321.62 - 321.10 0.002 5s 6412
02:19 1.75e9 209626 0233 7967 321.62 - 321.10 0.002 5s 7590
03:06 1.6e9 209630 0234 7968 321.62 - 321.10 0.002 5s 6329
03:58 1.7e9 209629 0235-0236 7969 321.62 - 321.10 0.002 5s 7710
04:43 1.8e9 209629 0237 7970 321.62 - 321.10 0.002 5s Electron cooler went red @04:48
05:48 1.5e9 209623 0238 7971 321.62 - 321.10 0.002 5s 9420
06:42 1.6e9 209616 0239 7972 321.62 - 321.10 0.002 5s 8250
07:32 1.7e9 209621 0240 7974 321.62 - 321.10 0.002 5s 8840 file 7943 was started accidentally too early and killed
08:22 1.85e9 209622 0241 7975 321.62 - 321.10 0.002 5s ABORTED: laser did not start scanning
08:33 1.90e9 209624 0242-243 7976 321.62 - 321.10 0.002 5s 9955
09:23 1.7e9 209624 0244-0245 7977 321.62 - 321.10 0.002 5s 9021 09:50 Ecooler 12V drop for a few seconds; 9:52 again 12V E-cooler drop
10:12 1.85e9 20962x 0246 7978 321.62 - 321.10 0.002 5s 8067
11:10 1.7e9 209615 0247-248 7979 321.62 - 321.10 0.002 5s 8905
11:59 1.94e9 209612 0249-0250 7980 321.62 - 321.10 0.002 5s 8203 drop in E-cooler voltage of 8V at about 12:16 (before there was a slow increase from .612 to .620)
12:48 2.0e9 209612 0251-0252 7981 321.62 - 321.10 0.002 5s 8018 E-cooler is not very stable (varies between .604 and .613) ; ~13:18 E-Cooler 18V jump to 209622V
13:36 1.7e9 209621 0253 7982 321.62 - 321.10 0.002 5s 8170
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