Description


Page : 333

Sondrestrom Lidar Operation Log


Operator(s) : E.Gudmundsson, J.Jørgensen
Purpose : Data collection in conjunction with the IS radar. Brent Watkins run
Date(s) : 990905 - 990905
File(s) : L9908154 - L9909055
Comments :
Logfile : L9909040.log

Setup:0


Page : 334
[Variables]
Dye Power=85mJ
Rayleigh Power=560mJ

[0]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=On
Daystar=Out
Polerizer=In
HalfWave Plates=Tracking
Filter Wheel=2:532(.5nm)

[1]
90% PMT Iris=not_installed
Rayleigh System=On
Dye System=Off
Daystar=In
Polerizer=In
HalfWave Plates=Tracking
Filter Wheel=3:Open

Logsheet:0


Page : 335

Sondrestrom Lidar Operation Log


Log Sheet 1 of 3
Operators : E.Gudmundsson
Date(s) : 990905 - 990905
File(s) : L9908154 - L9909050
FilesTime [UT]CommentsCntSOpe
L990815400:00:18Start of experiment50100
L990815400:19:19Sodium Convergence mirror adjusted38540
L990904000:55:41Sodium Convergence mirror adjusted29880
L990904000:55:51Rayleigh HG adjusted0
L990904000:55:56Had a water level interlock on the sodium laser, corrected 0
the problem
L990904001:33:08Looks like the sodium tweeking is finally in place!0
L990904001:33:55I'm seeing realy good sodium counts41250
L990904001:56:03Looked like the sodium counts fell after the last aurora0
arc passed, looks like it's recovering. Did not touch anything
L990904001:57:04Thin hase up there now34060
L990904205:38:59Sodium Convergence mirror adjusted40900
L990904206:36:52The IS radar has been shut down38180
L990904206:37:13Rayleigh HG adjusted38180
L990904206:43:19Closed the iris half way to see the impact on the sodium counts38970
L990904206:44:47No impact seen, closing further38830
L990904206:49:13Small impact seen on sodium counts, continuing the run 39060
L990904206:50:32with this setting until sodium shuttdown39060
L990904207:17:13Sodium Convergence mirror adjusted37960
L990904308:12:40Closing the iris down to minimum59470
L990904308:15:57Rayleigh Convergence mirror adjusted23620
L990904308:19:41Shut down the sodium system52370
L990904308:20:48incremented52630
L990905008:23:27We still have a small noise slope on the Rayleigh 53320

Logsheet:1


Page : 336

Sondrestrom Lidar Operation Log


Log Sheet 2 of 3
Operators : E.Gudmundsson, J.Jørgensen
Date(s) : 990905 - 990905
File(s) : L9909050 - L9909053
FilesTime [UT]CommentsCntSOpe
L990905008:24:16The source is the gating of the PMT. I'm going to 53880EG
turn the gating off to see 5388EG
L990905008:35:26The chopper phase adjustment was wrong!0EG
L990905008:37:01Looks like I was right. The gate rise time is to long0EG
L990905008:38:47Running with no gating of the PMT's now, just chopper0EG
L990905008:39:47Changing setup, running with daystar now55070EG
L990905008:42:03incremented1EG
L990905108:48:10My noise levels are way to high4931EG
L990905108:49:09tweeking halfwave plates1EG
L990905108:55:56The half wave plates are not rotating!!1EG
L990905108:56:29Shutting down the software and reestarting5151EG
L990905209:12:14Starting again the half wave controller was on wrong setting1EG
L990905209:12:50incremented21871EG
L990905209:49:56SZA=81 S/N=416/544241EG
L990905210:12:44SZA=78.95 S/N=490/644811JJ
L990905210:31:40SZA=77.05 S/N=513/715101JJ
L990905211:01:35SZA=74.27 S/N=556/855361JJ
L990905211:23:14Funny jump in background5681JJ
L990905211:27:16Maybe caused by some flimzy clouds overhead1JJ
L990905211:35:58SZA=71.27 S/N=587/941JJ
L990905312:03:09SZA=68.97 S/N=551/1055461JJ
L990905312:30:14Something went wrong with laser ???1JJ
L990905312:32:19Seems like we are getting no trigger signals1JJ
L990905312:33:19Switching to line brings trigger back. Chopper bad?1JJ

Logsheet:2


Page : 337

Sondrestrom Lidar Operation Log


Log Sheet 3 of 3
Operators : J.Jørgensen
Date(s) : 990905 - 990905
File(s) : L9909053 - L9909055
FilesTime [UT]CommentsCntSOpe
L990905312:42:14Running again. Wriggled some of the BNC cables going from1JJ
the chopper to the timing unit which seemed to fix the
problem for now...
L990905312:43:24Filenumber incremented1JJ
L990905412:48:25SZA=65.70 S/N=552/2245071JJ
L990905412:58:08More flimzy clouds1JJ
L990905412:58:22SZA=64.99 S/N=585/1205571JJ
L990905413:35:08SZA=62.92 S/N=512/234, Clouds1JJ
L990905414:02:35SZA=61.74 S/N=557/1345611JJ
L990905414:36:52SZA=60.69 S/N=492/1425021JJ
L990905415:02:54SZA=60.27 S/N=491/1485191JJ
L990905515:38:01SZA=60.22 S/N=559/1545221JJ
L990905516:13:04SZA=60.78 S/N=604/1535731JJ
L990905517:08:39SZA=62.77 S/N=643/1386211JJ
L990905517:09:20Well past local noon, going to shut down1JJ
L990905517:10:39End of experiment1JJ