Description


Page : 185

Sondrestrom Lidar Operation Log


Operator(s) : E.Gudmundsson
Purpose : Routine data collection
Date(s) : 981027 - 981027
File(s) : L9810270 - L9810271
Comments :
Logfile : l9810270.log

Setup:0


Page : 186
[Variables]
Dye Power=71mJ
Rayleigh Power=560mJ

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

Logsheet:0


Page : 187

Sondrestrom Lidar Operation Log


Log Sheet 1 of 2
Operators : E.Gudmundsson
Date(s) : 981027 - 981027
File(s) : L9810270 - L9810271
FilesTime [UT]CommentsCntSOpe
L981027001:02:57Start of experiment25020EG
L981027001:04:48I'm having some problems with the dye system0EG
L981027001:19:59Pausing data collectionto swap HV units0EG
L981027001:21:33Resuming , no difference22780EG
L981027001:28:30Removed the gate from the sodium PMT, signal goes out22690EG
L981027001:31:11Put the Gate on again, adjusted convergence23170EG
L981027001:34:16Pausing and stopping the chopper22880EG
L981027001:34:17Resuming with chopper off running on line freq.23350EG
No differance in the signal
L981027001:36:15Pausing again to set the system on chopper again0EG
L981027001:37:37Resuming 24800EG
L981027001:50:17I'm baffled ??? The PMT currend is ok. everthing looks in 0EG
order. Can it be the PMT??
L981027002:09:10Rayleigh Convergence mirror adjusted21720EG
L981027002:13:12opened for the PMT filter wheel in open position, ahha!21300EG
L981027002:17:24incremented filenumber0EG
L981027102:17:40The wavelength was way off around half a nanometer!21760EG
During initial tuning the wavemeter had jumped down ca 0.5
nm but then up again. When I left it the first time it was
dead on (or so I thought) but when checking now again the
display indicated 588.670nm! Tunied again and the same
wavelength jumps were present during tuning??
The wavemeter is stable now at 589.158nm now
L981027102:57:06This was sudden! Clouds all over the place! closing down20EG

Logsheet:1


Page : 188

Sondrestrom Lidar Operation Log


Log Sheet 2 of 2
Operators : E.Gudmundsson
Date(s) : 981027 - 981027
File(s) : L9810271 - L9810271
FilesTime [UT]CommentsCntSOpe
L981027102:58:12End of experiment20EG