Description


Page : 1467

Sondrestrom Lidar Operation Log


Operator(s) : E.Guðmundsson
Purpose : Simultainious data collection on the new IR channel and the attenuated 532nm channel
Date(s) : 040611 - 040611
File(s) : L20040611_001 - L20040611_002
Comments : Overcast with some holes.
Run summary: No good results obtained due to cloud cover.
Logfile : l0406110.log

Setup:0


Page : 1468
[Variables]
Rayleigh Power=420mJ

[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=2.0mm
Rayleigh path attenuation=20dB
Dye System=Off
Sodium Field stop=0.5mm
Etalon=Out
Daystar=8A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1469

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : E.Guðmundsson
Date(s) : 040611 - 040611
File(s) : L20040611_001 - L20040611_002
FilesTime [UT]CommentsCntSOpe
L20040611_00115:18:08Start of experiment0EG
L20040611_00115:23:36Started taking data on the IR, HV not turned on yet-20EG
intermittent cumulus with holes in between
L20040611_00115:24:14reduced the apperture of the IR to a bit above minimum20EG
apperture
L20040611_00115:39:22halfwaveplate mode now manual tracking30EG
L20040611_00115:52:53HV on the IR channel is now at 650V iris still a tad above-10EG
fully open
L20040611_00115:53:34Avarage noise counts are 1/320E-9*6/15 ~1MHz0EG
(15sec integration 320ns bin width ) noise counts~5
L20040611_00115:55:35Still overcast but I'm hopeful that the cloudcover will break-10EG
up.
L20040611_00115:58:02Rayleigh 532nm Tx waveplate adjusted for maximum 0EG
return.
L20040611_00117:33:50Shut of IR HV power supply due to high noise counts0EG
L20040611_00218:14:04HV reduced to 625V-10EG
L20040611_00218:49:52This is not getting me any results - have to wait for better0EG
skies
L20040611_00218:57:04End of experiment20EG