Description


Page : 1907

Sondrestrom Lidar Operation Log


Operator(s) : Christian Have Pedersen
Purpose : Daq on 532nm and 607nm channel.
Date(s) : 080207 - 080207
File(s) : L20080207_000 - L20080207_001
Comments : Output power is low, 450mJ. This is due to oscillator unit is down on power.
The flashlamp will be replaced before next experiment. Hopefully, this will solved
the problem with low output power.
Experiment ended after 2 hours because of snowfall.
Logfile : L0802070.log

Setup:0


Page : 1908
[Variables]
Rayleigh Power=450-470mJ

[0]
front end Iris=1.5mm
Rayleigh System=On
Rayleigh Field stop=0.5mm
Rayleigh path attenuation=0dB
Dye System=Off
Sodium Field stop=0.5mm
Etalon=Out
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1909

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : Christian Have Pedersen
Date(s) : 080207 - 080207
File(s) : L20080207_000 - L20080207_001
FilesTime [UT]CommentsCntSOpe
L20080207_00021:13:12Start of experiment00
L20080207_00121:14:53Output power low again today. Time was used today, 0cp
troubleshooting the laser. It is clear that the oscillator
is not producing the expected level of power. After this
experiment, the oscillator flash lamp will be inspected and
probably replaced
L20080207_00121:20:28The halfwave flip function was tested today as well.120cp
L20080207_00121:24:24Will use the flip function at the end of this experiment100cp
L20080207_00121:29:19Profile is reduced in height.0cp
L20080207_00121:32:24No clouds. But it is clear that a lot of small snow dust ?0cp
is in the air and in the path of the beam.13
L20080207_00121:53:24Halfwave plates are tracking at the moment.70cp
L20080207_00123:05:35Been tweaking with Eggert. There was an alignment problem60cp
in the RX path. Relay a bit skew. Could not fix it, because
it has started to snow. No more exp tonigth.
Need to look at oscillator unit tomorrow.
L20080207_00123:07:23End of experiment00cp