Description


Page : 1910

Sondrestrom Lidar Operation Log


Operator(s) : Christian, Have, Pedersen, Christian, Have, Pedersen, E.Guðmundsson
Purpose : Adjusting HW plates. Testing system after replacing Flashlamps. Normal Daq.
Date(s) : 080209 - 080210
File(s) : L20080207_001 - L20080210_006
Comments : Its very cold outside and we have some frost accumulating on the beam roof
window. Seeing a lot of scattered light as a result.
Logfile : l0802100.log

Setup:0


Page : 1911
[Variables]
Rayleigh Power=530 mJ

[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 : 1912

Sondrestrom Lidar Operation Log


Log Sheet 1 of 3
Operators : Christian Have Pedersen
Date(s) : 080209 - 080209
File(s) : L20080207_001 - L20080209_002
FilesTime [UT]CommentsCntSOpe
L20080207_00119:59:47Start of experiment0
L20080207_00120:01:05Adjusting HF plates with background. So no normal data.0cp
L20080209_00120:51:56Had some problems with the SR430. That really delayed my0cp
progress. It seems we have 2 SR430 that has to be "checked"
Anyway, ran of daylight background, so the HF plates + Glan T. are
not as optimized as they could be. But still, the system is in
much much better shape now, after the replacement of
the flashlamps.
L20080209_00120:56:07Starting daq. on Raman channel now.4990cp
L20080209_00121:03:22With optimized HF plates it is possible to reach cnts at 600.4820cp
L20080209_00121:04:26We are now out of replacement flashlamps for the SP laser.0cp
L20080209_00121:12:14Checking if HW plates are tracking okay?4690cp
L20080209_00121:23:334650cp
L20080209_00121:24:244540cp
L20080209_00121:43:444290cp
L20080209_00121:49:09Think the HW plates are not tracking in the right direction4010cp
L20080209_00122:00:213840cp
L20080209_00122:07:123800cp
L20080209_00122:09:433660cp
L20080209_00122:20:193500cp
L20080209_00122:33:533450cp
L20080209_00122:44:45Will now stop the exp. temporarily to adjust HW plates.3340cp
L20080209_00123:03:172070cp
L20080209_00223:16:57Tweaking with the HW plates. Change directions on tracking.0cp

Logsheet:1


Page : 1913

Sondrestrom Lidar Operation Log


Log Sheet 2 of 3
Operators : Christian, Have, Pedersen, E.Guðmundsson
Date(s) : 080209 - 080210
File(s) : L20080209_002 - L20080210_003
FilesTime [UT]CommentsCntSOpe
L20080209_00223:25:12Counts are up again.4510cp
L20080209_00223:25:29Cabinet is closed again.4380cp
L20080209_00223:26:254430cp
L20080209_00223:32:544340cp
L20080209_00223:52:25observing afterpulsing on the Reyleigh1410cp
L20080209_00200:29:11moved the chopper up2930cp
L20080209_00201:03:54counts1780cp
L20080209_00201:06:44Rayleigh Convergence mirror adjusted1690cp
L20080210_00002:34:56counts2950cp
L20080210_00002:44:22counts3390cp
L20080210_00002:48:12counts3610cp
L20080210_00003:30:33counts5630EG
L20080210_00003:30:41chopper pushed up. starting to see signal induced noise5090EG
L20080210_00003:40:06Changed the common iris,m was not happy with the signal3940EG
L20080210_00003:52:54counts3940EG
L20080210_00003:54:34OOPS! forgot to close the rx. closed now3960EG
L20080210_00004:06:21counts4070EG
L20080210_00104:18:47counts3870EG
L20080210_00104:48:41counts3190EG
L20080210_00105:05:44counts2670EG
L20080210_00105:05:52looks like the plates are rotating the worng way??!!0EG
L20080210_00105:09:43restarting application2670EG
L20080210_00305:11:07taking data again with the TX plate rotating the other way3980EG
L20080210_00306:47:22while dealing with a problem on the radar the lidar failed2410EG

Logsheet:2


Page : 1914

Sondrestrom Lidar Operation Log


Log Sheet 3 of 3
Operators : E.Guðmundsson
Date(s) : 080210 - 080210
File(s) : L20080210_004 - L20080210_006
FilesTime [UT]CommentsCntSOpe
L20080210_00406:47:49The power supply of the SP laser had tripped, I have just now2940EG
recovered, have no idea at present for how long the lidar
has been down as well.
L20080210_00406:55:00counts2870EG
L20080210_00409:14:21counts2740EG
L20080210_00509:46:59counts2310EG
L20080210_00612:03:30End of experiment2730EG
16:37:330