Description


Page : 1947

Sondrestrom Lidar Operation Log


Operator(s) : Matthew, Hayman, J.Thayer
Purpose : Observe Daytime Solar Background Levels. Operate with 532nm Rayleigh channel using high power and SP lasers. Test new timing of these channels.
Date(s) : 080509 - 080510
File(s) :
Comments : Reference timing 736 times 542.5ns for Rayleigh
Timing of S laser delay 3685 times 542.5ms (about 1.6 ms from Rayleigh trigger)
Timing of P laser delay 1570 times 542.5ns (+one chopper 4.167ms window)
(about 4.5 ms from Rayleigh trigger)
Logfile : l0805100.log

Setup:0


Page : 1948
[0]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=4.0mm
Rayleigh path attenuation=0dB
Dye System=Off
Sodium Field stop=0.5mm
Etalon=Out
Daystar=4A_In
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0


Page : 1949

Sondrestrom Lidar Operation Log


Log Sheet 1 of 1
Operators : Matthew, Hayman, J.Thayer
Date(s) : 080509 - 080510
File(s) :
FilesTime [UT]CommentsCntSOpe
19:28:58Start of experiment0JT
00:37:40Stopping data acq. on background.0JT
04:41:01Beginning operation w/ Rayleigh and SP lasers0
04:56:34Daystar has been moved out of path and Rayleigh has been0
converged
04:57:06S&P lasers timing has been changed from last night0
strange background shape could be afterpulsing
04:59:53Raman channel has started sza = 93.60
05:23:19Daystar in path - this improved the background of the S&P0
signals - signal induced noise is in previous data
05:50:22debugging laser power fluctuations0
05:59:51Big Sky laser 2 is intermittently pulsing - shut off all lasers0
07:02:040