Description

Page : 1705

Sondrestrom Lidar Operation Log

Operator(s) : E.Guðmundsson
Purpose : Run coordinated with the IS Radar in meteor mode
Date(s) : 060103 - 060104
File(s) : L20060103_000 - L20060104_001
Comments : Changed dye and made some alignments on pumping of the sodium laser. Pump
beam seemed to have changed alignment a tad causing loss of pumping in preamp
and main amp dye cell. problem is fixed Dye laser energy now 95mJ with a good
beam profile.
Logfile : l0601030.log

Setup:0

Page : 1706
[Variables]
Rayleigh Power=490
Dye Power=95mJ

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

[1]
front end Iris=not_installed
Rayleigh System=On
Rayleigh Field stop=1.5mm
Rayleigh path attenuation=0dB
Dye System=On
Sodium Field stop=1.5mm
Etalon=Out
Daystar=Out
Polarizer=In
HalfWave Plates=Tracking
Rayleigh Filter=2:532(.5nm)
Rayleigh seeding=off

Logsheet:0

Page : 1707

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : E.Guðmundsson
Date(s) : 060103 - 060104
File(s) : L20060103_000 - L20060104_001

Files	Time [UT]	Comments	Cnt	S	Ope
L20060103_000	20:50:00	Start of experiment	0	0	EG
	21:10:22	focused on getting dye laser on line, had to change dye due		0	EG
		to low energy as well a do some minor pump beam alignments.
		looking good now with dye enregy at 95mJ./pulse and a really
		good looking profile.
L20060103_001	21:11:32	working on getting the Rayleigh system on line.		0	EG
	21:12:09	some sligh haze at ~7km		0	EG
L20060103_001	21:26:06	OOPS! bumped the sodium convegence mirror out of align.		0	EG
		while starting up the Rayleigh system. reconverged
L20060103_001	21:37:30	Reyligh system on line, incremented		0	EG
L20060103_001	21:37:46	counts		1	EG
L20060103_002	22:24:54	Something not ok with the Rayleigh system.		1	EG
L20060103_002	22:37:07	Looks like the Reyleigh PMT has bought it!		1	EG
		No signal as measured directly on the PMT. DC level high
		Supply current arround the normal 500uA. HV ok.
		Could be a short somewhere in the dynode chain
L20060103_002	23:16:26	restart data acq.	0	1	EG
L20060103_003	23:59:53	Skies getting worse		1	EG
L20060103_003	00:00:07	The Rayleigh system fault could be a bad amp?	0	1	EG
L20060103_003	00:39:48	Reyligh laser has been turned off-data acq on Rayleigh		1	EG
		lidar stopped.
L20060103_003	00:57:06	low altitude cloud cover getting denser, still able to see good	0	1	EG
		sodium profiles.
L20060104_001	04:16:27	End of experiment	0	1	EG