Description

Page : 2036

Sondrestrom Lidar Operation Log

Operator(s) : Katelynn, Greer, Katelynn Greer
Purpose : Routine Data Collection and Power fluctuation experiment
Date(s) : 080720 - 080721
File(s) : L20080720_003 - L20080721_000
Comments : Mostly this was routine data collection, but I have a suspision of some kind of
influence on the 532 channel by the hv Raman PMT; we shall see if this is evident
is post-analysis. Later I took data even though it became cloudy, I had hoped it
would clear again but it did not.
Logfile : l0807210.log

Setup:0

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

Logsheet:0

Page : 2038

Sondrestrom Lidar Operation Log

Log Sheet 1 of 2
Operators : Katelynn Greer
Date(s) : 080720 - 080720
File(s) : L20080720_003 - L20080720_003

Files	Time [UT]	Comments	Cnt	S	Ope
L20080720_003	21:19:35	Start of experiment		0	KRG
		SP energy: 5150 mJ; Counts = 5253
		Big Sky 1: 0.70; Big Sky 2: 0.70
		Raman hv = 0.725
		Tracking the sun, no flipping
	21:21:22		26	0	KRG
	21:30:32		9	0	KRG
	21:47:56	I think we may have signal induced noise, but I am	11	0	KRG
		not sure how to fix this
	21:49:09	I am going to try and converge the system and see if		0	KRG
		that helps
	21:51:43	The system seems pretty well converged		0	KRG
	22:19:43	Changing the plane of polarization		0	KRG
		Oops, forgot to turn on the Big Sky lasers again
	22:25:34	Plane changed and all lasers on		0	KRG
		Tracking the sun
	22:54:36		-10	0	KRG
	23:12:46		2	0	KRG
	23:25:19	I am curious about what will happen to the 532 signal if		0	KRG
		I turn off the Raman hv PMT
	23:26:42	Raman PMT turned off		0	KRG
	23:34:51	Sky Conditions have deteriorated		0	KRG
L20080720_003	23:44:15	Interesting, Turning the Raman PMT on and		0	KRG
		Changing the plane of polarization

Logsheet:1

Page : 2039

Sondrestrom Lidar Operation Log

Log Sheet 2 of 2
Operators : Katelynn Greer
Date(s) : 080720 - 080721
File(s) : L20080720_004 - L20080721_000

Files	Time [UT]	Comments	Cnt	S	Ope
L20080720_004	23:54:06	I'm hoping the sky conditions will improve, so far the		0	KRG
		clouds have been thickening
	23:55:57	Further reduced Raman hv to 0.700	16	0	KRG
L20080720_004	00:15:58		30	0	KRG
	00:21:29	Christian is adjusting the iris to see if this improves the		0	KRG
		shape of the 532 signal
	00:23:03	Iris setting on the secondary equal to 7.1		0	KRG
	00:31:44	Further reducing the iris setting to 7.0		0	KRG
	01:13:17	Plane of polarization changed	-4	0	KRG
L20080720_004	01:43:45	Turning off the Raman PMT again	13	0	KRG
	02:05:55	Turning the Raman PMT on again		0	KRG
L20080720_004	02:17:20	Changing plane of polarization		0	KRG
	02:23:13	There is a high cirrus cloud in view		0	KRG
	02:39:08	Sky conditions have deteriorated	1	0	KRG
L20080721_000	03:25:58	The sky has become too bad for Steve's experiment		0	KRG
		I am now just going to run the flipping routine and see if
		the sky will clear
	04:07:19		15	0	KRG
	04:24:02		0	0	KRG
	04:45:08	It is no good, I will end the experiment!		0	KRG
L20080721_000	04:46:18	End of experiment		0	KRG