Description

Page : 537

Sondrestrom Lidar Operation Log

Operator(s) : E.Guðmundsson, A.Merkel
Purpose : data set used for tweeking the reciever. Testing the reciever after the installation of the mirror mount
Date(s) : 000525 - 000525
File(s) : L5250 - L5252
Comments : We started data taking at 2:02:37 but we were checking the count rate with the
new
folding mirror in the reciever. The last mirror before the PMT in the 532
channel. In the time between the start of data and the first data file increment
several changes were done to try and characterize the count rate. The PMTs were
turned off, the half waveplate alignment of the transmitter was checked to be ok.
We knew that the mirror may have an effect on the count rate but we went
through other checks to make sure that it was just the mirror. The count rate is
down from 9000 to 2000 with the addition of the mirror. This is not a good data
set for science purposes
Logfile : l0005250.log

Setup:0

Page : 538
[Variables]
Dye Power=100 mJ
Rayleigh Power=540 mJ

[0]
Iris=min_opening
Rayleigh System=On
Dye System=On
Daystar=Out
Polarizer=In
HalfWave Plates=In
Rayleigh Filter=2:532(.5nm)

Logsheet:0

Page : 539

Sondrestrom Lidar Operation Log

Log Sheet 1 of 1
Operators : E.Guðmundsson, A.Merkel
Date(s) : 000525 - 000525
File(s) : L5250 - L5252

Files	Time [UT]	Comments	Cnt	S	Ope
L5250	02:02:35	Start of experiment		0	AM

L5251	03:14:46	Increment file		0	AM
L5251	03:25:40	Gained signal by tweeking HG	2535	0	AM
	03:27:37	converged Dye laser	2783	0	AM
L5251	03:39:42	Paused data collection to change to the old mirror mount	2682	0	AM
	04:09:27	Contunued after changing mirror, using laser as reference		0	AM
L5252	04:54:31	Calibrated mirror setup, now running new data		0
	04:58:35	Still tweeking reciever. Not a good data set for science		0
	05:26:38	Stoping taking data from Sodium channel		0
	05:32:48	Taking Sodium data again		0
	05:46:52	End of experiment		0