Recent results on biofouling and optical background

1
Recent results on bio-fouling and optical
background
Foreseen operations from 23rd to 26th of April

• Recovery of bio-fouling measurement line
• Recovery of K40 line

But, very bad weather
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Counting rates
? Gaussian fit on the peak
? 30.45 kHz
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Counting rates
The full period

• In red, the counting rates

• In blue, the dead time time spent above 200 kHz

Spring 2003
2831 and 1113.5 kHz .2 and .1
Baseline slightly lower but less stable !
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Correlation baseline/current
Reminder Test 1.15 Summer 2002
And in Spring 2003?
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Sea current at KM4, from April 2003 to November
2003
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Reminder of the acquisition schema
Details week by week
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Week 1
Week 3