thomas.shaffer@LIGO.ORG - posted 18:06, Sunday 29 January 2017 - last comment - 10:43, Monday 30 January 2017(33721)
Dust counts in PSL
More dust alarms with the wind in the PSL.
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Attached is a plot of the dust counts for the past 2 days, from the dust monitor in the PSL Laser room (101), in the PSL Anit-Room (102), and from the monitor between HAM1 and the PSL enclosure. The plots also contain the CS wind and temperature data for the same period. There does not appear to be a correlation of dust to temperature. There does appear to be a correlation of dust to wind, as TJ noted. Investigation plans are (1) install a dust monitor inside the closet where the makeup intake for the PSL resides for a few days to see what the particle counts of air coming into the PSL are, and (2). Check the filters on top of the PSL enclosure.
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