Displaying report 1-1 of 1.
Reports until 16:35, Thursday 08 January 2015
H1 SUS
betsy.weaver@LIGO.ORG - posted 16:35, Thursday 08 January 2015 (15953)
More on QUAD earthquake stops

Attached is a trend of the average LVEA temperature showing the daily ~0.2 deg C temp swing.  The plot is for the month of August 2014 when we were finishing installation of the vertex.  When we are vented and adjusting the EQ stops of a suspension we may see a ~0.06mm change in the gap of the EQ stops around the barrels of the PUM and Test Masses in the QUAD daily.   (0.2degC change x ~0.3mm/1degC temp change = 0.06mm)

This is pretty negligible.  Phew.  However, this temp change pitches the suspension, so now I'll try to find out by how much.  To be continued...

Images attached to this report
Displaying report 1-1 of 1.