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Reports until 12:30, Monday 16 August 2010
X1 SUS
betsy.weaver@LIGO.ORG - posted 12:30, Monday 16 August 2010 - last comment - 09:07, Tuesday 17 August 2010(130)
LHO Q1 Testing
This morning, Mark rearranged some +/- signs of gains here and there in an attempt to calibrate the output of Mo signals to motion of magnet repels/attractions.  Originally, we set all settings as per Brett's LASTI medms (E10000078), however this meant that the OSEM naming conventions were set as you viewed each chain face on.  Mark's changes are such that the QUAD is viewed entirely from the reaction side (similar to iLIGO) which makes driving it from an operations stand point a bit easier.  The Ro settings are the same as called out in the LASTI test plan.  On the Mo chain settings needed adjusting to do this. 

Damping appears to be working, but now DTT keeps giving a test timed-out error.  Calling Dave...


Comments related to this report
betsy.weaver@LIGO.ORG - 09:07, Tuesday 17 August 2010 (131)
Just after this, we also discovered that the MO RIGHT BOSEM started misbehaving after we shrouded the QUAD with foil in an attempt to slow air current motion.  The channel became very glitchy, even when disconnected from the BOSEM.  We tracked this down to the 25pin-25-pin gold cable - Richard is going to help us investigate this.  In the interim, we may switch the cable with the one from R0 so that we can keep moving on M0 measurements.
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