Reports until 15:30, Wednesday 25 June 2014
H1 SEI (INS)
hugh.radkins@LIGO.ORG - posted 15:30, Wednesday 25 June 2014 (12482)
WBSC3 ITMX SEI HEPI Adjustments, Optical Table Level & IPS Calibration

Find attached the notes from the adjustments to HEPI in response to IAS.

Also see the Auto Optical Level observations showing the level of the ISI Optical Table (<0.007" runout (+-0.0035) on OT) is well within spec.

Before reattaching the Actuators we got the ITMX into position with HEPI.  We were ?? X 0.2mm +Y, 0.0 Z, 30urad RZ.

After attaching the Actuators the RZ shifted to -80urads.  The DIs are almost useless at this level and a slight bump on the HEPI can shift it at this scale it seems.  So I've just used the RZ position loop to hold this.  We've got a 70urad  target in the ITMX RZ CART BIAS Loop; this holds the IAS yaw to <10urads.

While we were at it, we slapped a few more cart bias numbers in (could use a few more to larger values) to check the IPS cartesian calibration--Looks pretty good but like I said, a few more larger numbers would be informative.  There may be some divergence at the extremes of this data.  Attached below is a graph of IPS location values and IAS collimating LASER readouts.

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