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Reports until 12:39, Tuesday 01 July 2014
X1 SUS
arnaud.pele@LIGO.ORG - posted 12:39, Tuesday 01 July 2014 - last comment - 09:31, Wednesday 02 July 2014(12546)
QUAD08 after blades change

The latest results from the X1 QUAD08 tfs -after Joe Odel/Jeff B/Andres R reworked on the quad to replace the top mass blades and rebalance the masses- are attached below and compared with the previous measurements from last week. This work was initiated to resolve the 10% discrepancy seen between the measured and modeled 2nd pitch mode frequency (1.32Hz) cf 5th page of 1st attachment. Though, the comparison shows this mode has stayed unchanged, except for a new pitch to vertical coupling at 2.25Hz.

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betsy.weaver@LIGO.ORG - 09:31, Wednesday 02 July 2014 (12585)

And here's Arnaud's plot comparing this Q8 M0 TF to other QUADs of the same species.

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