jeffrey.kissel@LIGO.ORG - posted 15:27, Monday 25 September 2017 - last comment - 11:13, Tuesday 26 September 2017(38773)
H1 ISI HAM3 Blade (Re)Tuned Mass Damper Results
J. Kissel H1 ISI HAM3's tuned mass dampers have been retuned to match the first bending mode of HAM ISI blade springs post spring-tip-damper install (~139 Hz). Attached are the results for all three TMDs (pg. 1: before and after tuning; pg. 2: after tuning, compared against the blades). The retuned TMDs will be installed tomorrow morning. Details of the measurement setup are as described in LHO aLOG 38741.
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J. Kissel, for J. Warner & H. Radkins These re-tuned TMDs have been installed this morning. Pictures of placement attached, where filenames correspond to each respective blade.
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