jeffrey.garcia@LIGO.ORG - posted 00:22, Friday 30 March 2012 - last comment - 13:29, Monday 11 November 2013(2507)
H2 SUS ETMY impulse response measurements
The attached pdf contains plots of the accelerometer response from B&K impact hammer tests. There were six locations on the ETMY sleeve structure selected for impacts. Each plot displays the response in each degree of freedom (X,Y,Z) of the accelerometer. The orientation of the accelerometer was such that the X direction is vertically up the structure, and the Y,Z directions in the horizontal plane of the optic. Each measurement has five averages with 0.5Hz resolution. Data: '~/sus/trunk/QUAD/H2/ETMY/Common/VA_Testing/2012_03_26_h2etmy_hammer_test/' Plots: '~/2012_03_26_h2etmy_hammer_test/plots/'
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Locations are described as below (note from Jeff G left in folder containing original pulse files) :
location 1 : between test mass and tms. On tube side hitting cage corner towards roll up door
location 2 : on roll up door side hitting on corner of cage towards acceleromoter
location 3 : downwards on cross brace on test mass side in front of PUM
location 4 : upwards on cross brace on reaction side
location 5 : reaction mass, roll up door corner hitting inwards near the top
location 6 : cross brace on side of PUM by the roll up door