During this measurement, I turned off the BPC control loops.
5:20 - 5:30 silent run
05:32:00 - 05:37:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white wide frequency, 2,000 cnt
05:37:00 - 05:42:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white wide frequency, 3,000 cnt
05:42:00 - 05:47:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white wide frequency, 4,000 cnt
05:47:00 - 05:52:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white wide frequency, 5,000 cnt
05:54:00 - 06:00:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 50 - 200, 3,000 cnt
06:00:00 - 06:05:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 50 - 200, 6,000 cnt
06:05:00 - 06:10:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 50 - 200, 9,000 cnt
06:10:00 - 06:16:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 200 - 300, 9,000 cnt
06:16:00 - 06:21:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 300 - 400, 9,000 cnt
06:21:00 - 06:26:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 400 - 500, 9,000 cnt
06:26:00 - 06:31:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 500 - 600, 9,000 cnt
06:31:00 - 06:36:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_7_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ
Mini shaker 8, white 600 - 700, 9,000 cnt
Short silent run BPC on during silent run and off after that
06:41:00 - 06:46:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_8_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ, K1:PEM-SEIS_OMC_GND_Z_OUT_DQ
Large shaker, white 1 - 50, 50,000 cnt (~3,000 cnt)
06:46:00 - 06:51:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_8_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ, K1:PEM-SEIS_OMC_GND_Z_OUT_DQ
Large shaker, white 50 - 100, 50,000 cnt (~3,000 cnt)
06:51:00 - 06:56:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_8_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ, K1:PEM-SEIS_OMC_GND_Z_OUT_DQ
Large shaker, white 100 - 150, 25,000 cnt (~1,500 cnt)
06:56:00 - 07:01:00
EXC channel : K1:PEM-EXCITATION_SR3_RACK_8_EXC
REF : K1:PEM-ACC_OMC_CHAMBER_OMCLEG_Z_OUT_DQ, K1:PEM-SEIS_OMC_GND_Z_OUT_DQ
Large shaker, white 150 - 200, 25,000 cnt (~1,500 cnt)
Fig.1. showed the mini shaker result 50 - 700 Hz excitation
Fig.2. showed the large shaker result 1 - 200 Hz excitation
This result was the maximum vibration for the band-limited white noise injection. (And I didn't take into account the sensor response function)
But in case of the unit of the m/s^2,
10^-4 m/s^s (below 250 Hz)
10^-3 m/s^2 (250 - 400 Hz)
when we turned off the BPC control
if we would like to check above 400 Hz, we need the re-measurement of the transfer function.
Transfer function of the OMC stack (V->V) can be found in JGWDoc17204
Fig.1. showed the unit of the (m/s^2) with the transfer function of the OMC stack (V->V)
Fig.2. showed the unit of the (m/s), multiplying 1/f with the transfer function of the OMC stack (V->V)
Fig.3. showed the unit of the (m), multiplying 1/f^2 with the transfer function of the OMC stack (V->V)
