PDF showing each fitting: https://www.dropbox.com/scl/fi/h87b1kxmtvxrobqcc8f35/each_fit.pdf?rlkey=xtrz5wmwzb5t0a5zfgih8tmb0&st=579p0hzm&dl=0
Takaaki Yokozawa, Hiroshi Takaba, Dan Chen
9:00–17:00 JST
We analyzed the violin mode peaks using approximately 6000 seconds of data starting from GPS time 1433982518 (2025-06-15).
For the 1st, 2nd, and 3rd violin mode frequency regions, peaks were searched and fitted individually. The fitting results are attached.
During visual inspection of the fitting results, obviously incorrect fittings were marked with “X.”
Most of the fitted peaks show Q factors around 1e5. In the 1st mode region, there are three peaks with significantly higher Q values (they look too high...), which are currently under investigation.
The mirror temperatures at the time of measurement were as follows:
Temperature [K]: (IX, EX, IY, EY) = (92, 49, 42, 58)
A PDF showing each fitting result is also attached.
PDF showing each fitting: https://www.dropbox.com/scl/fi/h87b1kxmtvxrobqcc8f35/each_fit.pdf?rlkey=xtrz5wmwzb5t0a5zfgih8tmb0&st=579p0hzm&dl=0
I just compared BNS and IRXY trans Norm for the recent 22 days as Fig.1
Do you find any more characteristic points?
N2 increased and decreased as Fig.1
Plot with "K1:CRY-TEMPERATURE_IX_4K_REF2_4K_HEAD".
With Shingo Hido
K1:VAC-PRESSURE_X_00 is going up.
Plot with "K1:CRY-TEMPERATURE_IX_4K_REF2_4K_HEAD".
N2 increased and decreased as Fig.1
Operators name: Takaaki Yokozawa, Hiroshi Takaba, Dan Chen
Shift time: 9-17 (JST)
Check Items:
IFO was used by CAL group during the day.
After a meeting between Miyoki-san, Ushiba-san, Sawada-san and CAL group, the state is planned to be set to OBSERVING.
Finally, I raised CFC_LATCH bit and moved from CALIB_NOT_READY to READY.
Differences in foton filters shown in Fig.1 are related to klog#34424 (K1:CAL-CS_DARM_*) and klog#34425 (K1:CAL-CS_SUM_{MICH,PRCL}_*).
Differences in SDF tables shown in Fig.2 are related to klog#34411 (K1:CAL-MEAS_*) and klog#34426 (K1:CAL-CS_TDEP_*).
There is no change in guardian code and model files as shown in Fig.3 and Fig.4, respectively.
Channels in JGW-L2314962
It's related to klog#34425.
They were updated based on the latest value of optical gain of DARM and ETMX actuator efficiencies in klog#34424.
Changes were accepted on observation.snap (Fig.1), down.snap (Fig.2), and safe.snap (Fig.3).
Finally, numerical rounding errors were reverted after re-loading observation.snap as shown in Fig.4.
MICH and PRCL calibrations were updated by using the values in klog#34423 as follows.
- 1/H_MICH [K1:CAL-CS_SUM_MICH_ERR_FM1]
- A_BS(1) [K1:CAL-CS_SUM_MICH_BS_TM_FM1]
- 1/H_PRCL [K1:CAL-CS_SUM_PRCL_ERR_FM1]
- A_PRM [K1:CAL-CS_SUM_PRCL_PRM_TM_FM1]
Actual changes were shown in Fig.1.
After then line tracking parameters were also updated based on the DARM calibration parameters in klog#34424.
Updated EPICS records can be found in JGW-L2314962.
They were accepted on {observation,down,safe}.snap in klog#34426.
I estimated and updated the parameters related DARM (Fig.1).
There is no strange variations (Fig2).
H_etmxtm = 3.839154366e-14 at 10Hz (0.23% from previous measurements)
H_etmxim = 1.535938431e-14 at 10Hz (-1.9% from previous measurements)
Optical_gain = 2.129473235e12 (0.07% from previous measurements)
Cavity_pole = 18.127587391 Hz (-0.76% from previous measurements)
Previous parameters are listed in klog#34393.
I investigated the variation in optical gain (specifically, the gain of the sensing function) between 0602 full calibration (klog#34033) and 0630 full calibration (Fig.3).
A decreasing trend was observed from the measurement date (June 2) toward June 20, followed by an increase thereafter.
Since a continuous change can be observed on this time scale (although further data accumulation is needed),
there is a possibility that calibration lines could not only account for statistical fluctuations, but also help suppress systematic errors by correcting for actual variations.
Free-swing | XPcal | Diff. from prev. | Figures | |
---|---|---|---|---|
H_mich | 1.115e+09 +/- 0.0067e+09 | N/A | -2.8% | Fig.1 |
A_BS(0) | 6.180e-11 +/- 0.039e-13 | 6.000e-11 +/- 0.048e-11 | +0.8% (Free-swing) | Fig.2-3 (for Free-swing) |
A_ITMX(0)/A_BS(0) | 0.04956 +/- 0.00038 | same as left | -0.2% | Fig.4-5 |
A_ITMX(0) | 3.063e-12 +/- 0.030e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ITMX(3)/A_ITMX(0) | 1.1292 +/- 0.0018 | same as left | +0.1% | Fig.6-7 |
A_ITMX(3) | 3.459e-12 +/- 0.035e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ETMX_TM/A_ITMX(3) | 1.1456 +/- 0.0011 | same as left | -0.9% | Fig.8-9 |
A_ETMX_TM | 3.962e-12 +/- 0.040e-12 | 3.8574e-12 +/- 0.0033e-12 | -0.6% (XPcal) | Fig.10-11 (for XPcal) |
A_ETMX_IM/A_ETMX_TM | 42.1 +/- 2.4 | N/A | -7.8% | Fig.12-13 |
A_ETMX_IM | 1.670e-10 +/- 0.097e-10 | 1.68e-10 +/- 0.10 | -8.7% (XPcal) | Fig.14-15 (for XPcal) |
H_DARM | 2.1246e+12 +/- 0.023e+12 | 2.1875e+12 +/-0.0073e+12 | -3.1% (XPcal) | Fig.16-19 => Fig.1-4 in this post |
1/H_DARM | 4.709e-13 +/- 0.050e-13 | 4.572e-13 +/- 0.015e-13 | N/A | |
A_BS(1)/A_BS(0) | 1.0423 +/- 0.0048 | same as left | +0.5% (Free-swing) | Fig.20-21 |
A_BS(1) | 6.441e-11 +/- 0.050e-11 | 6.254e-11 +/- 0.057e-11 | +1.3% (Free-swing) | |
H_MICH | 4.628e+08 +/- 0.036e+08 | 4.767e+08 +/- 0.044e+08 | +9.8% (Free-swing) | Fig.22-25 |
1/H_MICH | 2.161e-09 +/- 0.017e-09 | 2.098e-09 +/- 0.019e-09 | N/A | |
A_PRM(1)/A_BS(1) | 27.21 +/- 0.12 | same as left | +1.0% | Fig.26-27 |
M2P FF gain | 0.03675 +/- 0.00016 | same as left | N/A | |
A_PRM | 8.764e-10 +/- 0.078e-10 | 8.509e-10 +/- 0.086e-10 | +2.3% (Free-swing) | |
H_PRCL | 2.057e+09 +/- 0.018e+09 | 2.118e+09 +/- 0.021e+09 | +4.3% (Free-swing) | Fig.28-31 |
1/H_PRCL | 4.862e-10 +/- 0.043e-10 | 4.720e-10 +/- 0.048e-10 | N/A | |
A_ITMX(3)/A_BS(1) | 0.05369 +/- 0.00049 | same as left | N/A | |
M2D FF gain | 18.6 +/- 3.2 | same as left | N/A | |
YPCAL/XPCAL | N/A | 0.98474 +/- 0.00080 | -0.2% | Fig.5-6 in this post |
In last night, I reduced the voltage to heaters for IY and EX IM by ~ 0.3V to reduce the temperature.
Fig.1 shows the relation between IM temperatures and BNS sensitivity. IY temp kept increasing by ~ 1K. On the other hand, the EX temp decreased by 1K.
Fig.2 shows a longer trend. It is difficult to find remarkable relations.
The best BNS sensitivity is 7.35Mpc just before the lock loss. We need calibration?
Free-swing | XPcal | Diff. from prev. | Figures | |
---|---|---|---|---|
H_mich | 1.115e+09 +/- 0.0067e+09 | N/A | -2.8% | Fig.1 |
A_BS(0) | 6.180e-11 +/- 0.039e-13 | 6.000e-11 +/- 0.048e-11 | +0.8% (Free-swing) | Fig.2-3 (for Free-swing) |
A_ITMX(0)/A_BS(0) | 0.04956 +/- 0.00038 | same as left | -0.2% | Fig.4-5 |
A_ITMX(0) | 3.063e-12 +/- 0.030e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ITMX(3)/A_ITMX(0) | 1.1292 +/- 0.0018 | same as left | +0.1% | Fig.6-7 |
A_ITMX(3) | 3.459e-12 +/- 0.035e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ETMX_TM/A_ITMX(3) | 1.1456 +/- 0.0011 | same as left | -7.9% | Fig.8-9 |
A_ETMX_TM | 3.962e-12 +/- 0.040e-12 | 3.8574e-12 +/- 0.0033e-12 | -0.6% (XPcal) | Fig.10-11 (for XPcal) |
A_ETMX_IM/A_ETMX_TM | 42.1 +/- 2.4 | N/A | -7.8% | Fig.12-13 |
A_ETMX_IM | 1.670e-10 +/- 0.097e-10 | 1.68e-10 +/- 0.10 | -8.7% (XPcal) | Fig.14-15 (for XPcal) |
H_DARM | 2.211e+12 +/- 0.023e+12 | 2.2775e+12 +/- 0.0071e+12 | +0.9% (XPcal) | Fig.16-19 |
1/H_DARM | 4.522e-13 +/- 0.048e-13 | 4.391e-13 +/- 0.014e-13 | N/A | |
A_BS(1)/A_BS(0) | 1.0423 +/- 0.0048 | same as left | +0.5% (Free-swing) | Fig.20-21 |
A_BS(1) | 6.441e-11 +/- 0.050e-11 | 6.254e-11 +/- 0.057e-11 | +1.3% (Free-swing) | |
H_MICH | 4.628e+08 +/- 0.036e+08 | 4.767e+08 +/- 0.044e+08 | +9.8% (Free-swing) | Fig.22-25 |
1/H_MICH | 2.161e-09 +/- 0.017e-09 | 2.098e-09 +/- 0.019e-09 | N/A | |
A_PRM(1)/A_BS(1) | 27.21 +/- 0.12 | same as left | +1.0% | Fig.26-27 |
M2P FF gain | 0.03675 +/- 0.00016 | same as left | N/A | |
A_PRM | 8.764e-10 +/- 0.078e-10 | 8.509e-10 +/- 0.086e-10 | +2.3% (Free-swing) | |
H_PRCL | 2.057e+09 +/- 0.018e+09 | 2.118e+09 +/- 0.021e+09 | +4.3% (Free-swing) | Fig.28-31 |
1/H_PRCL | 4.862e-10 +/- 0.043e-10 | 4.720e-10 +/- 0.048e-10 | N/A | |
A_ITMX(3)/A_BS(1) | 0.05369 +/- 0.00049 | same as left | N/A | |
M2D FF gain | 18.6 +/- 3.2 | same as left | N/A |
We accepted SDFs related to the cal measurement (klog#34412) in observation.snap, down.snap, and safe.snap (k1calcs).
K1:CAL-MEAS_{CURRENT, LATEST}
with Dan, YamaT, SawadaT
We performed full measurements for the IFO calibration.
The analysis results will be posted at a later date.
Notes:
The DARM-related measurements were conducted after adjusting the feedforward gains (see klog#34410).
Following the same method as klog#34040 and klog#34033, we performed measurements to observe the changes in DC caused by differences in the number of whitening filter stages for ITMX-TM and BS-TM.
Measurement files (`/users/CAL/current/measurements/2025/0603/0920_*`):
0920_BS_TM_PRCL.xml : Whitening = 1 stage
0920_BS_TM_PRCL-1.xml : Whitening = 0 stage
0920_ITMX_TM_DARM_PRFPMI_WFOFF.xml : Whitening = 0 stage
0920_ITMX_TM_DARM_PRFPMI_WFON.xml : Whitening = 3 stages
Free-swing | XPcal | Diff. from prev. | Figures | |
---|---|---|---|---|
H_mich | 1.115e+09 +/- 0.0067e+09 | N/A | -2.8% | Fig.1 |
A_BS(0) | 6.180e-11 +/- 0.039e-13 | 6.000e-11 +/- 0.048e-11 | +0.8% (Free-swing) | Fig.2-3 (for Free-swing) |
A_ITMX(0)/A_BS(0) | 0.04956 +/- 0.00038 | same as left | -0.2% | Fig.4-5 |
A_ITMX(0) | 3.063e-12 +/- 0.030e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ITMX(3)/A_ITMX(0) | 1.1292 +/- 0.0018 | same as left | +0.1% | Fig.6-7 |
A_ITMX(3) | 3.459e-12 +/- 0.035e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ETMX_TM/A_ITMX(3) | 1.1456 +/- 0.0011 | same as left | -7.9% | Fig.8-9 |
A_ETMX_TM | 3.962e-12 +/- 0.040e-12 | 3.8574e-12 +/- 0.0033e-12 | -0.6% (XPcal) | Fig.10-11 (for XPcal) |
A_ETMX_IM/A_ETMX_TM | 42.1 +/- 2.4 | N/A | -7.8% | Fig.12-13 |
A_ETMX_IM | 1.670e-10 +/- 0.097e-10 | 1.68e-10 +/- 0.10 | -8.7% (XPcal) | Fig.14-15 (for XPcal) |
H_DARM | 2.211e+12 +/- 0.023e+12 | 2.2775e+12 +/- 0.0071e+12 | +0.9% (XPcal) | Fig.16-19 |
1/H_DARM | 4.522e-13 +/- 0.048e-13 | 4.391e-13 +/- 0.014e-13 | N/A | |
A_BS(1)/A_BS(0) | 1.0423 +/- 0.0048 | same as left | +0.5% (Free-swing) | Fig.20-21 |
A_BS(1) | 6.441e-11 +/- 0.050e-11 | 6.254e-11 +/- 0.057e-11 | +1.3% (Free-swing) | |
H_MICH | 4.628e+08 +/- 0.036e+08 | 4.767e+08 +/- 0.044e+08 | +9.8% (Free-swing) | Fig.22-25 |
1/H_MICH | 2.161e-09 +/- 0.017e-09 | 2.098e-09 +/- 0.019e-09 | N/A | |
A_PRM(1)/A_BS(1) | 27.21 +/- 0.12 | same as left | +1.0% | Fig.26-27 |
M2P FF gain | 0.03675 +/- 0.00016 | same as left | N/A | |
A_PRM | 8.764e-10 +/- 0.078e-10 | 8.509e-10 +/- 0.086e-10 | +2.3% (Free-swing) | |
H_PRCL | 2.057e+09 +/- 0.018e+09 | 2.118e+09 +/- 0.021e+09 | +4.3% (Free-swing) | Fig.28-31 |
1/H_PRCL | 4.862e-10 +/- 0.043e-10 | 4.720e-10 +/- 0.048e-10 | N/A | |
A_ITMX(3)/A_BS(1) | 0.05369 +/- 0.00049 | same as left | N/A | |
M2D FF gain | 18.6 +/- 3.2 | same as left | N/A |
Free-swing | XPcal | Diff. from prev. | Figures | |
---|---|---|---|---|
H_mich | 1.115e+09 +/- 0.0067e+09 | N/A | -2.8% | Fig.1 |
A_BS(0) | 6.180e-11 +/- 0.039e-13 | 6.000e-11 +/- 0.048e-11 | +0.8% (Free-swing) | Fig.2-3 (for Free-swing) |
A_ITMX(0)/A_BS(0) | 0.04956 +/- 0.00038 | same as left | -0.2% | Fig.4-5 |
A_ITMX(0) | 3.063e-12 +/- 0.030e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ITMX(3)/A_ITMX(0) | 1.1292 +/- 0.0018 | same as left | +0.1% | Fig.6-7 |
A_ITMX(3) | 3.459e-12 +/- 0.035e-12 | 3.3583e-12 +/- 0.0043e-12 | +0.7% (Free-swing) | |
A_ETMX_TM/A_ITMX(3) | 1.1456 +/- 0.0011 | same as left | -0.9% | Fig.8-9 |
A_ETMX_TM | 3.962e-12 +/- 0.040e-12 | 3.8574e-12 +/- 0.0033e-12 | -0.6% (XPcal) | Fig.10-11 (for XPcal) |
A_ETMX_IM/A_ETMX_TM | 42.1 +/- 2.4 | N/A | -7.8% | Fig.12-13 |
A_ETMX_IM | 1.670e-10 +/- 0.097e-10 | 1.68e-10 +/- 0.10 | -8.7% (XPcal) | Fig.14-15 (for XPcal) |
H_DARM | 2.1246e+12 +/- 0.023e+12 | 2.1875e+12 +/-0.0073e+12 | -3.1% (XPcal) | Fig.16-19 => Fig.1-4 in this post |
1/H_DARM | 4.709e-13 +/- 0.050e-13 | 4.572e-13 +/- 0.015e-13 | N/A | |
A_BS(1)/A_BS(0) | 1.0423 +/- 0.0048 | same as left | +0.5% (Free-swing) | Fig.20-21 |
A_BS(1) | 6.441e-11 +/- 0.050e-11 | 6.254e-11 +/- 0.057e-11 | +1.3% (Free-swing) | |
H_MICH | 4.628e+08 +/- 0.036e+08 | 4.767e+08 +/- 0.044e+08 | +9.8% (Free-swing) | Fig.22-25 |
1/H_MICH | 2.161e-09 +/- 0.017e-09 | 2.098e-09 +/- 0.019e-09 | N/A | |
A_PRM(1)/A_BS(1) | 27.21 +/- 0.12 | same as left | +1.0% | Fig.26-27 |
M2P FF gain | 0.03675 +/- 0.00016 | same as left | N/A | |
A_PRM | 8.764e-10 +/- 0.078e-10 | 8.509e-10 +/- 0.086e-10 | +2.3% (Free-swing) | |
H_PRCL | 2.057e+09 +/- 0.018e+09 | 2.118e+09 +/- 0.021e+09 | +4.3% (Free-swing) | Fig.28-31 |
1/H_PRCL | 4.862e-10 +/- 0.043e-10 | 4.720e-10 +/- 0.048e-10 | N/A | |
A_ITMX(3)/A_BS(1) | 0.05369 +/- 0.00049 | same as left | N/A | |
M2D FF gain | 18.6 +/- 3.2 | same as left | N/A | |
YPCAL/XPCAL | N/A | 0.98474 +/- 0.00080 | -0.2% | Fig.5-6 in this post |
I estimated and updated the parameters related DARM (Fig.1).
There is no strange variations (Fig2).
H_etmxtm = 3.839154366e-14 at 10Hz (0.23% from previous measurements)
H_etmxim = 1.535938431e-14 at 10Hz (-1.9% from previous measurements)
Optical_gain = 2.129473235e12 (0.07% from previous measurements)
Cavity_pole = 18.127587391 Hz (-0.76% from previous measurements)
Previous parameters are listed in klog#34393.
I investigated the variation in optical gain (specifically, the gain of the sensing function) between 0602 full calibration (klog#34033) and 0630 full calibration (Fig.3).
A decreasing trend was observed from the measurement date (June 2) toward June 20, followed by an increase thereafter.
Since a continuous change can be observed on this time scale (although further data accumulation is needed),
there is a possibility that calibration lines could not only account for statistical fluctuations, but also help suppress systematic errors by correcting for actual variations.
MICH and PRCL calibrations were updated by using the values in klog#34423 as follows.
- 1/H_MICH [K1:CAL-CS_SUM_MICH_ERR_FM1]
- A_BS(1) [K1:CAL-CS_SUM_MICH_BS_TM_FM1]
- 1/H_PRCL [K1:CAL-CS_SUM_PRCL_ERR_FM1]
- A_PRM [K1:CAL-CS_SUM_PRCL_PRM_TM_FM1]
Actual changes were shown in Fig.1.
After then line tracking parameters were also updated based on the DARM calibration parameters in klog#34424.
Updated EPICS records can be found in JGW-L2314962.
They were accepted on {observation,down,safe}.snap in klog#34426.
Finally, I raised CFC_LATCH bit and moved from CALIB_NOT_READY to READY.
Differences in foton filters shown in Fig.1 are related to klog#34424 (K1:CAL-CS_DARM_*) and klog#34425 (K1:CAL-CS_SUM_{MICH,PRCL}_*).
Differences in SDF tables shown in Fig.2 are related to klog#34411 (K1:CAL-MEAS_*) and klog#34426 (K1:CAL-CS_TDEP_*).
There is no change in guardian code and model files as shown in Fig.3 and Fig.4, respectively.
Here is a update of the 8 blasting between 2025/06/18 03:22:49 UTC and 2025/06/26 13:59:52 UTC. The plots are available at DAC wiki.