check current situation including SC

YoshinoriFujii commented 4 years ago

~[1]~ what is the difference of the IPdcdamp filters, and what was happened on the spectra with those filters?

[2] check the actual performance of the following configuration during the silent run:

~[3]~ check the gain of the IPdcdamp loop when the IPsc is engaged.

[4] simulate the Q-factors and if the tower-modes meet the requirement.

~[5]~ confirm if the sensor-corrected at TMoplev can see the TM motion

YoshinoriFujii commented 4 years ago

[5] confirm if the sensor-corrected at TMoplev can see the TM motion

see /users/VIS/TypeA/general/rms_suppression/20190918/20190917JST/ Tips: https://gwpy.github.io/docs/stable/api/gwpy.timeseries.TimeSeries.html

It seems yes in the range from about 150mHz to 500mHz.
For next, compare with the simulation:
- [x] w/ IPdcdamp + IPsc
=> see /kagra/Dropbox/Personal/Fujii/TypeA/simulation/figures/*/IPdcdamp_20190903_IPLsc_20190917_seis/

spectrum_TML_IPdcdamp_20190903_IPLsc_20190917_seis

spectrum_TML_IPdcdamp_20190903_IPLsc_20190917_seis

[x] compare the simulation and the measurement
- see /kagra/Dropbox/Personal/Fujii/TypeA/simulation/scripts/exe_plot_20190917_performance.py
- see also /kagra/Dropbox/Personal/Fujii/TypeA/simulation/figures/measurement_comp/IPdcdamp_20190903_IPLsc_20190917_seis/comp_local_ETMX_TM_IPsc-on.png

comp_local_ETMX_TM_IPsc-on

It seemed that the correction of TMoplev with seismometer did not work well..
- [ ] calibration factor would be suspicious?
It would not be a good idea to use the length oplev as the local sensor when the ground motion is quiet..
- When the ground motion is quiet, only the sensors would be the cavities..

YoshinoriFujii commented 4 years ago

[3] check the gain of the IPdcdamp loop when the IPsc is engaged.

see /kagra/Dropbox/Personal/Fujii/TypeA/simulation/figures/*/${config}/ where config is:
- IPdcdamp_20190903_IPsc*
  
  In simulation side:
- w/ IPdcdamp, w/o IPLsc

IPL2IPL_IPdcdamp_20190903_IPsc_gain1

IPdcdamp_gain = 0.5 and 1 IPdcdamp-forIPsc_gain_comp

w/ IPdcdamp, w/ IPLsc-ideal
/kagra/Dropbox/Personal/Fujii/TypeA/simulation/figures/*/IPsc_gain_comp IPdcdamp_gain = 0.5 and 1

YoshinoriFujii commented 4 years ago

[1] what is the difference of the IPdcdamp filters, and what was happened on the spectra with those filters?

see /kagra/Dropbox/Personal/Fujii/TypeA/simulation/figures/sensor_noise_couling/IPdcdamp_asis_comp
w/ asis-IPdcdamp filter
w/o IPLsc <- | -> w/ IPLsc

According to the simulation, asis-filter+IPsc will increas the RMS because of the sc-filter gain at 30mHz. For this point of view, it would be better to use the 20190903-filter though, the hight of the peak at about 150mHz is mostly same..
- [ ] Does this change if vertical motion is suppressed?

YoshinoriFujii commented 4 years ago

Tip: enumerate ehttps://python.civic-apps.com/zip-enumerate/

YoshinoriFujii / Weekly-task