performance check of seismometerSC

[YoshinoriFujii]

todo

• [x] IPdcdamp
• [x] IPdcdamp + IPsc
• [x] IPdcdamp + IPsc + BFdamp
• [x] IPdcdamp + IPsc + BFdamp + BFsc

[YoshinoriFujii]

IPdcdamp + IPsc + BFdamp

• at 06:18JST started
• [x] for 45min total at least.

---

from ~06:25 to 06:45

to 0721 JST

[YoshinoriFujii]

IPdcdamp + IPsc + BFdamp + BFsc

• at 07:22JST started
• [x] for 45min total at least.

• When BFsc was off -> on:

until 08:25JST

[YoshinoriFujii]

IPdcdamp + IPsc

• at 08:28JST started
• [x] for 45min total at least.

for a quick check:

until 09:24 JST

[YoshinoriFujii]

Tips: Plotting transfer function w/ Gwpy: https://gwpy.github.io/docs/v0.1/examples/gw_ex_plot_transfer_function.html

[YoshinoriFujii]

Brief summary, to be updated:

• see /users/VIS/TypeA/general/rms_suppression/20190919/*/

  

  

  

  

---

• [x] add local performance

[YoshinoriFujii]

btw, average_fft is commonly used one?

[YoshinoriFujii]

add local performance

generated the coherence .txt files by: /users/VIS/TypeA/general/rms_suppression/20190919/scripts/global/exe_plot_20190919_performance.py the data is stored in: /users/VIS/TypeA/general/rms_suppression/20190919/IPdcdamp_IPsc_BFdamp/data_files/coh/

updates190920.pdf

[YoshinoriFujii]

add local performance

generated the coherence .txt files by: /users/VIS/TypeA/general/rms_suppression/20190919/scripts/global/exe_plot_20190919_performance.py the data is stored in: /users/VIS/TypeA/general/rms_suppression/20190919/IPdcdamp_IPsc_BFdamp/data_files/coh/

Tips: enumerate https://python.civic-apps.com/zip-enumerate/

[YoshinoriFujii]

The work is restarted

2019.9.21

• How to lock IR => ref: SASLIGNMENT.adl, after putting all oplevs to the good reference (for Xarm, IY should be misaligned), and request "Aign IRX", then request "IR_ARM_LOCK" in "SC_SRFPMI_LOCK".

• at 05:50 JST, IR at X-arm was locked.

[YoshinoriFujii]

IPdcdamp

• at 06:16 started.

until 07:21JST

[YoshinoriFujii]

IPdcdamp + IPsc

• At 07:25 started

• When the IPsc was started (at 07:25JST):

• From 07:21 to 07:51 JST:

• It looked that the peak at 155mHz is not from the IP-L motion at least.

---

• At 07:53 BFsc started:

• From 07:55 to 08:23 JST:

[YoshinoriFujii]

IPdcdamp + IPsc + BFdamp + BFsc

• at 08:25

  • ETMX-BFdamp-L/T was on.

• ITMX-BFL was modified since larger noise was to be injected with the implemented filter:

  • K1:VIS-ITMX_BF_DAMP_L_OUT w/ SW-off, before/after changing the filter:

  • the spectra before(upper) / after(lower):

  • [ ] Add some notches and increase the gain at ~150,Hz. => try to tune again.

---

• at 09:00
  • ITMX-BFdamp-L/T was on.

• At 0910JST started.

• Until 0940JST.

[YoshinoriFujii]

Again, IPdcdamp + IPsc + BFdamp + BFsc

• at 10:35JST started.

• orange: w/o BFdamp (with corrected LVDT)

• ime: w/ BFdamp (with corrected LVDT)

  • damping for ITMX looked not effective.

• until 11:50JST

---

from 12:05, only EX-BFdamp is used. Until 12:18JST.

[YoshinoriFujii]

Again and again, IPdcdamp + IPsc + BFdamp + BFsc

• try to modify the BFloops, especially for ITMX"s ,

• the resG frequency was changed from 146 mHz to 156mHz.

---

• from 12:29JST to12:56JST:

• zoom-in

• coherence check

until 14:05JST

[YoshinoriFujii]

check the BFdamping performance

• opened the EX-BF-loops at 14:05JST
• It looked the filters themselves were working properly. => not much effective?

[YoshinoriFujii]

Again and again, IPdcdamp + IPsc + BFdamp + BFsc

• At 14:25JST started:

• Until 15:30JST.

• [ ] Xarm has a high coherence with IP-T? actually, the local damping of IP-T for the both suspension looks not enough?

=> Do check fr next.

---

• Other stuffs to be checked:
• [ ] is a velocity damp is used BF-loop properly?
• [ ] The axes of X-arm, IT and EX suspension are aligned?

[YoshinoriFujii]

log on 2019.9.22

• green: today's
• the others: Sep. 21st's

---

• At 18:00

• About the ground motion:

  • blue and magenta: 2019.9.21 measurement
  • brown: in the morning on 2019.9.22
  • lime: the latest one

• [ ] why only ITMY looks much noisier than the others?

[YoshinoriFujii]

2019.9.23

After taking care of 0.4Hz peak in BF-/T (believing they went away..), locked X-arm cavity:

from 15:33JST.

IPdcdamp + IPsc + BFdamp + BFsc for both L and T dof.

Until 16:29JST

[YoshinoriFujii]

from 16:47JST.

IPdcdamp + IPsc + BFsc for both L and T dof. wait NOW! FYI, X-arm locked during: 16:56 - 17:00 17:09 - 17:13

---

• gif SC has started fomr 20:43 with gain1.4

• at 2057JST, opened GIFsc path

• at 21:09JST, gifSc was on with gain 1.

• at 21:22JST, gifSC with gain 1.2 started.

• at 21:34JST, gifSc with gain 0.8 started,

• at 21:46JST, gifSc with gain 1.1 started, -at 22:35JST, gifSC with gain 1, with IPL-gain 0.5 started.

[YoshinoriFujii]

Seismometer sensor correction check on 2019.9.25

---

From 2:28JST, IPdcdamp + IPsc + BFdamp + BFsc

• /users/VIS/TypeA/general/LogNotes/20190925/IPdcdamp_IPsc_BFdamp_BFsc_Xarm_locked_from0233JST.xml

• Spectrum shape -> similar to gifSC one?

• from 100mHz to200Hz, is from a stuff except for ground differential motion

  • よくわからないこと
  • IXではIP-LVDT-corrとIP-ACCとがよく一致して見える(at ~0.2Hz band)一方、EXではIP-LVDT-corrとIP-GEOとがあまり一致していないように見えること。
    • [ ] センサーの軸と地震計の軸が違うから？そうだと、なんでIXはそんなにあったの?

stopped at 03:33JST

[YoshinoriFujii]

From 3:37JST, IPdcdamp + IPsc + BFsc

• /users/VIS/TypeA/general/LogNotes/20190925/IPdcdamp_IPsc_BFdamp_BFsc_Xarm_locked_from0233JST.xml

• red: IPdcdamp + IPsc + BFsc
• blue: IPdcdamp + IPsc + BFdamp + BFsc

• blue: measured on September 22th
• brown: measured on September 23th
• lime: measured on September 24th, IPdcdamp + IPsc + BFdamp + BFsc case

• magenta: measured on September 25th, IPdcdamp + IPsc + BFsc case

  • It seems that when the ground motion is quiet, the BF-loop introduces ground motion.
  • Is this because the sensor correction is not done properly?

[YoshinoriFujii]

From 4:39JST, IPdcdamp + BFsc

• /users/VIS/TypeA/general/LogNotes/20190925/IPdcdamp_IPsc_BFsc_Xarm_locked_from0233JST.xml
  • red: IPdcdamp + IPsc + BFsc
  • blue: IPdcdamp + IPsc + BFdamp + BFsc
  • magenta: IPdcdamp

stopped at 05:40JST

[YoshinoriFujii]

From 5:45JST, IPdcdamp + GIFsc

• with GIFsc gain 1
• w/o local sensor correction paths

stopped at 06:50JST

[YoshinoriFujii]

Brief summary of Sep. 24th measurement

1. (IPdcdamp + IPsc + BFdamp + BFsc) vs. (IPdcdamp + IPsc)

https://github.com/YoshinoriFujii/Weekly-task/issues/23#issuecomment-534692366

2. (IPdcdamp + IPsc + BFdamp + BFsc) vs. (IPdcdamp + IPsc) vs. (IPdcdamp)

https://github.com/YoshinoriFujii/Weekly-task/issues/23#issuecomment-534719849

• The BF loops suppressed the X-arm cavity signal when the weather was so stoomy.

• If the ground motion was like at 50%-tile, it seems there is not improvement, rather the Xarm RMS would become less improved.

  3. strainmeter-SC vs. seismometer-sc

  

• The residuals:

  • 200mHz bump in seismometer-sc should be
  • 150mHz, 400mHz, 700mHz: dip at IPexc-TF.

• ..kill with TM2IP or BF2IP?
• 1Hz is to be taken case of?

[YoshinoriFujii]

ITMX:

• it looks there is some coupling to IPT

[YoshinoriFujii]

btw, the Sc gain of ITMX-IPT was 1.1176. Does this make the worse coupling?

• It looks no..?

• ITMX:

• ETMX:

[YoshinoriFujii]

Note:

Significant Wave Height: https://www.jma-net.go.jp/kanazawa/mame/nami/nami.html

[YoshinoriFujii]

Note on 2019.11.26

• comparison the displacement transfer function from the ground to IP-satge(measured by geophone)
  • see /users/VIS/TypeA/general/LogNotes/20190921/notes_20191126/

• IPdcdamp + IPsc + BFdamp + BFsc

---

• try multiply
• [x] the TM/IPL and also
• [x] the (1yr-seismic noise), and then.
• [ ] get the RMS.

• Note that the seismometer polarity is opposite in the above plots.

• see other details: https://www.evernote.com/l/AoOpH5zRVQJKhKNP_C28IzJMohTf-eYWHZs/

[YoshinoriFujii]

try multiply the TM/IPL and also the (1yr-seismic noise), and then.

see https://www.evernote.com/l/AoOpH5zRVQJKhKNP_C28IzJMohTf-eYWHZs/