KAGRA Logbook

MIF (General)

takaaki.yokozawa - 8:28 Friday 20 September 2019 (10632)

Morning silent run 2019/09/20

Morning silent run with Xarm lock (K1:GRDLSC_SRFPMI_LOCK_STATE_N=44)

5:20 Start Xarm cavity lock run with feed forward of the starinmeter(ETMX) and no seismometer sensor correction IP(ITMX, ETMX)

6:20 Turned off the feed forward of the starinmeter(ETMX)

6:21 Start Xarm cavity lock run without any sensor correction IP(ITMX, ETMX)

7:16 Start PCal line injection

7:20 Start Xarm cavity lock run with feed forward of the strainmeter(ETMX) and with seismometer sensor correction IP(ITMX, ETMX)

8:20 Turned off the feed forward of the strainmeter(ETMX)

8:22 Start Xarm cavity lock run with seismometer sensor correction IP(ITMX, ETMX), no strainmeter feed forward.

9:20 Start Xarm cavity lock run with feed forward of the strainmeter(ETMX) and with seismometer sensor correction IP(ITMX, ETMX)

12:10 Stop the run

Fig.2 shows the spectrum for the strainmeter SC and strainmeter+seismometer SC

If you notice someting, please call to Yokozawa

Images attached to this report

Comments to this report:

yoshinori.fujii - 10:26 Friday 20 September 2019 (10634)

Could you please add the information about the followings?:

Were the loops for BF-L/T on? (I think they were on though)
what is the difference between the run from 7:20 and the one from 9:20?
Why the configuration of "with feed forward of the strainmeter(ETMX) and with seismometer sensor correction IP(ITMX, ETMX)" prefered with the current correction filters?
I'm coming to you later!

takaaki.yokozawa - 12:02 Friday 20 September 2019 (10636)

No, in morning run, no SC to the BF.

Same configuration, but we can take the additional run.

Why the configuration of "with feed forward of the strainmeter(ETMX) and with seismometer sensor correction IP(ITMX, ETMX)" prefered with the current correction filters?

I didn't investigate the result of the spectrum.

OK!