4 Hz glitch reportd in klog13513 appeared again. It seems to be a laser frequency problem, but I'm so tired to investigate more.
I guess the reason why the PRFPMI could not be locked last night is this glitch.
I leave it and hopefully the situation would get better tonight by Gods.
Another unfatal glitches are reported before as
http://klog.icrr.u-tokyo.ac.jp/osl/?r=13240
http://klog.icrr.u-tokyo.ac.jp/osl/?r=13237
(* copy-and-paste of gokagra mail)
I made auxiliary channel plots and they are available here.
Following channels show suspicious behavior.
K1:PEM-MAG_BS_BOOTH_BS_*_OUT_DQ
K1:AOS-TMSY_GR_PDA1_OUT_DQ
K1:ALS-Y_PDH_SLOW_DAQ_OUT_DQ
K1:LSC-MCL_IN1_DQ
K1:LSC-POP_PDA1_RF45_I_ERR_DQ
K1:LSC-POP_PDA1_RF17_Q_ERR_DQ
K1:CAL-CS_PROC_MICH_DISPLACEMENT_DQ
K1:LSC-AS_PDA1_RF17_I_ERR_DQ
K1:LSC-AS_PDA1_RF17_Q_ERR_DQ
K1:LSC-REFL_PDA1_DC_IN1_DQ
I hope experts could get hint.
p.s. The web page is generated by my detchar tool for RRT. If you find any points to improve, I'm happy to hear it.
K1:PEM-MAG_BS_BOOTH_BS_{X|Y}_OUT_DQ seem to have continuos about 4 Hz small glitch noise as an attached file.
