DQ Shift checklist (2020 Apr 7-20)
Task No. |
Theme |
Substance |
1. |
Check SummaryPage works or not |
See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/monitoring/ |
2. |
Check Sensitivity & Binary range transition |
See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/today/ |
3. |
Check Duty Cycle |
See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/day/$(date)/lock/ifo/, and post to klog |
4. |
Check Spectral line noise (on one day before) |
See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/yesterday/detchar/fscan/ |
5. |
List Lockloss times |
See https://gwdet.icrr.u-tokyo.ac.jp/~controls/summary/today/ |
6. |
Check the input power |
The EPICS channel showing the input power is K1:LAS-POW_IMC_DC_OUT_DQ. Or note a rough number from SummaryPages => PSL => Summary |
7. |
DQ shift Reports |
Post the findings on klog, for example, klog12282 |
Additional DQ challenge 1: Lockloss investigation
If you have an access to the control room machines or main data server, please try to find the cause of lockloss by checking the following important channels! Many of the listed channels can be found in SummaryPages, however it might be difficult to look closer only with it.
- Did any suspensions move drastically?
- Check the following oplev channels:
- K1:VIS-{PRM, PR2, PR3, BS, SR3, SR2, SRM, ITMX, ITMY, ETMX, ETMY}_TM_OPLEV_{PIT, YAW}_DIAG_DQ (urad) for large suspensions.
- K1:VIS-{MCI, MCO, MCE, IMMT1, IMMT2, OMMT1, OMMT2, OSTM}_TM_OPLEV_{PIT, YAW}_OUT_DQ (not calibrated in urad except MCI, MCE, MCO) for type-C suspensions.
- Check the following oplev channels:
- Did any error signals have obvious glitch or saturation?
- Error signal channels are K1:LSC-{DARM, MICH, PRCL, MCL}_IN1_DQ. (This DQ channel existed since Apr 15)
- Did the OMC DC signal (DARM error signal) have glitches or saturation?
- Check K1:OMC-TRANS_DC_{A,B}_IN1_DQ
- Was POP90I buildup (the sideband buildup within the power-recycling cavity, PRC) degrading before lockloss?
- K1:LSC-POP_PDA2_RF90_I_NORM_DQ
- Which arm did start degrading first?
- IR X buildup: K1:LSC-TR_X_NORM_OUT_DQ
- IR Y buildup: K1:LSC-TR_Y_NORM_OUT_DQ
- GR X buildup: K1:AOS-TMSX_GR_PDA1_OUT_DQ
- GR Y buildup: K1:AOS-TMSY_GR_PDA1_OUT_DQ
Check Chihiro's glitch plot: https://gwdet.icrr.u-tokyo.ac.jp/~controls/GlitchPlot/index.html, and report any interesting findings on klog.