DetChar (General)hideyuki.tagoshi - 11:54 Wednesday 18 December 2019 (12207)
Print this reportSummary of December 17Summary of December 17 (Official start of ER: Dec17, 17:00 JST (8:00 UTC))
From 16:23 JST (7:23 UTC) to Dec.18 9:00 JST (Dec18 00:00 UTC) (Total time: 61177 sec)
Total lock duration: 58570 sec, 16.26 hours
Duty cycle 95.7%
Summary:
Even during lock, BNS range drops to zero several times
during 11:00-11:50 (UTC) (20:00-20:50 JST).
K1:CAL-CS_PROC_DARM_DISPLACEMNT_DQ show very large noise during that period.
K1:CAL-CS_PROC_MICH_DISPLACEMENT_DQ, 0Hz-100Hz show disturbances during this period.
BNS range seems more unstable after 22:00 UTC (Dec18, 7:00 JST)
Lock start Lock end Duration[sec] [Hours] BNS range
December 17 2019 07:23:55.000 December 17 2019 12:52:51.000 19736 5.48 8kc
December 17 2019 13:00:26.000 December 17 2019 20:32:23.000 27117 7.53 6-7kpc
December 17 2019 20:37:43.000 December 17 2019 23:51:11.000 11608 3.22 6kpc
December 17 2019 23:58:11.000 December 18 2019 00:00:00.000 109 ---- ---
(Time is UTC)
BNS range disturbance (Rapid decrease and recover) (UTC)
11:00
11:15
11:45
11:50
17:25
22:00(decrease from 6kpc to 5kpc)
22:32(decrease from 6kpc to 5kpc)
23:18(decrease from 6kpc to 5kpc)
BNS range is more unstable after 22:00
FSCAN checking (new lines etc)
K1:CAL-CS_PROC_DARM_DISPLACEMNT_DQ
after 13:00, 110Hz and 150Hz
after 20:37, 492Hz, 489Hz
after 13:00, 1130Hz
after 13:00, 1370Hz, 1610Hz, 1630Hz, 1750Hz, 1730Hz, 1968Hz, 1990Hz,
K1:CAL-CS_PROC_IMC_FREQUENCY_DQ
only around 8:24 and 9:36: 264Hz
after 13:00, fluctuation of frequency: 922Hz, 966Hz, 1242Hz, 1518Hz, 1930Hz
K1:CAL-CS_PROC_MICH_DISPLACEMENT_DQ
after 13:00, fluctuation of frequency: 1140Hz,
Disturbances exist between 1840Hz-1890Hz
Comments to this report:
hideyuki.tagoshi - 22:47 Thursday 19 December 2019 (12240)
Print this reportCorrection:
Summary of December 17 (Official start of ER: Dec17, 17:00 JST (8:00 UTC))
Duty cycle computed from Observation mode duration
From 17:00 JST (8:00 UTC) to Dec.18 9:00 JST (Dec18 00:00 UTC) (Total time: 57600 sec)
Total Observation mode duration: 56056 sec, 15.57 hours
Duty cycle 97.3%
Observation mode start Observation mode end Duration[sec] BNS range
December 17 2019 08:00:02.000 December 17 2019 12:52:51.000 17569 8kc
December 17 2019 13:02:25.000 December 17 2019 20:32:23.000 26998 6-7kc
December 17 2019 20:39:42.000 December 17 2019 23:51:11.000 11489 6kpc
(Time is UTC)