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Reports until 14:48, Tuesday 15 August 2023
H1 DetChar (DetChar)
Link
kiet.pham@LIGO.ORG -
posted 14:48, Tuesday 15 August 2023
(72248)
DQ Shift Report LHO: 7 Aug 2023 00:00 UTC to 13 Aug 2023 23:59 UTC
Link to the report:
IFO averaged observing time around 58.63% with low observing time on Aug 7,8 and 11. Observing for >89% over the weekends
Several loss lock/ leave observing due to squeezer through out the week (check
Aug-12
,
Aug 10
,
Aug-8
,
Aug-8
)
The range was consistently between 140 and 145 Mpc when in observing mode. Hit near 160 Mpc at one point (alog
link
)
Fscan line count was consistently below 600 this week, except for Wednesday Aug - 9(650 lines)
Hveto primary winners over the week were:
H1:PEM-EX_VMON_ETMX_ESDPOWER48_DQ
H1:SUS-ETMX_L3_OPLEV_PIT_OUT_DQ
H1:SUS-ETMX_L3_OPLEV_YAW_OUT_DQ
Other winners: H1:ASC-Y_TR_A_NSUM_OUT_DQ (Aug 09, 12, 13), H1:ASC-CHARD_Y_OUT_DQ (Aug 10, 12), H1:LSC-REFL_A_LF_OUT_DQ (Aug 12)
Stood out excess noise in PEM during observing time
Aug 09, 12, 13: (PEM: Acoustic) violin modes noise(thick 23-24Hz line)
Aug 10: (PEM: Acoustic) loud noise burst in EX, and EY last nearly 2 hours (1:10 UTC - 3:40 UTC)
Aug 11: (PEM: Accelerometers End BSCs) loud noise burst in BSC10 [X] and [Y] last nearly 2 hours (0:00 UTC - 2:00 UTC)
Strong horizontal lines shows up as the IFO enter lock around 102 Hz, 500Hz, 1000 Hz. 102 Hz line cover a broader range of frequencies
102.13 Hz line presents in Fscan spectrum through the week with high power, except for Aug 13
Possibly only because IFO entered the lock only once at near end of the day
Still visible in the h(t) spectrogram
There were low-frequency loud glitches (10-14Hz) that often happened right before the IFO loses lock (check glitch gram on Aug
7
,
8
,
10
,
11
,
12
,
13
)
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