DET_ADC7674, DET_ADC_Moni0 (39), channel 9 is NOISY !!! Accelerometer ENV_SDB2_ACC_Z connected to channel 11 (good cooenctio, no 50 Hz pollution) 1386752967 16 Dec 2023 09:09:09 UTC (16 Dec 2023 10:09:09 CET) compared to SIB2_ACC_BD_Z, spectrum is very similar, first peak at 32 Hz, might be mini-chamber mode ? quiet reference data 9:13 to 9:23 UTC shaker on SDB2 rectangular flange, in correspondence of B1 viewport white noise with small BT shaker 20-1000Hz volume at 1/2 of full scale 09:30:00 UTC small coherence around 440 Hz with SDB2 acc, almost no vibration trasmitted to SDB1 increased the volume (3/4 to full scale) 1386754504 16 Dec 2023 09:34:46 UTC (16 Dec 2023 10:34:46 CET) peaks around 66 Hz, associated to resonance of SDB2 (> 100 times quiet vinration) 1386754884 16 Dec 2023 09:41:06 UTC (16 Dec 2023 10:41:06 CET) taken new quiet reference without the glitch shaker on SDB2 rectangulare flange, in correspondence to HWS vp 1386755135 16 Dec 2023 09:45:17 UTC (16 Dec 2023 10:45:17 CET) to 1386755435 16 Dec 2023 09:50:17 UTC (16 Dec 2023 10:50:17 CET) similar excitation of SDB2 (accelerometer) peaking at 60 Hz and 66Hz and small peak at 66Hz excited in hrec, to be compared carefully with previous position to check if hrec is now pore excited. shaker on B1p viewport (SDB1 side) 1386755720 16 Dec 2023 09:55:02 UTC (16 Dec 2023 10:55:02 CET) to 1386756444 16 Dec 2023 10:07:06 UTC (16 Dec 2023 11:07:06 CET) we are exciting mainly SDB1 several peaks appear in hrec, 61 Hz, 66 Hz (now smaller, 184,281, 304, 321, 500, 504, 578, 595. 614 shaker on B5 vp (SDB1 side) 1386756651 16 Dec 2023 10:10:33 UTC (16 Dec 2023 11:10:33 CET) to 1386757222 16 Dec 2023 10:20:04 UTC (16 Dec 2023 11:20:04 CET) hrec peak beween 480 and 650Hz are excited the most (some excitation again at 66 Hz, 63 Hz: they seem to be associated resp to mech. mode of SDB2 (66) and SDB1 (63)) shaker on B5 pipe 1386757752 16 Dec 2023 10:28:54 UTC (16 Dec 2023 11:28:54 CET) to 1386758084 16 Dec 2023 10:34:26 UTC (16 Dec 2023 11:34:26 CET) we notice large difference respet to B5 viewport position: now almost NO PEAK EXCITED (apart from 66Hz, again associated to large excitation of SDB2 side at this frequency) and 860Hz. shaker on HWS pipe 1386758285 16 Dec 2023 10:37:47 UTC (16 Dec 2023 11:37:47 CET) to 1386758606 16 Dec 2023 10:43:08 UTC (16 Dec 2023 11:43:08 CET) no effect in hrec (almost no seism transmitted to SDB1) only 66Hz (associated to 66Hz seism on SDB2) shaker on B1p pipe 1386758876 16 Dec 2023 10:47:38 UTC (16 Dec 2023 11:47:38 CET) to 1386759416 16 Dec 2023 10:56:38 UTC (16 Dec 2023 11:56:38 CET) effect similar to "B1p viewport" location, this is reasonable since the shaker is close to the viewport with no bellow in between. shaker on B1 pipe 1386759579 16 Dec 2023 10:59:21 UTC (16 Dec 2023 11:59:21 CET) to 1386759872 16 Dec 2023 11:04:14 UTC (16 Dec 2023 12:04:14 CET) nothing in hrec (apart small 66 Hz) shaker on B1p pipe, second position (towards SDB2) 1386760038 16 Dec 2023 11:07:00 UTC (16 Dec 2023 12:07:00 CET) to 1386760308 16 Dec 2023 11:11:30 UTC (16 Dec 2023 12:11:30 CET) exciting mostly SDB2 in hrec exciting peaks around 60 Hz: precisely: 53 Hz, 59Hz, 66 Hz shaker on B1p viewport line at 309 Hz 11:15 to 11:17 line at 308 Hz 11:19:29 to 11:19:21 line at 307 Hz 11:22 to 11:23:50 line at 306 Hz 11:24:30 to 11:26:14 line at 310 Hz 11:27 to 11:28:20 line at 311 Hz 11:29:40 to 11:31:10 line at 312 Hz 11:31:30 to 11:33:40 we see the 309-310 Hz region (bump di Maddalena in hrec) responds with amplified excitation in hrec and two sidebands at +- 294.7 and 320.5 Hz (baricenter at 307.6 Hz) >>>>>>>>>>>>>>>>> TAPPINGS cryoT DET side of cyliner towards SDB1 1386763647 16 Dec 2023 12:07:09 UTC (16 Dec 2023 13:07:09 CET) 1386763739 16 Dec 2023 12:08:41 UTC (16 Dec 2023 13:08:41 CET) peak at 525Hz side if cylinder towards SR 1386763840 16 Dec 2023 12:10:22 UTC (16 Dec 2023 13:10:22 CET) 1386763909 16 Dec 2023 12:11:31 UTC (16 Dec 2023 13:11:31 CET) peak at 500 Hz (TBC) belly 1386764023 16 Dec 2023 12:13:25 UTC (16 Dec 2023 13:13:25 CET) 1386764088 16 Dec 2023 12:14:30 UTC (16 Dec 2023 13:14:30 CET) alittle bit the 525Hz bellow (SDB1 side) 1386764167 16 Dec 2023 12:15:49 UTC (16 Dec 2023 13:15:49 CET) 1386757222 16 Dec 2023 10:20:04 UTC (16 Dec 2023 11:20:04 CET) seems no effect INJ cryoT cylinder side SIB1 1386764345 16 Dec 2023 12:18:47 UTC (16 Dec 2023 13:18:47 CET) 1386757222 16 Dec 2023 10:20:04 UTC (16 Dec 2023 11:20:04 CET) cylinder side PR 1386764437 16 Dec 2023 12:20:19 UTC (16 Dec 2023 13:20:19 CET) 1386764503 16 Dec 2023 12:21:25 UTC (16 Dec 2023 13:21:25 CET) belly, top 1386764571 16 Dec 2023 12:22:33 UTC (16 Dec 2023 13:22:33 CET) 1386764634 16 Dec 2023 12:23:36 UTC (16 Dec 2023 13:23:36 CET) belly, front 1386764705 16 Dec 2023 12:24:47 UTC (16 Dec 2023 13:24:47 CET) 1386764765 16 Dec 2023 12:25:47 UTC (16 Dec 2023 13:25:47 CET) bellow 1386764904 16 Dec 2023 12:28:06 UTC (16 Dec 2023 13:28:06 CET) 1386764967 16 Dec 2023 12:29:09 UTC (16 Dec 2023 13:29:09 CET) >>>>>>>>> ACOUSTIC INJECTIONS CEB - DET terrace 13:45 UTC Wind is now moderate Observing the quiet Hrce, we notice a few peaks that were not present in the morning: 117.4, 137.4, as well the noise between 10 and 40 Hz is a bit larger quiet reference 1386770211 16 Dec 2023 13:56:33 UTC (16 Dec 2023 14:56:33 CET) colored 10-1190 Hz, 0.002 14:00:16 to 14:06:40 colored 10-1190 Hz, 0.004 14:06:41 to 14:13:59 small terrace back of DAQ room - connected to NOISE_MAG_CEB (DAC ch 6) because ch 7 (CEB_DAQroom) does not work (!) colored 10-1190, volume at 0.004 14:27:23 to 14:35:09 UTC more or less the same excitation in hrec, some more excitation at 165Hz and 59Hz SWEEP: 10 - 2000 Hz, 300s 0.1 V 15:02:53 unlocked at 15:03:15 when sweep frequency ~150Hz BUT sweep was very loud Moved loudspeaker from small terrace to DET terrace SWEEP: (10-2000)Hz, 0.04, 300 sec 16:19:21 UTC to 16:36:42 UTC