QUIET ref 1439046478 12 Aug 2025 15:07:40 UTC (12 Aug 2025 17:07:40 CEST) HP NE 1439047148 12 Aug 2025 15:18:50 UTC (12 Aug 2025 17:18:50 CEST) 120 s HP NW 1439047534 12 Aug 2025 15:25:16 UTC (12 Aug 2025 17:25:16 CEST) 130 s HP SE 1439047903 12 Aug 2025 15:31:25 UTC (12 Aug 2025 17:31:25 CEST) 15:32:15 glitch 15:33:14 seismic glitch produced large glitch in Hrec (saved picture) HP SE repeat 1439048958 12 Aug 2025 15:49:00 UTC (12 Aug 2025 17:49:00 CEST) we notice a large excitation and audible sound at 200Hz (sharp) and a very small peak rises in Hrec at the same frequency. HP SW (unreachable) because of ipazia cables Cryobaffle position (VAT flange) 1439049539 12 Aug 2025 15:58:41 UTC (12 Aug 2025 17:58:41 CEST) 120 s tiny peaks in hrec around 100Hz and 195Hz (saved figure) bellow HR side 1439050093 12 Aug 2025 16:07:55 UTC (12 Aug 2025 18:07:55 CEST): low frequency < 30Hz rises, plus structures around 100Hz 120s flange HR side 1439050391 12 Aug 2025 16:12:53 UTC (12 Aug 2025 18:12:53 CEST), structures around 100Hz, a bit louder than before (CHECK possible coherences with HRSIDE_ACC) 120 s round part of flange (close to HRSIDE_ACC) 1439050597 12 Aug 2025 16:16:19 UTC (12 Aug 2025 18:16:19 CEST): small excitation around 100Hz again, but much smaller 120s bellow (repeated) 1439051123 12 Aug 2025 16:25:05 UTC (12 Aug 2025 18:25:05 CEST) 120s now in Hrec there is a stable peak at 309Hz which appar. was not there when we started the shift...!? IT WAS at 180 Hz ?? AR side - flange cylinder 1439052525 12 Aug 2025 16:48:27 UTC (12 Aug 2025 18:48:27 CEST) some structured around 70-90Hz and narrow peak at 197Hz 120 s AR side - 1200 flange 1439052865 12 Aug 2025 16:54:07 UTC (12 Aug 2025 18:54:07 CEST): two peaks at 89 Hz and 168 Hz appear (also smaller at 41.5 Hz, corresponding peaks in CT_ACC and, 169 Hz is also very loud in WE_ACC, looks like a resonance of the flange 16:54:40 25min glitch 120 s AR side, viewport 1439053359 12 Aug 2025 17:02:21 UTC (12 Aug 2025 19:02:21 CEST): peaks again: 89Hz, and around 100Hz and broad around 180Hz, narrow 41.5 Hz 120 s