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Reports until 12:16, Saturday 15 February 2025
H1 CAL (Lockloss)
ryan.short@LIGO.ORG - posted 12:16, Saturday 15 February 2025 (82827)
Lockloss after Broadband and Simulines Calibration Sweeps

Following the wiki instructions, I ran broadband and Simulines calibration sweeps this morning. This was with the updated Simulines sweep from Vlad with the last frequency point cut out, however H1 again lost lock towards the end of the Simulines injections (link to lockloss tool). See previous investigations into these locklosses in alog82704.

The following injections were the ones still running at the time of the lockloss at 20:01:53 UTC:

2025-02-15 20:01:30,766 | INFO | Scanning frequency 7.68 in Scan : PCALY2DARMTF on PID: 1977568
2025-02-15 20:01:30,766 | INFO | Drive, on PCALY2DARMTF, at frequency: 7.680030000117188, is now running for 35 seconds.
2025-02-15 20:01:35,038 | INFO | Drive, on L1_SUSETMX_iEXC2DARMTF, at frequency: 13, and amplitude 20.726, is finished. GPS start and end time stamps: 1423684888, 1423684908
2025-02-15 20:01:35,038 | INFO | Scanning frequency 14.5 in Scan : L1_SUSETMX_iEXC2DARMTF on PID: 1977571
2025-02-15 20:01:35,038 | INFO | Drive, on L1_SUSETMX_iEXC2DARMTF, at frequency: 14.5, is now running for 28 seconds.
2025-02-15 20:01:36,152 | INFO | Drive, on DARM_OLGTF, at frequency: 875.25, and amplitude 3.7558e-10, is finished. GPS start and end time stamps: 1423684888, 1423684908
2025-02-15 20:01:36,152 | INFO | Scanning frequency 1083.7 in Scan : DARM_OLGTF on PID: 1977565
2025-02-15 20:01:36,153 | INFO | Drive, on DARM_OLGTF, at frequency: 1083.7, is now running for 28 seconds.
2025-02-15 20:01:42,692 | INFO | Drive, on L3_SUSETMX_iEXC2DARMTF, at frequency: 131.75, and amplitude 0.36336, is finished. GPS start and end time stamps: 1423684896, 1423684916
2025-02-15 20:01:42,692 | INFO | Scanning frequency 155.75 in Scan : L3_SUSETMX_iEXC2DARMTF on PID: 1977577
2025-02-15 20:01:42,692 | INFO | Drive, on L3_SUSETMX_iEXC2DARMTF, at frequency: 155.75, is now running for 28 seconds.
2025-02-15 20:01:43,808 | INFO | Drive, on L2_SUSETMX_iEXC2DARMTF, at frequency: 37.25, and amplitude 0.47133, is finished. GPS start and end time stamps: 1423684896, 1423684916
2025-02-15 20:01:43,808 | INFO | Scanning frequency 43.75 in Scan : L2_SUSETMX_iEXC2DARMTF on PID: 1977574
2025-02-15 20:01:43,808 | INFO | Drive, on L2_SUSETMX_iEXC2DARMTF, at frequency: 43.75, is now running for 28 seconds.
2025-02-15 20:01:54,427 | ERROR | IFO not in Low Noise state, Sending Interrupts to excitations and main thread.

Broadband sweep ran from 19:30:50 to 19:36:06 UTC, Simulines sweep ran from 19:36:53 to 20:01:53 UTC (ended at lockloss). The 7.68Hz DARM injection is clearly seen on the lockloss trends.

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