ryan.crouch@LIGO.ORG - posted 18:04, Monday 04 November 2024 - last comment - 09:34, Tuesday 05 November 2024(81056)
Holding IMC lock with and without the ISS
- 21:37 -> 23:37 UTC - Leaving IMC locked and ISS first loop unlocked for testing (~2 hours, gps_start = 1414791485, gps_stop = 1414798720)
- IMC & FSS stayed locked the whole time
- 23:38 -> 01:38 UTC- Adding in ISS first loop (~2 hours gps_start = 1414798725, gps_stop = 1414805900)
- IMC & FSS lost lock a few times, the ISS lost lock many times, in a few different combinations
- ISS and IMC lose lock, but FSS stays locked
- The first lockloss looked like the ISS_AOM and FSS_TPD were the first to see it (at the same time)
- The FSS stays locked through a lot of these ISS oscillations that knock out the IMC and ISS, another example
- The ISS would lose it while the IMC is relocking with the FSS staying locked, example
- All 3 would lose lock, ISS first then IMC then FSS, example
- Only the ISS would lose lock, example
- All 3, IMC, then ISS then FSS example
- ISS and IMC lose lock, but FSS stays locked
- IMC & FSS lost lock a few times, the ISS lost lock many times, in a few different combinations
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See zoomed out trends from the 2 hour ISS_ON vs. 2 hour ISS_OFF test attached.
edit: fixed labels that were previously backwards (thanks Camilla). With ISS off, we had not seen glitches in yesterday's 2-hour test.
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