Sheila, Camilla
17:23 - 1745 Turned off SQZ IFO ASC and ran SCAN _SQZ_ALIGNMENT (changed ZMs by ~20urad max plot but BLRMs worse) and then SCAN_SQZANG (changed by 4deg, BLRMS improved but still worse than original). DTT comparing: shows that the AS42 SQZ IFO ASC did better than guardian SCAN_SQZ alignment and angle.
17:50:30 - 18:30:30 UTC - Took No Squeezing time. IFO had been in NLN for 2h10m. Checked NLG = 13.8 (0.12133/0.008785), following 76542. OPO temperature was already at best.
Went back to FDS with ASC and ran SCAN_SQZANG. After the first FDS data set, we turned off ASC.
FDS Data set:
| State | Time (UTC) | Start time (gps) | Angle | DTT Ref |
Notes |
| FDS ASC on | 17:16 | 1 | |||
| FDS SCAN_ALIGN | 17:49 | 2 | (ASC off). SQZ worse than with AS42: plot | ||
| No SQZ | 17:50:30 - 18:00:30 (10min) | 1412963448 | N/A | 0 | |
| FDS | 18:06:00 - 18:12:00 (6min) | 1412964378 | 182.4 | 3 | |
| Glitch 2 minutes in, looked simular to FDS | |||||
| Mid SQZ + | 18:26:00 - 18:32:00 (6min) | 1412965578 | 216.6 | 4 | Aimed for No SQZ level at 2kHz |
| A SQZ | 18:36:00 - 18:42:00 (6min) | 1412966178 | (-)105.6 | 5 | |
| A SQZ +10deg | 18:42:15 - 18:48:15 (6min) | 1412966553 | (-)115.1 | 6 | |
| A SQZ -10deg | 18:48:30 - 18:54:30 (6min) | 1412966928 | (-)95.2 | 7 | |
| Mid SQZ - | 18:56:00 - 19:02:00 (6min) | 1412967378 | 136.9 | 8 | Aimed for No SQZ level at 2kHz |
| FDS +10deg | 19:03:30 - 19:09:30 (6min) | 1412967828 | 192.8 | 9 | |
| FDS -10deg | 19:10:00 - 19:16:00 (6min) | 1412968218 | 172.0 | 10 | |
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FDS (repeat, ASC off)
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19:16:30 - 19:22:30 (6min)
|
|
182.4
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11
|
Slightly worse than ref3
1h10 later with ASC off
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Plot attached showing ASQZ and Mid sqz trends and FDS trends. Saved as camilla.compton/Documents/sqz/templates/dtt/14Oct2024_SQZ_FDS_ASQZ/SQZ.xml.
Then did scan SQZ ang (adjusted 182.4 to 183.9) and turned on ASC in FDS. Then turned off ASC and went to FIS (un-managed form ISC_LOCK). Tweaked SQZ angle as it wasn't optimized at high freq.
FDS Data set:
| State | Time (UTC) | Start time (gps) | Angle | DTT Ref |
Notes |
| FIS | 19:40:30 - 18:46:30 (6min) | 1412970048 | 193.4 | 3 | |
| Mid SQZ + | 19:47:30 - 18:53:30 (6min) | 1412970468 | 218.0 | 4 |
Aimed for No SQZ level at 2kHz
(SEI state changed to useism at 19:52 UTC)
|
| A SQZ | 19:56:00 - 20:02:00 (6min) | 1412970978 | (-)103.3 | 5 | |
| A SQZ +10deg | 20:02:30 - 20:08:30 (6min) | 1412971368 | (-)113.8 | 6 | |
| A SQZ -10deg | 20:09:00 - 20:15:00 (6min) | 1412971758 | (-)93.8 | 7 | |
| Mid SQZ - | 20:16:30- 20:22:30 (6min) | 1412972208 | 147.0 | 8 | Aimed for No SQZ level at 2kHz |
| FIS +10deg | 20:24:30- 20:30:30 (6min) | 1412972688 | 203.8 | 9 | |
| N/A | Got distracted and changed angle too soon | ||||
| FIS -10deg | 20:35:45- 20:41:45 (6min) | 1412973363 | 183.9 | 10 | |
| FIS (repeat) | 20:42:00- 20:48:00 (6min) | 1412973738 | 193.4 | 11 | V. simular to ref 3. Maybe slightly better |
Plot attached showing FIS ASQZ and Mid sqz trends and FDS trends. Saved as camilla.compton/Documents/sqz/templates/dtt/14Oct2024_SQZ_FIS_ASQZ/SQZ.xml.
No SQZ 20:49:00UTC to 20:51:00UTC while we went back to FDS, I started it at 185deg and ran SCAN_SQZANG, angle adjusted to 189deg. Back to Observing at 20:57UTC.
