Reports until 21:43, Saturday 22 November 2025
H1 SQZ
sheila.dwyer@LIGO.ORG - posted 21:43, Saturday 22 November 2025 (88208)
more overnight scripts running

After Robert stoped for the day, I set up another round of sqz scanning scripts, which should finish in less than 2 hours from now.  

I've also modified Kevin's script to allow me to schedule it to start at midnight, and added some lines that will attempt to step down the ITM CO2 powers to 0.9W from 1.7W.  This is a repeat of a test we tried a few times in June, we had locklosses that might have been unrelated 85335.  If the IFO stays locked for 1 hour after stepping down the CO2s, the script should run the ADF scan again.  I didn't test any of my modifications to the script.

Here's the log of times for the first sqz angle scan tonight: 

log of times : 
nonlinear gain measurement, unamplified seed scan: 1447904771, amplified seed time: 1447904933 nosqz : 1447904755.0

starting angle scan for FIS with zm4 psams at 6.2, zm5 psams at -5.3:

169.8 : 1447906635.0 
159.8 : 1447906876.0 
149.8 : 1447907115.0 
139.8 : 1447907356.0 
129.8 : 1447907596.0 
119.8 : 1447907836.0 
109.8 : 1447908076.0 
99.8 : 1447908316.0 
89.8 : 1447908556.0 
79.8 : 1447908796.0 
79.8 : 1447909036.0 
59.8 : 1447909276.0 
39.8 : 1447909516.0 
19.8 : 1447909757.0 
0.0 : 1447909997.0 
-30.0 : 1447910237.0 
-60.0 : 1447910477.0 
-90.0 : 1447910717.0 
-120.0 : 1447910957.0 
-150.0 : 1447911197.0 

Edited to add: the scan for FIS with nominal psams also completed: 

starting angle scan for FIS with zm4 psams at 6.2, zm5 psams at -0.4

188.2 : 1447912973.0 
178.2 : 1447913213.0 
168.2 : 1447913453.0 
158.2 : 1447913694.0 
148.2 : 1447913933.0 
138.2 : 1447914174.0 
128.2 : 1447914413.0 
118.2 : 1447914654.0 
108.2 : 1447914894.0 
98.2 : 1447915134.0 
78.2 : 1447915374.0 
58.2 : 1447915614.0 
38.2 : 1447915854.0 
18.2 : 1447916094.0 
0.0 : 1447916334.0 
-30.0 : 1447916575.0 
-60.0 : 1447916814.0 
-90.0 : 1447917054.0 
-120.0 : 1447917295.0 
-150.0 : 1447917534.0