Reports until 19:21, Thursday 06 June 2024
H1 ISC (ISC)
ibrahim.abouelfettouh@LIGO.ORG - posted 19:21, Thursday 06 June 2024 (78292)
IFO Out Suspensions (OMC, OM2, OM3) OSEM Master Out Count Delta During Powerup

Jenne, Ibrahim

Trended the net movements of some OM suspensions during powerup from our most recent lock acquisition (2024-06-06 10:21UTC to 2024-06-06 15:56 UTC). This was done during today's comissioning to know whether our new OFI alignment configuration would saturate our IFO Out suspensions during powerup. Therefore, this data is just one reference of how much these suspensions usually move during powerup. For details on the actual OFI move today, refer to alog 78290. I've attached an identical (and prettier) sheets screenshot of the table below.

Suspension

Net Powerup Delta

Net Towards 0?

Local Extrema Delta

Local Extrema Towards 0?

Remarks

OMC (131k)

 

 

 

 

OMC Results are to the nearest thousand

T1

 0 N/A 0 N/A  

T2

 29000 Yes 13000 No  

T3

 24000 Yes 14000 No  

LF

 9000 Yes 7000 No Net is largely unchanged

RT

 13000 Yes 7000 No  

SD

 0 N/A 0 N/A  

OM2 (32k)

 

 

 

 

OM2 Results are to nearest 100

UL

 100 No 900 No  

LL

 1100 No 1900 No  

UR

 1200 No 1900 No  

LR

 600 No 800 No  

OM3 (32k)

 

 

 

 

OM3 Results are to nearest 100

UL

 1200 Yes 1100 No Amplitude of fluctuation dips below and above baseline (so while extrema trends away from 0 there are about 200 cts towards 0 with each swing

LL

 1100 No 700 Yes Amplitude of fluctuation dips below and above the baseline (so while extrema trends towards 0, there are about 200 cts away from 0 with each swing)

UR

 700 No 600 Yes Amplitude of fluctuation dips below and above the baseline (so while extrema trends towards 0, there are about 200 cts away from 0 with each swing)

LR

 1300 Yes 1000 No Amplitude of fluctuation dips below and above baseline (so while extrema trends away from 0 there are about 200 cts towards 0 with each swing
Images attached to this report