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PEM (Center)
takaaki.yokozawa - 8:16 Monday 26 June 2023 (25709) Print this report
Acoustic injection test at OMC area
I performed the acoustic injection test at OMC area.

1. Silent run
2023/05/26 05:45:00 - 06:05:00 (JST)

2. wide frequency injection, 2000 cnt
2023/05/26 06:10:00 - 06:30:00 (JST)
During this run, I turned off the BPC ITMX and ITMY

3. wide frequency injection, 1500 cnt
2023/05/26 06:30:00 - 06:49:00 (JST)
During this run, I turned off the BPC ITMX and ITMY

4. Silent run
2023/05/26 06:50:00 - 07:09:00 (JST)

5. wide frequency injection, 1000 cnt
2023/05/26 07:10:00 - 07:29:00 (JST)
During this run, I turned off the BPC ITMX and ITMY

6. 89.6 Hz injection with 50 cnt
2023/05/26 07:30:00 - 07:49:00 (JST)

7. 90.8 Hz injection with 50 cnt
2023/05/26 07:50:00 - 08:09:00 (JST)

6. 89.6 Hz injection with 50 cnt
2023/05/26 08:10:00 - 08:30:00 (JST)

After this measurement, I requested to OBSERVATION state.

Fig.1. shows the preliminary result for measurement 2,3 and 5
Fig.2. shows the preliminary result for measurement 6,7 and 8
Images attached to this report
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