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PEM (Center)
takaaki.yokozawa - 6:58 Sunday 14 May 2023 (25226) Print this report
Acoustic injection IMC area
I performed the acoustic injection this morning.

Injection 1 :
50 count injection
06:09:18 - 06:43:00 (JST)
50 - 900 Hz with 5 Hz resolution
10 second acoustic injection in one frequency

Injection 2 :
50 count injection
06:45:00 - 06:49:30 (JST)
100 - 120 Hz with 1 Hz resolution
10 second acoustic injection in one frequency

Injection 3 :
200 count injection
06:50:30 - 06:55:00 (JST)
100 - 120 Hz with 1 Hz resolution
10 second acoustic injection in one frequency
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takaaki.yokozawa - 7:03 Sunday 14 May 2023 (25227) Print this report
In 1st injection, the excess in DARM is quite smaller compared from REFL area(Fig.1.).
In several frequency, the excess detected such as in (Fig.2. - Fig.6.)

In 2nd injection, the harmonics like signal detected in 117 Hz injection (Same reason in REFL(?)) (Fig.7.)
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tatsuki.washimi - 13:16 Monday 15 May 2023 (25243) Print this report

I analyzed the "Injection 1" data

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tatsuki.washimi - 16:07 Thursday 18 May 2023 (25285) Print this report

I performed the re-analysis for the "Injection 1", 50-900Hz swept sine acoustic injection around the MCF.

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tatsuki.washimi - 16:23 Thursday 18 May 2023 (25288) Print this report

I also analyzed the "Injection 2" data:

Injection 2 :
50 count injection
06:45:00 - 06:49:30 (JST)
100 - 120 Hz with 1 Hz resolution
10 second acoustic injection in one frequency

Th1 117Hz peak was almost same with the projection.

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tatsuki.washimi - 19:09 Thursday 18 May 2023 (25292) Print this report

Comparison between 50-counts and 200-count DAC output for the 100-120 Hz swept sine acoustic injection test at MCF area.

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