Memo of Hardware Injection (Sine-gaussian waveforms)

* Since Apr. 23, 2020. 03:07:18 AM, JST

* Notation: Start timing, EXC-channel, Comment

After sending 6 seconds of zeroes to signal injection stream, we sent the 4 sec template signal, 12 sec of zeros, 4 sec template, 12 sec of zeros, ... The peaks were located in the center of each templates. It means that the peaks of injected signal were located on GPS0=8+16*n (n=0,1,2,...). We injected from low to high freq as below.

Sine freq [Hz]

Offset for the start timing of template [sec]

Amplitude

(Peaks are located after 2 sec of these timing)

X-PCAL

DARM2

ETMX,ETMY

4.11

6

3.5

6

15

5.13

22

3.5

6

15

7.07

38

3.5

6

15

8.03

54

3.5

6

15

16.23

70

3.5

15

25

17.03

86

3.5

15

25

23.07

102

3.5

6

10

27.11

118

3.5

6

6

29.50

134

3.5

3

6

30.70

150

3.5

3

6

36.0397

166

3.5

4

6

49.6310

182

3.5

4

6

52.8212

198

3.5

4

6

64.1717

214

3.5

4

6

88.6404

230

3.5

4

6

120.879

246

3.5

5

5

139.222

262

3.5

5

5

164.842

278

3.5

5

5

224.795

294

3.5

7

7

268.234

310

3.5

7

7

306.553

326

3.5

7

7

356.222

342

3.5

7

7

418.045

358

3.5

7

7

456.345

374

3.5

7

7

570.088

390

3.5

7

7

682.134

406

3.5

15

15

777.428

422

3.5

80

80

892.234

438

3.5

80

80

1060.18

454

3.5

80

160

1239.23

470

3.5

80

80

1445.76

486

3.5

80

80

1641.45

502

3.5

80

80

1991.58

518

3.5

340

340

2688.64

534

3.5

440

440

3666.50

550

3.5

440

440

4998.17

566

3.5

640

640

with tau=0.4 sec Gaussian (fixed for all templates, and its peak is located on the center of the template), template length 4 sec with 16kHz, and the Tukey window r=0.1 in order to start- and end-edges of the template are fallen down to be exactly zero. In addition, we applied the f^2 effect and normalized to be 1 at the maximum amplitude of the template waveform.

KAGRA/Subgroups/CAL/HW-Inj (last edited 2020-04-25 00:24:14 by takahiro.sawada)