|
40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
|
| 40m Log |
Not logged in |
 |
|
|
 Thu Apr 29 11:51:27 2021, Anchal, Summary, LSC, Start of measuring IMC WFS noise contribution in ar cavity length noise
|
 Thu Apr 29 15:11:33 2021, gautam, Update, CDS, RFM 
| |
Thu Apr 29 17:43:16 2021, Koji, Update, CDS, RFM
| |
Thu Apr 29 17:43:48 2021, Anchal, Update, CDS, F2A Filters double check
| |
Fri Apr 30 00:20:30 2021, gautam, Update, CDS, F2A Filters double check
| |
Thu Apr 29 17:51:19 2021, Anchal, Summary, LSC, Start of measuring IMC WFS noise contribution in arm cavity length noise
| |
Fri Apr 30 00:18:40 2021, gautam, Summary, LSC, Start of measuring IMC WFS noise contribution in arm cavity length noise
| |
Mon May 3 09:14:01 2021, Anchal, Paco, Update, LSC, IMC WFS noise contribution in arm cavity length noise
| |
Mon May 3 17:28:58 2021, Anchal, Paco, Rana, Update, LSC, IMC WFS noise contribution in arm cavity length noise
| |
Tue May 4 11:43:09 2021, Anchal, Paco, Update, LSC, IMC WFS noise contribution in arm cavity length noise
| |
Fri May 7 11:54:02 2021, Anchal, Paco, Update, LSC, IMC WFS noise contribution in arm cavity length noise
| |
Mon May 10 18:19:12 2021, Anchal, Paco, Update, LSC, IMC WFS noise contribution in arm cavity length noise, Corrections
| |
Wed May 12 10:53:20 2021, Anchal, Paco, Update, LSC, PSL-IMC PDH Loop and XARM PDH Loop diagram
|
|
|
Message ID: 16112
Entry time: Mon May 3 17:28:58 2021
In reply to: 16108
Reply to this: 16117
|
| Author: |
Anchal, Paco, Rana |
| Type: |
Update |
| Category: |
LSC |
| Subject: |
IMC WFS noise contribution in arm cavity length noise |
|
|
Rana came and helped us figure us where to inject the noise. Following are the characteristics of the test we did:
- Inject normal noise at C1:IOO-MC1_PIT_EXC using AWGGUI.
- Excitation amplitude of 54321 in band 12-37Hz with Cheby1 8th order bandpass filter with same limits.
- Look at power spectrum of C1:IOO-MC_F_DQ, C1:IOO-WFS1-PIT_OUT_DQ and the C1:IOO-MC1_PIT_EXC itself.
- Increased the gain of the noise excitation until we see some effect in MC_F.
- Diaggui also showed coherence plot in the bottom, which let's us have an estimate of how much we need to go further.
Attachment 1 shows a screenshot with awggui and diaggui screens displaying the signal in both angular and longitudinal channels.
Attachment 2 shows the analogous screenshot for MC2.
|
|
|
|
|