40m
QIL
Cryo_Lab
CTN
SUS_Lab
TCS_Lab
OMC_Lab
CRIME_Lab
FEA
ENG_Labs
OptContFac
Mariner
WBEEShop
|
40m Log |
Not logged in |
 |
|
Mon Mar 19 23:44:00 2018, gautam, Update, IOO, IMC loop checkup 
|
Tue Mar 20 16:53:03 2018, gautam, Update, IOO, IMC loop checkup
|
Tue Mar 20 21:08:03 2018, gautam, Update, IOO, IMC loop checkup
|
Tue Mar 20 22:44:45 2018, gautam, Update, IOO, IMC loop checkup
|
Wed Mar 21 15:52:45 2018, gautam, Update, IOO, MC error point calibration  
|
Wed Mar 21 17:31:21 2018, gautam, Update, IOO, MC error point calibration
|
Wed Mar 21 21:13:44 2018, gautam, Update, IOO, IMC noise budget
|
Tue Mar 27 01:39:44 2018, gautam, Update, IOO, PSL noise eater was off
|
Tue Mar 27 19:32:03 2018, arijit, Update, IOO, PSL noise eater was off 
|
Tue Mar 27 23:37:35 2018, gautam, Update, IOO, MC REFL PD removed
|
Wed Mar 28 21:31:39 2018, gautam, Update, IOO, MC REFL PD removed
|
Wed Mar 28 21:47:37 2018, arijit, Update, IOO, MCREFL_PD Optical response measurement 
|
Thu Mar 29 17:57:36 2018, arijit, Update, IOO, MCREFL_PD Optical response measurement
|
Fri Mar 30 06:14:31 2018, rana, Update, IOO, MCREFL_PD Optical response measurement
|
Fri Mar 30 22:37:36 2018, Kevin, Update, IOO, MCREFL_PD Optical response measurement
|
Thu Apr 5 04:36:56 2018, Kevin, Update, IOO, Coil driver noise  
|
Thu Apr 5 12:13:18 2018, Koji, Update, IOO, Coil driver noise
|
Fri Apr 6 21:39:09 2018, gautam, Update, IOO, MC2 suspension health checkup
|
Mon Apr 9 18:46:03 2018, gautam, Update, IOO, Further debugging 
|
Tue Apr 10 14:28:44 2018, gautam, Update, IOO, Further debugging
|
Wed Apr 11 01:34:31 2018, gautam, Update, IOO, Activities today
|
Thu Apr 12 18:12:49 2018, gautam, Update, ALS, NPRO channels hijacked  
|
Fri Apr 13 11:02:41 2018, gautam, Update, ALS, EX fiber polarization drift
|
Fri Apr 13 17:56:26 2018, gautam, Update, ALS, Fibers switched out
|
Sat Apr 14 14:42:09 2018, gautam, Update, ALS, Fibers switched out
|
Tue Apr 17 14:08:29 2018, gautam, Update, ALS, Fibers switched out
|
Fri Apr 20 00:26:34 2018, gautam, Update, ALS, Fibers switched out
|
Sat Apr 21 20:25:12 2018, gautam, Update, ALS, PSL fiber pickoff status
|
Thu Apr 19 00:03:51 2018, gautam, Update, IOO, More IMC NBing 
|
Thu Apr 19 17:15:35 2018, gautam, Update, IOO, More IMC NBing 
|
Sun May 20 23:43:50 2018, gautam, Update, IOO, Coil driver noise re-measurement    
|
Tue May 22 17:26:25 2018, gautam, Update, IOO, MC1 Coil Driver pulled out
|
Tue May 22 23:28:01 2018, gautam, Update, IOO, MC1 Coil Driver pulled out
|
Wed May 23 17:58:48 2018, gautam, Update, IOO, MC1 Coil Driver pulled out 
|
Wed May 30 10:17:46 2018, gautam, Update, IOO, MC1 Coil Driver pulled out 
|
Fri Apr 6 22:23:53 2018, Kevin, Update, IOO, Coil driver noise
|
|
Message ID: 13698
Entry time: Wed Mar 21 21:13:44 2018
In reply to: 13697
Reply to this: 13708
13728
|
Author: |
gautam |
Type: |
Update |
Category: |
IOO |
Subject: |
IMC noise budget |
|
|
I've added two curves to the NB. Both are measured (with FET preamp) at the output of the demod board, with the LO driven at the nominal level by the Wenzel RF source pickoff (as it would be when the IMC is locked) and the RF input connected to the IMC REFL PD. For one curve, I simply closed the PSL shutter, while for the other, I left the PSL shutter open, but macroscopically misaligned MC2 so that there was no IMC cavity. So barring RFAM, there should be no PDH signal on the REFL PD, but I wanted to have light on there. I'm not sure if I understand the difference between these two curves though, need to think on it. Perhaps the IMC REFL PD's optical/electrical response needs to be characterized?
Quote: |
Next curve to go on here is the demod board noise with the PSL shutter closed but the IMC REFL PD connected to the RF input (or maybe even better, have light on the PD, but macroscopically misalign MC2 so there is no 29.5MHz PDH signal), just to make sure there isn't anything funky going on there...
|
|
|
|