|
Size: 705
Comment:
|
Size: 1149
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 1: | Line 1: |
| Purpose: To prepare a noise model of the MC and prepare an error budget for MC length fluctuations | '''Purpose''': To prepare a noise model of the MC and prepare an error budget for MC length fluctuations ------------------- '''Step 1.''' List of previous related work and examples of noise models [[https://nodus.ligo.caltech.edu:30889/svn/trunk/rana/mat/mc/ | Rana's LLO MC model]] |
| Line 3: | Line 8: |
| Step 1. Collect the existing tools and models prepared. List of previous related work Rana, David Feldbaum, Koji Step 2. Prepare a toy model |
[[target|David Feldbaum]] |
| Line 8: | Line 10: |
| Step 3. Make a model for the MC -> PSL feed-back loop with various sources of noise | [[https://nodus.ligo.caltech.edu:30889/svn/trunk/docs/upgrade08/Green_Locking/Servo_modeling/091121/|Koji's ALS servo model]] |
| Line 10: | Line 12: |
| Noise source 1. Noise source 2. .... |
'''Step 2.''' Prepare a toy model of a generic feedback loop with two noise sources as a pedagogic exercise (Wed 15th Feb) |
| Line 14: | Line 14: |
| Step 4. Measure the MC loop noise | '''Step 3.''' Make a model for the MC -> PSL feedback loop with various sources of noise (Wed 22nd Feb) |
| Line 16: | Line 16: |
| Step 5. Obtain the error budget plot. | '''Step 4.''' Measure the MC loop noise (Wed 29th Feb) |
| Line 18: | Line 18: |
| Step 6. Include ASC noise from the WFS loops in the model | '''Step 5.''' Obtain the error budget plot. (Wed 8th March) |
| Line 20: | Line 20: |
| Step 7 Measure ASC noise in the instrument | '''Step 6.''' Include ASC noise from the WFS loops in the model (Wed 15th March) |
| Line 22: | Line 22: |
| Step 8 Improve the ASC servo filter shape to reduce the ASC noise injected into the MC loop. | '''Step 7.''' Measure ASC noise in the instrument (Wed 22nd March) |
| Line 24: | Line 24: |
| '''Step 8.''' Improve the ASC servo filter shape to reduce the ASC noise injected into the MC loop. (Wed 29th March) |
Purpose:
- To prepare a noise model of the MC and prepare an error budget for MC length fluctuations
Step 1. List of previous related work and examples of noise models
Step 2. Prepare a toy model of a generic feedback loop with two noise sources as a pedagogic exercise (Wed 15th Feb)
Step 3. Make a model for the MC -> PSL feedback loop with various sources of noise (Wed 22nd Feb)
Step 4. Measure the MC loop noise (Wed 29th Feb)
Step 5. Obtain the error budget plot. (Wed 8th March)
Step 6. Include ASC noise from the WFS loops in the model (Wed 15th March)
Step 7. Measure ASC noise in the instrument (Wed 22nd March)
Step 8. Improve the ASC servo filter shape to reduce the ASC noise injected into the MC loop. (Wed 29th March)