NOTES
- Fix common mode subtraction
- Look at GEN2 Run 7 that Eamon processed. Fiducials are not moving together
Cobra Stage Center Metrology Procedure
Taking the Data:
- Unplug USB cables from computer. Plug in everything on the optical table. (Pump, Camera, Power Supplies, Light Source, etc.).
- Turn on all the power supplies and make sure the boards light up.
- Plug in USB cables to computer.
- Open MSim and run Setup_camera.lst. When the script pauses, do not advance it.
- Wait for camera to warm up (20-30 minutes). You can use the thermocouple reader to watch the temperature and wait for it to stabilize.
- Put lens cap on.
- Setup_camera.lst should still be paused. Advance it.
- Take lens cap off.
- Open metrology_S2_center4.lst outside of MSim. If necessary, edit it. Update the uncommented version.
- Run metrology_S2_center4_uncommented.lst.
- When it finishes, close MSim.
Processing the Data:
- Open PFS_tests folder (shortcut on the desktop). There should be some new folders near the top (the folders are named with a datestamp).
- Check the folders to make sure they have the right number of images. Rename them “datestamp_dark_image” or “datestamp_S1_centers”, as appropriate. If there was a problem and the folders contain junk data that you do not need, delete them.
- Open matlab script S1_load.
- Type “matlabpool” into command window to open up parallel processing.
- Change the file path in the script S1_load to match the filepath of one of the image folders.
- Run S1_load.
- Run S1_plot.
- You should see three plots; One should show all the centroids in real space. One should show the radial residuals. One should show the fiducial spread. Ideally, the centroids in real space should trace out a circle. The radial residuals should be +-0.5 from 0, and the fiducial spread should be +-0.05. If anything looks drastically off, something is probably wrong.
- Save the structure “data” as a .mat file. (Name it something like cobra_centers_XX.mat.)
- Type “clear all; clc; clf;” into the command window.
- Repeat 5-10 for all the folders of images that you want to process.
- Email all the .mat files to Peter.
Test Matrix
Test |
Gen2 |
Gen3 |
Target Tests |
300 targets |
300 targets |
Off-time Tuning |
100 iterations each of 1ms, 2ms, 4ms @ 500 steps off hardstop |
100 iterations each of 1ms, 2ms, 4ms @ 500 steps off hardstop |
Move Repeatability – Stage 1 |
100 moves of: 1, 10, 100, 1000, 5000mrad |
100 moves of: 1, 10, 100, 1000, 5000mrad |
Move Repeatability – Stage 2 |
100 moves of: 1, 10, 100, 1000, 2000mrad |
100 moves of: 1, 10, 100, 1000, 2000mrad |
Center Repeatability – Stage 1 |
10 centers – ~180 points per circle |
10 centers – ~180 points per circle |
Center Repeatability – Stage 2 |
10 centers – ~90 points per half circle |
10 centers – ~90 points per circle |
Motor Map – Stage 1 |
10 maps – ~15deg regions |
10 maps – ~15deg regions |
Motor Map – Stage 2 |
10 maps – ~15deg regions |
10 maps – ~15deg regions |
Results
Motor |
Array ID8 |
Stage |
On-time |
Off-time |
N-Steps |
Test Description |
Data Location |
Status |
GEN2 |
2.1 |
1 |
.18ms |
2ms |
20 |
S1 Centers |
desktop/metrology/S1_center_results |
Complete (10 sets) |
GEN3 |
2.5 |
1 |
.13ms |
2ms |
15 |
S1 Centers |
desktop/metrology/S1_center_results |
Complete (10 sets) |
GEN2 |
2.1 |
2 |
.18ms |
2ms |
25 |
S2 Centers |
desktop/metrology/link_length_results |
Complete (10 sets) |
GEN3 |
2.5 |
2 |
.13ms |
2ms |
15 |
S2 Centers |
desktop/metrology/link_length_results |
Complete (10 sets) |
GEN2 |
2.1 |
1 |
.18ms |
1,2,4ms |
500 |
S1 Off-Time Tuning |
desktop/metrology/S1_Off_time_results |
Complete (2 sets each of 1,2,4 ms off) |
GEN3 |
2.5 |
1 |
.13ms |
1,2,4ms |
500 |
S1 Off-Time Tuning |
desktop/metrology/S1_Off_time_results |
Complete (2 sets each of 1,2,4 ms off) |
GEN2 |
2.1 |
2 |
.18ms |
1,2,4ms |
500 |
S2 Off-Time Tuning |
desktop/metrology/S2_Off_time_results |
Complete (1 sets each of 1,2,4 ms off) |
GEN3 |
2.5 |
2 |
.13ms |
1,2,4ms |
500 |
S2 Off-Time Tuning |
desktop/metrology/S2_Off_time_results |
Complete (1 sets each of 1,2,4 ms off) |
GEN2 |
2.1 |
1 |
.18ms |
2ms |
1,3,28,279,1397 |
Move Repeatability |
desktop/metrology/Motor_error_assesment_results |
Complete (2 sets) |
GEN3 |
2.5 |
1 |
.13ms |
2ms |
1,12,124,620 |
Move Repeatability |
desktop/metrology/Motor_error_assesment_results |
Complete (2 sets) |
This topic: Subaru/PFS
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Topic revision: r9 - 2013-10-28 - EamonPartos